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參數資料
型號: CS4461-DZZR
廠商: CIRRUS LOGIC INC
元件分類: ADC
英文描述: Multi-Bit A/D for Class-D Real-Time PSR Feedback
中文描述: 1-CH DELTA-SIGMA ADC, PDSO24
封裝: 4.40 MM, TSSOP-24
文件頁數: 1/11頁
文件大?。?/td> 254K
代理商: CS4461-DZZR
Copyright
Cirrus Logic, Inc. 2005
(All Rights Reserved)
http://www.cirrus.com
Multi-Bit A/D for Class-D Real-Time PSR Feedback
Features
z
Advanced Multi-bit Delta-Sigma Architecture
z
Real-time Feedback of Power Supply
Conditions (AC and DC)
z
Filterless Digital Output Resulting in Very Low
Signal Delay
z
135 mW Power Consumption
z
Supports Logic Levels Between 3.3 V and
5.0 V
z
Differential Analog Architecture
z
Modulator Overflow Detection
z
Interfaces Directly to the CS44800/CS44600
Class-D PWM Modulator
z
Multi-bit Conversion at up to 7.5 MHz
z
Delivers Modulated Data Over 2-Wire Interface
General Description
The CS4461 is a complete analog-to-digital converter
for class-D real-time power supply rejection (PSR) feed-
back. It performs sampling and analog-to-digital
conversion, generating digital data for input to a
class-D modulator with real-time PSR feedback
capabilities.
The CS4461 uses a 5th-order, multi-bit delta-sigma
modulator followed by output data formatting. The ADC
uses a differential architecture which provides excellent
noise rejection.
The CS4461 feeds back the AC and DC voltage compo-
nents and is ideal for class-D audio systems requiring
high power supply rejection.
The CS4461 is available in a 24-pin TSSOP package in
both Commercial (-10° to +70° C) and Automotive
grade (-40° to +85° C). The CDB44800 Customer Dem-
onstration board is also available for device evaluation
and implementation suggestions. Please see
“Ordering
Information” on page 11
for complete details.
Voltage Reference
REFGND
AIN-
AIN+
FILT+
PSR_DATA
PSR_SYNC
5.0 V
(VA)
GND
VQ
PSR_MCLK
S/H
+
-
LP Filter
Σ
DAC
Output Data
Formatting
3.3 V to 5.0 V
(VDP)
PSR_EN
OVERFLOW
PSR_RESET
SEPTEMBER '05
DS650F1
CS4461
相關PDF資料
PDF描述
CS4461 Multi-Bit A/D for Class-D Real-Time PSR Feedback
CS4461-CZZ Multi-Bit A/D for Class-D Real-Time PSR Feedback
CS4461-DZZ Multi-Bit A/D for Class-D Real-Time PSR Feedback
CS44800-CQZR 8-Channel Digital Amplifier Controller
CS44800-DQZR 8-Channel Digital Amplifier Controller
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