UA1029

LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

5

www.unisonic.com.tw

QW-R107-033.B

APPLICATION INFORMATION

1. Adjustment of voltage gain

over in use is recommended.

Sine oscillation is probable as a result of feedback in crease.

+

-

45Ω

30kΩ

AMP

+

47μF

R1

OUTPUT

R2

INPUT

10/11

2/4

Fig.1

9/12

2. Input stage

The input circuit of this IC is as shown as below.

However, at Pin 10 and Pin 11 max 60 mV offset voltage is produced.

Fig.2 illustrate the input circuit of UTC UA1029. A offset voltage of 60mV max is possible. TR1 is featured to

eliminate the usage of coupling capacitor.

2/4

INPUT

30kΩ

30kΩ

OUTPUT

To DRIVER

45Ω

To BIAS

NF

Fig. 2

+

47μF

TR3

TR2

TR1

GND

10/11

13/14

9/12