AK5703EN 24-Bit 192kHz Stereo ADC with Low Noise High SNR (114dB) Mic Preamp Digital AGC I2S Interface & Low Power for Pro Audio & IoT

AK5703EN 24-Bit 192kHz Stereo ADC with Low Noise High SNR (114dB) Mic Preamp Digital AGC I2S Interface & Low Power for Pro Audio & IoT

FEATURES

1. Recording Function

  - 4-Channel ADC

  - Full-differential or Single-ended Input

  - Microphone Amplifier (+36dB/+30dB/+24dB/+18dB/+15dB/+12dB/+8dB/0dB)

  - Input Voltage: 1.8Vpp@AVDD=3.0V (= 0.6 x AVDD)

  - ADC Performance:

    S/(N+D): 85dB, DR, S/N: 96dB@MGAIN=0dB, Single-ended Input

    S/(N+D): 78dB, DR, S/N: 83dB@MGAIN=+30dB, Full Differential Input

  - Digital HPF for DC-offset cancellation (fc=3.4Hz@fs=44.1kHz)

  - Microphone Sensitivity Correction (+3dB  3dB, 0.75dB Step)

  - Digital ALC (Automatic Level Control)

  - Input Digital Volume (+36dB  52.5dB, 0.375dB Step, Mute)

  - Programmable Output Data Delay

  Delay Time: 0 to 64/64fs (1/64fs Step)

2. Sampling Frequency:

  - PLL Slave Mode (BICK pin): 8kHz  48kHz

  - PLL Slave Mode (MCKI pin): 8kHz, 11.025kHz, 12kHz, 16kHz, 22.05kHz, 24kHz, 32kHz, 44.1kHz, 48kHz

  - PLL Master Mode: 8kHz, 11.025kHz, 12kHz, 16kHz, 22.05kHz, 24kHz, 32kHz, 44.1kHz, 48kHz

  - EXT Master/Slave Mode: 8kHz  48kHz (256fs), 8kHz  24kHz (512fs), 8kHz  12kHz (1024fs)

3. PLL Input Clock:

  - MCKI pin: 27MHz, 26MHz, 24MHz, 19.2MHz, 13.5MHz, 13MHz, 12.288MHz, 12MHz, 11.2896MHz

  - BICK pin: 32fs/64fs

4. Master/Slave Mode

5. Audio Interface Format: MSB First, 2’s complement - 24/16-bit MSB justified, 24/16-bit I2S, TDM Mode

6. P I/F: 3-wire Serial Control or I2C Bus (Ver 1.0, 400kHz Mode)

7. Power Supply:

  - AVDD: 2.4 ~ 3.6V

  - DVDD: 1.6 ~ 1.98V

  - TVDD: 1.6 or (DVDD-0.2) ~ 3.6V

8. Power Supply Current: 9.0mA (EXT Slave Mode)

9. Ta = 30  85C

10. Package: 28pin QFN (4mm x 4mm, 0.4mm pitch)

DESCRIPTION

The AK5703 is a 4-channel 24-bit A/D converter with programmable microphone amplifiers and ALC (Automatic Level Control) circuit. It is designed for consumer microphone array applications. An integrated PLL operates from a wide variety of clocks, enabling high design flexibility. Microphone power outputs are included for biasing external microphones. Wide dynamic range is achieved, at 83dB with a microphone gain setting of +30dB. The AK5703 is packaged in a space-saving 28-pin QFN package.

APPLICATIONS

Professional Audio Equipment

Recording devices (portable recorders, digital audio recorders)

Microphone arrays (conference systems, voice recognition devices)

Mixers & audio interfaces (USB/Case audio equipment

consumer Audio Products

High-end headphones/USB microphones (gaming, live streaming, content creation)

Smart speakers (high-fidelity voice capture)

Portable music players (Hi-Res audio support)

Voice Interaction & loT Devices

Smart home systems (voice assistants, smart hubs)

In-car voice systems (noise reduction, far-field pickup)

Wireless microphones (karaoke mics, streaming mics)

Broadcasting & Conference Systems

Conference microphones (omnidirectional/directional pickup)

Broadcast-grade recording (podcasting, radio)

INFORMATION

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