FEATURES
●LOW OFFSET VOLTAGE: 50µV max
●LOW DRIFT: 0.5µV/°C max
●LOW INPUT BIAS CURRENT: 5nA max
●HIGH CMR: 120dB min
●INPUTS PROTECTED TO ±40V
●WIDE SUPPLY RANGE: ±2.25V to ±18V
●LOW QUIESCENT CURRENT: 700µA / IA
●16-PIN PLASTIC DIP, SOL-16
DESCRIPTION
The INA2128 is a dual, low power, general purpose instrumen-
tation amplifier offering excellent accuracy. Its versatile
3-op amp design and small size make it ideal for a wide range
of applications. Current-feedback input circuitry provides wide
bandwidth even at high gain (200kHz at G = 100).
A single external resistor sets any gain from 1 to 10,000.
Internal input protection can withstand up to ±40V without
damage.
The INA2128 is laser-trimmed for very low offset voltage
(50µV), drift (0.5µV/°C) and high common-mode rejection
(120dB at G ≥ 100). It operates with power supplies as low as
±2.25V, and quiescent current is only 700µA per IA—ideal for
battery-operated and multiple-channel systems.
The INA2128 is available in SOL-16 packages, specified
for the –40°C to +85°C temperature range.
APPLICATIONS
●SENSOR AMPLIFIER
THERMOCOUPLE, RTD, BRIDGE
●MEDICAL INSTRUMENTATION
●MULTIPLE-CHANNEL SYSTEMS
●BATTERY OPERATED EQUIPMENT
Dual, Low Power
INSTRUMENTATION AMPLIFIER
A1A
A2A
A3A
40kΩ40kΩ
40kΩ40kΩ
VINA 1
3
4
2
16
14
13
15
7
6
5
10
11
12
VINA
RGA
V+
V–
INA2128
RefA
VOA
GA = 1 + 50kΩ
RGA
–
+
Over-Voltage
Protection
25kΩ
25kΩ
Over-Voltage
Protection
A1B
A2B
A3B
40kΩ40kΩ
8
9
40kΩ40kΩ
VINB
VINB
RGB
RefB
VOB
GB = 1 + 50kΩ
RGB
–
+
Over-Voltage
Protection
25kΩ
25kΩ
Over-Voltage
Protection
INA2128
INA2128
INA2128
SBOS035A – DECEMBER 1995 – REVISED APRIL 2007
Copyright © 1995-2007, Texas Instruments Incorporated
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
www.ti.com
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
All trademarks are the property of their respective owners.
INA2128
2SBOS035A
www.ti.com
Supply Voltage .................................................................................. ±18V
Analog Input Voltage Range ............................................................. ±40V
Output Short-Circuit (to ground).............................................. Continuous
Operating Temperature ..................................................–40°C to +125°C
Storage Temperature .....................................................–55°C to +125°C
Junction Temperature.................................................................... +150°C
NOTE: (1) Stresses above these ratings may cause permanent damage.
Exposure to absolute maximum conditions for extended periods may degrade
device reliability.
ABSOLUTE MAXIMUM RATINGS(1)
PIN CONFIGURATION
Top View SOIC
VINA
VINA
RGA
RGA
VINB
VINB
RGB
RGB
1
2
3
4
RefA
VOA
SenseA
V–
5
6
7
8
16
15
14
13
RefB
VOB
SenseB
V+
12
11
10
9
–
+
–
+
ORDERING INFORMATION(1)
PACKAGE TEMPERATURE
PRODUCT PACKAGE-LEAD DESIGNATOR RANGE
INA2128UA SOIC-16 DW –40°C to +85°C
INA2128U SOIC-16 DW –40°C to +85°C
NOTES: (1) For the most current package and ordering information, see the
Package Option Addendum at the end of this document, or see the TI web site
at www.ti.com.
ELECTROSTATIC
DISCHARGE SENSITIVITY
This integrated circuit can be damaged by ESD. Texas Instru-
ments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling
and installation procedures can cause damage.
ESD damage can range from subtle performance degradation
to complete device failure. Precision integrated circuits may be
more susceptible to damage because very small parametric
changes could cause the device not to meet its published
specifications.
INA2128 3
SBOS035A www.ti.com
ELECTRICAL CHARACTERISTICS
At TA = +25°C, VS = ±15V, RL = 10k Ω, unless otherwise noted.
INA2128U INA2128UA
PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
INPUT
Offset Voltage, RTI
Initial TA = +25°C±10 ±100/G ±50 ±500/G ±25 ±100/G ±125 ±1000/G µV
vs Temperature TA = TMIN to TMAX ±0.2 ± 2/G ±0.5 ± 20/G ±0.2 ± 5/G ±1 ± 20/G µV/°C
vs Power Supply VS = ±2.25V to ±18V ±0.2 ±20/G ±1 ±100/G ✻±2 ±200/G µV/V
Long-Term Stability ±0.1 ±3/G ✻µV/mo
Impedance, Differential 1010 || 2 ✻Ω || pF
Common-Mode 1011 || 9 ✻Ω || pF
Common-Mode Voltage Range(1) VO = 0V (V+) – 2 (V+) – 1.4 ✻✻ V
(V–) + 2 (V–) + 1.7 ✻✻ V
Safe Input Voltage ±40 ✻V
Common-Mode Rejection VCM = ±13V, ∆RS = 1kΩ
G=1 80 86 73 ✻dB
G=10 100 106 93 ✻dB
G=100 120 125 110 ✻dB
G=1000 120 130 110 ✻dB
BIAS CURRENT ±2±5✻±10 nA
vs Temperature ±30 ✻pA/°C
Offset Current ±1±5✻±10 nA
vs Temperature ±30 ✻pA/°C
NOISE VOLTAGE, RTI G = 1000, RS = 0Ω
f = 10Hz 10 ✻nV/√Hz
f = 100Hz 8 ✻nV/√Hz
f = 1kHz 8 ✻nV/√Hz
fB = 0.1Hz to 10Hz 0.2 ✻µVPP
Noise Current
f=10Hz 0.9 ✻pA/√Hz
f=1kHz 0.3 ✻pA/√Hz
fB = 0.1Hz to 10Hz 30 ✻pAPP
GAIN
Gain Equation 1 + (50kΩ/RG)✻V/V
Range of Gain 1 10000 ✻✻V/V
Gain Error G=1 ±0.01 ±0.024 ✻±0.1 %
G=10 ±0.02 ±0.4 ✻±0.5 %
G=100 ±0.05 ±0.5 ✻±0.7 %
G=1000 ±0.5 ±1✻±2%
Gain vs Temperature(2) G=1 ±1±10 ✻✻ppm/°C
50kΩ Resistance(2, 3) ±25 ±100 ✻✻ppm/°C
Nonlinearity VO = ±13.6V, G=1 ±0.0001 ±0.001 ✻±0.002 % of FSR
G=10 ±0.0003 ±0.002 ✻±0.004 % of FSR
G=100 ±0.0005 ±0.002 ✻±0.004 % of FSR
G=1000 ±0.001 (Note 4) ✻✻% of FSR
OUTPUT
Voltage: Positive RL = 10kΩ(V+) – 1.4 (V+) – 0.9 ✻✻ V
Negative RL = 10kΩ(V–) + 1.4 (V–) + 0.8 ✻✻ V
Load Capacitance Stability 1000 ✻pF
Short-Circuit Current +6/–15 ✻mA
FREQUENCY RESPONSE
Bandwidth, –3dB G=1 1.3 ✻MHz
G=10 700 ✻kHz
G=100 200 ✻kHz
G=1000 20 ✻kHz
Slew Rate VO = ±10V, G=10 4 ✻V/µs
Settling Time, 0.01% G=1 7 ✻µs
G=10 7 ✻µs
G=100 9 ✻µs
G=1000 80 ✻µs
Overload Recovery 50% Overdrive 4 ✻µs
POWER SUPPLY
Voltage Range ±2.25 ±15 ±18 ✻✻ ✻V
Current, Total VIN = 0V ±1.4 ±1.5 ✻✻mA
TEMPERATURE RANGE
Specification –40 85 ✻✻°C
Operating –40 125 ✻✻°C
θ
JA 80 ✻°C/W
✻ Specification same as INA2128P, U.
NOTE: (1) Input common-mode range varies with output voltage—see Electrical Characteristics.
(2) Ensured by wafer test.
(3) Temperature coefficient of the
50k
Ω
term in the gain equation.
(4) Nonlinearity measurements in G = 1000 are dominated by noise. Typical nonlinearity is ±0.001%.
INA2128
4SBOS035A
www.ti.com
INPUT COMMON-MODE RANGE
vs OUTPUT VOLTAGE, VS = ±5, ±2.5V
Output Voltage (V)
Common-Mode Voltage (V)
–5
5
4
3
2
1
0
–1
–2
–3
–4
–5–4–3–2–1012345
VS = ±5V
VS = ±2.5V
G = 1 G = 1
G ≥ 10 G ≥ 10
G ≥ 10
G = 1
INPUT COMMON-MODE RANGE
vs OUTPUT VOLTAGE, VS = ±15V
Output Voltage (V)
Common-Mode Voltage (V)
–15 –10 0 5 15–5
15
10
5
0
–5
–10
–15 10
G = 1 G = 1
G ≥ 10 G ≥ 10
V
D/2
–
+
–
+
V
CM
VO
V
D/2
Ref
–15V
+15V
+
TYPICAL CHARACTERISTICS
At TA = +25°C, VS = ±15V, unless otherwise noted.
POSITIVE POWER SUPPLY REJECTION
vs FREQUENCY
Frequency (Hz)
Power Supply Rejection (dB)
140
120
100
80
60
40
20
010 100 1k 10k 100k 1M
G = 100V/V
G = 1000V/V
G = 1V/V
G = 10V/V
GAIN vs FREQUENCY
60
50
40
30
20
10
0
–10
–20
Gain (dB)
Frequency (Hz)
1k 10k 100k 1M 10M
G = 100V/V
G = 10V/V
G = 1V/V
G = 1000V/V
COMMON-MODE REJECTION vs FREQUENCY
Frequency (Hz)
Common-Mode Rejection (dB)
10 100 10k 1M1k
140
120
100
80
60
40
20
0100k
G = 1V/V
G = 10V/V
G = 100V/V
G = 1000V/V
NEGATIVE POWER SUPPLY REJECTION
vs FREQUENCY
Frequency (Hz)
Power Supply Rejection (dB)
140
120
100
80
60
40
20
010 100 1k 10k 100k 1M
G = 100V/V
G = 1000V/V
G = 1V/V
G = 10V/V
INA2128 5
SBOS035A www.ti.com
TYPICAL CHARACTERISTICS (Continued)
At TA = +25°C, VS = ±15V, unless otherwise noted.
CROSSTALK vs FREQUENCY
Frequency (Hz)
Crosstalk (dB)
10 100 10k 1M1k
140
120
100
80
60
40
20
0100k
G = 1V/V
G = 10V/V
G = 100V/V
G = 1000V/V
G = 1000V/V
G = 100V/V
SETTLING TIME vs GAIN
Gain (V/V)
Settling Time (µs)
100
10
11 10 100 1000
0.01%
0.1%
OFFSET VOLTAGE WARM-UP
10
8
6
4
2
0
–2
–4
–6
–8
–10 010 20 30 40 50
Time (ms)
Offset Voltage Change (µV)
INPUT OVER-VOLTAGE V/I CHARACTERISTICS
5
4
3
2
1
0
–1
–2
–3
–4
–5
Input Current (mA)
Input Voltage (V)
–50 –40 –30 –20 –10 10 20 30 40050
G = 1V/V
G = 1V/V
G = 1000V/V
G = 1000V/V V
IN
I
IN
–15V
+15V
INA2128
1/2
Flat region represents
normal linear operation.
INPUT- REFERRED NOISE vs FREQUENCY
Frequency (Hz)
Input-Referred Voltage Noise (nV/√ Hz)
110 1k100
1k
100
10
110k
G = 1V/V
G = 10V/V
100
10
1
0.1
Input Bias Current Noise (pA/√ Hz)
Current Noise
G = 100, 1000V/V
QUIESCENT CURRENT and SLEW RATE
vs TEMPERATURE
Temperature (°C)
Quiescent Current (µA)
1.7
1.6
1.5
1.4
1.3
1.2
6
5
4
3
2
1
–75 –50 –25 0 25 50 75 100 125
Slew Rate (V/µs)
I
Q
Slew Rate
INA2128
6SBOS035A
www.ti.com
TYPICAL CHARACTERISTICS (Continued)
At TA = +25°C, VS = ±15V, unless otherwise noted.
MAXIMUM OUTPUT VOLTAGE vs FREQUENCY
Frequency (Hz)
Peak-to-Peak Output Voltage (Vpp)
30
25
20
15
10
5
01k 10k 100k 1M
G = 1
G = 10, 100
G = 1000
SHORT-CIRCUIT OUTPUT CURRENT
vs TEMPERATURE
16
14
12
10
8
6
4
2
0–75 –50 –25 0 25 50 75 100 125
Temperature (°C)
Short Circuit Current (mA)
–I
SC
+I
SC
OUTPUT VOLTAGE SWING
vs POWER SUPPLY VOLTAGE
V+
(V+)–0.4
(V+)–0.8
(V+)–1.2
(V–)+1.2
(V–)+0.8
(V–)+0.4
V–0 5 10 15 20
Power Supply Voltage (V)
Output Voltage Swing (V)
+25°C+85°C
–40°C
+25°C
–40°C
+85°C
R
L
= 10kΩ
+85°C
–40°C
INPUT BIAS CURRENT vs TEMPERATURE
2
1
0
–1
–2–75 –50 –25 0 25 50 75 100 125
Temperature (°C)
Input Bias Current (nA)
I
OS
I
B
Typical I
B
and I
OS
Range ±2nA at 25°C
TOTAL HARMONIC DISTORTION + NOISE
vs FREQUENCY
Frequency (Hz)
THD+N (%)
100 1k 10k
1
0.1
0.01
0.001 100k
V
O
= 1Vrms G = 1
R
L
= 10kΩ
G = 10V/V
R
L
= 100kΩ
G = 100, R
L
= 100kΩ
G = 1, R
L
= 100kΩ
500kHz Measurement
Bandwidth
Dashed Portion
is noise limited.
OUTPUT VOLTAGE SWING
vs OUTPUT CURRENT
(V+)
(V+)–0.4
(V+)–0.8
(V+)–1.2
(V–)+1.2
(V–)+0.8
(V–)+0.4
V–01234
Output Current (mA)
Output Voltage (V)
INA2128 7
SBOS035A www.ti.com
TYPICAL CHARACTERISTICS (Continued)
At TA = +25°C, VS = ±15V, unless otherwise noted.
G = 1
G = 10
5µs/div
SMALL-SIGNAL STEP RESPONSE
(G = 1, 10)
G = 100
G = 1000
20µs/div
SMALL-SIGNAL STEP RESPONSE
(G = 100, 1000)
G = 1
G = 10
5µs/div
LARGE-SIGNAL STEP RESPONSE
(G = 1, 10)
G = 100
G = 1000
5µs/div
LARGE-SIGNAL STEP RESPONSE
(G = 100, 1000)
0.1µV/div
1s/div
VOLTAGE NOISE 0.1Hz to 10Hz
INPUT-REFERRED, G ≥ 100
20mV/div 20mV/div
5V/div5V/div
INA2128
8SBOS035A
www.ti.com
APPLICATION INFORMATION
Figure 1 shows the basic connections required for operation
of the INA2128. Applications with noisy or high impedance
power supplies may require decoupling capacitors close to
the device pins as shown.
The output is referred to the output reference (Ref) terminals
(RefA and RefB) which are normally grounded. These must
be low-impedance connections to assure good common-
mode rejection. A resistance of 8Ω in series with a Ref pin
will cause a typical device to degrade to approximately
80dB CMR (G = 1).
The INA2128 has separate output sense feedback connec-
tions, SenseA and SenseB. These must be connected to their
respective output terminals for proper operation. The output
sense connection can be used to sense the output voltage
directly at the load for best accuracy.
SETTING THE GAIN
Gain of the INA2128 is set by connecting a single external
resistor, RG, connected as shown:
Commonly-used gains and resistor values are shown in
Figure 1.
The 50kΩ term in Equation 1 comes from the sum of the two
internal feedback resistors, A1 and A2. These on-chip metal
film resistors are laser-trimmed to accurate absolute values.
The accuracy and temperature coefficient of these resistors
are included in the gain accuracy and drift specifications of
the INA2128.
The stability and temperature drift of the external gain
setting resistor, RG, also affects gain. RG’s contribution to
gain accuracy and drift can be directly inferred from the gain
equation (1). Low resistor values required for high gain can
make wiring resistance important. Sockets add to the wiring
resistance which will contribute additional gain error in
gains of approximately 100 or greater.
DYNAMIC PERFORMANCE
The typical performance curve “Gain vs Frequency” shows
that despite its low quiescent current, the INA2128 achieves
wide bandwidth, even at high gain. This is due to its current-
feedback topology. Settling time also remains excellent at
high gain—see “Settling Time vs Gain.”
NOISE PERFORMANCE
The INA2128 provides very low noise in most applications.
Low frequency noise is approximately 0.2µVPP measured
from 0.1 to 10Hz (G ≥ 100). This provides dramatically
improved noise when compared to state-of-the-art chopper-
stabilized amplifiers.
G=1+50kΩ
RG
(1)
FIGURE 1. Basic Connections.
DESIRED RGNEAREST 1% RG
GAIN (Ω)(Ω)
1NC NC
2 50.00k 49.9k
5 12.50k 12.4k
10 5.556k 5.62k
20 2.632k 2.61k
50 1.02k 1.02k
100 505.1 511
200 251.3 249
500 100.2 100
1000 50.05 49.9
2000 25.01 24.9
5000 10.00 10
10000 5.001 4.99
NC: No Connection.
A1
A2
A36
(11)
7 Sense
(10)
(12)
(13)
(14)
(16)
(15) 40kΩ40kΩ
40kΩ40kΩ
9
8
2
4
3
1
Pin numbers for
Channel B shown
in parentheses.
VIN
VIN
RG
V+
V–
INA2128
G = 1 + 50kΩ
RG
–
+5
Over-Voltage
Protection
25kΩ
25kΩ
Over-Voltage
Protection
Load
VO = G • (VIN – VIN)
+–
0.1µF
0.1µF
NOTE: If channel is unused,
connect inputs to ground, sense
to VO, and leave Ref open-circuit.
+
–
VO
RG
Also drawn in simplified form:
INA2128
Ref
VO
VIN
–
VIN
+
Ref
INA2128 9
SBOS035A www.ti.com
OFFSET TRIMMING
The INA2128 is laser-trimmed for low offset voltage and
offset voltage drift. Most applications require no external
offset adjustment. Figure 2 shows an optional circuit for
trimming the output offset voltage. The voltage applied to
Ref terminal is summed with the output. The op amp buffer
provides low impedance at the Ref terminal to preserve good
common-mode rejection.
FIGURE 3. Providing an Input Common-Mode Current Path.
voltage swing of amplifiers A1 and A2. So the linear com-
mon-mode input range is related to the output voltage of the
complete amplifier. This behavior also depends on supply
voltage—see performance curves “Input Common-Mode
Range vs Output Voltage.”
Input-overload can produce an output voltage that appears
normal. For example, if an input overload condition drives
both input amplifiers to their positive output swing limit, the
difference voltage measured by the output amplifier will be
near zero. The output of the INA2128 will be near 0V even
though both inputs are overloaded.
LOW VOLTAGE OPERATION
The INA2128 can be operated on power supplies as low as
±2.25V. Performance remains excellent with power sup-
plies ranging from ±2.25V to ±18V. Most parameters vary
only slightly throughout this supply voltage range—see
typical performance curves. Operation at very low supply
voltage requires careful attention to assure that the input
voltages remain within their linear range. Voltage swing
requirements of internal nodes limit the input common-
mode range with low power supply voltage. Typical perfor-
mance curves, “Input Common-Mode Range vs Output
Voltage,” show the range of linear operation for ±15V, ±5V,
and ±2.5V supplies.
47kΩ47kΩ
10kΩ
Microphone,
Hydrophone
etc.
Thermocouple
Center-tap provides
bias current return.
INA2128
1/2
INA2128
1/2
INA2128
1/2
10kΩ
OPA177
±10mV
Adjustment Range
100Ω(For other
channel)
100Ω
100µA
1/2 REF200
100µA
1/2 REF200
V+
V–
RGINA2128
1/2
Ref
VO
VIN
–
VIN
+
FIGURE 2. Optional Trimming of Output Offset Voltage.
INPUT BIAS CURRENT RETURN PATH
The input impedance of the INA2128 is extremely high—
approximately 1010Ω. However, a path must be provided for
the input bias current of both inputs. This input bias current
is approximately ±2nA. High input impedance means that
this input bias current changes very little with varying input
voltage.
Input circuitry must provide a path for this input bias current
for proper operation. Figure 3 shows various provisions for
an input bias current path. Without a bias current path, the
inputs will float to a potential which exceeds the common-
mode range of the INA2128 and the input amplifiers will
saturate.
If the differential source resistance is low, the bias current
return path can be connected to one input (see the thermo-
couple example in Figure 3). With higher source impedance,
using two equal resistors provides a balanced input with
possible advantages of lower input offset voltage due to bias
current and better high-frequency common-mode rejection.
INPUT COMMON-MODE RANGE
The linear input voltage range of the input circuitry of the
INA2128 is from approximately 1.4V below the positive
supply voltage to 1.7V above the negative supply. As a
differential input voltage causes the output voltage increase,
however, the linear input range will be limited by the output
INA2128
10 SBOS035A
www.ti.com
INPUT PROTECTION
The inputs of the INA2128 are individually protected for
voltages up to ±40V. For example, a condition of –40V on
one input and +40V on the other input will not cause
damage. Internal circuitry on each input provides low series
impedance under normal signal conditions. To provide
equivalent protection, series input resistors would contribute
excessive noise. If the input is overloaded, the protection
circuitry limits the input current to a safe value of approxi-
mately 1.5mA to 5mA. The typical performance curve
“Input Bias Current vs Common-Mode Input Voltage” shows
this input current limit behavior. The inputs are protected
even if the power supplies are disconnected or turned off.
CHANNEL CROSSTALK
The two channels of the INA2128 are completely indepen-
dent, including all bias circuitry. At DC and low frequency
there is virtually no signal coupling between channels.
Crosstalk increases with frequency and is dependent on
circuit gain, source impedance and signal characteristics.
As source impedance increases, careful circuit layout will
help achieve lowest channel crosstalk. Most crossstalk is
produced by capacitive coupling of signals from one channel
to the input section of the other channel. To minimize
coupling, separate the input traces as far as practical from
any signals associated with the opposite channel. A grounded
guard trace surrounding the inputs helps reduce stray cou-
pling between channels. Run the differential inputs of each
channel parallel to each other or directly adjacent on top and
bottom side of a circuit board. Stray coupling then tends to
produce a common-mode signal which is rejected by the
IA’s input.
FIGURE 5. Sum of Differences Amplifier.
FIGURE 4. Two-Axis Bridge Amplifier.
FIGURE 6. ECG Amplifier With Right-Leg Drive.
INA2128
1/2
R
G
/2
R
G
= 5.6kΩ
V
O
LA
RL
RA
10kΩ
Ref
NOTE: Due to the INA2128’s current-feedback
topology, V
G
is approximately 0.7V less than
the common-mode input voltage. This DC offset
in this guard potential is satisfactory for many
guarding applications.
G = 102.8kΩ
V
G
V
G
2.8kΩ
1/2
OPA2604
390kΩ
390kΩ
1/2
OPA2604
VO = GA (V2 – V1) + GB (V4 – V3)
V1
V2
Ref
V3
RGB
RGA
V4
Ref
INA2128
1/2
INA2128
1/2
X-axis
V
O
Y-axis
V
O
X-axis
Y-axis
V
EX
V
EX
INA2128
1/2
INA2128
1/2
PACKAGE OPTION ADDENDUM
www.ti.com 21-Aug-2010
Addendum-Page 1
PACKAGING INFORMATION
Orderable Device Status (1) Package Type Package
Drawing Pins Package Qty Eco Plan (2) Lead/
Ball Finish MSL Peak Temp (3) Samples
(Requires Login)
INA2128U ACTIVE SOIC DW 16 40 Green (RoHS
& no Sb/Br) Call TI Level-3-260C-168 HR Contact TI Distributor
or Sales Office
INA2128U/1K ACTIVE SOIC DW 16 1000 Green (RoHS
& no Sb/Br) Call TI Level-3-260C-168 HR Purchase Samples
INA2128U/1KE4 ACTIVE SOIC DW 16 1000 Green (RoHS
& no Sb/Br) Call TI Level-3-260C-168 HR Purchase Samples
INA2128UA ACTIVE SOIC DW 16 40 Green (RoHS
& no Sb/Br) Call TI Level-3-260C-168 HR Request Free Samples
INA2128UA/1K ACTIVE SOIC DW 16 1000 Green (RoHS
& no Sb/Br) Call TI Level-3-260C-168 HR Purchase Samples
INA2128UA/1KG4 ACTIVE SOIC DW 16 1000 Green (RoHS
& no Sb/Br) Call TI Level-3-260C-168 HR Purchase Samples
INA2128UAG4 ACTIVE SOIC DW 16 40 Green (RoHS
& no Sb/Br) Call TI Level-3-260C-168 HR Contact TI Distributor
or Sales Office
INA2128UG4 ACTIVE SOIC DW 16 40 Green (RoHS
& no Sb/Br) Call TI Level-3-260C-168 HR Contact TI Distributor
or Sales Office
(1) The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability
information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that
lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between
the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight
in homogeneous material)
(3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.
PACKAGE OPTION ADDENDUM
www.ti.com 21-Aug-2010
Addendum-Page 2
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information
provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
TAPE AND REEL INFORMATION
*All dimensions are nominal
Device Package
Type Package
Drawing Pins SPQ Reel
Diameter
(mm)
Reel
Width
W1 (mm)
A0
(mm) B0
(mm) K0
(mm) P1
(mm) W
(mm) Pin1
Quadrant
INA2128U/1K SOIC DW 16 1000 330.0 16.4 10.75 10.7 2.7 12.0 16.0 Q1
INA2128UA/1K SOIC DW 16 1000 330.0 16.4 10.75 10.7 2.7 12.0 16.0 Q1
PACKAGE MATERIALS INFORMATION
www.ti.com 14-Jul-2012
Pack Materials-Page 1
*All dimensions are nominal
Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm)
INA2128U/1K SOIC DW 16 1000 367.0 367.0 38.0
INA2128UA/1K SOIC DW 16 1000 367.0 367.0 38.0
PACKAGE MATERIALS INFORMATION
www.ti.com 14-Jul-2012
Pack Materials-Page 2
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