82907 TI IM 20061115-S00005 No.A0903-1/5

LA74309TT

Overview

LA74309TT is a microphone amplifier for digital still cameras that have mono audio recording. The analog signal processing

for the recording of the digital still camera or other equipment can be easily composed, because the MIC power supply and

the ALC circuit are built-in. Moreover, the regulator is built-in, therefore external regulator IC is unnecessary.

Features

• Microphone (MIC) amplifier (+20dB)

• MIC power supply with built-in pull-up resistor

• Automatic level control (ALC) amplifier (output level=-1dBV≈2.5Vpp)

• 3rd order LPF (fc=11kHz)

• 3.3V regulator (internal supply voltage: VCCA≈3.0V)

• Standby control (ICC≤10µA)

Specifications

Maximum Ratings at Ta=25

°C

Parameter

Symbol

Conditions

Ratings

Unit

Maximum power supply voltage

VCC max

4.0

V

Allowable power dissipation

Pd max

Ta

≤85°C

50

mW

Operating temperature

Topr

-20 to +85

°C

Storage temperature

Tstg

-55 to +150

°C

Ordering number : ENA0903

Monolithic Linear IC

Microphone Amplifier for

Digital Still Camera

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.