ICs for Audio Common Use
1
Publication date: December 2001 SDC00042BEB
AN17000A
Audio signal processing IC for notebook PC
a73 Overview
AN17000A has a speaker power amplifier, head-
phone power amplifier, line amplifier, electronic
volume and a bass boost circuit for notebook PC.
This IC adopts a small thin package, enabling com-
pact and a space saving set.
a73 Features
• Possible speaker power is
1 W × 2-ch. : 8 Ω output at V
CC
= 5 V or
0.5 W × 2-ch. : 8 Ω output at V
CC
= 5 V
• A gain and frequency response of bass boost can
be adjusted with external components
• Each amplifiers has a standby and mute switch
• Small outline thin package (1.0 mm)
a73 Applications
• Notebook PC
• LCD monitor with speakers for PC
HSOP056-P-0300A (Lead-free package)
Unit: mm
a73 Block Diagram
Speak
er amplif
ier
with bass boost 5 V
,

8
Ω
, 1
W
Head phone amplif
ier
Beep inputElectronic v
olume
Line amplif
ier
Bass boost SW Speak
er amplif
ier
standby SW Head phone amplif
ier
standby SW Speak
er amplif
ier
mute SW Head phone amplif
ier
mute SW Line amplif
ier
mute SW
  
14.00±0.10
0.20±0.05(0.25)
(1.00)
0° to 8°
0.50±0.10
0.15
±0.05
Seating plane Seating plane
(6.90)
(5.45)
56
29
281
(2.25)
(3.70)
6.10
±0.10
0.10
±0.10
8.10
±0.20
1.20 max.(1.00)
0.50
M0.10
0.10
Area of no resin flash