A6283

LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

6 of 7

www.unisonic.com.tw

QW-R107-047,A

3. INPUT STAGE

The input circuit of this IC is as shown in Fig.2.

PNP TR: Q1 is provided in the input circuit so as to make its usage possible without the input coupling capacitor.

However, at pins ⑤ and ⑦, max 60mV offset voltage is produced.

Application after checking volume slide noise is recommended.

5/7

2/10

+

4/8

6

INPUT

OUTPUT

20kΩ

30Ω

Q2

Q3

Q1

30kΩ

Pre-GND

to DRIVER

to BIAS

47μF

Fig.2.

4. OSCILLATION PERVENTIVE MEASURES

For oscillation preventive capacitor C6 and C7 between the output terminal and GND, it is recommended to use

polyester film capacitor having good characteristics for temperature and for high frequency.

Since the characteristics of the capacitor is liable to be influenced by the temperature, use this capacitor after the

temperature test to check the oscillation allowance. In addition, as the position of the electrolytic capacitor has a

At using this application with the voltage gain reduced, oscillation is liable to be produced. Apply the capacitor after

checking enough for its capacity, type and mounting position.

5. INPUT VOLTAGE