BA4510FVM 查看數據表（PDF） - ROHM Semiconductor

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BA4510FVM

Low Noise Operational Amplifiers

ROHM Semiconductor 

BA4558F,BA4558R F/FV/FVM,BA4560F,BA4560RF/FV/FVM,BA4564RFVBA4580RF/FVM,BA4584FV,

BA4584RF/FV,BA8522RF/FV/FVM,BA15218F,BA14741F,BA15532F,BA4510F/FV,BA2115F/FVM

Technical Note

○Voltage follower

VDD

Vout

Vin

VSS

Fig. 323 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 formula.

Vout=Vin

○Inverting amplifier

R1

Vin

R2

VDD

R1//R2

VSS

Vout

For inverting amplifier, Vi(b) Derating curve

voltage gain decided R1 and R2, and phase reversed

voltage is outputted.

Vout is shown next formula.

Vout=-(R2/R1)・Vin

Input impedance is R1.

Fig. 324 Inverting amplifier circuit

○Non-inverting amplifier

R1

R2

VDD

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 formula.

Vout=(1 + R2/R1)・Vin

This circuit realizes high input impedance because

Input impedance is operational amplifier’s input

Impedance.

VSS

Fig. 325 Non-inverting amplifier circuit

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2011.08 - Rev.B

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