Copyright  ANPEC Electronics Corp.
Rev. A.5 - Apr., 2001
APA4801
www.anpec.com.tw1
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise
customers to obtain the latest version of relevant information to verify before placing orders.
Stereo 280mW 8Ω Speaker Driver with Mute
APA4801
Package Code
J : PDIP-8 K : SOP-8
Temp. Range
I : - 40 to 85 C
Handling Code
TU : Tube
TR : Tape & Reel
Handling Code
Temp. Range
Package Code
°
• Operating Voltage
Single Supply 3V to 7V
Dual Supply ±1.5V to ± 3.5V
• High Signal-to-Noise Ratio 100dB
• High Slew Rate 5V/ µs
• Low Distortion -65dB
• Output Power at 10% THD+N
into 8Ω 280mW
into 16Ω 160mW
• Large Output Voltage Swing
• Excellent Power Supply Ripple Rejection
• Flexible Mute Function
• Integrated Voltage Divider (V
DD
/2) to Elimi-
nate External Resistors
• Low Power Consumption
• Short-circuit Elimination
• Wide Temperature Range
• No Switch ON/OFF Clicks
• Available in 8 pin SOP or DIP Package
Ordering Information
Features
The APA4801 is an integrated class AB stereo head-
phone amplifier contained in an SO-8 or a DIP-8 plas-
tic package with Mute feature . Besides the common
Mute feature , the APA4801 further integrates a volt-
age divider inside the chip . Thus , the external resis-
tors can be eliminated . The device has been prima-
rily developed for portable digital audio applications .
Applications
General Description
Block Diagram
Input B
Out B
BIAS
Mute
Out A
Input A
BIAS
0dB
+
A
B
+
1
2
3
4
V
SS
5
6
7
8 V
DD
130kΩ 130kΩ
0dB
MUTE
G31
• Portable Digital Audio
• Personal Computers
• Microphone Preamplifier