AK5704

[AK5704] AK5704 Low-Power 4-ch 32-bit ADC with MIC-Amp 1. General Description The AK5704 is a high performance analog front-end AD converter IC ideal for voice recognition, voice control, and conferencing applications. The device has a built-in 4-ch 32-bit ADC and a low noise microphone amplifier and extracts full performance of a high S/N microphone with low power consumption by achieving dynamic range of 105dB. It is possible to support up to 16-ch microphone array by connecting multiple AK5704’s. In addition, since it incorporates ultra-low power consumption voice activity detection, power consumption during wait time is greatly reduced. 2. Features 1. Recording Function 4-Channel Low Power 32-bit ADC 2-types Digital Filter (Low-latency [5/fs] Sharp Roll-off and Voice) Single-ended Inputs or Full-differential Inputs MIC Amplifier Gain: +30 dB to 0 dB, 3 dB step 2-output MIC Power Supplies: 2.8 V / 2.5 V / 1.8 V / Direct Mode Selectable ADC Characteristics: S/N, DR: 105 dB, THD+N: 90 dB, (Gain = 0 dB) S/N, DR: 96 dB, THD+N: 86 dB, (Gain = +18 dB) Excellent Power Supply Noise Reduction PSRR: 60dB Spurious Free Dynamic Range: 100dBc 4-Channel Digital MIC Interface Programmable Phase Adjustment Microphone Sensitivity Adjustment 2. Digital Voice Activity Detector 3. Programmable Digital Filter Mixer 2nd order HPF and LPF Digital ALC (Automatic Level Control): 4-ch Link Mode, 2-ch Mode 4. Digital Audio interface Master/Slave mode Sampling Frequency: 8 ...