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参数资料
| 型号： | OP213FSZ-REEL |
| 厂商： | ANALOG DEVICES INC |
| 元件分类： | 运算放大器 |
| 英文描述： | Low Noise, Low Drift Single-Supply Operational Amplifiers (Dual); Package: SOIC; No of Pins: 8; Temperature Range: Industrial |
| 中文描述： | DUAL OP-AMP, 325 uV OFFSET-MAX, 3.4 MHz BAND WIDTH, PDSO8 |
| 封装： | ROHS COMPLIANT, MS-012AA, SOIC-8 |
| 文件页数： | 6/24页 |
| 文件大小： | 479K |
| 代理商： | OP213FSZ-REEL |
OP113/OP213/OP413
Rev. F | Page 14 of 24
APPLICATION CIRCUITS
A HIGH PRECISION INDUSTRIAL LOAD-CELL
SCALE AMPLIFIER
The OPx13 family makes an excellent amplifier for
conditioning a load-cell bridge. Its low noise greatly improves
the signal resolution, allowing the load cell to operate with a
smaller output range, thus reducing its nonlinearity. Figure 41
shows one half of the OPx13 family used to generate a very
stable 10 V bridge excitation voltage while the second amplifier
provides a differential gain. R4 should be trimmed for
maximum common-mode rejection.
16
2
13
6
7
11 12
4
14
15
9
1
3
AD588BQ
8
10
3
2
8
1
A2
2N2219A
+10V
+15V
–15V
+10V
6
5
4
7
A1
OUTPUT
010V
FS
–15V
1/2
OP213
+
–
+ 10F
+
–
CMRR TRIM
10-TURN
T.C. LESS THAN 50ppm/°C
350
LOAD
CELL
100mV
F.S.
R5
1k
1/2
OP213
R1
17.2k
0.1%
R2
301
0.1%
R4
500
R3
17.2k
0.1%
00
28
6-
0
40
Figure 41. Precision Load-Cell Scale Amplifier
A LOW VOLTAGE, SINGLE SUPPLY STRAIN GAGE
AMPLIFIER
The true zero swing capability of the OPx13 family allows the
amplifier in Figure 42 to amplify the strain gage bridge
accurately even with no signal input while being powered by a
single 5 V supply. A stable 4 V bridge voltage is made possible
by the rail-to-rail OP295 amplifier, whose output can swing to
within a millivolt of either rail. This high voltage swing greatly
increases the bridge output signal without a corresponding
increase in bridge input.
3
2
8
1
2N2222A
2.5V
1/2
OP295
4
2
4
6
IN
OUT
GND
REF43
4V
5V
1/2
OP213
1
3
2
8
6
5
4
7
R4
100k
R3
20k
R6
27.4
R5
2.1k
R2
20k
R1
100k
1/2
OP295
RG = 2127.4
5V
OUTPUT
0V
3.5V
+
–
+
–
350
35mV
FS
R8
12k
R7
20k
+
–
00
28
6-
0
41
Figure 42. Single Supply Strain Gage Amplifier
A HIGH ACCURACY LINEARIZED RTD
THERMOMETER AMPLIFIER
Zero suppressing the bridge facilitates simple linearization of
the resistor temperature device (RTD) by feeding back a small
amount of the output signal to the RTD. In Figure 43, the left
leg of the bridge is servoed to a virtual ground voltage by
Amplifier A1, and the right leg of the bridge is servoed to 0 V
by Amplifier A2. This eliminates any error resulting from
common-mode voltage change in the amplifier. A 3-wire RTD
is used to balance the wire resistance on both legs of the bridge,
thereby reducing temperature mismatch errors. The 5 V bridge
excitation is derived from the extremely stable AD588 reference
device with 1.5 ppm/°C drift performance.
Linearization of the RTD is done by feeding a fraction of the
output voltage back to the RTD in the form of a current. With
just the right amount of positive feedback, the amplifier output
will be linearly proportional to the temperature of the RTD.
相关PDF资料 |
PDF描述 |
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| OP213FSZ-REEL7 | Low Noise, Low Drift Single-Supply Operational Amplifiers (Dual); Package: SOIC; No of Pins: 8; Temperature Range: Industrial |
| OP413ESZ | Low Noise, Low Drift Single-Supply Operational Amplifier (Quad); Package: SOIC - Wide; No of Pins: 16; Temperature Range: Industrial |
| OP413ESZ-REEL | Low Noise, Low Drift Single-Supply Operational Amplifier (Quad); Package: SOIC - Wide; No of Pins: 16; Temperature Range: Industrial |
| OP413FS-REEL | Low Noise, Low Drift Single-Supply Operational Amplifier (Quad); Package: SOIC - Wide; No of Pins: 16; Temperature Range: Industrial |
| OP413FSZ | Low Noise, Low Drift Single-Supply Operational Amplifier (Quad); Package: SOIC - Wide; No of Pins: 16; Temperature Range: Industrial |
相关代理商/技术参数 |
参数描述 |
|---|---|
| OP213FSZ-REEL7 | 功能描述:IC OPAMP GP 3.4MHZ DUAL LN SOIC RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:1 系列:- 放大器类型:通用 电路数:4 输出类型:满摆幅 转换速率:0.6 V/µs 增益带宽积:1MHz -3db带宽:- 电流 - 输入偏压:2pA 电压 - 输入偏移:1000µV 电流 - 电源:85µA 电流 - 输出 / 通道:20mA 电压 - 电源，单路/双路(±):1.8 V ~ 6 V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:14-SOIC（0.154"，3.90mm 宽） 供应商设备封装:14-SOICN 包装:剪切带 (CT) 产品目录页面:680 (CN2011-ZH PDF) 其它名称:MCP6L04T-E/SLCT |
| OP213GP | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Voltage-Feedback Operational Amplifier |
| OP213GS | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Voltage-Feedback Operational Amplifier |
| OP214 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:TRANSISTOR | BJT | NPN | 16V V(BR)CEO | 150MA I(C) | CHIP |
| OP215 | 制造商:AD 制造商全称:Analog Devices 功能描述:DUAL PRECISION JFET-INPUT OPERATIONAL AMPLIFIER |
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