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Analog Devices Semiconductor Electronic Components Datasheet

AD1996 Datasheet

Class-D Audio Power Amplifier

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AD1996 pdf
Preliminary Technical Data
FEATURES
Integrated Stereo Modulator & Power Stage
0.005% THD+N
101.5dB Dynamic Range
PSRR > 65 dB
RDS-ON < 0.3 (per transistor)
Efficiency > 80% @ 5W/6
EMI Optimized Modulator
On-Off-Mute Pop Noise Suppression
Short Circuit Protection
Over-Temperature Protection
Low Cost DMOS Process
APPLICATIONS
Flat Panel Televisions
Automotive Amplifiers
PC Audio Systems
Mini Components
Class-D Audio Power Amplifier
AD1990/AD1992/AD1994/AD1996
GENERAL DESCRIPTION
The AD199x is a two channel Bridge Tied Load (BTL)
switching audio power amplifier with integrated modulator.
The modulator accepts a 1Vrms input signal (maximum power)
and generates a switching waveform to drive speakers directly.
One of the two modulators can control both output stages
providing twice the current for single-channel applications. A
digital, microcontroller-compatible interface provides control of
reset, mute and PGA gain as well as output signals for thermal
and over-current error conditions. The output stage can operate
from supply voltages ranging from 8V to 20V. The analog
modulator and digital logic operate from a 5V supply.
AD1990: 5Wx2 (10Wx1)
AD1992: 10Wx2 (20Wx1)
AD1994: 25Wx2 (50Wx1)
AD1996: 40Wx2 (80Wx1)
62 63
3w2 ww.D3a1taS6h0eet4U5.c3om
7,8
PVDD
4,5,6
OUTL+
1,2,3
PGND1
9,10
PVDD1
11,12,13
OUTL-
14,15,16
PGND1
PGND1
LEFT CHANNEL
DRIVER
HIGH SIDE
LEVEL
SHIFT
+
DEAD
TIME
CONTROL
DRIVER
LOW SIDE
Σ∆
M O D U L AT O R
PGA
PGA
50 51
RIGHT CHANNEL
Σ∆
M O D U L AT O R
DRIVER
HIGH SIDE
LEVEL
SHIFT
+
DEAD
TIME
CONTROL
DRIVER
LOW SIDE
DRIVER
HIGH SIDE
DRIVER
LOW SIDE
PVDD2
PGND2
PVDD2
PGND2
41,42
PVDD2
43,44,45
OUTR+
46,47,48
PGND2
39,40
PVDD2
36,37,38
OUTR-
33,34,35
PGND2
55
R E F _ F ILT
57
AV D D
56
AGND
24,25
DVDD
23,26
DGND
V O LTA G E
REFERENCE
T E M P E R AT U R E
SENSE &
OVER-CURRENT
PROTECTION
Ø1 Ø2
O S C ILL ATO R
27 28
CLKI CLKO
Ø1 Ø2
MODE CONTROL LOGIC
MUTE/
POP
CONTROL
30 29 19 18 17 49
22 21 20
Figure 1. Block Diagram
Rev. PrA – 1/20/05
Information furnished by Analog Devices is believed to be accurate and reliable.
However, no responsibility is assumed by Analog Devices for its use, nor for any
infringements of patents or other rights of third parties that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective companies.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.326.8703 © 2005 Analog Devices, Inc. All rights reserved.


Analog Devices Semiconductor Electronic Components Datasheet

AD1996 Datasheet

Class-D Audio Power Amplifier

No Preview Available !

AD1996 pdf
AD199x
TABLE OF CONTENTS
General Description ........................................................................ 1
AD199x—Specifications.................................................................. 3
test conditions unless otherwise noted...................................... 3
Absolute Maximum Ratings............................................................ 6
Pin Configurations And Functional Descriptions ....................... 7
Typical Performance Characteristics ............................................. 8
Preliminary Technical Data
Functional Description.................................................................. 10
Device Architecture ................................................................... 10
Amplifier Gain............................................................................ 10
System Design............................................................................. 11
Outline Dimensions ....................................................................... 14
ESD Caution................................................................................ 14
Rev. PrA – 1/20/05 | Page 2 of 16


Part Number AD1996
Description Class-D Audio Power Amplifier
Maker Analog Devices
Total Page 16 Pages
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