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WM8738GEDS, WM8740, WM8740SEDS

Table of contents:
Info of WM8738GEDS
Info of WM8740
Info of WM8740SEDS

WM8738GEDS, WM8740, WM8740SEDS Selling Leads, Datasheet

MFG:WOLFSON Package Cooled:ROHS 3K/RL D/C:07+

WM8738GEDS, WM8740, WM8740SEDS Datasheet download

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Part Number: WM8738GEDS

MFG: WOLFSON

Package Cooled: ROHS 3K/RL

D/C: 07+

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WM8740 General Description

The WM8740 is a very high performance stereo DACdesigned for audio applications such as CD, DVD, hometheatre systems, set top boxes and digital TV. The WM8740supports data input word lengths from 16 to 24-bits andsampling rates up to 192kHz. The WM8740 consists of aserial interface port, digital interpolation filter, multi-bit sigmadelta modulator and stereo DAC in a small 28-pin SSOPpackage. The WM8740 also includes a digitally controllablemute and attenuator function on each channel.

The internal digital filter has two selectable roll-offcharacteristics. A sharp or slow roll-off can be selecteddependent on application requirements. Additionally, theinternal digital filter can be by-passed and the WM8740used with an external digital filter.

The WM8740 supports two connection schemes for audioDAC control. The SPI-compatible serial control portprovides access to a wide range of features including onchipmute, attenuation and phase reversal. A hardwarecontrollable interface is also available.

WM8740 Maximum Ratings

CONDITION	MIN	MAX
Supply voltage	-0.3V	+7.0V
Reference input		VDD + 0.3V
Operating temperature range, T_A	-25°C	+85°C
Storage temperature	-65°C	+150°C
Package body temperature (soldering, 10 seconds)		+240°C
Package body temperature (soldering, 2 minutes)		+183°C

WM8740 Features

• 120dB SNR ('A' weighted mono @48kHz), THD+N: -104dB@ FS
• 117dB SNR ('A' weighted stereo @48kHz), THD+N: -104dB@ FS
• Sampling frequency: 8kHz to 192kHz
• Selectable digital filter roll-off
• Optional interface to industry standard external filters
• Differential mono mode needing no glue logic
• Input data word: 16 to 24-bit
• Hardware or SPI compatible serial port control modes:
• Hardware mode: mute, de-emphasis, audio format control
• Serial mode: mute, de-emphasis, attenuation (256 steps), phase reversal
• Fully differential voltage outputs

WM8740 Typical Application

• CD, DVD audio
• Home theatre systems
• Professional audio systems

WM8740 Connection Diagram

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