Product Summary

The WM9705 is a high-quality stereo audio codec with an integrated touch screen controller. The audio section is compliant with the Intel AC’97 Rev 2.2 specification. The WM9705 performs full-duplex 18-bit codec functions and supports variable sample rates from 8 to 48k samples/s with high signal to noise ratio. Optional AC’97 features include 3D sound enhancement, line-level outputs, stereo buffered headphone outputs, hardware sample rate conversion, primary/secondary mode operation and S/PDIF output. Headphone auto-detect, I2S output and headphone buffer on the mono output are included. The WM9705 is suitable for Personal Digital Assistants and Smartphones and PocketPC systems.

Parametrics

WM9705 absolute maximum ratings: (1)Digital supply voltage: -0.3V to +7V; (2)Analogue supply voltage: -0.3V to +7V; (3)Voltage range digital inputs: DVSS -0.3V to DVDD +0.3V; (4)Voltage range analogue inputs: AVDD -0.3V to AVDD +0.3V; (5)Operating temperature range, TA: -25 to +85℃; (6)Storage temperature after soldering: -65 to +150℃; (7)Package body temperature (soldering 10 seconds): +240℃; (8)Package body temperature (soldering 2 minutes): +183℃.

Features

WM9705 features: (1)AC’97 rev2.2 compliant codec with pen digitiser; (2)18-bit stereo audio codecs; (3)On-chip sample rate conversion; (4)Multiple channel input mixer; (5)S/PDIF digital audio output; (6)Headphone drivers on AUX and MONO outputs; (7)4-wire touch screen interface with co-ordinate and pressure measurement, and pen-down detection; (8)Wake-up from sleep mode on pen down; (9)3V to 5V operation; (10)Extensive power management features including hardware power down option; (11)Standard AC’97 pinout in 48-pin TQFP package or 48-pin QFN package.

Diagrams

WM9705 block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
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WM9705
WM9705

Other


Data Sheet

Negotiable 
WM9705SEFL/RV
WM9705SEFL/RV

Wolfson Microelectronics

Audio CODECs STR AC'97 CODEC T/P Interface 48-pin

Data Sheet

0-2200: $1.97
WM9705SEFT/V
WM9705SEFT/V

Wolfson Microelectronics

Audio CODECs Stereo AC'97 Codec T/P Interface

Data Sheet

0-1: $4.11
1-50: $3.45
50-100: $2.87
100-500: $2.71
WM9705SEFL/V
WM9705SEFL/V

Wolfson Microelectronics

Audio CODECs Stereo AC'97 CODEC T/P Interface

Data Sheet

0-1: $3.10
1-50: $2.63
50-100: $2.20
100-500: $2.07
WM9705SEFT/RV
WM9705SEFT/RV

Wolfson Microelectronics

Audio CODECs Stereo AC'97 Codec T/P Interface

Data Sheet

0-2200: $2.57