Preliminary Technical Data
FEATURES
Stereo, 24-bit analog-to-digital and digital-to-analog converters
DAC SNR: 98 dB (A-weighted), THD: 鈭?0 dB at 48 kHz, 3.3 V
ADC SNR: 90 dB (A-weighted), THD: 鈭?0 dB at 48 kHz, 3.3 V
Highly efficient headphone amplifier
Complete stereo/mono or microphone/line interface
Low power
7 mW stereo playback (1.8 V/1.8 V supplies)
14 mW record and playback (1.8 V/1.8 V supplies)
Low supply voltages
Analog: 1.8 V to 3.6 V
Digital core: 1.8 V to 3.6 V
Digital I/O: 1.8 V/3.6 V
256 f
S
/384 f
S
or USB master clock rate: 12 MHz, 24 MHz
Audio sample rates: 8 kHz,16 kHz, 32 kHz, 44.1 kHz, 48 kHz,
88.2 kHz, and 96 kHz
28-lead, 5 mm 脳 5 mm LFCSP (QFN) package
Low Power Audio Codec
SSM2602
GENERAL DESCRIPTION
The SSM2602 is a low power, high quality stereo audio codec
for portable digital audio applications with stereo programmable
gain amplifier (PGA) line and monaural microphone inputs. It
features two 24-bit analog-to-digital converter (ADC) channels
and two 24-bit digital-to-audio (DAC) converter channels.
The SSM2602 can operate as a master or a slave. It offers
various master clock frequencies, including 12 MHz or 24 MHz
for USB devices; standard 256 f
S
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, 16 kHz, and 8 kHz.
The SSM2602 can operate at power supplies as low as 1.8 V for
the analog circuitry and 1.5 V for the digital circuitry. The
maximum voltage supply is 3.6 V for all supplies.
The SSM2602 software-programmable output options provide
the user with many application options, such as speaker driver,
headphone driver, or both. Its volume control functions provide
a large range of gain control of the audio signal.
The SSM2602 is specified over the industrial temperature range
of 鈭?0擄C to +85擄C. It is available in a 28-lead, 5 mm 脳 5 mm
lead frame chip scale package (LFCSP).
APPLICATIONS
Mobile phones
MP3 players
Portable gaming
Portable electronics
Educational toys
FUNCTIONAL BLOCK DIAGRAM
AVDD
VMID AGND
DBVDD DGND DCVDD
HPVDD PGND
MICBIAS
ATTEN
鈥?4.5dB~+33dB,
1.5dB STEP
BYPASS/MUTE 3dB STEP
6dB~15dB/MUTE 3dB STEP
SSM2602
鈥?3dB~+6dB,
1dB STEP
ATTEN
RHPOUT
RLINEIN
MUX
ADC
DAC
ROUT
MICIN
14dB/34dB
DIGITAL
PROCESSOR
LOUT
MUX
鈥?4.5dB~+33dB,
1.5dB STEP
LLINEIN
ADC
DAC
LHPOUT
ATTEN
ATTEN
CLK
6dB~15dB/MUTE 3dB STEP
BYPASS/MUTE 3dB STEP
鈥?3dB~+6dB,
1dB STEP
DIGITAL AUDIO INTERFACE
CONTROL INTERFACE
MCLK/ XTO CLKOUT
XTI
DACDAT ADCDAT BCLK DACLRC ADCLRC MODE CSB
SDIN SCLK
Figure 1.
Rev. PrB
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
漏2007 Analog Devices, Inc. All rights reserved.
06858-001