12-Channel, High Performance,
192 kHz, 24-Bit DAC
Data Sheet
ADAU1962A
FEATURES
GENERAL DESCRIPTION
Differential or single-ended voltage DAC output
114 dB DAC dynamic range, A-weighted, differential
−97 dB total harmonic distortion plus noise (THD + N),
differential
110 dB DAC dynamic range, A-weighted, single-ended
−95 dB THD + N, single-ended
The ADAU1962A is a high performance, single-chip digital-to-
analog converter (DAC) that provides 12 DACs with differential or
single-ended outputs using the Analog Devices, Inc., patented
multibit sigma-delta (Σ-Δ) architecture. A serial peripheral interface
(SPI)/I2C port is included, allowing a microcontroller to adjust
volume and many other parameters. The ADAU1962A operates
from 2.5 V digital and 3.3 V analog supplies. A linear regulator
is included to generate the digital supply voltage from the analog
supply voltage. The ADAU1962A is available in an 80-lead LQFP.
2.5 V digital and 3.3 V analog and input/output (I/O) supplies
249 mW total quiescent power
Phase-locked loop (PLL) generated or direct master clock
Low electromagnetic interference (EMI) design
Linear regulator driver to generate digital supply
Supports 24-bit and 32 kHz to 192 kHz sample rates
Low propagation 192 kHz sample rate mode
Log volume control with autoramp function
Temperature sensor with digital readout 3°C accuracy
SPI and I2C controllable for flexibility
Software-controllable clickless mute
Software power-down
Right justified, left justified, I2S, and TDM modes
Master and slave modes with up to 12-channel input/output
80-lead LQFP package
The ADAU1962A is designed for low EMI. This consideration
is apparent in both the system and circuit design architectures.
By using the on-board PLL to derive the internal master clock from
an external left-right frame clock (LRCLK), the ADAU1962A
can eliminate the need for a separate high frequency master clock
and can be used with or without a bit clock. The DACs are
designed using the latest Analog Devices continuous time
architectures to further minimize EMI. By using 2.5 V digital
supplies, power consumption is minimized, and the digital
waveforms are a smaller amplitude, further reducing emissions.
Note that throughout this data sheet, multifunction pins, such
as SCLK/SCL, are referred to by the entire pin name or by a
single function of the pin, for example, SCLK, when only that
function is relevant.
Qualified for automotive applications
APPLICATIONS
Automotive audio systems
Home theater systems
Digital audio effects processors
FUNCTIONAL BLOCK DIAGRAM
DIGITAL AUDIO
INPUT
ADAU1962A
SERIAL DATA PORT
DAC
DAC
DAC
SDATA
IN
SDATA
IN
DAC
DAC
DAC
DAC
DIGITAL
DIGITAL
FILTER
AND
VOLUME
CONTROL
DAC
DAC
DAC
DAC
DAC
FILTER
AND
CLOCKS
ANALOG
AUDIO
OUTPUTS
ANALOG
AUDIO
OUTPUTS
VOLUME
CONTROL
TIMING MANAGEMENT
AND CONTROL
(CLOCK AND PLL)
2
SPI/I C
CONTROL PORT
PRECISION
VOLTAGE
REFERENCE
INTERNAL
TEMP
SENSOR
CONTROL DATA
INPUT/OUTPUT
Figure 1.
Rev. A
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license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registeredtrademarks arethe property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©2013–2016 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
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