AD1992ACPZRL7 Analog Devices Inc, AD1992ACPZRL7 Datasheet

IC AMP AUDIO PWR 10W 64LFCSP

AD1992ACPZRL7

Manufacturer Part Number
AD1992ACPZRL7
Description
IC AMP AUDIO PWR 10W 64LFCSP
Manufacturer
Analog Devices Inc
Type
Class Dr
Datasheet

Specifications of AD1992ACPZRL7

Output Type
2-Channel (Stereo)
Max Output Power X Channels @ Load
10W x 2 @ 4 Ohm
Voltage - Supply
4.5 V ~ 5.5 V
Features
Depop, Mute, Short-Circuit and Thermal Protection
Mounting Type
Surface Mount
Package / Case
64-LFCSP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
FEATURES
Integrated stereo modulator and power stage
<0.002% THD + N
102 dB dynamic range (A-weighted)
2 × 10 W output power (4 Ω, <0.01% THD + N)
R
PSRR > 65 dB
On-off-mute pop noise suppression
EMI optimized modulator
Short-circuit protection
Overtemperature protection
Low cost DMOS process
APPLICATIONS
Advanced televisions
Compact multimedia systems
Minicomponents
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. 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 owners.
DS-ON
< 0.3 Ω (per transistor)
REF_FILT
CLKO
AINR
AINL
CLKI
AD1992
OSCILLATOR
REFERENCE
VOLTAGE
AGND
PGA1
PGA
PGA
PGA0
MODE CONTROL
SUPPRESSION
LOGIC AND
POP/CLICK
AV
DD
FUNCTIONAL BLOCK DIAGRAM
MODULATOR
MODULATOR
Σ-Δ
Σ-Δ
Figure 1.
DEAD TIME
CONTROL
SHIFTER
LEVEL
DV
AND
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
GENERAL DESCRIPTION
The AD1992 is a 2-channel, bridge tied load (BTL), switching
audio power amplifier with integrated Σ-Δ modulator. The
modulator accepts a single-ended, analog input signal and
converts it to a switching waveform to drive speakers directly. A
digital, microprocessor-compatible interface provides control of
reset, mute, and PGA gain, as well as feedback signals for thermal
and overcurrent error conditions. The output stage can operate
over a power supply voltages range of 8 V to 20 V. The analog
modulator and digital logic operate from a 5 V supply.
DD
Audio Switching Amplifier
H-BRIDGE
A1
A2
B1
B2
C1
C2
D1
D2
PGND
PV
©2006 Analog Devices, Inc. All rights reserved.
FEEDBACK
DD
FEEDBACK
NETWORK
NETWORK
OUTL+
OUTL–
OUTR+
OUTR–
AD1992
www.analog.com

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AD1992ACPZRL7 Summary of contents

Page 1

FEATURES Integrated stereo modulator and power stage <0.002% THD + N 102 dB dynamic range (A-weighted) 2 × output power (4 Ω, <0.01% THD + N) R < 0.3 Ω (per transistor) DS-ON PSRR > On-off-mute ...

Page 2

AD1992 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 General Description ......................................................................... 1 Functional Block Diagram .............................................................. 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Absolute Maximum Ratings............................................................ 5 ESD Caution.................................................................................. 5 Pin Configuration and Function Descriptions............................. 6 Typical Performance Characteristics ...

Page 3

SPECIFICATIONS Test conditions, unless otherwise specified. Table 1. Parameter SUPPLY VOLTAGES AMBIENT TEMPERATURE LOAD IMPEDANCE CLOCK FREQUENCY PGA GAIN MEASUREMENT BANDWIDTH Table 2. Parameter R DS-ON Per High-Side Transistor Per Low-Side Transistor MAXIMUM CURRENT ...

Page 4

AD1992 Table 5. Power Supplies Parameter ANALOG SUPPLY DIGITAL SUPPLY POWER TRANSISTOR SUPPLY RESET/POWER-DOWN CURRENT QUIESCENT CURRENT OPERATING CURRENT ...

Page 5

ABSOLUTE MAXIMUM RATINGS Table 8. Parameter AVDD, DVDD to AGND, DGND 1 PVDDx to PGNDx AGND to DGND to PGNDx AVDD, to DVDD Operating Temperature Range Storage Temperature Range Maximum Junction Temperature Thermal Resistance θ JA θ (at the Exposed ...

Page 6

AD1992 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS CONNECT Table 9. Pin Function Descriptions Pin No. Mnemonic In/Out PGND1 OUTL PVDD1 11, 12, 13 OUTL− O 14, ...

Page 7

Pin No. Mnemonic In/Out 52, 54, 59 AINR I 55 REF_FILT O 56 AGND 57 AVDD 58 MOD_FILT O 60 AINL O 62 NFL− NFL+ I Description No Connection—Should Be Left Floating. Analog Input for ...

Page 8

AD1992 TYPICAL PERFORMANCE CHARACTERISTICS 0 –20 –40 –60 –80 –100 –120 –140 –160 FREQUENCY (kHz) Figure Output Power into 4 Ω Load, PVDD = –20 –40 –60 ...

Page 9

FREQUENCY (Hz) Figure 10. IMD for 19 kHz/20 kHz Twin-Tone Stimulus with 500 mW Power in Each Tone 40 PGA GAIN = 18dB 35 30 PGA GAIN = 12dB ...

Page 10

AD1992 –10 –20 –30 –40 –50 –60 –70 –80 –90 –100 –110 –120 –130 –140 20 50 100 200 500 1k FREQUENCY (Hz) Figure 16. Power Supply Rejection Ratio (PSRR) vs. Frequency 250 200 150 100 50 ...

Page 11

THD + N 0.01 THD 0.001 0.1 1 OUTPUT POWER (W) Figure 22. THD and THD + N vs. Output Power, 1 kHz Sine, 4 Ω Load, PVDD = 12 V 100 10 1 0.1 THD ...

Page 12

AD1992 100 10 1 0.1 THD + N 0.01 THD 0.001 0.1 1 OUTPUT POWER (W) Figure 28. THD and THD + N vs. Output Power, 1 kHz Sine, 4 Ω Load, PVDD = 18 V 100 10 1 0.1 ...

Page 13

THEORY OF OPERATION OVERVIEW The AD1992 is a 2-channel, high performance, switching, audio power amplifier. Each of the two Σ-Δ modulators converts a single-ended analog input into a 2-level pulse stream that controls the differential, full H-bridge, power output stage. ...

Page 14

AD1992 Note that the amplifier is capable of dc-coupled operation if the circuit includes some means to account for this bias voltage Figure 34. AC-Coupled Input Signal Setting the Modulator Gain The AD1992 modulator uses a combination of ...

Page 15

The power supply for the output stage of the AD1992, PV should be in the range and should be capable of supplying enough current to drive the load. Connect the power supply across the PVDD ...

Page 16

AD1992 Using an External Clock Source If a clock signal of the appropriate frequency already exists in the application circuit, connect it directly to CLKI and leave CLKO floating. The logic levels of the square wave should be compatible with ...

Page 17

APPLICATION CIRCUITS + 4.7µF DIGITAL INPUTS THERMAL SHUTDOWN THERMAL WARNING OVERCURRENT 0.1µF 47µF 1000µ 0.1µF 47µF 10µF + AINL OUTL+ NFL+ 10µF + AINR NFL– REF_FILT 0.1µF OUTL– AD1992 ...

Page 18

... MAX 0.85 0.80 SEATING PLANE ORDERING GUIDE Model Temperature Range 1 AD1992ACPZ −40°C to +85°C 1 AD1992ACPZRL −40°C to +85°C 1 AD1992ACPZRL7 −40°C to +85°C EVAL-AD1992EB Pb-free part. 9.00 BSC SQ 0.60 MAX 49 48 8.75 TOP BSC SQ VIEW 0.45 0.40 ...

Page 19

NOTES Rev Page AD1992 ...

Page 20

AD1992 NOTES ©2006 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D05776-0-4/06(0) Rev Page ...

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