AD628
TA = 25°C, VS = 5 V, RL = 2 kΩ, REXT1 = 10 kΩ, REXT2 = ∞, VREF = 2.5, unless otherwise noted.
Table 2.
AD61ꢁAR
Typ
AD61ꢁARM
Typ Max Unit
Parameter
Conditions
Min
Max Min
DIFFERENTIAL AND OUTPUT AMPLIFIER
Gain Equation
Gain Range
G = +0.1(1+ REXT1/REXT2
See Figure 29
)
V/V
V/V
0.11
100
0.11
100
Offset Voltage
VCM = 2.25 V; RTI of input pins2;
output amplifier G = +1
−3.0
+3.0 −3.0
+3.0 mV
vs. Temperature
CMRR3
6
15
75
75
70
4
6
15
μV/°C
dB
dB
dB
(μV/V)/°C
dB
RTI of input pins; G = +0.1 to +100 75
500 Hz
75
70
Minimum CMRR Over Temperature −40°C to +85°C
vs. Temperature
PSRR (RTI)
1
94
1
94
4
VS = 4.5 V to 10 V
77
77
Input Voltage Range
Common Mode4
Differential
−12
−15
+17
+15
−12
−15
+17
+15
V
V
Dynamic Response
Small Signal Bandwidth – 3 dB
Full Power Bandwidth
Settling Time
G = +0.1
440
30
15
440
30
15
kHz
kHz
μs
G = +0.1; to 0.01%, 30 V step
Slew Rate
0.3
0.3
V/μs
Noise (RTI)
Spectral Density
1 kHz
0.1 Hz to 10 Hz
350
15
350
15
nV/√Hz
μV p-p
DIFFERENTIAL AMPLIFIER
Gain
0.1
0.1
V/V
%
ppm
ppm
Error
–0.1
−2.5
+0.01 +0.1 –0.1
3
3
+0.01 +0.1
3
3
Nonlinearity
vs. Temperature
Offset Voltage
vs. Temperature
Input Impedance
Differential
10
10
RTI of input pins
+2.5 −2.5
10
+2.5 mV
10
μV/°C
220
55
220
55
kΩ
kΩ
dB
Common Mode
CMRR5
RTI of input pins; G = +0.1 to +100 75
75
500 Hz
75
70
75
70
dB
dB
Minimum CMRR Over Temperature −40°C to +85°C
vs. Temperature
Output Resistance
Error
1
10
4
1
10
4
(μV/V)/°C
kΩ
%
−0.1
+0.1 −0.1
+0.1
OUTPUT AMPLIFIER
Gain Equation
G = (1 + REXT1/REXT2
)
V/V
Nonlinearity
G = +1, VOUT = 1 V to 4 V
RTI of output amplifier
0.5
0.5
0.15 mV
0.6
4.1
4
ppm
Output Offset Voltage
vs. Temperature
Output Voltage Swing
−0.15
0.15 −0.15
0.6
4.1
4
μV/°C
V
V
RL = 10 kΩ
RL = 2 kΩ
0.9
1
0.9
1
Bias Current
Offset Current
CMRR
1.5
0.2
3
0.5
1.5
0.2
3
0.5
nA
nA
dB
dB
VCM = 1 V to 4 V
VOUT = 1 V to 4 V
130
130
130
130
Open-Loop Gain
Rev. F | Page 5 of 20
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