ADAU1592_15 Datasheet, PDF (1/24 Pages) Analog Devices – Class-D Audio Power Amplifier

Class-D Audio Power Amplifier
ADAU1592
FEATURES
GENERAL DESCRIPTION
Integrated stereo modulator and power stage
0.005% THD + N
101 dB dynamic range
PSRR > 65 dB
RDS-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
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.
Flat panel televisions
PC audio systems
Mini-components
FUNCTIONAL BLOCK DIAGRAM
PGA0 PGA1
AINL
SLC_TH
AINR
AVDD
VREF
AGND
DVDD
DGND
PGA
SLICER
Σ-Δ
MODULATOR
LEVEL SHIFT
AND DEAD
TIME CONTROL
PGA
PGA0 PGA1
VOLTAGE
REFERENCE
f_CLK/2
CLOCK
OSCILLATOR
MODE CONTROL
LOGIC
PVDD
A1
OUTL+
A2
PGND
PVDD
B1
OUTL–
B2
PGND
PVDD
C1
OUTR+
C2
PGND
PVDD
D1
OUTR–
D2
PGND
TEMPERATURE/
OVERCURRENT
PROTECTION
XTI XTO MO/ST STDN MUTE ERR OTW
Figure 1.
ADAU1592
Rev. A
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