wm8400 Wolfson Microelectronics plc, wm8400 Datasheet

wm8400

Manufacturer Part Number

wm8400

Description

Wolfson Audioplustm Hi-fi Audio Codec And Power Management Unit For Mobile Multimedia

Manufacturer

Wolfson Microelectronics plc

Datasheet

1.WM8400.pdf (208 pages)

Current page: 1 of 208
Download datasheet (3Mb)

DESCRIPTION

The WM8400 is a highly integrated audio CODEC and power

management unit which provides a cost-effective companion

solution for mobile multimedia applications.

Stereo 24-bit sigma-delta ADCs and DACs provide hi-fi quality

audio recording and playback, with a flexible digital audio

interface supporting most commonly-used data formats and

clocking schemes. An integrated low-power FLL, an alternative

DAC interface and TDM support provide additional flexibility.

The ultra-low power audio CODEC is complemented with a

powerful 1W speaker driver, which can operate in class D or AB

modes. Low leakage, high PSRR and pop/click suppression

enable direct battery connection for the speaker supply.

Multiple microphone or line inputs (mono, stereo, single-ended

or differential) can be supported. A programmable high-pass

filter is provided to remove low frequency noise from the input

signal.

Four headphone drivers support fully differential headset drive,

providing excellent crosstalk performance and bass response,

maximising stereo effects, and allowing the removal of large

and expensive headphone capacitors.

The WM8400 incorporates two programmable DC-DC step-

down (Buck) converters and four low-dropout (LDO) regulators.

The startup sequence and default voltages for the DC-DC

converters and two of the LDOs are pin selectable; All the

regulators are software programmable. The DC-DCs, LDO1 and

LDO2 are intended to power the MMP sub-system, whilst the

remaining LDOs are specifically designed to power the on-chip

audio CODEC.

The WM8400 is supplied in a 6x6mm 105-ball BGA package,

ideal for use in portable systems. The WM8400 forms part of

the

management solutions.

To receive regular email updates, sign up

WOLFSON MICROELECTRONICS plc

Wolfson

Wolfson AudioPlus

AudioPlus

Management Unit for Mobile Multimedia

series

http://www.wolfsonmicro.com/enews/

audio

and

Hi-Fi Audio CODEC and Power

power

FEATURES

APPLICATIONS

DAC SNR 93dB (‘A’ weighted), THD -84dB at 48kHz, 3.0V

ADC SNR 93dB (‘A’ weighted), THD -82dB at 44.1kHz, 3.0V

Microphone interface (Up to four differential microphones)

1W Speaker driver

Headphone / ear speaker drivers

4 Mono or stereo differential line outputs

On-chip FLL provides flexible clocking scheme

Sample rates: 8, 11.025, 12, 16, 22.05, 24, 32, 44.1, 48kHz

Powerful GPIO functions

2 software-programmable DC-DC buck converters (up to 1A)

4 software-programmable LDO regulators (up to 250mA)

Pin selectable start-up sequence and default voltages

Ultra-low power consumption

105-ball 6x6mm BGA package

Multimedia and feature-rich mobile handsets

PDAs

Co-processor companion for multimedia processors

Digital Photo Frames

PND

PMP

1W into 8Ω BTL speaker at <0.1% THD

80dB PSRR @ 217Hz

<1uA leakage with direct battery connection

Software-selectable class D or AB mode

Filterless connection supported

Pop/Click suppression

40mW output power into 16Ω at 3.3V

Fully differential and capless modes supported

Pop/Click suppression

5mW analogue voice call

13mW DAC playback to headphones

Pre-Production, April 2009, Rev 3.0

WM8400

Related parts for wm8400

Related keywords

wm8400 datasheet
wm8400 data sheet
wm8400 pdf datasheet
wm8400 component
wm8400 part
wm8400 distributor
wm8400 RoHS
wm8400 datasheet download