GENERAL DESCRIPTION
The AK5374 is a stereo A/D converter with a USB 2.0 interface. The device includes an integrated USB serial interface engine, a USB transceiver, an audio class processing block, endpoints, and a 24-bit stereo audio ADC. An integrated PLL enables the use of multiple sampling frequencies. A microphone amplifier and an integrated programmable gain amplifier are available for processing low-level signals from an analog microphone element. An external EEP-ROM is used to store the descriptor information. The AK5374 is housed in a 36-pin package. It is a low power device, operating from +3.3V, and consuming just 100mW in active mode and less than 100μA in suspend mode.

FEATURES
□ USB 2.0 compliant (full speed audio class)
□ USB audio controller
    USB serial interface engine
    Audio class encoder/decoder
□ USB synchronization
    Synchronous type (synchronize with 1ms SOF)
□ 24-bit stereo A/D converter with mute control
    S/(N+D) = 85dB, S/N = 91dB (AVDD=3.3V, MIC-Amp = 0dB)
    S/(N+D) = 70dB, S/N = 78dB (AVDD=3.3V, MIC-Amp = +30dB)
□ Microphone amplifier gain:
    0dB, +6dB, +12dB, +18dB, +24dB, +30dB, +36dB
□ Digital programmable gain: +24dB ~ -31dB, 1dB Step
□ Integrated PLL supports standard sampling frequencies
    8kHz, 11.025kHz, 16kHz, 22.05kHz, 32kHz 44.1kHz, 48kHz
□ EEP-ROM interface for descriptors
□ Power Management
□ Low power consumption
    30mA in active mode
    Less than 100μA in suspend mode
□ Power Supply:
    Analog Power Supply (AVDD): 3.0 ~ 3.6V
    Digital Power Supply (DVDD): 3.0 ~ 3.6V
□ Ta = -10 ~ +70°C
□ Package:
    36pin QFN (5 x 5 mm, 0.4mm pitch)