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AD629BR-REEL bảng dữ liệu(PDF) 11 Page - Analog Devices

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AD629BR-REEL bảng dữ liệu(HTML) 11 Page - Analog Devices

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REV. A
AD629
–11–
Table IV. AD629 vs. INA117 AC Error Budget Example 2 (VCM =
100 V @ 500 Hz)
Error, ppm of FS
Error Source
AD629
INA117
AD629
INA117
ACCURACY, TA = 25
°C
Initial Gain Error
(0.0005
× 10) ÷ 10 V × 106
(0.0005
× 10) ÷ 10 V × 106
500
500
Offset Voltage
(0.001 V
÷ 10 V) × 106
(0.002 V
÷ 10 V) × 106
100
200
Total Accuracy Error:
600
700
TEMPERATURE DRIFT (85
°C)
Gain
10 ppm/
°C × 60°C
10 ppm/
°C × 60°C
600
600
Offset Voltage
(20
µV/°C × 60°C) × 106/10 V
(40
µV/°C × 60°C) × 106/10 V
120
240
Total Drift Error:
720
840
RESOLUTION
Noise, Typ, 0.01–10 Hz,
µV p-p
15
µV ÷ 10 V × 106
25
µV ÷ 10 V × 106
23
CMR @ 60 Hz
(141
× 10–6 × 1 V) ÷ 10 V × 106
(500
× 10–6 × 1 V) ÷ 10 V × 106
14
50
Nonlinearity
(10
–5
× 10 V) ÷ 10 V × 106
(10
–5
× 10 V) ÷ 10 V × 106
10
10
AC CMR @ 500 Hz
(141
× 10–6 × 200 V) ÷ 10 V × 106 (500 × 10–6 × 200 V) ÷ 10 V × 106
2,820
10,000
Total Resolution Error:
2,846
10,063
Total Error:
4,166
11,603
VOUT
REF(–)
–IN
+IN
–VS
NC
+VS
REF(+)
AD629
21.1k
380k
380k
380k
20k
NC = NO CONNECT
8
7
6
5
1
2
3
4
1
SHUNT
10 AMPS
200VCM DC
TO GROUND
OUTPUT
CURRENT
60Hz
POWER LINE
0.1 F
0.1 F
Figure 37. Error Budget Analysis Example 1. VIN = 10 V
Full-Scale, VCM = 200 V DC. RSHUNT = 1
Ω, 1 V p-p 60 Hz
Power-Line Interference
Error Budget Analysis Example 2
This application is similar to the previous example except that
the sensed load current is from an amplifier with an ac common-
mode component of
±100 V (frequency = 500 Hz) present on
the shunt (Figure 38). All other conditions are the same as
before. Note that the same kind of power line interference can
happen as detailed in Example 1. However, the ac common-
mode component of 200 V p-p coming from the shunt is much
larger than the interference of 1 V p-p, so that this interference
component can be neglected.
VOUT
REF(–)
–IN
+IN
–VS
NC
+VS
REF(+)
AD629
21.1k
380k
380k
380k
20k
NC = NO CONNECT
8
7
6
5
1
2
3
4
1
SHUNT
10 AMPS
100V AC CM
TO GROUND
OUTPUT
CURRENT
60Hz
POWER LINE
0.1 F
0.1 F
Figure 38. Error Budget Analysis Example 2. VIN = 10 V
Full-Scale, VCM =
±100 V at 500 Hz, RSHUNT = 1 Ω


Số phần tương tự - AD629BR-REEL

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Mô tả tương tự - AD629BR-REEL

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