Datasheet SSM2604 (Analog Devices)

Low Power Audio Codec Data Sheet SSM2604 FEATURES GENERAL DESCRIPTION Stereo, 24-bit analog-to-digital and digital-to-analog converters
The SSM2604 is a low power, high quality stereo audio codec
DAC SNR: 100 dB (A-weighted), THD: −80 dB at 48 kHz, 3.3 V
for portable digital audio applications with one set of stereo
ADC SNR: 90 dB (A-weighted), THD: −80 dB at 48 kHz, 3.3 V
programmable gain amplifier (PGA) line inputs. It features two
Stereo line inputs
24-bit analog-to-digital converter (ADC) channels and two
Low power
24-bit digital-to-analog (DAC) converter channels.
7 mW stereo playback (1.8 V/1.5 V supplies)
The SSM2604 can operate as a master or a slave. It supports
14 mW record and playback (1.8 V/1.5 V supplies)
various master clock frequencies, including 12 MHz or 24 MHz
Low supply voltages
for USB devices; standard 256 f
Analog: 1.8 V to 3.6 V
S or 384 fS based rates, such as 12.288 MHz and 24.576 MHz; and many common audio sam-
Digital: 1.5 V to 3.6 V
pling rates, such as 96 kHz, 88.2 kHz, 48 kHz, 44.1 kHz, 32 kHz,
256/384 oversampling rate in normal mode;
24 kHz, 22.05 kHz, 16 kHz, 12 kHz, 11.025 kHz, and 8 kHz.
250/272 oversampling rate in USB mode Audio sampling rates: 8 kHz, 11.025 kHz, 12 kHz, 16 kHz,
The SSM2604 can operate at power supplies as low as 1.8 V for
22.05 kHz, 24 kHz, 32 kHz, 44.1 kHz, 48 kHz, 88.2 kHz,
the analog circuitry and as low as 1.5 V for the digital circuitry.
and 96 kHz
The maximum voltage supply is 3.6 V for all supplies.
20-lead, 4 mm × 4 mm LFCSP (QFN) package
The SSM2604 is specified over the industrial temperature range
APPLICATIONS
of −40°C to +85°C. It is available in a 20-lead, 4 mm × 4 mm lead frame chip scale package (LFCSP).
Mobile phones MP3 players Portable gaming Portable electronics Educational toys FUNCTIONAL BLOCK DIAGRAM AVDD VMID AGND DVDD DGND SSM2604 BYPASS –34.5dB TO +33dB, 1.5dB STEP RLINEIN ADC DAC ROUT DIGITAL PROCESSOR LLINEIN ADC DAC LOUT –34.5dB TO +33dB, 1.5dB STEP BYPASS CLK DIGITAL AUDIO INTERFACE CONTROL INTERFACE
001
MCLK/ XTO CLKOUT PBDAT RECDAT BCLK PBLRC RECLRC SDIN SCLK XTI
06978- Figure 1.
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Document Outline Features Applications General Description Functional Block Diagram Revision History Specifications Digital Filter Characteristics Timing Characteristics Absolute Maximum Ratings Thermal Resistance ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Converter Filter Response Digital De-Emphasis Theory of Operation Digital Core ADC and DAC ADC High-Pass and DAC De-Emphasis Filters Analog Interface Signal Chain Stereo Line Inputs Bypass Path to Output Line Outputs Digital Audio Interface Recording Mode Playback Mode Digital Audio Data Sampling Rate Software Control Interface Control Register Sequencing Typical Application Circuits Register Map Register Map Details Left-Channel ADC Input Volume, Address 0x00 Right-Channel ADC Input Volume, Address 0x01 Analog Audio Path, Address 0x04 Digital Audio Path, Address 0x05 Power Management, Address 0x06 Power Consumption Digital Audio I/F, Address 0x07 Sampling Rate, Address 0x08 Active, Address 0x09 Software Reset, Address 0x0F Outline Dimensions Ordering Guide