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STw5095
Low Power Asynchronous Stereo Audio Codec with Integrated Power Amplifiers
DATA BRIEF
Features
20 bit audio resolution, 8kHz to 96kHz independent rate ADC and DAC Asynchronous sampling ADC and DAC: they do not require oversampled clock and information on the audio data sampling frequency (fs). Jitter tolerant fs Wide master clock range: from 4MHz to 32MHz I2C/SPI compatible control I/F. Stereo headphones drivers, handsfree loudspeaker driver, line out drivers Mixable analog line inputs Voice filters: 8/16kHz with voice channel filters Automatic gain control for microphone and linein inputs Two programmable master/slave serial audio data interfaces (I2S, SPI, PCM compatible and other formats) Frequency programmable clock outputs Multibit modulators with data weighted averaging ADC and DAC DSP functions for bass-treble-volume control, mute, mono/stereo selection, voice channel filters, de-emphasis filter and dynamic compression. 93 dB dynamic range ADC, 0.001% THD with full scale output @ 2.7V 95 dB dynamic range DAC, 0.02% THD performance @ 2.7V over 16 load
STw5095
TFBGA 5x5 (64 pins)
Selectable stereo differential or single-ended line inputs with 38 dB range programmable gain
Analog output drivers
Stereo headphones outputs driving capability: 40 mW (0.1% THD) over 16 with 40 dB range programmable gain Common mode voltage headphones driver (phantom ground) Balanced loudspeaker output driving capability: up to 500mW (VCCLS>3.5V; 1% THD) over 8 with 30dB range programmable gain Transient supression filter during power up and power down Balanced/unbalanced stereo line outputs driving capability 1k
Appl ication s
Analog inputs
Digital cellular telephones with mp3 player, stereo recorder, fm radio stereo listening and recording functions, live music recording. Portable digital players and recorders.
Selectable stereo differential or single-ended microphone amplifier inputs with 51dB range programmable gain. One microphone biasing output. Microphone plug-in and push-button detection input
October 2005
CD00059404
Rev 1 1/4
www.st.com
4
For further information contact your local STMicroelectronics sales office.
STw5095
Description
STw5095 is a Low Power Asynchronous Stereo Audio CODEC device with Headphones Amplifiers for high quality audio listening and recording. The STw5095 control registers are accessed through a selectable I2C-bus compatible or SPI compatible interface. The STw5095 Asynchronous Stereo Audio Codec is designed to easily fit in most audio systems because it supports an extended master clock range (any value between 4 MHz and 32 MHz) and at the same time it supports any audio data rate (independent in AD and DA paths) from 8 kHz to 48 kHz and from 88 kHz to 96 kHz, moreover it can tolerate jitter on audio data without degrading performance. The audio data serial interfaces (for AD and DA) can be Master or Slave, are I2S compatible and they support other formats that can easily interface to standard serial ports. The two audio interfaces can be used as a single bidirectional interface. Two frequency programmable Clock Sources are available to generate the master clock for the audio sub-system of other devices. The internal D to A and A to D converters work with up to 24 bit resolution. The supply voltage can be the same for the whole device, in the range 2.4 V to 2.7 V, or it can be differentiated for digital (VCC: 1.8 V to 2.7 V), analog (VCCA: 2.4 V to 3.3 V) and loudspeaker driver (VCCLS: VCCA to 5.5 V) to obtain best performance and maximum power to the loudspeaker (up to 500 mW). STw5095 has multiple analog mixable inputs and outputs. It can directly drive Stereo Headphones without external capacitors and it has a Loudspeaker driver that can also be used for monophonic group listening. Stereo differential and single ended microphones, auxiliary line in stereo and mono signals can be mixed and connected to the ADC or directly to the drivers, mixed also with DAC audio signals. STw5095 Stereo Audio Codec main applications include multimedia handheld devices such as cellular phones with added low-power high-quality MP3 and/ or FM radio listening/recording features, or any battery powered equipment such as PDAs, Camcorders, etc. that require Stereo Audio Codec with Headphones drivers.
Order codes
Part Number STw5095 STw5095T Details TFBGA 64 Tray TFBGA 64 Tape and Reel
2/4
CD00059404
STw5095
V CC A
G NDA
VCCP
VCCLS
GNDP
G ND CM
VCC
GND
VCCIO
MICLP LINSEL I RQ Gen IRQ
MICLN
MICRP Headset Detection HDET
Stereo Diff.
MICRN LIN L-R Amp s Stereo Path R L
AGC (from DSP) LINLG LINRG -20:+18 dB Step 2
AUX1L
AUX1R
Stereo Sing.E.
LINEIN AUX1 AUX2 AUX3 MU TE
STw5095
AGC (from DSP) Power-On Reset Registers Control Logic Control I/F
AUX2PL
SDA/SDIN SCLK AS/CSB CMOD
AUX2NL MI CSE L
AUX2PR MICLG MIC R G 0÷39 dB Step 1.5 MICLA MIC R A -12÷0 dB Step 1.5 ADLIN L R AD Sample Rate Converter ADC
Stereo Diff.
AUX2NR
AUX3L MIC L-R Pre Amp s
Functional block diagram
AUX3R
Stereo Sing.E.
Stereo ADC
LINEINR
LINEINL
Stereo Sing.E.
MI C AUX1 AUX2 AUX3 MU TE
AD_DATA
CAPMIC
CAPLINEIN ADRTOL
Co mm . Mode
DSP
ADMONO Digital AD-PLL Filter Audio/Voice
Audio AD-I/F
AD_CK AD_SYNC
AD_SYNC
ADMIC
MBIAS ADC Digital Gain
Mic. Bia s
2.1V Reference
AGC (Mic&Lin)
CK Gen/ Master Mode
AD_OCK
LOG: -18:0 dB Step 3 Oscillator MI CLO Bandgap
HPLG DA_SYNC Voltage Reference -40:0 dB Step 2 Analog Filter DA C MIXDAC Trans ient Suppr. Filter Modulator
MIXMIC
MIXLIN
CD00059404
AD to DA Mixing Gain (sidetone) CurrentBias -40:0 dB Step 2 Trans ient Suppr. Filter R L Filter Audio/Voice Digital DA -PL L DA C Digital Gain DA Sample Rate Converter
OLP
OLN
Left LineOut
MC K DA to AD M i xi n g Gain
(Audio Only)
PLL
AMCK
ORP
ORN
Right LineOut
Bass Treble
(Audio only)
DA _O CK Dyn.Comp. CK Gen/ Master Mode
HP L
Left Driver
VCMHP
CM Driver
DAMONO Audio DA-I/F
DA_SYNC DA_CK DA_DATA
V CM HP S
HP R
Right Driver
HP RG
LSPS
Stereo DAC
LSP
CAPLS
Mono Driver
LSN
LSG -24:6 dB Step 2 Trans ient Suppr. Filter LSSEL L (L+R)/2 R
LSNS
3/4
STw5095
Revision history
Date 3-Oct-2005 Revision 1 Initial release. Changes
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners 2005 STMicroelectronics - All rights reserved STMicroelectronics group of companies Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America www.st.com
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CD00059404
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