参数资料
型号: AG003-01E
厂商: NVE Corp/Sensor Products
文件页数: 103/145页
文件大小: 0K
描述: ASSEMBLY CURRENT SENSOR EVAL
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: 板,CD
已用 IC / 零件: AA 系列电流传感器
产品目录页面: 2839 (CN2011-ZH PDF)
相关产品: 391-1054-5-ND - SENSORS MAGNETIC FIELD LP 8-SOIC
391-1052-5-ND - SENSORS MAGNETIC FIELD 8SOIC
391-1050-5-ND - SENSORS MAGNETIC FIELD 8SOIC
391-1049-5-ND - SENSORS MAGNETIC FIELD 8MSOP
391-1048-5-ND - SENSORS MAGNETIC FIELD 8SOIC
391-1045-5-ND - SENSORS MAGNETIC FIELD 8SOIC
391-1032-5-ND - SENSORS MAGNETIC FIELD 8MSOP
391-1030-5-ND - SENSORS MAGNETIC FIELD 8MSOP
AB001-02-ND - SENSORS MAGNETIC FIELD 8SOIC
391-1020-5-ND - SENSORS MAGNETIC FIELD LP 8-SOIC
更多...
其它名称: 391-1060
Application Notes
Instrumentation Amplifier Bridge Preamplifier
The advent of low-cost, high-performance Instrumentation Amplifier (IAs) such as the Analog Devices
AD620 and the Burr Brown INA118 have greatly simplified the design of bridge preamplifiers while
adding significant advantages in noise, size, and performance over op amp implementations. The
figure below shows the design of a bridge amplifier circuit using an INA118 (the Analog Devices
AD620 is pin-for-pin compatible with the INA118).
+5V
C1 0.1uF
+5V
C2 0.1uF
Use for AC
coupling
8 Vin+
5 Vout+
C3
R3
2 IN-
7
C3
RG
3 IN+
1 RG1
8 RG2
U2
INA118/BB
6
Vout
4 Vin-
1 Vout-
R3
5 REF
4
-5 V
Vref
I NSTRUMENTATION A MPLIFIER P REAMPLIFIER C IRCUIT
The gain of this circuit is:
V OUT = ? 1 +
? V IN + V ref
?
?
50K ?
R G ?
with V IN = (V out+ ) - (V out- ) and the frequency 3dB
point is given by f =
1
2 π R 3 C 3
Integrated circuit instrumentation amplifiers utilize circuit techniques where resistor matching is not as
critical to the CMRR as active device matching. Active device matching can be easily controlled on
integrated circuits allowing for greatly improved CMRR of instrumentation amplifiers over op amp
implementations. Also, the gain-bandwidth product of instrumentation amplifier circuits can be higher
than op amp circuits.
- 103 -
www.nve.com phone: 952-829-9217 fax: 952-829-9189
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