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PDF SSM2604 Datasheet ( Hoja de datos )

Número de pieza SSM2604
Descripción Low Power Audio Codec
Fabricantes Analog Devices 
Logotipo Analog Devices Logotipo

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SSM2604 Hoja de datos, Descripción, Manual
Data Sheet
Low Power Audio Codec
SSM2604
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
Stereo line inputs
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: 1.5 V to 3.6 V
256/384 oversampling rate in normal mode;
250/272 oversampling 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
20-lead, 4 mm × 4 mm LFCSP (QFN) package
APPLICATIONS
Mobile phones
MP3 players
Portable gaming
Portable electronics
Educational toys
The SSM2604 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. It features two
24-bit analog-to-digital converter (ADC) channels and two
24-bit digital-to-analog (DAC) converter channels.
The SSM2604 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 sam-
pling 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 SSM2604 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 SSM2604 is specified over the industrial temperature range
of −40°C to +85°C. It is available in a 20-lead, 4 mm × 4 mm
lead frame chip scale package (LFCSP).
FUNCTIONAL BLOCK DIAGRAM
AVDD VMID AGND
DVDD DGND
BYPASS
SSM2604
–34.5dB TO +33dB,
1.5dB STEP
RLINEIN
ADC
DAC
ROUT
DIGITAL
PROCESSOR
LLINEIN
–34.5dB TO +33dB,
1.5dB STEP
ADC
DAC
LOUT
CLK
BYPASS
DIGITAL AUDIO INTERFACE
CONTROL INTERFACE
MCLK/ XTO CLKOUT
XTI
PBDAT RECDAT BCLK PBLRC RECLRC SDIN
Figure 1.
SCLK
Rev. A
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevices for itsuse,nor foranyinfringementsofpatentsor 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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©2008–2013 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com

1 page

SSM2604 pdf
SSM2604
DIGITAL FILTER CHARACTERISTICS
Table 2.
Parameter
ADC FILTER
Pass Band
Min
0
Pass-Band Ripple
Stop Band
Stop-Band Attenuation
High-Pass Filter Corner Frequency
0.555 fS
−61
DAC FILTER
Pass Band
Pass-Band Ripple
Stop Band
Stop-Band Attenuation
CORE CLOCK TOLERANCE
Frequency Range
Jitter Tolerance
0
0.555 fS
−61
8.0
Typ
0.5 fS
3.7
10.4
21.6
0.5 fS
50
Data Sheet
Max
0.445 fS
±0.04
0.445 fS
±0.04
13.8
Unit
Hz
Hz
dB
Hz
dB
Hz
Hz
Hz
Hz
Hz
dB
Hz
dB
MHz
ps
Conditions
±0.04 dB
−6 dB
f > 0.567 fS
−3 dB
−0.5 dB
−0.1 dB
±0.04 dB
−6 dB
f > 0.565 fS
Rev. A | Page 4 of 28

5 Page

SSM2604 arduino
SSM2604
DIGITAL DE-EMPHASIS
0
−1
−2
−3
−4
−5
−6
−7
−8
−9
−10
0 4 8 12 16
FREQUENCY (kHz)
Figure 11. De-Emphasis Frequency Response, Audio Sampling Rate = 32 kHz
0.4
0.3
0.2
0.1
0
−0.1
−0.2
−0.3
−0.4
0 4 8 12 16
FREQUENCY (kHz)
Figure 12. De-Emphasis Error, Audio Sampling Rate = 32 kHz
0
−1
−2
−3
−4
−5
−6
−7
−8
−9
−10
0 4 8 12 16 20
FREQUENCY (kHz)
Figure 13. De-Emphasis Frequency Response, Audio Sampling Rate = 44.1 kHz
Data Sheet
0.4
0.3
0.2
0.1
0
−0.1
−0.2
−0.3
−0.4
0 4 8 12 16 20
FREQUENCY (kHz)
Figure 14. De-Emphasis Error, Audio Sampling Rate = 44.1 kHz
0
−1
−2
−3
−4
−5
−6
−7
−8
−9
−10
0 4 8 12 16 20 24
FREQUENCY (kHz)
Figure 15. De-Emphasis Frequency Response, Audio Sampling Rate = 48 kHz
0.4
0.3
0.2
0.1
0
−0.1
−0.2
−0.3
−0.4
0 4 8 12 16 20 24
FREQUENCY (kHz)
Figure 16. De-Emphasis Error, Audio Sampling Rate = 48 kHz
Rev. A | Page 10 of 28

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