AD628
T
A
= 25°C, V
S
= 5 V, R
L
= 2 kΩ, R
EXT1
= 10 kΩ, R
EXT2
= ∞, V
REF
= 2.5 V, unless otherwise noted.
Table 2.
Parameter
DIFFERENTIAL AND OUTPUT AMPLIFIER
Gain Equation
Gain Range
Offset Voltage
vs. Temperature
CMRR
Minimum CMRR Over Temperature
vs. Temperature
PSRR (RTI)
Input Voltage Range
Common Mode
Differential
Dynamic Response
Small Signal Bandwidth – 3 dB
Full Power Bandwidth
Settling Time
Slew Rate
Noise (RTI)
Spectral Density
DIFFERENTIAL AMPLIFIER
Gain
Error
Nonlinearity
vs. Temperature
Offset Voltage
vs. Temperature
Input Impedance
Differential
Common Mode
CMRR
Minimum CMRR Over Temperature
vs. Temperature
Output Resistance
Error
OUTPUT AMPLIFIER
Gain Equation
Nonlinearity
Output Offset Voltage
vs. Temperature
Output Voltage Swing
Bias Current
Offset Current
CMRR
Open-Loop Gain
Conditions
G = +0.1(1+ R
EXT1
/R
EXT2
)
See Figure 29
V
CM
= 2.25 V; RTI of input pins
;
output amplifier G = +1
RTI of input pins; G = +0.1 to +100
500 Hz
−40°C to +85°C
V
S
= 4.5 V to 10 V
AD628AR
Min
Typ
Max
AD628ARM
Min
Typ
Max
Unit
V/V
V/V
mV
μV/°C
dB
dB
dB
(μV/V)/°C
dB
V
V
kHz
kHz
μs
V/μs
nV/√Hz
μV p-p
V/V
%
ppm
ppm
mV
μV/°C
kΩ
kΩ
dB
dB
dB
(μV/V)/°C
kΩ
%
V/V
ppm
mV
μV/°C
V
V
nA
nA
dB
dB
0.1
−3.0
6
75
75
70
77
−12
−15
1
94
100
+3.0
15
0.1
−3.0
6
75
75
70
100
+3.0
15
4
77
+17
+15
−12
−15
1
94
4
+17
+15
440
30
15
0.3
350
15
0.1
+0.01
3
G = +0.1
G = +0.1; to 0.01%, 30 V step
440
30
15
0.3
350
15
0.1
+0.01
3
1 kHz
0.1 Hz to 10 Hz
–0.1
RTI of input pins
−2.5
+0.1
3
10
+2.5
10
–0.1
−2.5
+0.1
3
10
+2.5
10
220
55
RTI of input pins; G = +0.1 to +100
500 Hz
−40°C to +85°C
75
75
70
1
10
−0.1
G = (1 + R
EXT1
/R
EXT2
)
G = +1, V
OUT
= 1 V to 4 V
RTI of output amplifier
R
L
= 10 kΩ
R
L
= 2 kΩ
4
+0.1
−0.1
75
75
70
220
55
1
10
4
+0.1
−0.15
0.9
1
1.5
0.2
0.5
+0.15
0.6
4.1
4
3
0.5
−0.15
0.9
1
1.5
0.2
130
130
0.5
+0.15
0.6
4.1
4
3
0.5
V
CM
= 1 V to 4 V
V
OUT
= 1 V to 4 V
Rev. G | Page 5 of 20
130
130
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