51408 TI IM / 82907 TI IM 20060927-S00005 No.A0898-1/16

Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate

the performance, characteristics, and functions of the described products in the independent state, and are not

guarantees of the performance, characteristics, and functions of the described products as mounted in the

customer

device, the customer should always evaluate and test devices mounted in the customer

equipment.

Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to

"standard application", intended for the use as general electronics equipment (home appliances, AV equipment,

communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be

intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace

instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety

equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case

of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee

thereof. If you should intend to use our products for applications outside the standard applications of our

customer who is considering such use and/or outside the scope of our intended standard applications, please

consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our

customer shall be solely responsible for the use.

LA74308LP

Overview

The LA74308LP is a SPEAKER AMP and MIC AMP built-in audio interface for DSC.

It incorporates an 8/16kHz trap and supports CODECs with a sampling rate of 8kHz or 16kHz.

Features

• Three-wire type SERIAL communication

• MIC AMP

• MIC power supply incorporated (with built-in pull-up resistor)

• ALC AMP

• 4th order LPF + trap (compatible with REC/PB changeover, trap frequency selectable from 8kHz and 16kHz)

• SPEAKER AMP (The BEEP signal can be mixed.)

• Electronic VOLUME (controlled by serial communication)

• LINE output (with SERIAL MUTE and MUTE transistor)

• STANDBY control

Specifications

Maximum Ratings at Ta=25

°C

Parameter

Symbol

Conditions

Ratings

Unit

Maximum supply voltage

VCC max

5.0

V

Allowable power dissipation

Pd max

Ta

≤85°C *

500

mW

Operating temperature

Topr

-10 to +85

°C

Storage temperature

Tstg

-55 to +150

°C

* Printed circuit board mounting condition (40mm × 50mm × 0.8mm: glass epoxy) 2S2P (Four layers printed circuit board)

Ordering number : ENA0898A

Monolithic Linear IC

Audio Interface for DSC