AK5704EN

Low-Power 32-bit 4 ch ADC with MIC-Amp

Description

The AK5704EN is a high performance analog front-end A / D converter IC ideal for voice recognition, voice control, and conferencing applications. The device has a built-in 4 channel 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 channel microphone array by connecting multiple AK5704EN’s. In addition, since it incorporates ultra-low power consumption voice activity detection, power consumption during wait time is greatly reduced.

Key Features

Low-noise recording with low power consumption

VAD feature further reduces system power consumption

```
Supports Ultrasonic Recording
```

Applications

                                Conference system, microphone array system, smart speaker, baby or pet monitor, IC recorder

Specifications

Part Number	AK5704EN
Number of Channels	4
Analog Input Type	Single / Differential
Bits [bit]	32
Max fs [kHz]	192
THD+N [dB]	-90
S/N [dB]	105
Power Supply Voltage (MIN.) [V]	1.7 / 3.0
Power Supply Voltage (TYP.) [V]	1.8 / 3.3
Power Supply Voltage (MAX.) [V]	1.9 / 3.6
PLL	Yes
Microphone Amplifier	Yes
Other	VAD, ALC, Cascade TDM I/F
Operating Temperature [℃]	-40 to 85
Device Package	HWQFN
Number of Pins	28