1–39
Information Storage Devices, Inc.
1
®
FEATURES
• Easy-to-use single-chip voice Record/
Playback solution
• High-quality, natural voice/audio
reproduction
• Push-button interface
– Playback can be edge- or level-
activated
• Single-chip durations of 10 and 12
seconds
• Automatic power-down mode
– Enters standby mode immediately
following a Record or Playback
cycle
– Standby current 0.5
µ
A (typical)
• Zero-power message storage
– Eliminates battery backup circuits
• Fully addressable to handle multiple
messages
• 100-year message retention (typical)
• 100,000 record cycles (typical)
• On-chip clock source
• No algorithm development required
• Single +5 volt power supply
• Available in die form, DIP, and SOIC
packaging
GENERAL DESCRIPTION
Information Storage Devices’ ISD1200 Chip-
Corder
®
Series provides high-quality, single-chip
ISD1200 Series
Single-Chip Voice Record/Playback Devices
10- and 12-Second Durations
ISD1200 SERIES SUMMARY
Part
Number Minimum Duration
(Seconds) Input Sample Rate
(KHz) Typical Filter
Pass Band (KHz)
ISD1210 10 6.4 2.6
ISD1212 12 5.3 2.2
08.DataBook_1200 Dsht Page 39 Friday, September 27, 1996 10:59 AM
Product Data Sheets
ISD1200 Series
1–40
-1
Record/Playback solutions to short-duration mes-
saging applications. The CMOS devices include
an on-chip oscillator, microphone preamplifier,
automatic gain control, antialiasing filter, smooth-
ing filter, and speaker amplifier. A minimum
Record/Playback subsystem can be configured
with a microphone, a speaker, several passives,
two push-buttons, and a power source.
Recordings are stored in on-chip nonvolatile
memory cells, providing zero-power message
storage. This unique, single-chip solution is made
possible through ISD's patented multilevel stor-
age technology. Voice and audio signals are
stored directly into memory in their natural form,
providing high-quality, solid-state voice reproduc-
tion.
.
DETAILED DESCRIPTION
Speech/Sound Quality
ISD’s patented ChipCorder technology provides
natural Record and Playback. The ISD1200
Series includes devices offered at 5.3 and 6.4KHz
sampling frequenies allowing the user a choice of
speech quality options. The input voice signals
are stored directly in nonvolatile EEPROM cells,
and reproduced without the synthetic effect often
heard with digital solid-state speech solutions. A
complete sample is stored in a single cell, mini-
mizing the memory necessary to store a recording
of a given duration.
Duration
To meet end system requirements, the ISD1200
Series offers single-chip solutions at 10 and 12
seconds.
EEPROM Storage
One of the benefits of ISD’s ChipCorder technol-
ogy is the use of on-chip nonvolatile memory,
providing zero-power message storage. The mes-
sage is retained for up to 100 years typically
without power. In addition, the device can be re-
recorded typically over 100,000 times.
Basic Operation
The ISD1200 ChipCorder Series devices are con-
trolled by a single Record signal, REC, and either
ISD1200 SERIES BLOCK DIAGRAM
Analog Transceivers
Decoders
64K Cell
Nonvolatile
Multilevel Storage
Array
Amp
Amp
Sampling Clock
Timing
Internal Clock
Pre-
Amp
VCCA VSSA VSSD VCCD
Power Conditioning
A0 A1 A2 A3 A4 A5 A6 A7
Address Buffers
REC PLAYE PLAYL RECLED
Device Control
ANA IN
XCLK
ANA OUT
MIC
MIC REF
AGC
SP+
SP–
5-Pole Active
Antialiasing Filter
5-Pole Active
Smoothing Filter
Automatic
Gain Control
(AGC)
R
08.DataBook_1200 Dsht Page 40 Friday, September 27, 1996 10:59 AM
Product Data Sheets
ISD1200 Series
1–41
1
of two push-button control playback signals,
PLAYE (edge-activated Playback), and PLAYL
(level-activated Playback). The ISD1200 parts are
configured for simplicity of design in a single-mes-
sage application. Using the address lines will
allow multiple message applications. Device
operation is explained on page 1-55.
Automatic Power-Down Mode
At the end of a Playback or Record cycle, the
ISD1200 Series devices automatically return to a
low-power standby mode, consuming typically
0.5
µ
A. During a Playback cycle, the device pow-
ers down automatically at the end of the message.
During a Record cycle, the device powers down
immediately after REC is released HIGH.
Addressing (optional)
In addition to providing simple message play-
back, the ISD1200 Series provides a full
addressing capability.
The ISD1200 Series storage array has 80 distinct
addressable segments, providing the following
resolutions. See the
ISD Application Notes and
Design Manual
in this book for ISD1200 address
tables.
PIN DESCRIPTIONS
NOTE
The REC signal is debounced for 50 ms
on the rising edge to prevent a false retrig-
gering from a push-button switch.
Voltage Inputs (V
CCA
, V
CCD
)
Analog and digital circuits internal to the ISD1200
Series use separate power buses to minimize
noise on the chip. These power buses are brought
out to separate pins on the package and should
be tied together as close to the supply as possi-
ble. It is important that the power supply be
decoupled as close as possible to the package.
Ground Inputs (V
SSA
, V
SSD
)
Similar to V
CCA
and V
CCD
, the analog and digital
circuits internal to the ISD1200 Series use sepa-
rate ground buses to minimize noise. These pins
should be tied together as close as possible to the
device.
Record (REC)
The REC input is an active-LOW Record signal.
The device records whenever REC is LOW. This
signal must remain LOW for the duration of the
Recording. REC takes precedence over either
Playback (PLAYE or PLAYL) signal. If REC is
pulled LOW during a Playback cycle, the Play-
back immediately ceases and Recording begins.
A Record cycle is completed when REC is pulled
HIGH or the memory space is filled.
Part Number Minimum Duration
(Seconds)
ISD1210 125 ms
ISD1212 150 ms
NOTE:
NC means Must Not Connect.
ISD1200 SERIES PINOUTS
SSD
SSA
A0 1
A1 2
A2 3
A3 4
A4 5
A5 6
NC 7
NC 8
A6 9
A7 10
NC 11
V 12
V 13
SP+ 14
28 V
27 REC
26 XCLK
25 RECLED
24 PLAYE
23 PLAYL
22 NC
21 ANA OUT
20 ANA IN
19 AGC
18 MIC REF
17 MIC
16 V
15 SP–
CCD
CCA
ISD1200
DIP/SOIC
08.DataBook_1200 Dsht Page 41 Friday, September 27, 1996 10:59 AM
Product Data Sheets
ISD1200 Series
1–42
-1
An end-of-message marker (EOM) is internally
recorded, enabling a subsequent Playback cycle
to terminate appropriately. The device automati-
cally powers down to standby mode when REC
goes HIGH.
Playback, Edge-Activated (PLAYE)
When a LOW-going transition is detected on this
input signal, a Playback cycle begins. Playback
continues until an end-of-message (EOM) is
encountered or the end of the memory space is
reached. Upon completion of the Playback cycle,
the device automatically powers down into
standby mode. Taking PLAYE HIGH during a
Playback cycle will not terminate the current
cycle.
Playback, Level-Activated (PLAYL)
When this input signal transitions from HIGH to
LOW, a Playback cycle is initiated. Playback con-
tinues until PLAYL is pulled HIGH, an EOM marker
is detected, or the end of the memory space is
reached. The device automatically powers down
to standby mode upon completion of the Playback
cycle.
NOTE
In Playback, if either PLAYE or PLAYL is
held LOW during EOM or OVERFLOW, the
device will still enter standby and the
internal oscillator and timing generator will
stop. However, the rising edge of PLAYE
and PLAYL are not debounced and any
subsequent falling edge (particularly
switch bounce) present on the input pins
will initiate another Playback.
Record LED Output (RECLED)
The output RECLED is LOW during a Record
cycle. It can be used to drive an LED to provide
feedback that a Record cycle is in progress. In
addition, RECLED pulses LOW momentarily when
an end-of-message marker (EOM) is encountered
in a Playback cycle.
Microphone Input (MIC)
The microphone input transfers its signal to the
on-chip preamplifier. An on-chip Automatic Gain
Control (AGC) circuit controls the gain of this
preamplifier from -15 to 24 dB. An external micro-
phone should be AC coupled to this pin via a
series capacitor. The capacitor value, together
with the internal 10 K Ohm resistance on this pin,
determine the low-frequency cutoff for the
ISD1200 Series passband. See the
ISD Applica-
tion Notes and Design Manual
in this book for
additional information on low-frequency cutoff
calculations.
Microphone Reference (MIC REF)
The MIC REF input is the inverting input to the
microphone preamplifier. This provides a noise-
canceling or common-mode rejection input to the
device when connected differentially to a
microphone.
Automatic Gain Control (AGC)
The AGC dynamically adjusts the gain of the
preamplifier to compensate for the wide range of
microphone input levels. The AGC allows the full
range of sound, from whispers to loud sounds, to
be recorded with minimal distortion. The “attack”
time is determined by the time constant of a 5 K
Ω
internal resistance and an external capacitor (C6
on the schematic on page 1-55) connected from
the AGC pin to V
SSA
analog ground. The “release”
time is determined by the time constant of an
external resistor (R5) and an external capacitor
(C6) connected in parallel between the AGC Pin
and V
SSA
analog ground. Nominal values of 470
K
Ω
and 4.7
µ
F give satisfactory results in most
cases.
Analog Output (ANA OUT)
This pin provides the preamplifier output to the
user. The voltage gain of the preamplifier is deter-
mined by the voltage level at the AGC pin.
08.DataBook_1200 Dsht Page 42 Friday, September 27, 1996 10:59 AM
Product Data Sheets
ISD1200 Series
1–43
1
Analog Input (ANA IN)
The ANA IN pin transfers the input signal to the
chip for recording. For microphone inputs, the
ANA OUT pin should be connected via an external
capacitor to the ANA IN pin. This capacitor value,
together with the 3.0 K
Ω
input impedance of ANA
IN, is selected to give additional cutoff at the low-
frequency end of the voice passband. If the
desired input is derived from a source other than
a microphone, the signal can be fed, capacitively
coupled, into the ANA IN pin directly. Nominal
values of 470K
Ω
and u.7
µ
F give satisfactory
results in most cases.
External Clock Input (XCLK)
The external clock input for the ISD1200 devices
has an internal pull-down device. The ISD1200 is
configured at the factory with an internal sampling
clock frequency that guarantees its minimum
nominal Record/Playback time. For instance, an
ISD1210 operating within specification will be
observed to always have a minimum of 10 sec-
onds of recording time. The sampling frequency is
then maintained to a variation of
±
2.25% over the
commercial temperature and operating voltage
ranges while still maintaining the minimum speci-
fied recording duration. This will result in some
devices having a few percent more than nominal
recording time. If greater precision is required, the
device can be clocked through the XCLK pin as
follows:
These recommended clock rates should not be
varied because the antialiasing and smoothing fil-
ters are fixed, and aliasing problems can occur if
the sample rate differs from the one recom-
mended. The duty cycle on the input clock is not
critical, as the clock is immediately divided by two
internally.
IF
THE
XCLK
IS
NOT
USED
,
THIS
INPUT
SHOULD
BE
CONNECTED
TO
GROUND
.
Speaker Outputs (SP+, SP–)
The SP+ and SP– pins provide direct drive for
loudspeakers with impedances as low as 16
ohms. A single output may be used, but, for
direct-drive loudspeakers, the two opposite-polar-
ity outputs provide an improvement in output
power of up to four times over a single-ended con-
nection. Furthermore, when SP+ and SP– are
used, a speaker-coupling capacitor is not
required. A single-ended connection will require
an AC-coupling capacitor between the SP pin and
the speaker. The speaker outputs are in a high-
impedance state during a Record cycle, and held
at V
SSA
during Power Down.
Address Inputs (A0-A7)
The Address Inputs have two functions, depend-
ing upon the level of the two Most Significant Bits
(MSB) of the address.
If either of the two MSBs is LOW, the inputs are all
interpreted as address bits and are used as the
start address for the current Record or Playback
cycle. The address pins are inputs only and do not
output internal address information as the opera-
tion progresses. Address inputs are latched by
the falling edge of PLAYE, PLAYL,or REC.
OPERATIONAL MODES
The ISD1200 Series is designed with several built-
in operational modes provided to allow maximum
functionality with a minimum of additional compo-
nents, described in detail below. The operational
modes use the address pins on the ISD1200
devices, but are mapped outside the valid
address range. When the two Most Significant Bits
(MSBs) are HIGH (A6 and A7), the remaining
address signals are interpreted as mode bits and
Part
Number Sample Rate Required Clock
ISD1210 6.4 KHz 819.2 KHz
ISD1212 5.3 KHz 682.7 KHz
08.DataBook_1200 Dsht Page 43 Friday, September 27, 1996 10:59 AM
1–44
Product Data Sheets
ISD1200 Series
-1
NOT
as address bits. Therefore, operational
modes and direct addressing are not compatible
and cannot be used simultaneously.
There are two important considerations for using
operational modes. First, all operations begin ini-
tially at address 0, which is the beginning of the
ISD1200 address space. Later operations can
begin at other address locations, depending on
the operational mode(s) chosen. In addition, the
address pointer is reset to 0 when the device is
changed from Record to Playback but not from
Playback to Record when A4 is HIGH in Opera-
tional Mode.
Second, an Operational Mode is executed when
any of the control inputs, PLAYE, PLAYL, or REC,
go LOW and the two MSBs are HIGH. This Oper-
ational Mode remains in effect until the next LOW-
going control input signal, at which point the cur-
rent address/mode levels are sampled and
executed.
NOTE
The two MSBs are on pins 9 and 10 for
each ISD1200 Series device.
OPERATIONAL MODES DESCRIPTION
The Operational Modes can be used in conjunc-
tion with a microcontroller, or they can be hard-
wired to provide the desired system operation.
A0 — Message Cueing
Message Cueing allows the user to skip through
messages, without knowing the actual physical
addresses of each message. Each control input
LOW pulse causes the internal address pointer to
skip to the next message. This mode should be
used for Playback only, and is typically used with
the A4 Operational Mode.
A1 — Delete EOM Markers
The A1 Operational Mode allows sequentially
recorded messages to be combined into a single
message with only one EOM marker set at the end
of the final message. When this operational mode
is configured, messages recorded sequentially
are played back as one continuous message.
NOTE:
Indicates additional operational modes that can be used simultaneously with the given mode.
Address Crtl.
(HIGH) Function Typical Use Jointly
Compatible*
A0 Message cueing Fast-forward through messages A4
A1 Delete EOM markers Position EOM marker at the end of the
last message A3, A4
A2 Unused
A3 Looping Continuous playback from Address 0 A1
A4 Consecutive addressing Record/Play multiple consecutive
messages A0, A1
A5 Unused
OPERATIONAL MODES TABLE
08.DataBook_1200 Dsht Page 44 Friday, September 27, 1996 10:59 AM
Product Data Sheets
ISD1200 Series
1–45
1
A2 — Unused
A3 — Message Looping
The A3 Operational Mode allows for the auto-
matic, continuously repeated playback of the
message located at the beginning of the address
space.
A message can completely fill the ISD1200 device
and will loop from beginning to end. Pulsing
PLAYE will start the Playback and pulsing PLAYL
will end the Playback.
A4 — Consecutive Addressing
During normal operations, the address pointer will
reset when a message is played through to an
EOM marker. The A4 Operational Mode inhibits
the address pointer reset, allowing messages to
be recorded or played back consecutively. When
the device is in a static state; i.e., not recording or
playing back, momentarily taking this pin LOW will
reset the address counter to zero.
A5 — Unused
08.DataBook_1200 Dsht Page 45 Friday, September 27, 1996 10:59 AM
Product Data Sheets
ISD1200 Series
1–46
-1
A0 - A7
PLAYL
SP+/-
TPLAY
PLAYE
REC
THOLD
TSET THOLD
TSET THOLD
TSET
TPPUD TPPUD
TPPDD TPPDD
RECLED TEOM TEOM
A0 - A7
MIC/
ANA IN
TREC TREC
TLED1 TLED2
REC
RECLED
THOLD
TSET THOLD
TSET
TRPUD TRPDD
Playback
NOTES: 1.
REC must be HIGH for the entire duration of a Playback cycle.
2.
RECLED functions as an EOM during Playback.
TIMING DIAGRAMS
Record
08.DataBook_1200 Dsht Page 46 Friday, September 27, 1996 10:59 AM
Product Data Sheets
ISD1200 Series
1–47
1
ABSOLUTE MAXIMUM RATINGS
(PACKAGED PARTS)
NOTE:
Stresses above those listed may cause permanent
damage to the device. Exposure to the absolute
maximum ratings may affect device reliability.
Functional operation is not implied at these
conditions.
Condition Value
Junction temperature 150
°
C
Storage temperature range –65° C to +150° C
Voltage applied to any pin (VSS – 0.3 V) to
(VCC + 0.3 V)
Voltage applied to any pin
(Input current limited to ±20 mA) (VSS – 1.0 V) to
(VCC + 1.0 V)
Lead temperature (soldering –
10 seconds) 300° C
VCC - VSS – 0.3 V to + 7.0 V
OPERATING CONDITIONS
(PACKAGED PARTS)
NOTES: 1.
Case temperature.
2.
V
CC
= V
CCA
= V
CCD
.
3.
V
SS
= V
SSA
= V
SSD
.
Condition Value
Commercial operating
temperature range(1) 0° C to +70° C
Supply voltage (VCC)(2) +4.5 V to +5.5 V
Ground voltage (VSS)(3) 0 V
DC PARAMETERS (PACKAGED PARTS)
Symbol Parameters Min(2) Typ (1) Max(2) Units Conditions
VIL Input Low Voltage 0.8 V
VIH Input High Voltage 2.4 V
VOL Output Low Voltage 0.4 V IOL = 4.0 mA
VOH Output High Voltage 2.4 V IOH = – 1.6 mA
ICC VCC Current (Operating) 15 30 mA VCC = 5.5 V (3), REXT = ∞
ISB VCC Current (Standby) 0.5 10 µA(3) (4)
IIL Input Leakage Current ±1µA
IILPD Input Current HIGH w/Pull
Down 130 µAForce VCC (5)
REXT Output Load Impedance 16 ΩSpeaker Load
RMIC Preamp In Input Resistance 10 KΩPins 17, 18
08.DataBook_1200 Dsht Page 47 Friday, September 27, 1996 10:59 AM
1–48
Product Data Sheets
ISD1200 Series
-1
NOTES: 1.
Typical values @ T
A
= 25
°
C and 5.0 V.
2.
All Min/Max limits are guaranteed by ISD via electrical testing or characterization.
Not all specifications are 100% tested.
3.
V
CCA
and V
CCD
connected together.
4.
REC, PLAYL, and PLAYE must be at V
CCD
.
5.
Pin 26.
AC PARAMETERS (PACKAGED PARTS)
RANA IN ANA IN Input Resistance 3 KΩ
APRE1 Preamp Gain 1 24 dB AGC = 0.0 V
APRE2 Preamp Gain 2 – 45 – 15 dB AGC = 2.5 V
AARP ANA IN to SP+/- Gain 22 dB
RAGC AGC Output Resistance 5 KΩ
IPREH Preamp Out Source – 2 mA @ VOUT = 1.0 V
IPREL Preamp In Sink 0.5 mA @ VOUT = 2.0 V
Symbol Characteristic Min(2) Typ (1) Max(2) Units Conditions
FSSampling Frequency — ISD1210
— ISD1212 6.4
5.3 KHz
KHz (5)
(5)
FCF Filter Pass Band — ISD1210
— ISD1212 2.6
2.2 KHz
KHz 3 dB Roll-Off Point (3)(6)
3 dB Roll-Off Point (3)(6)
TREC Record Duration — ISD1210
— ISD1212 10
12 sec
sec
TPLAY Playback Duration — ISD1210
— ISD1212 10
12 sec
sec (5)
(5)
TLED1 RECLED ON Delay 5 msec
TLED2 RECLED OFF Delay — ISD1210
— ISD1212 40
50 48.6
58.3 100
105 msec
msec
TSET Address Setup Time 300 nsec
THOLD Address Hold Time 0 nsec
TRPUD Record Power- — ISD1210
Up Delay — ISD1212 32
39 msec
msec
TRPDD Record Power- — ISD1210
Down Delay — ISD1212 32
39 msec
msec
Symbol Parameters Min(2) Typ (1) Max(2) Units Conditions
DC PARAMETERS (PACKAGED PARTS) – CONTINUED
08.DataBook_1200 Dsht Page 48 Friday, September 27, 1996 10:59 AM
1–49
Product Data Sheets ISD1200 Series
1
NOTES: 1.
Typical values @ T
A
= 25
°
C, 5.0 V, and 6.4 KHz sample rate.
2.
All Min/Max limits are guaranteed by ISD via electrical testing or characterization.
Not all specifications are 100% tested.
3.
Low-frequency cutoff depends upon value of external capacitors (see Pin Descriptions).
4.
With 5.1 K
Ω
series resistor at ANA IN.
5.
Sampling frequency and Playback duration will vary as much as
±
2.25% over the commercial temperature
and voltage ranges. All devices will meet the maximum sampling frequency and minimum Playback duration
parameters. For greater stability, an external clock can be utilized (see Pin Descriptions).
6.
Filter specification applies to the antialiasing filter and to the smoothing filter.
TPPUD Play Power- — ISD1210
Up Delay — ISD1212 32
39 msec
msec
TPPDD Play Power- — ISD1210
Down Delay — ISD1212 8.1
9.7 msec
msec
TEOM EOM Pulse Width — ISD1210
— ISD1212 15.625
18.75 msec
msec
THD Total Harmonic Distortion 1 % @ 1 KHz
POUT Speaker Output Power 12.2 mW REXT = 16 Ω
VOUT Voltage Across Speaker Pins 1.25 2.5 V p–p REXT = 600 Ω
VIN1 MIC Input Voltage 20 mV Peak-to-Peak (4)
VIN2 ANA IN Input Voltage 50 mV Peak-to-Peak
Symbol Characteristic Min(2) Typ (1) Max(2) Units Conditions
AC PARAMETERS (PACKAGED PARTS) – CONTINUED
08.DataBook_1200 Dsht Page 49 Friday, September 27, 1996 10:59 AM
Product Data Sheets
ISD1200 Series
1–50
-1
TYPICAL PARAMETER VARIATION WITH VOLTAGE AND TEMPERATURE
(PACKAGED PARTS)
-40 25 70 85
1.5
1.0
0.5
0
-0.5
-1.0
-1.5
-2.0
-40
0.30
0.25
0.20
0.15
0.10
0
25 70 85
-40 25 70 85
14
12
10
8
6
4
2
0
-40
0.5
0.4
0.3
0.2
0.1
0
25 70 85
5.5 Volts 4.5 Volts
Operating Current (mA)
Temperature (C)
Standby Current (µA)
Temperature (C)
Percent Change (%)
Temperature (C)
Percent Distortion (%)
Temperature (C)
TOTAL HARMONIC DISTORTION OSCILLATOR STABILITY
RECORD MODE OPERATING CURRENT (ICC)STANDBY CURRENT (ISB)
08.DataBook_1200 Dsht Page 50 Friday, September 27, 1996 10:59 AM
1–51
Product Data Sheets ISD1200 Series
1
ABSOLUTE MAXIMUM RATINGS (DIE)
NOTE:
Stresses above those listed may cause permanent
damage to the device. Exposure to the absolute
maximum ratings may affect device reliability.
Functional operation is not implied at these
conditions.
Condition Value
Junction temperature 150° C
Storage temperature range –65° C to +150° C
Voltage applied to any pad (VSS - 0.3 V) to
(VCC + 0.3 V)
Voltage applied to any pad
(Input current limited to ±20 mA) (VSS – 1.0 V) to
(VCC + 1.0 V)
VCC - VSS – 0.3 V to + 7.0 V
OPERATING CONDITIONS (DIE)
NOTES: 1.
V
CC
= V
CCA
= V
CCD
.
2.
V
SS
= V
SSA
= V
SSD
.
Condition Value
Commercial operating
temperature range 0° C to +50° C
Supply voltage (VCC)(1) +4.5 V to +6.5 V
Ground voltage (VSS)(2) 0 V
DC PARAMETERS (DIE)
Symbol Parameters Min(2) Typ (1) Max(2) Units Conditions
VIL Input Low Voltage 0.8 V
VIH Input High Voltage 2.4 V
VOL Output Low Voltage 0.4 V IOL = 4.0 mA
VOH Output High Voltage 2.4 V IOH = – 1.6 mA
ICC VCC Current (Operating) 15 30 mA VCC = 5.5 V (3), REXT = ∞
ISB VCC Current (Standby) 0.5 10 µA(3) (4)
IIL Input Leakage Current ±1µA
IILPD Input Current HIGH w/Pull
Down 130 µAForce VCC (5)
REXT Output Load Impedance 16 ΩSpeaker Load
RMIC Preamp In Input Resistance 10 KΩPins 17, 18
08.DataBook_1200 Dsht Page 51 Friday, September 27, 1996 10:59 AM
1–52
Product Data Sheets
ISD1200 Series
-1
NOTES: 1.
Typical values @ T
A
= 25
°
C and 5.0 V.
2.
All Min/Max limits are guaranteed by ISD via electrical testing or characterization.
Not all specifications are 100% tested.
3.
V
CCA
and V
CCD
connected together.
4.
REC, PLAYL, and PLAYE must be at V
CCD
.
5.
Pin 26.
AC PARAMETERS (DIE)
RANA IN ANA IN Input Resistance 3 KΩ
APRE1 Preamp Gain 1 24 dB AGC = 0.0 V
APRE2 Preamp Gain 2 – 45 – 15 dB AGC = 2.5 V
AARP ANA IN to SP+/- Gain 22 dB
RAGC AGC Output Resistance 5 KΩ
IPREH Preamp Out Source – 2 mA @ VOUT = 1.0 V
IPREL Preamp In Sink 0.5 mA @ VOUT = 2.0 V
Symbol Characteristic Min(2) Typ (1) Max(2) Units Conditions
FSSampling Frequency — ISD1210
— ISD1212 6.4
5.3 KHz
KHz (5)
(5)
FCF Filter Pass Band — ISD1210
— ISD1212 2.6
2.2 KHz
KHz 3 dB Roll-Off Point (3)(6)
3 dB Roll-Off Point (3)(6)
TREC Record Duration — ISD1210
— ISD1212 10
12 sec
sec
TPLAY Playback Duration — ISD1210
— ISD1212 10
12 sec
sec (5)
(5)
TLED1 RECLED ON Delay 5 msec
TLED2 RECLED OFF Delay — ISD1210
— ISD1212 40
50 48.6
58.3 100
105 msec
msec
TSET Address Setup Time 300 nsec
THOLD Address Hold Time 0 nsec
TRPUD Record Power- — ISD1210
Up Delay — ISD1212 32
39 msec
msec
TRPDD Record Power- — ISD1210
Down Delay — ISD1212 32
39 msec
msec
Symbol Parameters Min(2) Typ (1) Max(2) Units Conditions
DC PARAMETERS (DIE) – CONTINUED
08.DataBook_1200 Dsht Page 52 Friday, September 27, 1996 10:59 AM
1–53
Product Data Sheets ISD1200 Series
1
NOTES: 1.
Typical values @ T
A
= 25
°
C, 5.0 V, and 6.4 KHz sample rate.
2.
All Min/Max limits are guaranteed by ISD via electrical testing or characterization.
Not all specifications are 100% tested.
3.
Low-frequency cutoff depends upon value of external capacitors (see Pin Descriptions).
4.
With 5.1 K
Ω
series resistor at ANA IN.
5.
Sampling frequency and Playback duration will vary as much as
±
2.25% over the commercial temperature
and voltage ranges. All devices will meet the maximum sampling frequency and minimum Playback duration
parameters. For greater stability, an external clock can be utilized (see Pin Descriptions).
6.
Filter specification applies to the antialiasing filter and to the smoothing filter.
TPPUD Play Power- — ISD1210
Up Delay — ISD1212 32
39 msec
msec
TPPDD Play Power- — ISD1210
Down Delay — ISD1212 8.1
9.7 msec
msec
TEOM EOM Pulse Width — ISD1210
— ISD1212 15.625
18.75 msec
msec
THD Total Harmonic Distortion 1 % @ 1 KHz
POUT Speaker Output Power 12.2 mW REXT = 16 Ω
VOUT Voltage Across Speaker Pins 1.25 2.5 V p–p REXT = 600 Ω
VIN1 MIC Input Voltage 20 mV Peak-to-Peak (4)
VIN2 ANA IN Input Voltage 50 mV Peak-to-Peak
Symbol Characteristic Min(2) Typ (1) Max(2) Units Conditions
AC PARAMETERS (DIE) – CONTINUED
08.DataBook_1200 Dsht Page 53 Friday, September 27, 1996 10:59 AM
Product Data Sheets
ISD1200 Series
1–54
-1
TYPICAL PARAMETER VARIATION WITH VOLTAGE AND TEMPERATURE (DIE)
15
10
5
0
0.5
0.4
0.3
0.2
0.1
0
02550
02550
0.35
0.30
0.25
0.20
0.15
0.10
0
02550
02550
-1.5
2.5
1.5
1.0
0.5
0
-0.5
-1.0
2.0
6.5 Volts 5.5 Volts 4.5 Volts
Operating Current (mA)
Temperature (C)
Standby Current (µA)
Temperature (C)
Percent Change (%)
Temperature (C)
Percent Distortion (%)
Temperature (C)
TOTAL HARMONIC DISTORTION OSCILLATOR STABILITY
RECORD MODE OPERATING CURRENT (ICC)STANDBY CURRENT (ISB)
08.DataBook_1200 Dsht Page 54 Friday, September 27, 1996 10:59 AM
Product Data Sheets ISD1200 Series
1–55
1
SSD
SSA
A0
A1
A2
A3
A4
A5
A6
A7
PLAYL
PLAYE
REC
RECLED
XCLK
V
V
V
V
SP+
SP–
ANA IN
ANA OUT
MIC REF
MIC
AGC
CCD
CCA
C3
1
2
3
4
5
6
9
10
23
24
27
25
26
28
16
12
13
14
15
20
21
18
17
19
ELECTRET
MICROPHONE
0.1 µF
RECORD
PLAYE
PLAYL
ISD1200
16 Ω
SPEAKER
0.1 µF
C4
0.1 µF
C6
4.7 µF
470 KΩ
R5
5.1 KΩ
R2
C5
0.1 µF
10 KΩ
R3
10 KΩ
R4
220 µF
C1
C2
1 KΩ
R1
CC
V
0.001 µF
C7
1 KΩ
R9
D1
REC
LED
100 KΩ
R7100 KΩ
R8
100 KΩ
R6
S1
S2
S3
FUNCTIONAL DESCRIPTION EXAMPLE
The following example operating sequence dem-
onstrates the functionality of the ISD1200 Series
devices.
1. Record a message filling the address
space.
Pulling the REC signal LOW initiates a
Record cycle from the beginning of the
message space. If REC is held LOW, the
Recording continues until the message
space has been filled. Once the message
space is filled, Recording ceases. The
device will automatically power down after
REC is pulled HIGH.
2. Edge-activated playback.
Pulling the PLAYE signal LOW initiates a
Playback cycle from the beginning of the
message space or at a selected location.
The rising edge of PLAYE has no effect on
operation. If a Recording has filled the mes-
sage space, the entire message is played.
When the device reaches the EOM marker,
it automatically powers down. A subse-
quent falling edge on PLAYE initiates a new
Play cycle from the start address.
3. Level-activated playback.
Pulling the PLAYL signal LOW initiates a
Playback cycle from the beginning of the
message space or a selected location. If
Recording has filled the message space,
the entire message is played. When the
device reaches the EOM marker, it auto-
matically powers down. A subsequent
falling edge on PLAYL initiates a new Play
cycle from the starting address.
4. Level-activated playback (truncated).
If PLAYL is pulled HIGH any time during the
Playback cycle, the device stops playing
and enters the power-down mode. A sub-
sequent falling edge on PLAYL initiates a
new Play cycle from the start address.
APPLICATION EXAMPLE
08.DataBook_1200 Dsht Page 55 Friday, September 27, 1996 10:59 AM
Product Data Sheets
ISD1200 Series
1–56
-1
5. Record (interrupting Playback).
The REC signal takes precedence over
other operations. Any LOW-going transition
on REC initiates a new Record operation
from the beginning of the start address or
at a selected location, regardless of any
current operation in progress.
6. Record a message, partially filling the
address space.
A record operation need not fill the entire
message space. Releasing the REC signal
HIGH before filling the message space
causes the recording to stop and an EOM
to be placed. The device powers down
automatically.
7. Play back a message, partially filling the
address space.
Pulling the PLAYE or PLAYL signal LOW ini-
tiates a Playback cycle which is then
completed when the EOM marker is
encountered. Playback ceases and the
device powers down.
8. RECLED operation.
The RECLED output pin provides an active-
LOW signal which can be used to drive an
LED as a “record-in-progress” indicator. It
returns to a HIGH state when the REC pin is
released HIGH or when the recording is
completed due to the message space
being filled. This pin also pulses LOW to
indicate an EOM at the end of a message
being played.
APPLICATIONS NOTE
Some users may experience an unexpected
recording taking place when their circuit is pow-
ered up, or the batteries are changed and VCC
rises faster than REC. This undesired recording
prevents playback of the previously recorded
message. A spurious End Of Message (EOM)
marker appears at the very beginning of the mem-
ory, preventing access to the original message,
and nothing is played.
To prevent this occurrence, place a capacitor
(approx. 0.001 µF) between the control pin (REC)
and VCC. This pulls the control pin voltage up with
VCC as it rises. Once the voltage is HIGH, the pull-
up device will keep the pin HIGH until intentionally
pulled LOW, preventing the false EOM marker.
Since this anomaly depends on factors such as
the capacitance of the user’s printed circuit
board, not all circuit designs will exhibit the spuri-
ous marker. However, it is recommended that the
capacitor is included for design reliability. A more
detailed explanation and resolution of this occur-
rence is described in the
ISD Application Notes
and Design Manual
in this book.
08.DataBook_1200 Dsht Page 56 Friday, September 27, 1996 10:59 AM
Product Data Sheets ISD1200 Series
1–57
1
ORDERING INFORMATION
Part Number Part Number
ISD1210G ISD1212G
ISD1210P ISD1212P
ISD1210X ISD1212X
ISD12 _ _ _ _
ISD1200 Series
Duration:
10 = 10 Seconds
12 = 12 Seconds
Special Temperature Field:
Blank = Commercial Packaged (0˚C to +70˚C)
or Commercial Die (0˚C to +50˚C)
Package Type:
G = 28-Lead 0.350-Inch Small Outline Integrated Circuit
(SOIC)
P = 28- Lead 0.600-Inch Plastic Dual In-Line Package
(PDIP)
X = Die
Product Number Descriptor Key
When ordering ISD1200 Series devices, please refer to the following valid part numbers.
For the latest product information, access ISD’s worldwide website at http://www.isd.com.
08.DataBook_1200 Dsht Page 57 Friday, September 27, 1996 10:59 AM
1–58
Product Data Sheets
ISD1200 Series
-1
08.DataBook_1200 Dsht Page 58 Friday, September 27, 1996 10:59 AM
