STEVAL-CCA018V1 Datasheet, PDF (1/4 Pages) STMicroelectronics – Single-supply stereo digital audio line driver based on the TS4657

STEVAL-CCA018V1
Single-supply stereo
digital audio line driver based on the TS4657
Data brief
Features
■ Power supply range: 3 V to 5.5 V
■ Audio line output: 2.2 V_RMS for entire V_CC
range
■ 16 to 24-bit audio data format stereo DAC, 32
to 48 kHz sample rate
■ I²S, right or left justified compatible digital
audio interface
■ 95 dB SNR A-weighted at 48 kHz, V_CC = 5 V
■ 7.4 mA current consumption at V_CC = 3 V, full
operation
■ Internal negative power supply to ensure
ground-referenced, cap-less outputs
■ No external capacitor needed for the negative
power supply generation
■ Integrated structure to suppress pop and click
noise
■ Standby mode active low
■ RoHS compliant
Description
The STEVAL-CCA018V1 demonstration board is
designed provide a platform for evaluating the
performance of the TS4657 stereo digital-to
analog-converter (DAC). The TS4657 integrates a
high-performance audio line driver capable of
generating a 2.2 V_RMS output level from a single
3.0 to 5.5 V supply.
A single supply is sufficient for the digital and
analog parts of the circuit, eliminating the need for
external regulators.
The TS4657 is a low consumption device, with
only 22 mW of power dissipation at 3.0 V power
supply during full operation.
A 16-bit multi-bit sigma-delta DAC is used,
operating at 256xFs with over sampling digital
interpolation filters.
STEVAL-CCA018V1
The digital audio data can be 16 to 24-bits long
and sample rates from 32 to 48 kHz are
supported.
The output stage signal is ground-referenced by
using an internal self-generated negative power
supply, so bulky external output coupling
capacitors are not necessary.
October 2009
Doc ID 16593 Rev 1
For further information contact your local STMicroelectronics sales office.
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