OUT A 1
–IN A 2
+IN A 3
V– 4
V+
8
OUT B
7
–IN B
6
+IN B
5
AD8634
TOP VIEW
(Not to Scale)
11524-001
AD8634 Data Sheet
Rev. B | Page 2 of 12
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
Pin Configuration ............................................................................. 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
Electrical Characteristics, VSY = ±15.0 V................................... 3
Electrical Characteristics, VSY = 3.0 V ....................................... 4
Absolute Maximum Ratings ............................................................ 5
Predicted Lifetime vs. Operating Temperature .........................5
Thermal Resistance .......................................................................5
ESD Caution...................................................................................5
Typical Performance Characteristics ..............................................6
Applications Information .............................................................. 10
Input Protection ......................................................................... 10
Outline Dimensions ....................................................................... 11
Ordering Guide .......................................................................... 11
REVISION HISTORY
9/15—Rev. A to Rev. B
Changes to Short-Circuit Current Parameter, Table 1 ................ 3
Changes to Short-Circuit Current Parameter, Table 2 ................ 4
Changes to Figure 13 ........................................................................ 7
7/14—Rev. 0 to Rev. A
Changes to Unity-Gain Crossover Parameter, Table 1 and
−3 dB Closed-Loop Bandwidth Parameter, Table 1 ..................... 3
Changes to Unity-Gain Crossover Parameter, Table 2 and
−3 dB Closed-Loop Bandwidth Parameter, Table 2 ..................... 4
7/13—Revision 0: Initial Version
1
100k
10k
1k
100
10
120 210200190180170160150140130
PREDICTED LIFETIME (Hours)
OPERATING TEMPERATURE (°C)
11524-126
80
70
60
50
40
30
20
10
0–100 –80 –60 –40 –20 0
VOS (µV)
NUMBER OF AMPLIFIERS
20 40 60 80 100
11524-120
25
20
15
10
5
00 0.05 0.10 0.15 0.20 0.25 0.30
TCVOS (µV/°C)
NUMBER OF AMPLIFIERS
0.35 0.40 0.45 0.50 0.55 0.60
11524-121
–100
–80
–60
–40
–20
0
20
40
–100 –50 050 100 150 200 250
OFFSET VOLTAGE (µV)
TEMPERATURE (°C)
VSY = ±15V
VCM = 0V
11524-104
0
10
20
30
40
50
60
–100
–95
–90
–85
–80
–75
–70
–65
–60
–55
–50
–45
–40
–35
–30
–25
–20
–15
–10
–5
0
NUMBER OF AMPLIFIERS
IB (nA)
11524-105
0
1
2
3
4
5
6
7
8
9
10
–2.6
–2.4
–2.2
–2.0
–1.8
–1.6
–1.4
–1.2
–1.0
–0.8
–0.6
–0.4
–0.2
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
2.2
2.4
2.6
NUMBER OF AMPLIFIERS
IOS (nA)
11524-106
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
–100 –50 050 100 150 200 250
INPUT BIAS CURRENT (nA)
TEMPERATURE (°C)
IB+
IB
11524-107
VSY = ±15V
VCM = 0V
1m
100
10
1
100m
10m
0.1 1 10 100
VOL VSS (V)
ILOAD (mA)
–40°C
+175°C
+210°C
11524-109
0
20
40
60
80
100
120
100 1k 10k 100k 1M 10M
CMRR (dB)
FREQUENCY (Hz)
VSY = ±15V
TA = 210°C
11524-110
–140
–120
–100
–80
–60
–40
–20
0
–16 –14 –12 –10 –8 –6 –4 –2 0 2 4 6 8 10 12 14 16
INPUT BIAS CURRENT (nA)
COMMON-MODE VOLTAGE (V)
–40°C
+25°C
+175°C
+210°C
11524-111
0.01 10 100 1000
VDD – VOH (V)
ILOAD (mA)
–40°C
+25°C
+210°C
11524-112
0.01
0.1
1
10
100
0.1 1
–20
0
20
40
60
80
100
120
100 1k 10k 100k 1M 10M 100M
PSRR (dB)
FREQUENCY (Hz)
+PSRR
–PSRR
11524-018
VSY = ±15V
TA = 210°C
–90
–45
0
45
90
135
180
–40
–20
0
20
40
60
80
1k 10k 100k 1M 10M 100M
PHASE MARGIN (Degrees)
11524-114
GAIN (dB)
FREQUENCY (Hz)
GAIN
PHASE MARGIN
VSY = ±15V
RL=10k
CH1 500mV CH2 500mV A CH1 0V
Δ: 1.85V
@: 920mV
Δ: 320ns
@: 140ns
CH1 AMPL
2.93V
11524-021
INPUT
OUTPUT
CH1 500mV CH2 500mV A CH1 0V
Δ: 1.69V
@: –750mV
Δ: 320ns
@: 140ns
CH1 AMPL
2.92V
11524-023
INPUT
OUTPUT
0
500
1000
1500
2000
2500
0 5 10 15 20 25 30 35
SUPPLY CURRENT (µA)
SUPPLY VOLTAGE (V)
–40°C
+25°C
+175°C
+210°C
11524-117
CH1 500mV CH2 500mV A CH1 0V
Δ: 1.61V
@: –710mV
Δ: 280ns
@: –140ns
CH1 AMPL
2.91V
11524-020
INPUT
OUTPUT
CH1 500mV CH2 500mV A CH1 0V
Δ: 1.67V
@: 830mV
Δ: 280ns
@: –140ns
CH1 AMPL
2.91V
11524-022
INPUT
OUTPUT
1
10
100
1000
10 100 1k 10k
VOLTAGE NOISE DENSITY (nV/√Hz)
FREQUENCY (Hz)
+25°C
+210°C
11524-125
VSY = ±15V
RS
R2
VIN
VOUT
1/2
AD8634
11524-075
11524-076
U2A
AD8634
U1
ADR225
VS
GND
OUTPUT
R1
2.5kΩ
C1
10µF C2
0.1µF C3
1µF C4
0.1µF
SIGNAL OUT
R2
2.5kΩ
R3
2.5kΩ
VCC
+5V
VCC
+5V
VCC
+5V
VEE
–5V
VEE
–5V
RTD
U3
AD8229
++
Data Sheet AD8634
Rev. B | Page 11 of 12
OUTLINE DIMENSIONS
CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS
(IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR
REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN.
COMPLIANT TO JEDEC STANDARDS MS-012-AA
012407-A
0.25 (0.0098)
0.17 (0.0067)
1.27 (0.0500)
0.40 (0.0157)
0.50 (0.0196)
0.25 (0.0099) 45°
1.75 (0.0688)
1.35 (0.0532)
SEATING
PLANE
0.25 (0.0098)
0.10 (0.0040)
4
1
85
5.00(0.1968)
4.80(0.1890)
4.00 (0.1574)
3.80 (0.1497)
1.27 (0.0500)
BSC
6.20 (0.2441)
5.80 (0.2284)
0.51 (0.0201)
0.31 (0.0122)
COPLANARITY
0.10
Figure 24. 8-Lead Standard Small Outline Package [SOIC_N]
Narrow Body
(R-8)
Dimensions shown in millimeters and (inches)
03-26-2013-A
0.260
0.255 SQ
0.250
1.00
TOP VIEW BOTTOM VIEW
END VIEW
SIDE VIEW
0.012 R
TYP
0.175 0.026 MIN
0.195
0.190 SQ
0.185
0.155
0.150
0.145
0.053
0.050
0.047
0.006
0.005
0.004
0.091
0.083
0.075
0.019
0.017
0.015
1
4
8
5
IDEX
MARK
0.054
0.044
0.034
0.05 TYP
0.024
0.007
MIN
0.035
TYP
Figure 25. 8-Lead Ceramic Flat Package [FLATPACK]
(F-8-2)
Dimensions shown in inches
ORDERING GUIDE
Model1 Temperature Range Package Description Package Option
AD8634HRZN −40°C to +175°C 8-Lead Standard Small Outline Package [SOIC_N] R-8
AD8634HFZ −40°C to +210°C 8-Lead Ceramic Flat Package [FLATPACK] F-8-2
1 Z = RoHS Compliant Part.