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WM8711L

Wolfson Microelectronics
Part Number WM8711L
Manufacturer Wolfson Microelectronics
Description Internet Audio DAC
Published Apr 23, 2007
Detailed Description w DESCRIPTION The WM8711 or WM8711L (WM8711/L) is a low power stereo DAC with an integrated headphone driver. The WM8711...
Datasheet PDF File WM8711L PDF File

WM8711L
WM8711L

Overview
w DESCRIPTION The WM8711 or WM8711L (WM8711/L) is a low power stereo DAC with an integrated headphone driver.
The WM8711/L is designed specifically for portable MP3 audio and speech players.
The WM8711/L is also ideal for MD, CD machines and DAT players.
Stereo 24-bit multi-bit sigma delta DACs are used with oversampling digital interpolation filters.
Digital audio input word lengths from 16-32 bits and sampling rates from 8KHz to 96KHz are supported.
Stereo audio outputs are buffered for driving headphones from a programmable volume control, line level outputs are also provided along with anti-thump mute and power up/down circuitry.
The device is controlled via a 2 or 3 wire serial interface.
The interface provides access to all features including volume controls, mutes, de-emphasis and extensive power management facilities.
The device is available in a small 28lead SSOP package or the smaller 28-lead QFN (5x5x0.
9 mm Body) package.
• • • • WM8711 / WM8711L Internet Audio DAC with Integrated Headphone Amplifier FEATURES Audio Performance - DAC SNR 100dB (‘A’ weighted) at AVDD = 3.
3V - DAC SNR 90dB (‘A’ weighted) at AVDD = 1.
8V (WM8711L) Low Power Headphone Playback - Down to 20mW at 3.
3V - Down to 6mW at 1.
8V (WM8711L) - 1.
42 – 3.
6V Digital Supply Operation - 2.
7 – 3.
6 V Analogue Supply Operation - 1.
8 – 3.
6 V Analogue Supply Operation (‘L’ Variant) DAC Sampling Frequency: 8KHz – 96KHz 2 or 3-Wire MPU Serial Control Interface Programmable Audio Data Interface Modes - I2S, Left, Right Justified or DSP - 16/20/24/32 bit Word Lengths - Master or Slave Clocking Mode Stereo Audio Outputs Output Volume and Mute Controls Highly Efficient Headphone Driver 28-lead SSOP or 28-lead QFN (5x5x0.
9 mm) package • • • • • A USB mode is provided where all audio rates can be APPLICATIONS derived from a single 12MHz or 24MHz MCLK, saving on www.
DataSheet4U.
com • Portable MP3 Players the need for a PLL or multiple crystals.
• CD and Minidisc Players BLOCK DIAGRAM WOLFSON MICROELE...


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