WM8595 Datasheet, PDF (1/82 Pages) Wolfson Microelectronics plc – 24-bit 192kHz 2Vrms Multi-Channel CODEC

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WM8595
24-bit 192kHz 2Vrms Multi-Channel CODEC
DESCRIPTION
The WM8595 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 volume control and clocking, and a range of
input/output channel selection options with analogue volume
control for flexible routing within current and future audio
systems.
The WM8595 has a six stereo input selector which accepts
input levels up to 2Vrms. One stereo input can be selected
through an input mux to be routed through to the ADC.
The WM8595 outputs two stereo audio channels at line
levels up to 2Vrms, driven from independent DACs. The
DAC channels include independent digital volume control,
and both stereo output channels include analogue volume
control with soft ramp.
The WM8595 supports up to 2Vrms analogue inputs, 2Vrms
outputs, with sample rates from 32kHz to 192kHz on the
DACs, and 32kHz to 96kHz on the ADC.
The WM8595 is controlled via a serial interface with support
for 2-wire and 3-wire control with full readback. Control of
mute, emergency shutdown and reset can also be achieved
by pin selection.
The WM8595 is ideal for audio applications requiring high
performance and flexible routing options, including flat panel
digital TV and DVD recorder.
The WM8595 is available in a 48-pin QFN package.
FEATURES
• Multi-channel CODEC with 6 stereo input selector and 2
stereo output selector
• 4-channel DAC, 2-channel ADC
• 6x2Vrms stereo input selector to ADC
• 2x2Vrms stereo output
• Audio performance
- DAC: 100dB SNR typical (‘A’ weighted @ 48kHz)
- DAC: -87dB THD typical
- ADC: 96dB SNR typical (‘A’ weighted @ 48kHz)
- ADC: -80dB THD typical
• Independent sampling rate for ADC and DACs possible
• DACs sampling frequency 32kHz – 192kHz
• ADC sampling frequency 32kHz – 96kHz
• DAC digital volume control +12dB to -100dB in 0.5dB
steps
• ADC digital volume control from +30dB to -97dB in 0.5dB
steps
• ADC input analogue boost control, selectable from 0dB,
+3dB, +6dB and +12dB
• Output analogue volume control +6dB to -73.5dB in 0.5dB
steps with zero cross or soft ramp to prevent pops and
clicks
• Digital multiplexer to interface to multiple digital sources –
DSP, HDMI, memory card
• 2-wire and 3-wire serial control interface with readback and
hardware reset, mute and emergency shutdown pins
• ADC features master or slave clocking modes
• Programmable format audio data interface modes
- I2S, LJ, RJ, DSP
• 3.3V / 9V analogue, 3.3V digital supply operation
• 48-pin QFN package
APPLICATIONS
• Digital Flat Panel TV
• DVD-RW
• Set Top Boxes
WOLFSON MICROELECTRONICS plc
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Production Data, January 2011, Rev 4.2
Copyright ©2011 Wolfson Microelectronics plc