CS4461

www.DataSheet4U.com CS4461 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 General Description The CS4461 is a complete analog-to-digital converter for class-D real-time power supply rejection (PSR) feedback. 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 components 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 Demonstration board is also available for device evaluation and implementation suggestions. Please see “Ordering Information” on page 11 for complete details. Conditions (AC and DC) Signal Delay z Filterless Digital Output Resulting in Very Low 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 VQ REFGND PSR_RESET PSR_EN FIL...