Data Sheet
AD8208
Rev. C | Page 3 of 20
SPECIFICATIONS
5 V, RL = 25 kΩ (RL is the output load resistor), unless otherwise noted. Specifications applicable for both packages (SOIC and MSOP).
Table 1.
Parameter
Min
Typ
Max
Unit
SYSTEM GAIN
Initial
20
V/V
Error vs. Temperature
0.075 V ≤ VOUT ≤ (VS 0.1 V), dc, TOPR
±0.3
%
Gain Drift
TOPR
0
20
ppm/°C
VOLTAGE OFFSET
Initial Input Offset (Referred to Input [RTI])
VCM = 0.15 V, TA
±2
mV
Input Offset (RTI) Over Temperature
VCM = 0 V, TOPR
±4
mV
Voltage Offset vs. Temperature
VCM = 0 V, TOPR
20
+20
V/°C
INPUT
Input Impedance
Differential
360
400
440
k
Common Mode
180
200
220
k
VCM (Continuous)
2
+45
V
VCM = 2 V to +45 V, dc
80
100
dB
80
dB
PREAMPLIFIER (A1)
Gain
10
V/V
Gain Error
0.05 V ≤ VOUT ≤ (VS 0.1 V), dc, TOPR
0.3
+0.3
%
Output Voltage Range
AD8208WBR, AD8208WBRM
0.0375
VS 0.1
V
AD8208WHR, AD8208WHRM
0.05
VS 0.1
V
Output Resistance
97
100
103
k
OUTPUT BUFFER (A2)
Gain
2
V/V
Gain Error
0.075 V ≤ VOUT ≤ (VS 0.1 V), dc, TOPR
0.3
+0.3
%
RL = 25 k, differential Input (V) = 0 V, TOPR
Pin 3 (A1 output) driving Pin 4 (A2 input)
AD8208WBR, AD8208WBRM
0.075
VS 0.1
V
AD8208WHR, AD8208WHRM
0.1
VS 0.12
V
Pin 4 (A2 input) driven with external source
AD8208WBR, AD8208WBRM
0.075
VS 0.1
V
AD8208WHR, AD8208WHRM
0.1
VS 0.12
V
Input Bias Current
TOPR
50
nA
Output Resistance
RL = 1 k, frequency = dc
2
DYNAMIC RESPONSE
System Bandwidth
VIN = 0.01 V p-p, VOUT = 0.14 V p-p
70
kHz
Slew Rate
VIN = 0.28 V, VOUT = 4 V step
1
V/s
NOISE
0.1 Hz to 10 Hz
20
V p-p
Spectral Density, 1 kHz (RTI)
500
nV/√Hz
POWER SUPPLY
Operating Range
4.5
5.5
V
Quiescent Current
Typical, TA
1.6
mA
Quiescent Current vs. Temperature
VOUT = 0.1 V dc, VS = 5 V, TOPR
AD8208WBR, AD8208WBRM
2.7
mA
AD8208WHR, AD8208WHRM
3.0
mA
PSRR
VS = 4.5 V to 5.5 V, TOPR
66
80
dB