AD8208(RevA) 查看數據表（PDF） - Analog Devices
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AD8208 Datasheet PDF : 16 Pages
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AD8208
SPECIFICATIONS
TOPR = −40°C to +125°C, TA = 25°C, VS = 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
SYSTEM GAIN
Initial
Error vs. Temperature
Gain Drift
VOLTAGE OFFSET
Initial Input Offset (Referred to Input [RTI])
Input Offset (RTI) Over Temperature
Voltage Offset vs. Temperature
INPUT
Input Impedance
Differential
Common Mode
VCM (Continuous)
CMRR2
PREAMPLIFIER (A1)
Gain
Gain Error
Output Voltage Range
Output Resistance
OUTPUT BUFFER (A2)
Gain
Gain Error
Output Voltage Range4
Input Bias Current
Output Resistance
DYNAMIC RESPONSE
System Bandwidth
Slew Rate
NOISE
0.1 Hz to 10 Hz
Spectral Density, 1 kHz (RTI)
POWER SUPPLY
Operating Range
Quiescent Current
Quiescent Current vs. Temperature
PSRR
TEMPERATURE RANGE
Test Conditions1
0.075 V ≤ VOUT ≤ (VS − 0.1 V), dc, TOPR
TOPR
VCM = 0.15 V, TA
VCM = 0 V, TOPR
VCM = 0 V, TOPR
VCM = −2 V to +45 V, dc
f = dc to 10 kHz,3 TOPR
0.05 V ≤ VOUT ≤ (VS − 0.1 V), dc, TOPR
0.075 V ≤ VOUT ≤ (VS − 0.1 V), dc, TOPR
RL = 25 kΩ, differential Input (V) = 0 V, TOPR
TOPR
RL = 1 kΩ, frequency = dc
VIN = 0.01 V p-p, VOUT = 0.14 V p-p
VIN = 0.28 V, VOUT = 4 V step
Typical, TA
VOUT = 0.1 V dc, VS = 5 V, TOPR
VS = 4.5 V to 5.5 V, TOPR
For Specified Performance at TOPR
Min
Typ
Max
20
±0.3
0
−20
±2
±4
−20
+20
Unit
V/V
%
ppm/°C
mV
mV
μV/°C
360
400
180
200
−2
80
100
80
10
−0.3
0.05
97
100
2
−0.3
0.075
2
70
1
20
500
4.5
1.6
66
80
−40
440
kΩ
220
kΩ
+45
V
dB
dB
V/V
+0.3
%
VS − 0.1 V
103
kΩ
V/V
+0.3
%
VS − 0.1 V
50
nA
Ω
kHz
V/μs
μV p-p
nV/√Hz
5.5
V
mA
2.7
mA
dB
+125
°C
1 VCM = input common-mode voltage.
2 Source imbalance < 2 Ω.
3 The AD8208 preamplifier exceeds 80 dB CMRR at 10 kHz. However, because the output is available only by way of the 100 kΩ resistor, even a small amount of pin-to-
pin capacitance between the IN pins and the A1 and A2 pins might couple an input common-mode signal larger than the greatly attenuated preamplifier output. The
effect of pin-to-pin coupling can be negated in all applications by using a filter capacitor from Pin 3 to GND.
4 The output voltage range of the AD8208 varies depending on the load resistance and temperature. For additional information on this specification, see Figure 12 and
Figure 13.
Rev. A | Page 3 of 16
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