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參數資料
| 型號： | AD8542ARZ-REEL7 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 運動控制電子 |
| 英文描述： | General-Purpose CMOS Rail-to-Rail Amplifiers |
| 中文描述： | DUAL OP-AMP, 7000 uV OFFSET-MAX, 0.98 MHz BAND WIDTH, PDSO8 |
| 封裝： | LEAD FREE, MS-012AA, SOIC-8 |
| 文件頁數： | 14/20頁 |
| 文件大小： | 305K |
| 代理商： | AD8542ARZ-REEL7 |
AD8541/AD8542/AD8544
PHOTODIODE APPLICATION
The AD854x family has very high impedance with an input bias
current typically around 4 pA. This characteristic allows the
AD854x op amps to be used in photodiode applications and
other applications that require high input impedance. Note that
the AD854x has significant voltage offset that can be removed
by capacitive coupling or software calibration.
Figure 39 illustrates a photodiode or current measurement
application. The feedback resistor is limited to 10 MΩ to avoid
excessive output offset. Also, note that a resistor is not needed
on the noninverting input to cancel bias current offset because
the bias current-related output offset is not significant when
compared to the voltage offset contribution. For best
performance, follow the standard high impedance layout
techniques, which include:
Shielding the circuit.
Cleaning the circuit board.
Putting a trace connected to the noninverting input around
the inverting input.
Using separate analog and digital power supplies.
Rev. E | Page 14 of 20
AD8541
4
6
7
3
2
D
OR
V+
2.5V
REF
C
100pF
R
10M
2.5V
REF
V
OUT
0
Figure 39. High Input Impedance Application—Photodiode Amplifier
相關PDF資料 |
PDF描述 |
|---|---|
| AD8544AR-REEL | General-Purpose CMOS Rail-to-Rail Amplifiers |
| AD8544AR-REEL7 | General-Purpose CMOS Rail-to-Rail Amplifiers |
| AD8544ARU-REEL | General-Purpose CMOS Rail-to-Rail Amplifiers |
| AD8544ARUZ | General-Purpose CMOS Rail-to-Rail Amplifiers |
| AD8544ARUZ-REEL | General-Purpose CMOS Rail-to-Rail Amplifiers |
相關代理商/技術參數 |
參數描述 |
|---|---|
| AD8544 | 制造商:AD 制造商全稱:Analog Devices 功能描述:General-Purpose CMOS Rail-to-Rail Amplifiers |
| AD8544AR | 制造商:Analog Devices 功能描述:OP Amp Quad GP R-R I/O 5.5V 14-Pin SOIC N 制造商:Analog Devices 功能描述:2.5V to 6V 4 1MHz IyAv 14SOIC Bulk 制造商:Analog Devices 功能描述:AMP QUAD LOW POWER RRI/O SMD 8544 |
| AD8544AR-REEL | 制造商:Analog Devices 功能描述:OP Amp Quad GP R-R I/O 5.5V 14-Pin SOIC N T/R |
| AD8544AR-REEL7 | 制造商:Analog Devices 功能描述:OP Amp Quad GP R-R I/O 5.5V 14-Pin SOIC N T/R 制造商:Analog Devices 功能描述:IC OP-AMP QUAD R/R |
| AD8544ARU | 制造商:Analog Devices 功能描述:OP Amp Quad GP R-R I/O 5.5V 14-Pin TSSOP 制造商:Analog Devices 功能描述:IC OP-AMP QUAD R/R |
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