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AD8270 数据表(PDF) 4 Page - Analog Devices

部件名 AD8270
功能描述  Precision Dual-Channel, Difference Amplifier
PDF  20 Pages
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

AD8270 数据表(HTML) 4 Page - Analog Devices

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AD8270
Rev. 0 | Page 4 of 20
VS = ±5 V, VREF = 0 V, TA = 25°C, RLOAD = 2 kΩ, specifications referred to input, unless otherwise noted.
Table 3.
G = 0.5
G = 1
G = 2
Parameter
Conditions
Min
Typ
Max
Min
Typ
Max
Min
Typ
Max
Unit
DYNAMIC PERFORMANCE
Bandwidth
20
15
10
MHz
Slew Rate
30
30
30
V/μs
Settling Time to 0.01%
5 V step on output
550
650
550
650
550
650
ns
Settling Time to 0.001%
5 V step on output
600
750
600
750
600
750
ns
NOISE/DISTORTION
Harmonic Distortion
f = 1 kHz, VOUT = 5 V p-p,
RLOAD = 600 Ω
101
141
112
dB
Voltage Noise1
f = 0.1 Hz to 10 Hz
2
1.5
1
μV p-p
f = 1 kHz
52
38
26
nV/√Hz
GAIN
Gain Error
0.08
0.08
0.08
%
Gain Drift
TA = −40°C to +85°C
1
10
1
10
1
10
ppm/°C
INPUT CHARACTERISTICS
Offset2
450
1500
300
1000
225
750
μV
Average Temperature Drift
TA = −40°C to +85°C
3
2
1.5
μV/°C
Common-Mode Rejection Ratio
DC to 1 kHz
70
86
76
92
80
98
dB
Power Supply Rejection Ratio
2
10
2
10
2
10
dB
Input Voltage Range3
−5.4
+5.4
−5.4
+5.4
−5.4
+5.4
V
Common-Mode Resistance4
7.5
10
7.5
kΩ
Bias Current
500
500
500
nA
OUTPUT CHARACTERISTICS
Output Swing
−4
+4
−4
+4
−4
+4
V
TA = −40°C to +85°C
−3.9
+3.9
−3.9
+3.9
−3.9
+3.9
V
Short-Circuit Current Limit
Sourcing
100
100
100
mA
Sinking
60
60
60
mA
POWER SUPPLY
Supply Current (per Amplifier)
2.3
2.5
2.3
2.5
2.3
2.5
mA
TA = −40°C to +85°C
3
3
3
mA
1 Includes amplifier voltage and current noise, as well as noise of internal resistors.
2 Includes input bias and offset errors.
3 At voltages beyond the rails, internal ESD diodes begin to turn on. In some configurations, the input voltage range may be limited by the internal op amp (see the
Input Voltage Range section for details).
4 Internal resistors are trimmed to be ratio matched but have ±20% absolute accuracy. Common
-mode resistance was calculated with both inputs in parallel. Common-
mode impedance at only one input is 2× the resistance listed.



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