P R O D U C T B R I E F
STAC9460/62
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Two and Six-Channel 24-Bit, 192 kHz Audio Codec
OVERVIEW
DESCRIPTION
Two and six channel general purpose 24-bit, full duplex, SigmaTel’s STAC9460/62 are six and two-channel general-
audio codec for use in consumer applications.
purpose 24-bit, full duplex, audio codecs for use in con-
sumer applications. The STAC9460/62 incorporate Sigma-
Tel’s proprietary Sigma-Delta technology to achieve ADC
and DAC SNRs in excess of 100 dB. The DACs, and
ADCs are integrated with analog I/Os, which include two
differential analog and two MIC inputs. There are three
audio I2S inputs and an I2S digital output. The STAC9460/
62 communicates via a standard two-wire serial interface
providing simplicity in the audio system design. Packaged
in a 28-pin SSOP, the STAC9460 and STAC9462 require
minimal PCB space for implementation.
FEATURES
High performance Σ∆ technology
Two or six channels with independent
volume controls
24-bit full duplex stereo DACs
20-bit full duplex stereo ADC
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 I2C
compatible serial interface and I2S 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 I2S digital audio
inputs and an I2S 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.
32, 44.1, 48, 88.2, 96, 176.4 and 192 kHz
DAC sample rates
32, 44.1, 48, 88.2 and 96 kHz ADC sample
rates
Standard I2C compatible and I2S serial
interfaces
Dual mic inputs with independent volume
controls
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
ORDERING INFORMATION
Part Number
Channels
Package
Temperature Range
SUPPLY RANGE
STAC9460S
STAC9462S
Six
28-pin SSOP
28-pin SSOP
0 oC to +70 oC
0 oC to +70 oC
AVdd = 5V, DVdd = 3.3V or 5V
AVdd = 5V, DVdd = 3.3V or 5V
Two
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