HA17902FPJ Просмотр технического описания (PDF) - Renesas Electronics

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HA17902FPJ

Quad Operational Amplifier

Renesas Electronics 

HA17902 Series

HA17902 Application Examples

The HA17902 is a quad operational amplifier, and consists of four operational amplifier circuits and one bias current

circuit. It features single-voltage power supply operation, internal phase compensation, a wide zero-cross bandwidth, a

low input bias current, and a high open-loop gain. Thus the HA17902 can be used in a wide range of applications. This

section describes several applications using the HA17902.

1. Noninverting Amplifier

Figure 1 shows the circuit diagram for a noninverting amplifier. The voltage gain of this amplifier is given by the

following formula.

Vout = 1 + R2

Vin

R1

+Vin

10k

+

–

R2

1M

10k R1

Vout

Figure 1 Noninverting Amplifier

2. Summing Amplifier

Since the circuit shown in figure 2 applies +V1 and +V2 to the noninverting input and +V3 and +V4 to the inverting

input, the total output will be Vout = V1 + V2 – V3 – V4.

R

100k

+V1

VCC

R

Vin(+) +

+V2

100k

100k

HA17902

–

R

100k

+V3

R

+V4

100k

Vin(–)

R

100 k

Vout

Figure 2 Summing Amplifier

Rev.1.00 Jun 15, 2005 page 8 of 10

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