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WM8594, WM8594S, WM8594SEFT/RV

Table of contents:
Info of WM8594
Info of WM8594S
Info of WM8594SEFT/RV

WM8594, WM8594S, WM8594SEFT/RV Selling Leads, Datasheet

MFG:WOLFSON Package Cooled:stock D/C:09+

WM8594, WM8594S, WM8594SEFT/RV Datasheet download

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Part Number: WM8594

MFG: WOLFSON

Package Cooled: stock

D/C: 09+

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WM8594 General 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.

WM8594 Maximum Ratings

CONDITION	MIN	MAX
Digital supply voltage, DVDD	-0.3V	+4.5V
Analogue supply voltage, AVDD1	-0.3V	+7V
Analogue supply voltage, AVDD2	-0.3V	+15V
Voltage range digital inputs	DGND -0.3V	DVDD +0.3V
Voltage range analogue inputs	TBD	AVDD +0.2V
Master Clock Frequency		38.462MHz
Ambient temperature (supplies applied)	-55	+125
Storage temperature	-65	+150
Pb free package body temperature (reflow 10 seconds)		+260
Package body temperature (soldering 2 minutes)		+183

Note:
1. Analogue and digital grounds must always be within 0.3V of each other.

WM8594 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
- I²S, LJ, RJ, DSP
• 3.3V / 9V analogue, 3.3V digital supply operation
• 48-lead TQFP package

WM8594 Typical Application

• Digital Flat Panel TV
• DVD-RW

WM8594 Connection Diagram

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