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TS4657IQT Datasheet(PDF) 1 Page - STMicroelectronics

Part # TS4657IQT
Description  Single supply stereo digital audio line driver with 2.2 Vrms capless outputs
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TS4657IQT Datasheet(HTML) 1 Page - STMicroelectronics

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March 2009
Rev 1
1/26
26
TS4657
Single supply stereo digital audio line driver
with 2.2 Vrms capless outputs
Features
Single 3.0 to 5.5 V supply for DAC and line
driver
Audio line output: 2.2 Vrms for all VCC 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, VCC =5 V
7.4 mA current consumption at VCC =3.0 V,
full operation
Internal negative power supply to ensure
ground-referenced, capless outputs
No external capacitor needed for the negative
power supply generation
Integrated structure to suppress pop and click
noise
Available in thin QFN20 4 mm x 4 mm package
Applications
Digital set-top boxes
DVD players
Digital TVs
Notebooks
Portable audio equipment
Sound cards
Description
The TS4657 is a stereo DAC that integrates a
high-performance audio line driver capable of
generating a 2.2 Vrms output level from a single
3.0 to 5.5 V supply.
One single supply is sufficient for the digital and
analog parts of the circuit, thus eliminating the
need for external regulators.
The TS4657 is a low-power consumption device.
It features only 22 mW power dissipation at a
3.0 V power supply in full operation.
A 16-bit multi-bit sigma delta DAC is used,
operating at 256xFs with oversampling digital
interpolation filters. The digital audio data can be
16-to 24-bit 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, and as such external bulky output
coupling capacitors are not necessary.
The TS4657 is packaged in a small 4 x 4 mm
QFN20 package, ideal for portable applications.
Pin connections (top view)
GNDD
NC
LRCLK
SDAT
BCLK
GNDA
VREGA
VCCA
VOUTL
VOUTR
1
5
20
16
15
11
10
6
GNDD
NC
LRCLK
SDAT
BCLK
GNDA
VREGA
VCCA
VOUTL
VOUTR
1
5
1
1
5
5
20
16
20
20
16
15
11
15
15
11
11
10
6
10
10
6
6
www.st.com


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