providing simplicity in the audio system design. Packaged
minimal PCB space for implementation.
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compatible and I
2
S serial
interfaces
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Dual mic inputs with independent volume
controls
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Digital de-emphasis capability
DAC and ADC SNR >100 dB
Differential Stereo Analog Inputs
28-pin SSOP package
Energy saving dynamic power modes
5V Analog with 3.3V or 5V Digital capability
The STAC9460 provides variable sample rate D-A and
A-D conversion, as well as analog processing. Sup-
ported audio sample rates include 32 kHz, 44.1 kHz,
48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz and 192 kHz.
The digital interface communicates via a standard I
2
C
compatible serial interface and I
2
S digital audio inter-
face. The two variable sample rate ADC's provide
record capability from the microphone inputs or the dif-
ferential inputs. DAC's operate at 24-bit resolution with
the sample rate based on the Master Clock. The ADC
operates at 20-bit resolution and supplys full 24-bit filter
data.The STAC9460 supports three I
2
S digital audio
inputs and an I
2
S digital audio output. These digital I/O
options provide for a number of advance architectural
implementations, with volume controls and mute capa-
bilities built directly into the codec for each individual
channel. The output volume ranges from 0 dB to -
95 dB with .75 dB steps. For MIC input, the input vol-
ume ranges from 0 dB to 22.5 dB with 1.5 dB steps.
The STAC9460 also supports a single-line format.The
STAC9460 is designed primarily to support 6-channel
audio. True AC-3 playback can be achieved for 6-
speaker applications by taking advantage of the
STAC9460 architecture and combining it with the
appropriate processing. This product is ideal for home
theatre, DVD, karaoke, and set-top-box applications.
ORDERING INFORMATION
Part Number
STAC9460S
STAC9462S
Channels
Six
Two
Package
28-pin SSOP
28-pin SSOP
Temperature Range
0
o
C to +70
o
C
0
o
C
SUPPLY RANGE
AVdd = 5V, DVdd = 3.3V or 5V
AVdd = 5V, DVdd = 3.3V or 5V
to +70
o
C
Evaluation Boards: please send email request to apps@sigmatel.com
Note: SigmaTel reserves the right to change specifications without notice.
2-9460-P1-1.0-0801
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