AK5704
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.
Key Features
- 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
- Digital Voice Activity Detector
- Programmable Digital Filter Mixer 2nd order HPF and LPF Digital ALC (Automatic Level Control): 4-ch Link Mode, 2-ch Mode
- Digital Audio interface Master/Slave mode Sampling Frequency: 8 k, 11.025 k, 12 k, 16 k, 22.05 k, 24 k, 32 k, 44.1 k, 48 k, 88.2 k, 96 k,
- 4 k, 192 kHz Interface Format - 32/24/16-bit I2S/MSB justified, 16-bit PCM Short/Long Frame - 4-ch TDM - 8/12/16-ch Cascade TDM
- Built-in PLL
- Control I/F: I2C-bus (400kHz)
- Operation Temperature Range: Ta = 40 to 85°C
- Power Supply:
