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AD8278ARZ-R7 数据表(PDF) 5 Page - Analog Devices

部件名 AD8278ARZ-R7
功能描述  Low Power, Wide Supply Range, Low Cost Difference Amplifier, G = 쩍, 2
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

AD8278ARZ-R7 数据表(HTML) 5 Page - Analog Devices

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AD8278
Rev. 0 | Page 5 of 24
VS = +2.7 V to <±5 V, VREF = midsupply, TA = 25°C, RL = 10 kΩ connected to midsupply, G = ½ difference amplifier configuration, unless
otherwise noted.
Table 4.
Parameter
Conditions
G = ½
Unit
Grade B
Grade A
Min
Typ
Max
Min
Typ
Max
INPUT CHARACTERISTICS
System Offset1
75
150
75
250
μV
vs. Temperature
TA = −40°C to +85°C
150
250
μV
Average Temperature
Coefficient
TA = −40°C to +85°C
0.3
1
2
5
μV/°C
vs. Power Supply
VS = ±5 V to ±18 V
2.5
5
μV/V
Common-Mode Rejection
Ratio (RTI)
VS = 2.7 V, VCM = 0 V
to 2.4 V, RS = 0 Ω
80
74
dB
VS = ±5 V, VCM = −10 V
to +7 V, RS = 0 Ω
80
74
dB
Input Voltage Range2
−3(VS + 0.1)
+3(VS − 1.5)
−3(VS + 0.1)
+3(VS − 1.5)
V
Impedance3
Differential
120
120
Common Mode
30
30
DYNAMIC PERFORMANCE
Bandwidth
870
870
kHz
Slew Rate
1.3
1.3
V/μs
Settling Time to 0.01%
2 V step on output,
CL = 100 pF, VS = 2.7 V
7
7
μs
GAIN
Gain Error
0.005
0.02
0.01
0.05
%
Gain Drift
TA = −40°C to +85°C
1
5
ppm/°C
OUTPUT CHARACTERISTICS
Output Swing4
RL = 10 kΩ ,
TA = −40°C to +85°C
−VS + 0.1
+VS − 0.15
−VS + 0.1
+VS − 0.15
V
Short-Circuit Current Limit
±10
±10
mA
Capacitive Load Drive
200
200
pF
NOISE5
Output Voltage Noise
f = 0.1 Hz to 10 Hz
1.4
1.4
μV p-p
f = 1 kHz
47
50
47
50
nV/√Hz
POWER SUPPLY
Supply Current6
TA = −40°C to +85°C
200
200
μA
Operating Voltage Range
2.0
36
2.0
36
V
TEMPERATURE RANGE
Operating Range
−40
+125
−40
+125
°C
1 Includes input bias and offset current errors, RTO (referred to output).
2 The input voltage range may also be limited by absolute maximum input voltage or by the output swing. See the
section in the
section for details.
Input Voltage Range
Theory of Operation
3 Internal resistors are trimmed to be ratio matched and have ±20% absolute accuracy.
4 Output voltage swing varies with supply voltage and temperature. See Figur
through
for details.
e 20
Figure 23
5 Includes amplifier voltage and current noise, as well as noise from internal resistors.
6 Supply current varies with supply voltage and temperature. See Figure
and
for details.
25
Figure 26


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