CS4265 1.8 V to 5 V Reset 5.0 mm • Complete stereo CODEC • Integrated 192 kHz S/ PDIF transmitter • 24-bit conversion, up to 192 kHz sample rates • Advanced multi-bit Delta-Sigma architecture • 105 dB dynamic range • –95 dB THD+N • 2:1 analog input multiplexer • PGA: ±12 dB gain, 0.5 dB step sizes with zero crossing • Microphone pre-amp with +32 dB gain and low-noise bias supply • Digital volume control • Popguard technology reduces output clicks and pops • Single-ended architecture • +3.3 V or +5.0 V power supply operation • Integrated level shifters for direct interface to DSP or µC • Overflow detection • HPF with defeat • 32-pin QFN (5 x 5), lead-free assembly • CS4265 CODEC price: $3.20 (10K) PCM Serial Interface / Loopback Volume Control Multibit Modulator Switched Capacitor DAC and Filter Left DAC Output Interpolation Filter Multibit Modulator Switched Capacitor DAC and Filter Transmitter Output Internal Voltage Reference High Pass Filter Linear Phase Anti-Alias Filter Multibit Oversampling ADC Multibit Oversampling ADC Microphone Bias Mic Bias +32 dB PGA Mic Input 1&2 MUX Linear Phase Anti-Alias Filter Mute Control Right DAC Output IEC60958-3 Transmitter High Pass Filter 5.0 mm IC dimensions (nominal ) High-End Performance at an Affordable Price Interpolation Filter 3.3 V to 5 V Mute Control Register Configuration I2C/SPI Control Data Level Translator Serial Audio Output Volume Control Level Translator Serial Audio Input 3.3 V to 5 V +32 dB Stereo Line Input PGA New Highly Integrated Stereo CODEC with S/PDIF Output Provides Premium Audio Performance Innovative Design Integrates 5 Chips Into 1 to Deliver Lower BOM Cost The new CS4265 stereo CODEC advances CS4265 operates from either a +3.3 V or +5 V the Cirrus Logic mixed-signal audio IC portfolio power supply and has +1.8 V to +5 V logic and provides an integrated, small, and cost- power supplies for the control and serial port to effective solution — enabling designers to allow for direct interface to external processors deliver precisely what manufacturers need to or micro-controllers without level shifting. get premium audio products to market fast. A synchronous S/PDIF (IEC60958-3) digital The CS4265 features an integrated front-end audio transmitter is integrated to provide addi- with 2:1 input multiplexer and programmable tional design flexibility and lower system cost. gain amplifier capable of ±12 dB analog gain in 0.5 dB step sizes with zero crossing, click-free transitions to maintain sonic quality. One pair of inputs has a dedicated microphone pre-amplifier in its path that provides +32 dB of gain, and there is also a low-noise microphone bias supply available. Engineered for performance, this new CODEC delivers professional audio quality at a breakthrough price point. Applications • DVD recorders • DVD receivers The stereo A/D and D/A conversion is based on a multi-bit Delta-Sigma architecture and supports 24-bit conversion and sample rates up to 192 kHz. Single-ended inputs and outputs are offered, and the outputs feature Cirrus Logic’s Popguard technology to eliminate power cycling clicks and pops, further reducing the number of external components required. The • Digital video recorders/personal video recorders • Digital televisions • Set-top boxes and home media centers • Automotive entertainment systems • Notebook computers • PC sound cards www.cirrus.com C i r r u s L o g i c , I n c . · 2 9 0 1 V i a F o r t u n a · A u s t i n T X 7 8 74 6 U S A · T 5 1 2 - 8 5 1 - 4 0 0 0 · T 8 0 0 - 8 8 8 - 5 0 1 6 · F 5 1 2 - 8 5 1 - 4 9 7 7 Product Bulletin 0139-0604-PB-LP © 2004 Cirrus Logic, Inc. All rights reserved. Product information is subject to change without notice. Cirrus Logic, Popguard, and Leading the Digital Entertainment Revolution are trademarks of Cirrus Logic, Inc. Other brand and product names may be trademarks or service marks of their respective owners.