ADAU1590_15 Datasheet, PDF (1/24 Pages) Analog Devices – Class-D Audio Power Amplifier

Class-D Audio Power Amplifier
ADAU1590
FEATURES
GENERAL DESCRIPTION
Integrated stereo modulator and power stage
The ADAU1590 is a 2-channel, bridge-tied load (BTL)
0.005% THD + N
switching audio power amplifier with an integrated Σ-Δ
101 dB dynamic range
modulator.
PSRR >55 dB
The modulator accepts an analog input signal and generates
RDS-ON < 0.3 Ω (per transistor)
a switching output to drive speakers directly. A digital,
Efficiency > 90% (8 Ω)
EMI-optimized modulator
On/off-mute pop-noise suppression
Short-circuit protection
Overtemperature protection
E _APPLICATIONS
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 15 V. The analog
modulator and digital logic operate from a 3.3 V supply.
Flat panel televisions
PC audio systems
T _{Mini-components}
FUNCTIONAL BLOCK DIAGRAM
PGA0 PGA1
E _AINL
PGA
OL _{SLC_TH}
SLICER
Σ-Δ
MODULATOR
LEVEL SHIFT
AND DEAD
TIME CONTROL
S _AINR
PGA
OB ^AVDD
PGA0 PGA1
PVDD
A1
OUTL+
A2
PGND
PVDD
B1
OUTL–
B2
PGND
PVDD
C1
OUTR+
C2
PGND
PVDD
D1
OUTR–
D2
PGND
VREF
AGND
DVDD
VOLTAGE
REFERENCE
f_CLK/2
CLOCK
OSCILLATOR
MODE CONTROL
LOGIC
TEMPERATURE
OVERCURRENT
PROTECTION
DGND
ADAU1590
XTI XTO MO/ST STDN MUTE ERR OTW
Figure 1.
Rev. 0
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