Audio Analogue A class Spezifikationen

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Class-D Audio Power Amplifier
ADAU1592
Rev. A
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.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 www.analog.com
Fax: 781.461.3113 ©2007 Analog Devices, Inc. All rights reserved.
FEATURES
Integrated stereo modulator and power stage
0.005% THD + N
101 dB dynamic range
PSRR > 65 dB
R
DS-ON
< 0.3 Ω (per transistor)
Efficiency > 90% (8 Ω)
EMI-optimized modulator
On/off-mute pop-noise suppression
Short-circuit protection
Overtemperature protection
APPLICATIONS
Flat panel televisions
PC audio systems
Mini-components
GENERAL DESCRIPTION
The ADAU1592 is a 2-channel, bridge-tied load (BTL)
switching audio power amplifier with an integrated Σ-
modulator.
The modulator accepts an analog input signal and generates
a switching output to drive speakers directly. A digital,
microcontroller-compatible interface provides control of reset,
mute, and PGA gain as well as output signals for thermal and
overcurrent error conditions. The output stage can operate
from supply voltages ranging from 9 V to 18 V. The analog
modulator and digital logic operate from a 3.3 V supply.
FUNCTIONAL BLOCK DIAGRAM
A1
PVDD
OUTL+
PGND
A2
B1
PVDD
OUTL–
PGND
B2
C1
PVDD
OUTR+
PGND
C2
D1
PVDD
OUTR
PGND
D2
LEVEL SHIFT
AND DEAD
TIME CONTROL
Σ-Δ
MODULATOR
TEMPERATURE/
OVERCURRENT
PROTECTION
MODE CONTROL
LOGIC
CLOCK
OSCILLATOR
PGA
ADAU1592
f
CLK
/2
VOLTAGE
REFERENCE
PGA
SLICER
AINL
SLC_TH
PGA0 PGA1
PGA0 PGA1
AINR
VREF
AVDD
AGND
DVDD
DGND
OTWXTOXTI ERRMUTESTDN
MO/ST
06749-001
Figure 1.
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Inhaltsverzeichnis

Seite 1 - ADAU1592

Class-D Audio Power Amplifier ADAU1592 Rev. A Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsi

Seite 2 - TABLE OF CONTENTS

ADAU1592 Rev. A | Page 10 of 24 06749-011OUTPUT POWER (W)THD OR THD + N (dB)–1200–10–20–110–100–90–80–70–60–50–40–3010m 10100m 1THD + NTHD Figure 1

Seite 3 - SPECIFICATIONS

ADAU1592 Rev. A | Page 11 of 24 06749-017FREQUENCY (kHz)OUTPUT (dBr)0–1600–150–140–130–120–110–100–90–80–70–60–50–40–30–20–102204 6 8 10121416180dB

Seite 4

ADAU1592 Rev. A | Page 12 of 24 06749-023FREQUENCY (Hz)THD OR THD + N (dB)–1200–110–100–90–80–70–60–50–40–20–10–3020 10k100 1kTHD + NTHD Figure 23.

Seite 5

ADAU1592 Rev. A | Page 13 of 24 01020304050607080900 5 10 15 20 25 30EFFICIENCY (%)06749-029OUTPUT POWER (W)POWER LIMITED DUE TO PACKAGE DISSIPATIO

Seite 6 - ABSOLUTE MAXIMUM RATINGS

ADAU1592 Rev. A | Page 14 of 24 06749-038PVDD (V)OUTPUT POWER (W)030255101520911211 1413 1615810 174Ω3Ω8Ω6ΩPOWER LIMITED DUE TO PACKAGE DISSIPATION

Seite 7 - INDICATOR

ADAU1592 Rev. A | Page 15 of 24 .0THEORY OF OPERATIONOVERVIEW The ADAU1592 is a 2-channel, high performance switching audio power amplifier. Each o

Seite 8

ADAU1592 Rev. A | Page 16 of 24 06749-043VCMSLICER_LEVEL50kΩVTHPIN 24 (SLC_TH)REXTERNAL Figure 43. Block for Slicer Threshold Adjust, SLC_TH The sl

Seite 9 - 06749-008

ADAU1592 Rev. A | Page 17 of 24 on the outputs after the LC filter. Typical short-circuit condi-tions include shorting of the output load and short

Seite 10 - Rev. A

ADAU1592 Rev. A | Page 18 of 24 POWER-UP/POWER-DOWN SEQUENCE Figure 46 shows the recommended power-up sequence for the ADAU1592. 06749-046AVDD/DVDD

Seite 11 - 06749-019

ADAU1592 Rev. A | Page 19 of 24 To shut down the power supplies to save power, it is highly recommended to mute the amplifier before shutting down

Seite 12 - Rev. A

ADAU1592 Rev. A | Page 2 of 24 TABLE OF CONTENTS Features ...

Seite 13 - Rev. A

ADAU1592 Rev. A | Page 20 of 24 capacitors must be placed very close to their respective pins with direct connection. This is important for reliabl

Seite 14 - 06749-039

ADAU1592 Rev. A | Page 21 of 24 APPLICATIONS INFORMATION For applications with PVDD > 15 V, add components R1 and R2 (10  typical), C5 and C6 (

Seite 15 - 06749-041

ADAU1592 Rev. A | Page 22 of 24 For applications with PVDD > 15 V, add components R1 (10  typical), C5 (680 pF typical), and D1 through D4 (CRS

Seite 16 - 06749-043

ADAU1592 Rev. A | Page 23 of 24 OUTLINE DIMENSIONS PIN 1INDICATORTOPVIEW6.75BSC SQ7.00BSC SQ1481213373624255.255.10 SQ4.950.500.400.300.300.230.180

Seite 17 - MUTE AND STDN

ADAU1592 Rev. A | Page 24 of 24 NOTES ©2007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of t

Seite 18 - POWER-UP/POWER-DOWN SEQUENCE

ADAU1592 Rev. A | Page 3 of 24 SPECIFICATIONS AVDD = 3.3 V, DVDD = 3.3 V, PVDD = 15 V, ambient temperature = 25°C, load impedance = 6 , clock freq

Seite 19 - 6749-048

ADAU1592 Rev. A | Page 4 of 24 DC SPECIFICATIONS Table 2. Parameter Min Typ Max Unit Test Conditions/Comments INPUT IMPEDANCE 20 kΩ AINL/AI

Seite 20 - Rev. A

ADAU1592 Rev. A | Page 5 of 24 DIGITAL TIMING Table 5. Parameter Min Typ Unit Test Conditions/Comments tWAIT 0.01110002ms Wait time for unmute tI

Seite 21

ADAU1592 Rev. A | Page 6 of 24 ABSOLUTE MAXIMUM RATINGS Table 6. Parameter Rating DVDD to DGND −0.3 V to +3.6 V AVDD to AGND −0.3 V to +3.6 V

Seite 22

ADAU1592 Rev. A | Page 7 of 24 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS 06749-004131415161718192021222324PGA1PGA0MUTESTDNXTIXTODGNDDVDDAVDDAGNDV

Seite 23 - ORDERING GUIDE

ADAU1592 Rev. A | Page 8 of 24 Pin Number Mnemonic Type1Description 34, 35, 36 OUTR− O Output of High Power Transistors, Right Channel Negativ

Seite 24

ADAU1592 Rev. A | Page 9 of 24 TYPICAL PERFORMANCE CHARACTERISTICS 06749-005OUTPUT POWER (W)THD OR THD + N (dB)–1200–10–20–110–100–90–80–70–60–50–4

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