SSM2603 Datasheet, PDF (1/32 Pages) Analog Devices – Low Power Audio Codec

Low Power Audio Codec
SSM2603
FEATURES
GENERAL DESCRIPTION
Stereo, 24-bit analog-to-digital and digital-to-analog converters
DAC SNR: 100 dB (A-weighted), THD: −80 dB at 48 kHz, 3.3 V
ADC SNR: 90 dB (A-weighted), THD: −80 dB at 48 kHz, 3.3 V
Highly efficient headphone amplifier
Stereo line input and monaural microphone input
Low power
7 mW stereo playback (1.8 V/1.5 V supplies)
14 mW record and playback (1.8 V/1.5 V supplies)
Low supply voltages
Analog: 1.8 V to 3.6 V
Digital core: 1.5 V to 3.6 V
Digital I/O: 1.8 V to 3.6 V
256/384 oversampling rate in normal mode; 250/272 over-
sampling rate in USB mode
Audio sampling rates: 8 kHz, 11.025 kHz, 12 kHz, 16 kHz,
22.05 kHz, 24 kHz, 32 kHz, 44.1 kHz, 48 kHz, 88.2 kHz,
and 96 kHz
28-lead, 5 mm × 5 mm LFCSP (QFN) package
APPLICATIONS
Mobile phones
MP3 players
Portable gaming
Portable electronics
Educational toys
The SSM2603 is a low power, high quality stereo audio codec
for portable digital audio applications with one set of stereo
programmable gain amplifier (PGA) line inputs and one
monaural microphone input. It features two 24-bit analog-to-
digital converter (ADC) channels and two 24-bit digital-to-
analog (DAC) converter channels.
The SSM2603 can operate as a master or a slave. It supports
various master clock frequencies, including 12 MHz or 24 MHz
for USB devices; standard 256 fS or 384 fS based rates, such as
12.288 MHz and 24.576 MHz; and many common audio sampling
rates, such as 96 kHz, 88.2 kHz, 48 kHz, 44.1 kHz, 32 kHz, 24 kHz,
22.05 kHz, 16 kHz, 12 kHz, 11.025 kHz, and 8 kHz.
The SSM2603 can operate at power supplies as low as 1.8 V for
the analog circuitry and as low as 1.5 V for the digital circuitry.
The maximum voltage supply is 3.6 V for all supplies.
The SSM2603 software-programmable stereo output options
provide the user with many application possibilities because the
device can be used as a headphone driver or as a speaker driver.
Its volume control functions provide a large range of gain
control of the audio signal.
The SSM2603 is specified over the industrial temperature range
of −40°C to +85°C. It is available in a 28-lead, 5 mm × 5 mm
lead frame chip scale package (LFCSP).
FUNCTIONAL BLOCK DIAGRAM
AVDD VMID AGND
DBVDD DGND DCVDD
HPVDD PGND
MICBIAS
–34.5dB TO +33dB,
1.5dB STEP
RLINEIN
MUX
MICIN
0dB/20dB/
40dB BOOST
LLINEIN
–34.5dB TO +33dB,
1.5dB STEP
MUX
BYPASS
SIDETONE
6dB TO 15dB/MUTE 3dB STEP
ADC
DIGITAL
PROCESSOR
ADC
DAC
DAC
SIDETONE
BYPASS
6dB TO 15dB/MUTE 3dB STEP
SSM2603
–73dB TO +6dB,
1dB STEP
RHPOUT
ROUT
LOUT
LHPOUT
–73dB TO +6dB,
1dB STEP
CLK
DIGITAL AUDIO INTERFACE
CONTROL INTERFACE
MCLK/ XTO CLKOUT
XTI
PBDAT RECDAT BCLK PBLRC RECLRC MUTE CSB SDIN SCLK
Figure 1.
Rev. 0
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