Motor de Búsqueda de Datasheet de Componentes Electrónicos
  Spanish  ▼
ALLDATASHEET.ES

X  

CS4225 Datasheet(PDF) 11 Page - Cirrus Logic

No. de pieza CS4225
Descripción Electrónicos  Digital Audio Conversion System
Download  30 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricante Electrónico  CIRRUS [Cirrus Logic]
Página de inicio  http://www.cirrus.com
Logo CIRRUS - Cirrus Logic

CS4225 Datasheet(HTML) 11 Page - Cirrus Logic

Back Button CS4225 Datasheet HTML 7Page - Cirrus Logic CS4225 Datasheet HTML 8Page - Cirrus Logic CS4225 Datasheet HTML 9Page - Cirrus Logic CS4225 Datasheet HTML 10Page - Cirrus Logic CS4225 Datasheet HTML 11Page - Cirrus Logic CS4225 Datasheet HTML 12Page - Cirrus Logic CS4225 Datasheet HTML 13Page - Cirrus Logic CS4225 Datasheet HTML 14Page - Cirrus Logic CS4225 Datasheet HTML 15Page - Cirrus Logic Next Button
Zoom Inzoom in Zoom Outzoom out
 11 / 30 page
background image
46.5dB of gain in 1.5dB steps. The gain is ad-
justable only by software control. Level changes
only take effect on zero crossings to minimize
audible artifacts. If there is no zero crossing,
then the requested level change will occur after a
time-out of 511 frames (10.6ms at 48kHz frame
rate). There is a separate zero crossing detector
for each channel.
Analog Outputs
Line Level Outputs
AOUT1, AOUT2, AOUT3 and AOUT4 output a
1Vrms level for full scale, centered around
+2.1V. Figure 1 shows the recommended 1.0
µF
dc blocking capacitor with a 40k
Ω resistor to
ground. When driving impedances greater than
10k
Ω, this provides a high pass corner of 20Hz.
These outputs may be muted.
Output Level Attenuator
The DAC outputs are each routed through an at-
tenuator, which is adjustable in 1dB steps.
Output attenuation is available via software con-
trol only. Level changes are implemented such
that the noise is attenuated by the same amount
as the signal (equivalent to using an analog at-
tenuator after the signal source), until the
residual output noise is equal to the noise floor
in the mute state. Level changes only take effect
on zero crossings to minimize audible artifacts.
If there is no zero crossing, then the requested
level change will occur after a time-out of 511
frames (10.6ms at 48kHz frame rate). There is a
separate zero crossing detector for each channel.
Each output can be independently muted via
mute control bits. In addition, the CS4225 has an
optional mute on consecutive zeros feature,
where each DAC output will mute if it receives
512 consecutive zeros. A single non-zero value
will unmute the DAC output.
ADC and DAC Coding
The CS4225 converters use 2’s complement cod-
ing. Table 1 shows the ADC and DAC transfer
functions.
Calibration
Both output offset voltage and input offset error
are minimized by an internal calibration cycle.
At least one calibration cycle must be invoked
after power up. A calibration will occur any time
the part comes out of reset, including the power-
up reset. For the most accurate calibration, some
time must be allowed between powering up the
CS4225, or exiting the power-down state, and in-
itiating a calibration cycle, to allow the voltage
reference to settle. This is achieved by holding
RST/PDN low for at least 50ms after power up
or exiting power-down mode. Input offset error
will be calibrated for all inputs and outputs.
A calibration takes 192 frames to complete,
based on the frequency of the VCO of the inter-
16-bit ADC/DAC
12-bit ADC
Input/
2’s
2’s
Input
Output
Complement
Complement Voltage*
Voltage*
Code
Code
+1.400000
7FFF
7FF
+1.40000
+1.399957
7FFE
7FE
+139864
+0.000064
0001
001
+0.00204
+0.000021
0000
000
+0.00068
-0.000021
FFFF
FFF
-0.00068
-0.000064
FFFE
FFE
-0.00204
-1.399957
8001
801
-1.39864
-1.400000
8000
800
-1.40000
*Nominal voltage relative to CMOUT (Typ 2.1V), no
gain or attenuation. Actual measured voltage will be
modified by the gain error and offset error specifica-
tions.
Table 1 - ADC/DAC Input and Output Coding Table
CS4225
DS86PP8
11


Número de pieza similar - CS4225

Fabricante ElectrónicoNo. de piezaDatasheetDescripción Electrónicos
logo
Cirrus Logic
CS4220 CIRRUS-CS4220 Datasheet
770Kb / 32P
   24-Bit Stereo Audio Codec with 3V Interface
CS4220-KS CIRRUS-CS4220-KS Datasheet
770Kb / 32P
   24-Bit Stereo Audio Codec with 3V Interface
CS4221 CIRRUS-CS4221 Datasheet
770Kb / 32P
   24-Bit Stereo Audio Codec with 3V Interface
CS4221-KS CIRRUS-CS4221-KS Datasheet
770Kb / 32P
   24-Bit Stereo Audio Codec with 3V Interface
CS4222 CIRRUS-CS4222 Datasheet
580Kb / 26P
   20-Bit Stereo Audio Codec with Volume Control
More results

Descripción similar - CS4225

Fabricante ElectrónicoNo. de piezaDatasheetDescripción Electrónicos
logo
NXP Semiconductors
SAA7366 PHILIPS-SAA7366 Datasheet
114Kb / 20P
   Bitstream conversion ADC for digital audio systems
May 1994
SAA7360 PHILIPS-SAA7360 Datasheet
101Kb / 20P
   Bitstream conversion ADC for digital audio systems
1995 Apr 24
SAA7367 PHILIPS-SAA7367 Datasheet
113Kb / 20P
   Bitstream conversion ADC for digital audio systems
1998 Nov 17
logo
Richtek Technology Corp...
RT9107B RICHTEK-RT9107B Datasheet
641Kb / 42P
   Dual-Channel Digital Audio System
logo
STMicroelectronics
STA323W STMICROELECTRONICS-STA323W_06 Datasheet
811Kb / 71P
   2.1 high efficiency digital audio system
logo
NXP Semiconductors
SAA7220 PHILIPS-SAA7220 Datasheet
247Kb / 20P
   DIGITAL FILTER FOR COMPACT DISC DIGITAL AUDIO SYSTEM
September 1985
logo
STMicroelectronics
STA328 STMICROELECTRONICS-STA328 Datasheet
409Kb / 41P
   2.1 HIGH EFFICIENCY DIGITAL AUDIO SYSTEM
STA323W STMICROELECTRONICS-STA323W Datasheet
782Kb / 41P
   2.1 HIGH EFFICIENCY DIGITAL AUDIO SYSTEM
STA326 STMICROELECTRONICS-STA326 Datasheet
1Mb / 43P
   2.1 HIGH EFFICIENCY DIGITAL AUDIO SYSTEM
logo
ATMEL Corporation
ATR4255P ATMEL-ATR4255P Datasheet
386Kb / 34P
   FM Double-conversion System
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30


Datasheet Descarga

Go To PDF Page


Enlace URL




Política de Privacidad
ALLDATASHEET.ES
¿ALLDATASHEET es útil para Ud.?  [ DONATE ] 

Todo acerca de Alldatasheet   |   Publicidad   |   Contáctenos   |   Política de Privacidad   |   Intercambio de Enlaces   |   Lista de Fabricantes
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com