AP4809
Stereo Headphone Amplifier With Shutdown Mode


This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of
this product. No rights under any patent accompany the sale of the product.
Rev. 1.0 Sep 29, 2004
1/9

„ Features

- Operate from 3V to 7V Single Supply Voltage
- High Signal-to-Noise ratio
- High Slew Rate
- Large Output Voltage Swing
- Low Distortion
- Low Power Consumption
- Switch On/Off Click suppression
- Excellent Power Supply Ripple Rejection
- SOP-8, PDIP-8 and MSOP-8 Pb-Free Packages

„ Applications

- CD-ROM, DVD-ROM
- MP3 Player
- Battery Powered Devices
- Personal Computers

„ Pin Assignments

SOP-8L/PDIP-8L
1
2
3
45
6
7
8
(Top View)
IN1-
GND
BYPASS
Vo2
Vo1 V
DD
SHUTDOWN
IN2-


MSOP-8L
1
2
3
45
6
7
8
(Top View)
IN1-
GND
BYPASS
Vo2
Vo1 V
DD
SHUTDOWN
IN2-


„ General Description

The AP4809 is a stereo power amplifier in an 8-pin
SOP package capable of delivering 70mW
continuous average power per channel into 32Ω
loads with less than 0.1% (THD+N) from a 5V power
supply. Amplifier gain is externally configured by
means of two resistors per input channel. It was
designed specially to provide high quality output
power with a minimal amount of external
components and is therefore optimally suited for
low-power portable systems.







„ Pin Descriptions

Pin
No.
Pin Name Description
1 Vo1 Output 1
2 IN1- Inverting input 1
3 BYPASS
Tap to voltage divider for
internal mid-rail bias supply.
4 GND Ground
5 SHUTDOWN
Logic low to put chip in
shutdown mode.
6 IN2- Inverting input 2
7 Vo2 Output 2
8 V
DD
Positive power supply



„ Ordering Information

Package Packing
S : SOP-8L
N: PDIP-8L
M: MSOP-8L
AP4809 X
Blank : Tube
A : Taping
X