Codec with Speaker Driver

The WM8750 is a low power, high quality stereo codec with integrated stereo or mono microphone interfaces and a stereo headphone. Advanced on-chip digital signal processing performs graphic equalizer, 3-D sound enhancement and automatic level control for the microphone or line input. The WM8750 can operate as a main or secondary, with various main clock frequencies including 12 or 24 MHz for USB devices, or standard 256 fs rates like 12.288 MHz and 24.576 MHz. Different audio sample rates such as 96 kHz, 48 kHz, 44.1 kHz are generated directly from the main clock without the need for an external PLL.

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Technologies

Portable Codecs

Features

  • DAC SNR 98 dB (‘A’ weighted), THD -95B at 48kHz, 3.3V
  • ADC SNR 95 dB (‘A’ weighted), THD -90 dB at 48kHz, 3.3V
  • Complete stereo / mono microphone interface
  • Programmable ALC / noise gate
  • On-chip 400㎽ BTL speaker driver (mono)
  • On-chip headphone driver
  • >40㎽ output power on 16Ω/ 3.3V
  • THD –80 dB at 20㎽, SNR 90 dB with 16Ω load
  • No DC blocking capacitors required (capless mode)
  • Separately mixed mono output
  • Digital graphic equalizer
  • Low power
    • 7㎽stereo playback (1.8V / 1.5V supplies)
    • 14㎽ record & playback (1.8V / 1.5V supplies)
  • Low supply voltages
    • Analog 1.8V to 3.6V
    • Digital core: 1.42V to 3.6V
    • Digital I/O: 1.8V to 3.6V
  • 256fs / 384fs or USB main clock rates: 12MHz, 24MHz
  • Audio sample rates: 8, 11.025, 16, 22.05, 24, 32, 44.1, 48, 88.2, 96 kHz generated internally from main clock
  • 5x5x0.9 mm QFN package

Parametric Specifications

DACs 2
ADCs 2
DAC THD+N (dB) -84
ADC THD+N (dB) -82
Sample Rate (kHz) 8-96
Analog Power Supply (V) 1.8-3.6
Power Consumption (mW) 7-14
Package 32 QFN

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