98/95 dB Stereo Codec with Class D Speaker Driver
The WM8960 is a low power stereo codec featuring Class D speaker drivers to provide 1 W per channel into 8 W loads. Guaranteed low leakage, excellent PSRR and pop/click suppression mechanisms enable direct battery connection for the speaker supply. This IC integrates a complete microphone interface and a stereo headphone driver. External component requirements are drastically reduced as no separate microphone, speaker or headphone amplifiers are required. Advanced on-chip digital signal processing performs automatic level control for the microphone or line input. Stereo 24-bit Delta Sigma converters are used with low power over-sampling digital interpolation and decimation filters and a flexible digital audio interface. The master clock can be input directly or generated internally by an onboard PLL, supporting most commonly used clocking schemes.
Technology
Signal Chain Position
Features
- DAC SNR 98 dB (’A’ weighted), THD -84 dB at 48 kHz, 3.3V
- ADC SNR 95 dB (’A’ weighted),THD -82 dB at 48 kHz, 3.3V
- Pop and click suppression
- Microphone interface
- Programmable ALC / limiter and noise gate
- 3D stereo enhancement
- Stereo class D speaker driver
- 1W per channel into 8Ω BTL speakers
- Flexible switching clock
- Filterless connection supported
- On-chip headphone driver 40mW output power into 16Ω at 3.3V
- Capless mode
- Low power consumption
- 10mW headphone playback (2.7V / 1.8V supplies)
- 20mW record and playback (2.7V / 1.8V supplies)
- Low supply voltages
- Analog 2.7V to 3.6V (AVDD)
- Speaker 2.7V to 5.5V (SPKVDD)
- Digital core: 1.71V to 3.6V (DCVDD)
- Digital I/O: 1.71V to 3.6V (DBVDD)
- On-chip PLL provides flexible clocking scheme
- Sample rates: 8, 11.025, 12, 16, 22.05, 24, 32, 44.1, 48
- 5x5x0.9mm 32-pin QFN package
Parametric Specifications
| Channels In | 2 |
| Channels Out | 2 |
| DAC THD+N (dB) | -84 |
| ADC THD+N (dB) | -82 |
| Analog Power Supply (V) | 2.5-3.6 |
| Supply Current (µA) | 1.71-3.6 |
| Package | 32 QFN |
