データシートサーチシステム
  Japanese  ▼
ALLDATASHEET.JP

X  

CS4225-YU データシート(PDF) 10 Page - Cirrus Logic

部品番号 CS4225-YU
部品情報  Digital Audio Conversion System
Download  30 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
メーカー  CIRRUS [Cirrus Logic]
ホームページ  http://www.cirrus.com
Logo CIRRUS - Cirrus Logic

CS4225-YU データシート(HTML) 10 Page - Cirrus Logic

Back Button CS4225-YU Datasheet HTML 6Page - Cirrus Logic CS4225-YU Datasheet HTML 7Page - Cirrus Logic CS4225-YU Datasheet HTML 8Page - Cirrus Logic CS4225-YU Datasheet HTML 9Page - Cirrus Logic CS4225-YU Datasheet HTML 10Page - Cirrus Logic CS4225-YU Datasheet HTML 11Page - Cirrus Logic CS4225-YU Datasheet HTML 12Page - Cirrus Logic CS4225-YU Datasheet HTML 13Page - Cirrus Logic CS4225-YU Datasheet HTML 14Page - Cirrus Logic Next Button
Zoom Inzoom in Zoom Outzoom out
 10 / 30 page
background image
FUNCTIONAL DESCRIPTION
Overview
The CS4225 has 2 channels of 16-bit analog-to-
digital conversion and 4 channels of 16-bit
digital-to-analog conversion. An auxiliary 12-bit
ADC is also provided. The ADCs and the DACs
are delta-sigma type converters. The ADC inputs
have adjustable input gain, while the DAC out-
puts have adjustable output attenuation.
Digital audio data for the DACs and from the
ADCs is communicated over a serial port. Sepa-
rate pins for input and output data are provided,
allowing concurrent writing to and reading from
the device. Control for the functions available on
the CS4225 are communicated over a serial mi-
crocontroller style interface, or may be set via
dedicated mode pins. Figure 1 shows the recom-
mended connection diagram for the CS4225.
Analog Inputs
Line Level Inputs
AIN1R, AIN1L, AIN2R, AIN2L, AIN3R, AIN3L
and AINAUX are the line level input pins (See
Figure 1). These pins are internally biased to the
CMOUT voltage (nominally 2.1V). A 1
µF DC
blocking capacitor allows signals centered
around 0V to be input. Figure 2 shows an op-
tional dual op amp buffer which combines level
shifting with a gain of 0.5 to attenuate the stand-
ard line level of 2Vrms to 1Vrms. The CMOUT
reference level is used to bias the op amps to
approximately one half the supply voltage.
Series DC blocking capacitors eliminate the con-
tribution of signal offset to the A/D converters.
The CS4225 offset calibration scheme yields
minimum DC offset values assuming that the in-
puts are AC coupled (DC blocking capacitor
present). If a DC blocking capacitor is not used,
a greater DC offset will occur. This offset could
be as high as + 70 codes, with no gain.
The input pair for the 16-bit ADCs is selected by
IS0 and IS1, which are accessible in the Input
Selection Byte in software mode or dedicated
pins in the hardware mode. Antialiasing filters
follow the input mux, providing antialiasing for
the input channels. These filters consist of inter-
nal resistors and external capacitors attached to
the CR and CL pins. The CR and CL capacitors
must be low voltage coefficient type, such as
NPO.
The analog signal is input to the 12-bit ADC via
the AINAUX pin. An antialiasing filter of 150
with 0.01
µF to ground is required (See Figure 1)
along with a series DC blocking capacitor. The
AINAUX signal is normally routed to the 12-bit
ADC. This signal may also be routed to the Left
16-bit ADC (replacing the selected left input),
under control of the AIM bit in the 12-bit ADC
Mode Byte. In this mode, the input antialiasing
filters and gain adjustment operates on the
AINAUX signal.
Adjustable Input Gain
The signals from the line inputs are routed to a
programmable gain circuit which provides up to
+
_
56 pF
10 k
20 k
+
_
10 k
56 pF
5 k
20 k
Line In
Line In
Right
Left
CMOUT
AINxR
AINxL
Example
Op-Amps
are
MC34074
0.47 uF
1.0 uF
0.47 uF
1.0 uF
1.0 uF
1.0 uF
Op-amps are run
from VA+ (+5V)
and AGND.
Figure 2 - Optional Line Input Buffer
CS4225
10
DS86PP8


同様の部品番号 - CS4225-YU

メーカー部品番号データシート部品情報
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

同様の説明 - CS4225-YU

メーカー部品番号データシート部品情報
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


データシート ダウンロード

Go To PDF Page


リンク URL




プライバシーポリシー
ALLDATASHEET.JP
ALLDATASHEETはお客様のビジネスに役立ちますか?  [ DONATE ] 

Alldatasheetは   |   広告   |   お問い合わせ   |   プライバシーポリシー   |   リンク交換   |   メーカーリスト
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