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參數(shù)資料
| 型號： | OP213FSZ-REEL |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 運算放大器 |
| 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 |
| 封裝： | ROHS COMPLIANT, MS-012AA, SOIC-8 |
| 文件頁數(shù)： | 6/24頁 |
| 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.
相關(guān)PDF資料 |
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 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| OP213FSZ-REEL7 | 功能描述:IC OPAMP GP 3.4MHZ DUAL LN SOIC RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標準包裝:1 系列:- 放大器類型:通用 電路數(shù):4 輸出類型:滿擺幅 轉(zhuǎn)換速率:0.6 V/µs 增益帶寬積:1MHz -3db帶寬:- 電流 - 輸入偏壓:2pA 電壓 - 輸入偏移:1000µV 電流 - 電源:85µA 電流 - 輸出 / 通道:20mA 電壓 - 電源，單路/雙路(±):1.8 V ~ 6 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:14-SOIC（0.154"，3.90mm 寬） 供應商設(shè)備封裝:14-SOICN 包裝:剪切帶 (CT) 產(chǎn)品目錄頁面:680 (CN2011-ZH PDF) 其它名稱:MCP6L04T-E/SLCT |
| OP213GP | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Voltage-Feedback Operational Amplifier |
| OP213GS | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Voltage-Feedback Operational Amplifier |
| OP214 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:TRANSISTOR | BJT | NPN | 16V V(BR)CEO | 150MA I(C) | CHIP |
| OP215 | 制造商:AD 制造商全稱:Analog Devices 功能描述:DUAL PRECISION JFET-INPUT OPERATIONAL AMPLIFIER |
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