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WM8594 Datasheet(PDF) 1 Page - Wolfson Microelectronics plc |
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WM8594 Datasheet(HTML) 1 Page - Wolfson Microelectronics plc |
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1 / 78 page  w WM8594 24-bit 192kHz 2Vrms Multi-Channel CODEC WOLFSON MICROELECTRONICS plc To receive regular email updates, sign up at http://www.wolfsonmicro.com/enews/ Product Preview, January 2007, Rev 1.0 Copyright ©2007 Wolfson Microelectronics plc DESCRIPTION The WM8594 is a high performance multi-channel audio CODEC with flexible input/output selection and digital and analogue volume control. Features include a 24-bit stereo ADC with digital gain control, two 24-bit DACs with independent digital volume control, and a range of input/output channel selection options with analogue volume control, for flexible routing within current and future audio systems. The WM8594 accepts five stereo audio inputs at line levels up to 2Vrms. One stereo input can be routed to the ADC. All inputs can be routed to the output. The WM8594 outputs three stereo audio channels at line levels up to 2Vrms, which can be selected from any of the analogue inputs and DAC outputs. Additionally, one stereo output is available with a headphone driver. The DAC channels include independent digital volume control, and all three stereo output channels include analogue volume control with soft ramp. The WM8594 supports up to 2Vrms analogue inputs, 2Vrms outputs, with sampling rates from 32kHz to 192kHz for the DACs, and 32kHz to 96kHz for the ADC. The WM8594 is ideal for audio applications requiring high performance and flexible routing options, including flat panel digital TV and DVD recorder. The device is controlled via a serial interface with support for 2-wire and 3-wire control with full readback. Control of mute, powerdown and reset can also be achieved by pin selection. The WM8594 is available in a 48-lead TQFP package. FEATURES • Multi-channel CODEC with 5 stereo input selector and 3 stereo output selector • 4-channel DAC, 2-channel ADC • Five stereo 2Vrms stereo inputs with analogue bypass to three stereo 2Vrms outputs • Stereo headphone driver • Audio performance - DAC: 100dB SNR typical (‘A’ weighted @ 48kHz) - DAC: -90dB THD typical - ADC: 100dB SNR typical (‘A’ weighted @ 48kHz) - ADC: -90dB THD typical • Independent sampling rates for ADC, DAC1 and DAC2 • DACs sampling frequency 32kHz to 192kHz • ADC sampling frequency 32kHz to 96kHz • ADC digital gain control: +30dB to -97dB • DAC digital volume control: +12dB to -100dB • Analogue Volume control with soft ramp: +6dB to -73.5dB • All volume controls include zero cross detection to prevent pops and clicks • 2 and 3-wire serial control interface with readback and hardware reset, mute and powerdown pins • Master or slave clocking modes • Programmable format audio data interface modes - I 2S, LJ, RJ, DSP • 3.3V / 9V analogue, 3.3V digital supply operation • 48-lead TQFP package APPLICATIONS • Digital Flat Panel TV • DVD-RW |
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