ADAU1592ACPZ Analog Devices Inc, ADAU1592ACPZ Datasheet

18W Int Stereo Switching Audio Power Amp

ADAU1592ACPZ

Manufacturer Part Number
ADAU1592ACPZ
Description
18W Int Stereo Switching Audio Power Amp
Manufacturer
Analog Devices Inc
Type
Class Dr
Datasheet

Specifications of ADAU1592ACPZ

Output Type
2-Channel (Stereo)
Max Output Power X Channels @ Load
24W x 2 @ 4 Ohm
Voltage - Supply
9 V ~ 18 V
Features
Depop, Mute, Short-Circuit and Thermal Protection, Standby
Mounting Type
Surface Mount
Package / Case
48-LFCSP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

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FEATURES
Integrated stereo modulator and power stage
0.005% THD + N
101 dB dynamic range
PSRR > 65 dB
R
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
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.
DS-ON
< 0.3 Ω (per transistor)
SLC_TH
AGND
DGND
DVDD
AVDD
VREF
AINR
AINL
PGA0
PGA0
SLICER
PGA
PGA
REFERENCE
VOLTAGE
PGA1
PGA1
FUNCTIONAL BLOCK DIAGRAM
f
OSCILLATOR
CLK
XTI
CLOCK
/2
MODULATOR
XTO
Σ-Δ
MO/ST
Figure 1.
STDN
MODE CONTROL
TIME CONTROL
Class-D Audio Power Amplifier
LEVEL SHIFT
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
AND DEAD
GENERAL DESCRIPTION
The ADAU1592 is a 2-channel, bridge-tied load (BTL)
switching audio power amplifier with an integrated Σ-Δ
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.
LOGIC
MUTE
ERR
OTW
TEMPERATURE/
OVERCURRENT
PROTECTION
ADAU1592
A1
A2
B1
B2
C1
C2
D1
D2
©2007 Analog Devices, Inc. All rights reserved.
PVDD
OUTL+
PGND
PVDD
OUTL–
PGND
PVDD
OUTR+
PGND
PVDD
OUTR–
PGND
ADAU1592
www.analog.com

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ADAU1592ACPZ Summary of contents

Page 1

FEATURES Integrated stereo modulator and power stage 0.005% THD + N 101 dB dynamic range PSRR > < 0.3 Ω (per transistor) DS-ON Efficiency > 90% (8 Ω) EMI-optimized modulator On/off-mute pop-noise suppression Short-circuit protection Overtemperature protection ...

Page 2

ADAU1592 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 General Description ......................................................................... 1 Functional Block Diagram .............................................................. 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Audio Performance ...................................................................... 3 DC Specifications ......................................................................... 4 Power Supplies .............................................................................. 4 Digital I/O ..................................................................................... 4 ...

Page 3

SPECIFICATIONS AVDD = 3.3 V, DVDD = 3.3 V, PVDD = 15 V, ambient temperature = 25°C, load impedance = 6 Ω, clock frequency = 24.576 MHz, measurement bandwidth = kHz, unless otherwise specified. AUDIO PERFORMANCE ...

Page 4

ADAU1592 DC SPECIFICATIONS Table 2. Parameter INPUT IMPEDANCE OUTPUT DC OFFSET VOLTAGE POWER SUPPLIES Table 3. Parameter ANALOG SUPPLY VOLTAGE (AVDD) DIGITAL SUPPLY VOLTAGE (DVDD) POWER TRANSISTOR SUPPLY VOLTAGE (PVDD) POWER-DOWN CURRENT AVDD DVDD PVDD MUTE CURRENT AVDD DVDD PVDD ...

Page 5

DIGITAL TIMING Table 5. Parameter Min t 0.01 1 WAIT t INT HOLD t OUTx+/OUTx− OUTx+/OUTx− MUTE 1 t and t are the minimum times for fast turn-on and do not guarantee pop-and-click suppression. WAIT ...

Page 6

ADAU1592 ABSOLUTE MAXIMUM RATINGS Table 6. Parameter Rating DVDD to DGND −0 +3.6 V AVDD to AGND −0 +3 PVDD to PGND −0 +20.0 V MUTE/STDN Inputs DGND − 0 ...

Page 7

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 8. Pin Function Descriptions Pin Number Mnemonic Type OUTL− OUTL TEST1 I 8 TEST0 I 9 ERR O 10 OTW O 11 MO/ ...

Page 8

ADAU1592 Pin Number Mnemonic Type 34, 35, 36 OUTR− O 37, 38, 47, 48 PGND P 39, 40, 41, 42, PVDD P 43, 44, 45 input output power. 1 Description Output of ...

Page 9

TYPICAL PERFORMANCE CHARACTERISTICS 0 –10 –20 –30 –40 –50 –60 THD + N –70 –80 –90 THD –100 –110 –120 10m 100m 1 OUTPUT POWER (W) Figure 5. THD or THD + N vs. Output Power, 4 Ω, PVDD = ...

Page 10

ADAU1592 0 –10 –20 –30 –40 –50 –60 THD + N –70 –80 –90 THD –100 –110 –120 10m 100m 1 OUTPUT POWER (W) Figure 11. THD or THD + N vs. Output Power, 4 Ω, PVDD = 15 V ...

Page 11

FREQUENCY (kHz) Figure 17. FFT @ Ω, PVDD = 15 V, PGA ...

Page 12

ADAU1592 0 –10 –20 –30 –40 –50 –60 –70 –80 THD + N –90 –100 THD –110 –120 20 100 1k FREQUENCY (Hz) Figure 23. THD or THD + N vs. Frequency @ Ω, PVDD = 15 ...

Page 13

POWER LIMITED DUE TO PACKAGE DISSIPATION OUTPUT POWER (W) Figure 29. Efficiency vs. Output Power Ω 100 ...

Page 14

ADAU1592 100 110 120 130 140 150 160 T (°C) AMBIENT Figure 35. Power Dissipation Derating vs. Ambient Temperature 40 POWER LIMITED DUE ...

Page 15

THEORY OF OPERATION OVERVIEW The ADAU1592 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 PDM output. This PDM pulse stream is output from the internal ...

Page 16

ADAU1592 V CM 50kΩ SLICER_LEVEL V TH PIN 24 (SLC_TH) R EXTERNAL Figure 43. Block for Slicer Threshold Adjust, SLC_TH The slicer threshold can be set externally using a resistor as follows: ⎛ Ω ⎛ ⎞ AVDD ⎜ ...

Page 17

LC filter. Typical short-circuit condi- tions include shorting of the output load and shorting to either PVDD or PGND. UNDERVOLTAGE PROTECTION The ADAU1592 is also comprised of an undervoltage protec- tion circuit, which senses the ...

Page 18

ADAU1592 POWER-UP/POWER-DOWN SEQUENCE Figure 46 shows the recommended power-up sequence for the ADAU1592. AVDD/DVDD PVDD STDN t INT INTERNAL MUTE t WAIT MUTE PVDD/2 OUTx+/OUTx– AVDD/2 AINx t = 650ms @ 24.576MHz CLOCK INT t = 200µs PDL ...

Page 19

To shut down the power supplies to save power highly recommended to mute the amplifier before shutting down any of the supplies. To achieve this, first pull down MUTE , then shut down the power supplies in the ...

Page 20

ADAU1592 capacitors must be placed very close to their respective pins with direct connection. This is important for reliable and safe operation of the device. One additional 1 μF capacitor in parallel to the 100 nF capacitor is also recommended. ...

Page 21

APPLICATIONS INFORMATION For applications with PVDD > add components R1 and R2 (10 Ω typical), C5 and C6 (680 pF typical), and D1 through D8 (CRS01/02). 2.2µF ANALOG AINL INPUT LEFT 100kΩ SLC_TH R3 VREF 4.7µF 100nF 2.2µF ...

Page 22

ADAU1592 For applications with PVDD > add components R1 (10 Ω typical), C5 (680 pF typical), and D1 through D4 (CRS01/02). 2.2µF ANALOG AINL INPUT LEFT 100kΩ SLC_TH R3 VREF 4.7µF 100nF 2.2µF ANALOG AINR INPUT RIGHT 100kΩ ...

Page 23

... COPLANARITY VIEW A ROTATED 90 ° CCW ORDERING GUIDE Temperature Model Range ADAU1592ACPZ 1 −40°C to +85°C 1 ADAU1592ACPZ-RL −40°C to +85°C ADAU1592ACPZ-RL7 1 −40°C to +85°C 1 ADAU1592ASVZ −40°C to +85°C 1 ADAU1592ASVZ-RL −40°C to +85°C 1 ADAU1592ASVZ-RL7 −40°C to +85°C 1 EVAL-ADAU1592EBZ RoHS Compliant Part ...

Page 24

ADAU1592 NOTES ©2007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D06749-0-9/07(A) Rev Page ...

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