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AD8208WBRMZ датащи(PDF) 3 Page - Analog Devices

номер детали AD8208WBRMZ
подробное описание детали  High Voltage, Precision Difference Amplifier
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производитель  AD [Analog Devices]
домашняя страница  http://www.analog.com
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AD8208WBRMZ датащи(HTML) 3 Page - Analog Devices

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AD8208
Rev. A | Page 3 of 16
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
Test Conditions1
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
μV/°C
INPUT
Input Impedance
Differential
360
400
440
Common Mode
180
200
220
VCM (Continuous)
−2
+45
V
CMRR2
VCM = −2 V to +45 V, dc
80
100
dB
f = dc to 10 kHz,3 TOPR
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
0.05
VS − 0.1
V
Output Resistance
97
100
103
OUTPUT BUFFER (A2)
Gain
2
V/V
Gain Error
0.075 V ≤ VOUT ≤ (VS − 0.1 V), dc, TOPR
−0.3
+0.3
%
Output Voltage Range4
RL = 25 kΩ, differential Input (V) = 0 V, TOPR
0.075
VS − 0.1
V
Input Bias Current
TOPR
50
nA
Output Resistance
RL = 1 kΩ, frequency = dc
2
Ω
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/μs
NOISE
0.1 Hz to 10 Hz
20
μV 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
2.7
mA
PSRR
VS = 4.5 V to 5.5 V, TOPR
66
80
dB
TEMPERATURE RANGE
For Specified Performance at TOPR
−40
+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 F
and
igure 12
Figure 13.


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