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AD8420ARMZ-R7 数据表(PDF) 6 Page - Analog Devices

部件名 AD8420ARMZ-R7
功能描述  Wide Supply Range, Micropower, Rail-to-Rail Instrumentation Amplifier
PDF  27 Pages
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

AD8420ARMZ-R7 数据表(HTML) 6 Page - Analog Devices

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Data Sheet
AD8420
Rev. A | Page 5 of 26
+VS = +15 V, −VS = −15 V, VREF = 0 V, TA = 25°C, G = 1 to 1000, RL = 20 kΩ, specifications referred to input, unless otherwise noted.
Table 3.
Parameter
Test Conditions/Comments
Min
Typ
Max
Unit
COMMON-MODE REJECTION RATIO (CMRR)
VCM = −10 V to +10 V
CMRR DC to 60 Hz
92
dB
CMRR at 1 kHz
92
dB
NOISE
Voltage Noise
Spectral Density
f = 1 kHz, VDIFF ≤ 100 mV
55
nV/√Hz
Peak to Peak
f = 0.1 Hz to 10 Hz, VDIFF ≤ 100 mV
1.5
μV p-p
Current Noise
Spectral Density
f = 1 kHz
80
fA/√Hz
Peak to Peak
f = 0.1 Hz to 10 Hz
3
pA p-p
VOLTAGE OFFSET
Offset
VS = ±15 V1
250
μV
Average Temperature Coefficient
TA = −40°C to +85°C
1
μV/°C
Offset RTI vs. Supply (PSR)
VS = ±15 V
100
dB
INPUTS
Valid for REF and FB pair, as well
as +IN and −IN
Input Bias Current2
TA = +25°C
20
27
nA
TA = +85°C
24
nA
TA = −40°C
30
nA
Average Temperature Coefficient
TA = −40°C to +85°C
30
pA/°C
Input Offset Current
TA = +25°C
1
nA
TA = +85°C
1
nA
TA = −40°C
1
nA
Average Temperature Coefficient
TA = −40°C to +85°C
0.5
pA/°C
Input Impedance
Differential
130||3
MΩ||pF
Common Mode
1000||3
MΩ||pF
Differential Input Operating Voltage
TA = −40°C to +85°C
−1
1
V
Input Operating Voltage (+IN, −IN, REF, or FB)
TA = +25°C
−VS − 0.15
+VS − 2.2
V
TA = +85°C
−VS − 0.05
+VS − 1.8
V
TA = −40°C
−VS − 0.2
+VS − 2.7
V
DYNAMIC RESPONSE
Small Signal −3 dB Bandwidth
G = 1
250
kHz
G = 10
25
kHz
G = 100
2.5
kHz
G =1000
0.25
kHz
Settling Time 0.01%
G = 1
−1 V to +1 V output step
3
μs
G = 10
−5 V to +5 V output step
130
μs
G = 100
−5 V to +5 V output step
1
ms
Slew Rate
1
V/μs
GAIN3
G = 1 + (R2/R1)
Gain Range
1
1000
V/V
Gain Error
G = 1
VOUT = ±1 V
0.02
%
G = 10 to 1000
VOUT = ±10 V
0.05
0.1
%
Gain vs. Temperature
TA = −40°C to +85°C
10
ppm/°C



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