BA4510 Просмотр технического описания (PDF) - ROHM Semiconductor

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BA4510

Low Noise Operational Amplifiers

ROHM Semiconductor 

BA4510xxx

Application examples

○Voltage follower

Datasheet

VCC

Vout

Vin

VEE

Figure 31. Voltage follower circuit

Voltage gain is 0 dB.

This circuit controls output voltage (Vout) equal input

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

high input impedance and low output impedance.

Vout is shown next expression.

Vout=Vin

○Inverting amplifier

R1

Vin

R2

VCC

Vout

For inverting amplifier, Vin is amplified by voltage gain

decided R1 and R2, and phase reversed voltage is

output.

Vout is shown next expression.

Vout=-(R2/R1)・Vin

Input impedance is R1.

R1//R2

VEE

Figure 32. Inverting amplifier circuit

○Non-inverting amplifier

R1

R2

VCC

Vin

Vout

For non-inverting amplifier, Vin is amplified by voltage

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

Vout is shown next expression.

Vout=(1 + R2/R1)・Vin

This circuit performs high input impedance because

Input impedance is operational amplifier’s input

Impedance.

VEE

Figure 33. Non-inverting amplifier circuit

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TSZ22111･15･00

15/19

TSZ02201-0RAR1G200080-1-2

7.NOV.2012 Rev.001

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