The WM8731 or WM8731L (WM8731/L) are low power stereo CODECs with an integrated headphone driver. The WM8731/L is designed specifically for portable MP3 audio and speech players and recorders. The WM8731 is also ideal for MD, CD-RW machines and DAT recorders. Stereo line and mono microphone level audio inputs are provided, along with a mute function, program.
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 quad flat leadless package (QFN).
BLOCK DIAGRAM
FEATURES
Highly Efficient Headphone Driver
Audio Performance
- ADC SNR 90dB (‘A’ weighted) at 3.3V, 85dB at 1.8V - DAC SNR 100dB (‘A’ weighted) at 3.3V, 95dB at 1.8V
Low Power - Playback only 22mW, 8mW (‘L’ Variant) - Analogue Pass Through 12mW, 3.5mW (‘L’ variant) - 1.42
– 3.6V Digital Supply Operation - 2.7
– 3.6V Analogue Supply Operation - 1.8
– 3.6V Analogue Supply Opera.
No. | Partie # | Fabricant | Description | Fiche Technique |
---|---|---|---|---|
1 | WM8731 |
Wolfson Microelectronics plc |
Portable Internet Audio CODEC | |
2 | WM8733 |
Wolfson Microelectronics plc |
102dB Stereo DAC | |
3 | WM8734 |
Wolfson Microelectronics |
Stereo Audio CODEC | |
4 | WM8736 |
Wolfson Microelectronics plc |
24-bit/ 96kHz 6-Channel DAC with Volume Control | |
5 | WM8737L |
Wolfson Microelectronics plc |
STEREO ADC WITH MICROPHONE PREAMPLIFIER | |
6 | WM8738 |
Wolfson Microelectronics plc |
24 BIT STEREO ADC | |
7 | WM8739 |
Wolfson Microelectronics plc |
STEREO AUDIO ADC | |
8 | WM8739L |
Wolfson Microelectronics plc |
STEREO AUDIO ADC | |
9 | WM8706 |
Wolfson Microelectronics plc |
24-bit/ 192kHz Stereo DAC with Volume Control | |
10 | WM8711 |
Wolfson Microelectronics plc |
Internet Audio DAC | |
11 | WM8711BL |
Wolfson Microelectronics |
Ultra-Small Audio DAC | |
12 | WM8711L |
Wolfson Microelectronics |
Internet Audio DAC |