參數(shù)資料
型號: AD548KN
廠商: Analog Devices Inc
文件頁數(shù): 2/12頁
文件大?。?/td> 0K
描述: IC OPAMP GP 1MHZ LP PREC 8DIP
產品變化通告: Product Discontinuance 27/Oct/2011
標準包裝: 50
放大器類型: 通用
電路數(shù): 1
轉換速率: 1.8 V/µs
增益帶寬積: 1MHz
電流 - 輸入偏壓: 30pA
電壓 - 輸入偏移: 300µV
電流 - 電源: 170µA
電流 - 輸出 / 通道: 15mA
電壓 - 電源,單路/雙路(±): ±4.5 V ~ 18 V
工作溫度: 0°C ~ 70°C
安裝類型: 通孔
封裝/外殼: 8-DIP(0.300",7.62mm)
供應商設備封裝: 8-PDIP
包裝: 管件
AD548
–10–
REV. D
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
= 1V log
10 ( I2 / I1 )
Frequency compensation is provided by R11, R12, C1, and C2.
Small signal bandwidth is approximately 300 kHz at input cur-
rents above 100
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
A and adjust
VOUT to zero by adjusting the potentiometer on A3. Then set I2
to 1
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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相關代理商/技術參數(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:- 標準包裝:2,500 系列:- 放大器類型:通用 電路數(shù):4 輸出類型:- 轉換速率: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) 供應商設備封裝: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