AD1991ASVRL Analog Devices Inc, AD1991ASVRL Datasheet

no-image

AD1991ASVRL

Manufacturer Part Number
AD1991ASVRL
Description
IC AMP AUDIO PWR 40W STER 52TQFP
Manufacturer
Analog Devices Inc
Type
Class Dr
Datasheet

Specifications of AD1991ASVRL

Rohs Status
RoHS non-compliant
Output Type
2-Channel (Stereo) or 4-Channel (Quad)
Max Output Power X Channels @ Load
40W x 1 @ 4 Ohm; 20W x 2 @ 8 Ohm
Voltage - Supply
6.5 V ~ 22.5 V
Features
Depop, Mute, Short-Circuit and Thermal Protection
Mounting Type
Surface Mount
Package / Case
52-TQFP, 52-VQFP
GENERAL DESCRIPTION
The AD1991 is a 2-channel BTL or 4-channel single-ended
class D audio power output stage. The part is configured during
reset to be in either 2-channel mode or 4-channel mode.
To protect the IC as well as the connected speakers, the AD1991
provides turn-on and turn-off pop suppression, short-circuit
protection, and overtemperature shutdown. To control the IC,
a power-down/reset input and a mute pin are available.
The output stage can be operated over a power supply range
from 8 V to 20 V.
In 2-channel mode, Transistors A1, B2, C1, and D2 are turned
on by a Logic 1 on inputs INA and INC, and Transistors A2,
B1, C2, and D1 are turned on by a Logic 0 on inputs INA and
INC. In 4-channel mode, Transistors A1, B1, C1, and D1 are
turned on by a Logic 1 on the four inputs, and Transistors A2,
B2, C2, and D2 are turned on by a Logic 0 on the four inputs
(see the Functional Block Diagrams).
REV. 0
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. 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.
FEATURES
Class D/1-Bit Audio Power Output Stage
5 V Analog and Digital Supply Voltages
Power Stage Power Supply 8 V to 20 V
Output Power @ 0.1% THD + N
R
Efficiency > 85% @ Full Power/8
Clickless Mute Function
Turn-On and Turn-Off Pop Suppression
Short-Circuit Protection
Overtemperature Protection
Data Loss Protection
2-Channel BTL Outputs or
52-Lead Exposed Pad TQFP Package
Low Cost DMOS Process
APPLICATIONS
PC Audio Systems
Minicomponents
Automotive Amplifiers
Home Theater Systems
Televisions
ON
Stereo Mode
Mono Mode
4-Channel Single-Ended Outputs
< 320 m
2
2
1
20 W @ 4
20 W @ 8
40 W @ 4
(per Transistor)
@ 14.4 V
@ 20 V
@ 20 V
Class D/1-Bit Audio Power Output Stage
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
RST/PDN
MUTE
RST/PDN
CLK
INA
INB
INC
IND
RIGHT
INPUT
INPUT
MUTE
LEFT
CLK
INA
INB
INC
IND
AGND DGND
FUNCTIONAL BLOCK DIAGRAMS
AV
AGND DGND
SWITCH CONTROL
4
DD
AV
LEVEL SHIFTER
n
THERMAL PROTECTION
SHORT-CIRCUIT PROTECTION
MUTE CONTROL
SWITCH CONTROL
DD
4
LEVEL SHIFTER
DV
n
THERMAL PROTECTION
SHORT-CIRCUIT PROTECTION
MUTE CONTROL
AND
DD
DV
© 2003 Analog Devices, Inc. All rights reserved.
AND
DD
2-Channel Mode
4-Channel Mode
CONTROL
TEST
CONTROL
H-BRIDGE
2
TEST
H-BRIDGE
2
A1
A2
B1
B2
C1
C2
D1
D2
PGND
A1
A2
B1
B2
C1
C2
D1
D2
PV
PGND
14
DD
PV
6
14
DD
OUTA
OUTB
OUTC
OUTD
6
3
3
3
3
CURRENT OVERLOAD
THERMAL SHUTDOWN
THERMAL WARNING
DATA LOSS
OUTA
OUTB
OUTC
OUTD
CURRENT OVERLOAD
THERMAL SHUTDOWN
THERMAL WARNING
DATA LOSS
3
3
3
3
AD1991
www.analog.com
LOAD
REQUIRING
DC VOLTAGE
SUPPLY
LOAD
REQUIRING
DC VOLTAGE
SUPPLY

Related parts for AD1991ASVRL

AD1991ASVRL Summary of contents

Page 1

FEATURES Class D/1-Bit Audio Power Output Stage 5 V Analog and Digital Supply Voltages Power Stage Power Supply Output Power @ 0.1% THD + N Stereo Mode 14.4 V ...

Page 2

AD1991–SPECIFICATIONS Parameter OUTPUT POWER kHz SINE WAVE) O EFFICIENCY R ON Per High-Side Transistor Per Low-Side Transistor Temperature Coefficient THERMAL WARNING ACTIVE THERMAL SHUTDOWN ACTIVE OVERCURRENT SHUTDOWN ACTIVE POWER SUPPLIES Supply Voltage AV DD Supply Voltage ...

Page 3

INA t PDL OUTA OUTB RST/PDN MODEx MUTE OUTx t MPDL REV PST t PST t NOL Figure 1. Output Timing t PDRP Figure 2. RESET and Mode Timing t PST Figure 3. MUTE Timing –3– t PST ...

Page 4

... Soldering (10 sec 260°C Vapor Phase (60 sec 215°C Infrared (15 sec 220°C Model AD1991ASV AD1991ASVRL EVAL-AD1991EB CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the AD1991 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges ...

Page 5

Pin No. Mnemonic In/Out 1 PGND1 OUTA DD1 OUTB O 11, 12, 13 PGND1 ERR3 14 I/O ERR2 15 I/O ERR1 16 I/O ERR0 17 I/O 18 INA I ...

Page 6

AD1991 FUNCTIONAL DESCRIPTION Device Architecture The AD1991 is an 8-transistor, audio, power output stage. The AD1991 is arranged internally as four transistor pairs that can be used as two H-bridge outputs (2-channel mode four single-ended outputs (4-channel mode), ...

Page 7

INPUT INA A2 B1 INB B2 LEVEL SHIFTER AND H-BRIDGE SWITCH CONTROL C1 INC C2 D1 IND D2 n CLK THERMAL PROTECTION RST/PDN SHORT-CIRCUIT PROTECTION MUTE CONTROL MUTE AGND DGND ...

Page 8

AD1991 APPLICATION CONSIDERATIONS Good board layout and decoupling are vital for correct operation of the AD1991. Due to the fact that the part switches high currents, there is the potential for large PV bounce each time a transis- DD tor ...

Page 9

Figure 5. Layout Using Surface-Mount Capacitors (4 × × Recommended) Figure 6. Layout Using Through-Hole Capacitors (4 × × Recommended) REV PLANE DD CAP 52 51 ...

Page 10

AD1991 AV AV ANALOG INPUT_L GND ANALOG INPUT_R AGND DGND AGND Figure 7. Simplified System Schematic for Analog-In, Analog-Out System FEEDBACK PWM_L GND AD1991 MODULATOR PWM_R FEEDBACK AGND DGND DGND –10– ...

Page 11

Thin Quad Flat Package, Exposed Pad [TQFP/EP 1.20 MAX 0.20 0.09 REV. 0 OUTLINE DIMENSIONS (SV-52) Dimensions shown in millimeters 12.00 BSC 10.00 BSC SQ TOP VIEW (PINS DOWN) 27 ...

Page 12

–12– ...

Related keywords