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參數(shù)資料
| 型號： | AD548JN |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 運動控制電子 |
| 英文描述： | Precision, Low Power BiFET Op Amp |
| 中文描述： | OP-AMP, 3000 uV OFFSET-MAX, 1 MHz BAND WIDTH, PDIP8 |
| 封裝： | MINI, PLASTIC, DIP-8 |
| 文件頁數(shù)： | 10/12頁 |
| 文件大小： | 430K |
| 代理商： | AD548JN |
AD548
–10–
REV. C
Figure 10. Log Ratio Amplifier
compensation is provided by resistors R8 and R15 that have a
positive 3500 ppm/
°
C temperature coefficient. The transfer
function for the output voltage is:
V
OUT
=
1
V
log
10
(
I
2
/
I
1
)
Frequency compensation is provided by R11, R12, C1, and C2.
Small signal bandwidth is approximately 300 kHz at input cur-
rents above 100
μ
A and will proportionally decrease with lower
signal levels. D1, D2, R13, and R14 compensate for the effects
of the two logging transistors
’
ohmic emitter resistance.
To trim this circuit, set the two input currents to 10
μ
A and adjust
V
OUT
to zero by adjusting the potentiometer on A3. Then set I
2
to 1
μ
A and adjust the scale factor such that the output voltage is
1 V by trimming potentiometer R10. Offset adjustment for A1 and
A2 is provided to increase the accuracy of the voltage inputs.
This circuit ensures a 1% log conformance error over an input
current range of 300 pA to 1 mA, with low level accuracy
limited by the AD548
’
s input current. The low level input voltage
accuracy of this circuit is limited by the input offset voltage and
drift of the AD548.
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| AD548JR | Precision, Low Power BiFET Op Amp |
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| AD548JR | 制造商:Rochester Electronics LLC 功能描述:LOW POWER BIFET OP AMP IC - Bulk 制造商:Analog Devices 功能描述:IC OP-AMP BIFET PRECISION |
| AD548JR-REEL | 制造商:AD 制造商全稱:Analog Devices 功能描述:Precision, Low Power BiFET Op Amp |
| AD548JR-REEL7 | 制造商:Analog Devices 功能描述:OP Amp Single GP 制造商:Rochester Electronics LLC 功能描述:LOW POWER BIFET OP AMP IC - Tape and Reel |
| AD548JRZ | 功能描述:IC OPAMP GP 1MHZ LP PREC 8SOIC RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 產(chǎn)品培訓模塊:Differential Circuit Design Techniques for Communication Applications 標準包裝:1 系列:- 放大器類型:RF/IF 差分 電路數(shù):1 輸出類型:差分 轉(zhuǎn)換速率:9800 V/µs 增益帶寬積:- -3db帶寬:2.9GHz 電流 - 輸入偏壓:3µA 電壓 - 輸入偏移:- 電流 - 電源:40mA 電流 - 輸出 / 通道:- 電壓 - 電源，單路/雙路(±):3 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-VQFN 裸露焊盤，CSP 供應商設備封裝:16-LFCSP-VQ 包裝:剪切帶 (CT) 產(chǎn)品目錄頁面:551 (CN2011-ZH PDF) 其它名稱:ADL5561ACPZ-R7CT |
| AD548JRZ | 制造商:Analog Devices 功能描述:IC NUMBER OF AMPLIFIERS:1 ((NS)) |
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