FAN7040 查看數據表（PDF） - Fairchild Semiconductor

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FAN7040

3W Mono BTL Amplifier with DC Volume Control

Fairchild Semiconductor 

www.fairchildsemi.com

FAN7040

3W Mono BTL Amplifier with DC Volume Control

Features

• DC Volume Control : +37dB ~ -52dB

• Few External Components

• Mute Mode

• Thermal Protection

• Short-Circuit Proof

• No Switch-On or Switch-Off Clicks

• Good Overall Stability

• Low Power Consumption

• Low HF Radiation

• ESD Protected On All Pins

Applications

• TVs and Monitors

• Portable Computers

• Desktop computers

• Low Voltage Audio Systems

Description

The FAN7040 is a mono Bridge-Tied Load(BTL) output

amplifier with DC volume control. It is designed for use in

TVs and monitors, but is also suitable for battery-fed porta-

ble recorders and radios. The device is contained in a 20-lead

small outline package.

A Missing Current Limiter(MCL) is built in. the MCL cir-

cuit is activated when the difference in current between the

output terminal of each amplifier exceeds 130mA. This level

of 130mA allows for Single-Ended(SE) headphone applica-

tions.

20SOP

1

Internal Block Diagram

VCC

4

FAN7040

IN 5

VGA

Power Amp

14 OUT+

VC 7

17 OUT-

DC Gain

Control

Missing current

Bandgap

protection

Reference Over-Temperature

Protection

Power Amp

1-3, 8-13, 16, 18 and 20

NC

6

SGND

15

PGND

©2004 Fairchild Semiconductor Corporation

Rev. 1.1.0

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