參數(shù)資料
型號(hào): AD629ARZ-R7
廠商: Analog Devices Inc
文件頁(yè)數(shù): 6/16頁(yè)
文件大?。?/td> 0K
描述: IC AMP DIFF 25MA LDRIFT 8SOIC
設(shè)計(jì)資源: Measuring -48 V High-Side Current Using AD629, AD8603, AD780, and AD7453 (CN0100)
標(biāo)準(zhǔn)包裝: 1,000
放大器類型: 差分
電路數(shù): 1
轉(zhuǎn)換速率: 2.1 V/µs
-3db帶寬: 500kHz
電壓 - 輸入偏移: 200µV
電流 - 電源: 900µA
電流 - 輸出 / 通道: 25mA
電壓 - 電源,單路/雙路(±): 5 V ~ 36 V,±2.5 V ~ 18 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 8-SOIC(0.154",3.90mm 寬)
供應(yīng)商設(shè)備封裝: 8-SO
包裝: 帶卷 (TR)
AD629
Rev. C | Page 14 of 16
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 (see Figure 41). 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;
therefore, this interference component can be neglected.
REF (–)
OUTPUT
CURRENT
60Hz
POWER LINE
1
SHUNT
REF (+)
–VS
+VS
VOUT
NC
–IN
+IN
0.1F
NC = NO CONNECT
21.1k
380k
20k
380k
AD629
1
2
3
4
8
7
6
5
007
83-
0
39
10 AMPS
±100V AC CM
TO GROUND
Figure 41. Error Budget Analysis Example 2: VIN = 10 V Full-Scale,
VCM = ±100 V at 500 Hz, RSHUNT =1 Ω
Table 8. 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
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
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, Typical, 0.01 Hz to 10 Hz, μV p-p
15 μV/10 V × 106
25 μV/10 V × 106
2
3
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
AC CMR @ 500 Hz
(141 × 10-6 × 200 V)/10 V × 106
(500 × 10-6 × 200 V)/10 V × 106
2820
10,000
Total Resolution Error
2846
10,063
Total Error
4166
11,603
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