UTCBA3308

LINEAR INTEGRATED CIRCUIT

1

www.unisonic.com.tw

QW-R107-015,A

DUAL PREAMPLIFIER WITH ALC

DESCRIPTION

The UTC BA3308 is designed to have dual preamplifier

ICs with built – in ALC circuits for use in stereo amplification.

The preamplifiers have high gain and low distortion. A built-in

rectifier for ALC circuit implies good channel balance and

large dynamic range can be constructed with addition of just

an external time constant circuit.

FEATURES

* Wide operating power supply voltage range

* Power-on mute circuit to avoid “pop” noise generation.

* No input coupling capacitors are necessary

* Low distortion (THD=0.1%)

* Good ALC channel balance with built-in ALC rectifier diode

* Adjustable ALC dynamic range by external input resistor.

SIP-9

SOP-14

*Pb-free plating product number: BA3308L

BLOCK DIAGRAM

SIP-9

+

-

ch1

123

4

5678

9

NF1

INPUT1 OUTPUT1 GND

ALC

Vcc

OUTPUT2 INPUT2

NF2

ALC

MUTE

ch2

+

-

SOP-14

+

-

+

-

1

2

3

4

5

6

7

8

9

10

11

12

13

14

N.C.

N.C.

N.C.

N.C.

N.C.

ALC

Vcc

NF1

INPUT1

INPUT2

OUTPUT1

GND

ALC

OUTPUT2

NF2