Datasheet > WM9712L

WM9712L

更新时间： 2024-09-17 22:41:27

品牌	Logo	应用领域
欧胜 - WOLFSON		/
页数	文件大小	规格书
78页	691K
描述
AC97 Audio and Touchpanel CODEC

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WM9712L 数据手册

WM9712L

AC’97 Audio and Touchpanel CODEC

DESCRIPTION

FEATURES

• AC’97 Rev 2.2 compatible stereo codec

- DAC SNR 94dB, THD –87dB

The WM9712L is a highly integrated input / output device

designed for mobile computing and communications. The

device can connect directly to a 4-wire or 5-wire touchpanel,

mono or stereo microphones, stereo headphones and a

mono speaker, reducing total component count in the

system. Additionally, phone input and output pins are

provided for seamless integration with wireless

communication devices.

- ADC SNR 92dB, THD –87dB

- Variable Rate Audio, supports all WinCE sample rates

- Tone Control, Bass Boost and 3D Enhancement

• On-chip 45mW headphone driver

• On-chip 400mW mono speaker driver

• Stereo, mono or differential microphone input

- Automatic Level Control (ALC)

The WM9712L also offers up to four auxiliary ADC inputs

for analogue measurements such as temperature or light,

and five GPIO pins for interfacing to buttons or other digital

devices. To monitor the battery voltage in portable systems,

the WM9712L has two uncommitted comparator inputs.

• Auxiliary mono DAC (ring tone or DC level generation)

• Seamless interface to wireless chipset

• Resistive touchpanel interface

- Supports 4-wire and 5-wire panels

- 12-bit resolution, INL ±2 LSBs (<0.5 pixels)

- X, Y and touch-pressure (Z) measurement

- Pen-down detection supported in Sleep Mode

• Up to 5 GPIO pins

All device functions are accessed and controlled through a

single AC-Link interface compliant with the AC’97 standard.

Additionally, the WM9712L can generate interrupts to

indicate pen down, pen up, availability of touchpanel data,

low battery, dead battery, and GPIO conditions.

• 2 comparator inputs for battery monitoring

• Up to 4 auxiliary ADC inputs

• 1.8V to 3.6V supplies

The WM9712L operates at supply voltages from 1.8 to 3.6

Volts. Each section of the chip can be powered down under

software control to save power. The device is available in a

small leadless 7x7mm QFN package, ideal for use in hand-

held portable systems, or in the industry standard 48-pin

TQFP package.

• 7x7mm QFN or 48-pin TQFP package options

APPLICATIONS

• Personal Digital Assistants (PDA)

• Smartphones

• Handheld and Tablet Computers

BLOCK DIAGRAM

WOLFSON MICROELECTRONICS plc

Production Data, December 2003, Rev 4.0

www.wolfsonmicro.com

12 3 4 5 6 7...78

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