参数资料
型号: AG920-07
厂商: NVE Corp/Sensor Products
文件页数: 119/145页
文件大小: 0K
描述: KIT EVALUATION GT SENSOR
标准包装: 1
传感器类型: 磁性 GMR(大型磁阻传感)
接口: 模拟
嵌入式:
已供物品: 9 个板,CD,磁体,样品,焊膏
已用 IC / 零件: ABL 和 AKL 系列 GT 传感器
相关产品: 391-1058-5-ND - SENSOR GEAR TOOTH DUAL 8MSOP
391-1057-5-ND - SENSOR GEAR TOOTH DUAL 8MSOP
391-1056-5-ND - SENSOR GEAR TOOTH SINGLE 8MSOP
391-1055-5-ND - SENSOR GEAR TOOTH SINGLE 8MSOP
391-1036-5-ND - SENSOR GEAR TOOTH DUAL 8MSOP
391-1035-5-ND - SENSOR GEAR TOOTH DUAL 8MSOP
391-1034-5-ND - SENSOR GEAR TOOTH SINGLE 8MSOP
391-1033-5-ND - SENSOR GEAR TOOTH SINGLE 8MSOP
其它名称: 391-1022
Application Notes
DATA ANALYSIS- One To Ten Amps
Currents (1-10 A) were run through the 90 and 60-mil traces found on the PCB in NVE’s Current
Sensor Evaluation Kit AG003-01. An AA003-02 sensor was placed over the 90 and 60-mil traces and
different levels of DC current were run through the traces. This current and the corresponding output
from the sensors are shown in the following graphs.
AA003-02 over 0.090" wide,
0.0023" thick trace
450
400
350
300
250
200
150
100
50
0
mV Out = 29.8 ± 0.2A
@8.33V
0
2
4
6
8
10
Current(A)
The sensor was supplied with 8.33V and was hand-soldered over the trace. The trace is 0.090” wide
and 0.0023 ± 0.0002" thick. The marks on the graph are output error bars which cover the expected
error from this part due to intrinsic hysteresis and measurement errors. The current was swept from
zero to ten Amps and back to zero multiple times. The output voltage at specific current levels was
analyzed and an output voltage precision was determined to have a relative error of approximately
±0.7% with errors of up to 2% possible at low currents.
A linear fit on the data above shows a 29.8 ± 0.2 mV/A correlation in this configuration. The sensor
utilizes a Wheatstone bridge and thus the applied voltage across the bridge is directly related to the
output. By dividing the slope by 8.33V, we get a more useful number of 3.57 ± 0.02 mV/V/A. With
this number, the user can determine the expected output for any applied voltage.
- 119 -
www.nve.com phone: 952-829-9217 fax: 952-829-9189
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