AS1701_1 AMSCO [austriamicrosystems AG], AS1701_1 Datasheet

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AS1701_1

Manufacturer Part Number
AS1701_1
Description
1.6W Audio Power Amplifiers
Manufacturer
AMSCO [austriamicrosystems AG]
Datasheet
1.AS1701_1.pdf (17 pages)
A S 1 7 0 1 , A S 1 7 0 6
1 . 6 W A u d i o P o w e r A m p l i f i e r s
1 General Description
The AS1701 and AS1706 are 1.6W bridged audio power
amplifiers that provide excellent circuit reliability, provid-
ing a very low-cost solution by eliminating external com-
ponents when used with 2.7 to 5.5V-powered circuits.
The devices have superb total harmonic distortion
(THD) at high-power output and excellent power supply
rejection with 4- and 8Ω-loads.
Integrated over-temperature and over-current protection
circuitry switch the devices off in case of an output
short-circuit. A digital input allows the devices to auto-
matically switch into shutdown mode. Click- and pop-
suppression circuitry reduces audible clicks and pops
during power-up and shutdown. The gain (A
devices is controlled using external resistors.
The AS1701/AS1706 are available in an 8-pin MSOP
package.
Figure 1. Typical Configuration Block Diagram
www.austriamicrosystems.com
Audio
Input
0.33µF
C
IN
0.1 to
1µF
20kΩ
R
+
C
IN
20kΩ
B
SHDN
BIAS
R
IN+
F
IN-
4
3
2
1
–
+
V
) of the
Bias
10µF
Revision 1.52
+
V
50kΩ
50kΩ
GND
DD
C
S
/2
6
2 Key Features
3 Applications
The AS1701/AS1706 are ideal as audio front-ends for
battery powered audio devices such as MP3 and CD
players, mobile phones, PDAs, portable DVD players,
and any other hand-held battery-powered device.
V
!
!
!
!
!
!
!
!
!
!
DD
7
V
DD
2.7 to 5.5V (V
Very High PSRR: Greater Than 65dB @ 217Hz
THD+Noise: 1.6W into 4Ω at 1%
No Output Coupling Capacitors Required
External Gain Configuration Capability
Low-Power Shutdown Mode: 10nA
Click and Pop Suppression
Over-Temperature and Over-Current Protection
Operating Temperature Range: -40 to +85°C
8-pin MSOP Package
40kΩ
40kΩ
–
+
Av = -1
AS1701/
AS1706
DD
) Single-Supply Operation
5
OUT+
8
OUT-
4 or 8Ω
RL =
D a t a S h e e t
1 - 17

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AS1701_1 Summary of contents

Page 1

General Description ...

Page 2

AS1701, AS1706 Data Sheet - Pinout Pin Assignments Figure 2. Pin Assignment – 8-Pin MSOP Package (Top View) Pin Descriptions Table 1. Pin Descriptions Pin Name Shutdown. Connect this pin to GND for ...

Page 3

AS1701, AS1706 Data Sheet - Absolute Maximum Ratings Stresses beyond those listed in Table 2 and functional ...

Page 4

AS1701, AS1706 Data Sheet - Electrical Characteristics All specifications are 100% tested at T ...

Page 5

AS1701, AS1706 Data Sheet - Typical Operating Characteristics Figure ...

Page 6

AS1701, AS1706 Data Sheet - Figure 9. THD + Noise ...

Page 7

AS1701, AS1706 Data Sheet - Figure 15. THD + Noise ...

Page 8

AS1701, AS1706 Data Sheet - Figure 21. Output Power vs. ...

Page 9

AS1701, AS1706 Data Sheet - Figure 27. Output Power vs. ...

Page 10

AS1701, AS1706 Data Sheet - Detailed Description The AS1701/AS1706 bridged audio power-amplifiers can deliver 1.6W into 4 Ω while operating ...

Page 11

AS1701, AS1706 Data Sheet - Application Information BTL Amplifier The AS1701/AS1706 are designed to drive loads differentially ...

Page 12

AS1701, AS1706 Data Sheet - the internal power dissipation exceeds the maximum allowed for a given package, ...

Page 13

AS1701, AS1706 Data Sheet - Input Filter Input capacitor C (if used), in conjunction with R IN ing ...

Page 14

AS1701, AS1706 Data Sheet - Figure 31. Volume Control Configuration Audio H Input AS150x L For more information ...

Page 15

AS1701, AS1706 Data Sheet - Package Drawings and Markings Figure 32. 8-pin MSOP ...

Page 16

AS1701, AS1706 Data Sheet - Ordering Information The devices are available as the standard products shown in Table 5. Ordering ...

Page 17

AS1701, AS1706 Data Sheet Copyrights Copyright © 1997-2007, austriamicrosystems AG, Schloss Premstaetten, 8141 Unterpremstaetten, Austria-Europe. Trademarks Registered ®. All rights reserved. The material herein may not be reproduced, adapted, merged, trans- lated, stored, or used without the prior written consent ...

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