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參數(shù)資料
| 型號： | AD548KN |
| 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, 700 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?。?/td> | 430K |
| 代理商： | AD548KN |
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.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AD548KR | Precision, Low Power BiFET Op Amp |
| AD548S | Precision, Low Power BiFET Op Amp |
| AD548JCHIPS | Precision, Low Power BiFET Op Amp |
| AD549* | Ultralow Input Bias Current Operational Amplifier |
| AD549JCHIPS | THERMISTOR, PTC; Series:B598; Thermistor type:PTC; Resistance:10R; Tolerance, resistance:+/-25%; Temp, op. max:125(degree C); Voltage, operating:160V; Case style:Radial; Current, tripping:0.5A; Diameter, body:13.5mm; Length, RoHS Compliant: Yes |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD548KN/+ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Operational Amplifier |
| AD548KNZ | 功能描述:IC OPAMP GP 1MHZ LP PREC 8DIP RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 放大器類型:通用 電路數(shù):4 輸出類型:- 轉(zhuǎn)換速率:0.6 V/µs 增益帶寬積:1MHz -3db帶寬:- 電流 - 輸入偏壓:45nA 電壓 - 輸入偏移:2000µV 電流 - 電源:1.4mA 電流 - 輸出 / 通道:40mA 電壓 - 電源，單路/雙路(±):3 V ~ 32 V，±1.5 V ~ 16 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:14-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:14-TSSOP 包裝:帶卷 (TR) 其它名稱:LM324ADTBR2G-NDLM324ADTBR2GOSTR |
| AD548KNZ | 制造商:Analog Devices 功能描述:Operational Amplifier (Op-Amp) IC 制造商:Analog Devices 功能描述:IC, OP-AMP, 1MHZ, 1.8V/ us, DIP-8 |
| AD548KR | 制造商:Rochester Electronics LLC 功能描述:LOW POWER BIFET OP AMP IC - Bulk |
| AD548KR-REEL | 制造商:AD 制造商全稱:Analog Devices 功能描述:Precision, Low Power BiFET Op Amp |
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