WM9705 |
RFQ for WM9705 Required Field |
 |
| Product | Manufacturers | Pack | D/C |
| WM9705 | - | QFP | 00+ |
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. It 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.
Additionally, the WM9705 integrates a complete 4-wire touch screen controller, including on-chip screen drivers, pen-down detection feature, and pressure measurement capability.A 5-pin digital bi-directional AC-Link serial interface allows transfer of control data and DAC and ADC words to and from the AC'97 controller. The WM9705 is fully operable on 3V or 5V or mixed 3/5V supplies, and is packaged in the industry standard 48-pin TQFP package with 7mm body size, or in a smaller 7 * 7 * 0.9mm QFN.
Typical Application |
Features |
| • Personal Digital Assistants and 'Smartphones'• PocketPC systems | • AC'97 rev2.2 compliant codec with pen digitiser• 18-bit stereo audio codecs• On-chip sample rate conversion• Multiple channel input mixer• S/PDIF digital audio output• Headphone drivers on AUX and MONO outputs• 4-wire touch screen interface with co-ordinate and pressure measurement, and pen-down detection• Wake-up from sleep mode on pen down• 3V to 5V operation• Extensive power management features including hardware power down option• Standard AC'97 pinout in 48-pin TQFP package or 48-pin QFN package. |
| CONDITION | MIN | MAX |
| Digital supply voltages (DCVDD, DBVDD) | -0.3V | +3.63V |
| Analogue supply voltages (AVDD, HPVDD, SPKVDD) | -0.3V | +3.63V |
| Voltage range digital inputs | DGND -0.3V | DBVDD +0.3V |
| Voltage range analogue inputs | AGND -0.3V | AVDD +0.3V |
| Voltage range, COMP3 (pin31) | +5V | |
| Operating temperature range, TA | -25oC | +85oC |
| Storage temperature (TQFP package only) | -65oC | +150oC |
