wm8731SEDS
DESCRIPTION
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.
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 Operation ‘L’ Variant
• ADC and DAC Sampling Frequency: 8kHz – 96kHz
• Selectable ADC High Pass Filter
• 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
• Microphone Input and Electret Bias with Side Tone Mixer
• Available in 28-lead SSOP or 28-lead QFN package
APPLICATIONS
• Portable MP3 Players and Recorders
• CD and Minidisc Recorders
• PDAs / smartphones