BA14741FJ 查看數據表（PDF） - ROHM Semiconductor

零件编号

产品描述 (功能)

比赛名单

BA14741FJ

Low Noise Operational Amplifiers

ROHM Semiconductor 

BA14741xx

Application examples

○Voltage follower

Datasheet

VCC

OUT

Vin

VEE

Figure 30. Voltage follower circuit

Voltage gain is 0 dB.

This circuit controls output voltage (OUT) equal input

voltage (Vin), and keeps OUT with stable because of

high input impedance and low output impedance.

OUT is shown next formula.

OUT=Vin

○Inverting amplifier

R1

Vin

R2

VCC

R1//R2

VEE

OUT

For inverting amplifier, Vin is amplified by voltage gain

decided R1 and R2, and phase reversed voltage is

outputted.

OUT is shown next formula.

OUT=-(R2/R1)・Vin

Input impedance is R1.

Figure 31. Inverting amplifier circuit

○Non-inverting amplifier

R1

R2

VCC

Vin

OUT

For non-inverting amplifier, Vin is amplified by voltage

gain decided R1 and R2, and phase is same with Vin.

OUT is shown next formula.

OUT=(1 + R2/R1)・Vin

This circuit realizes high input impedance because

Input impedance is operational amplifier’s input

Impedance.

VEE

Figure 32. Non-inverting amplifier

circuit

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TSZ02201-0RAR1G200060-1-2

9.NOV.2012 Rev.001

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