News Release

- New Product Information -

(updated 2018/06/21) 2018/06/19
AKM releases a 6ch A/D converter for microphones suitable for automotive active noise cancellation

Product Name
Audio > Audio A/D Converter
Low latency automotive 6ch A/D converter. Equipped with power supply for microphones and diagnostics.
Active Noise Cancellation systems, Microphone modules Automotive amplifier units, Automotive head units, car audio


Asahi Kasei Microdevices Corporation, (AKM), has developed a 6ch A/D converter, (ADC), the AK5736 for microphones in Active Noise Cancellation, (ANC *), systems implemented in car audio.  The AK5736 features the low latency of 4.3 [1/fs] required for high speed processing with built-in capability to supply microphone power internally.  The AK5736 also has a diagnostic function to monitor microphone connection.  As a new feature, the AK5736 has an analog gain circuit setting to set a high gain level thus keeping high.

This product is an upgrade of the AK5730, a 4ch ADC for microphones, released in 2014.

* Active Noise Cancellation


● Signal Processing with Low Latency

The AK5736 features 4.3 [1/fs] low latency signal processing.  This is perfect for an ANC system requiring real time processing.

● Microphone Power Supply Output (External power supply for microphones is not necessary)

This product can supply a maximum of 15mA per channel per microphone.  External microphone power supplies are unnecessary.

● Microphone Connection Monitoring

The AK5736 integrates, “Diagnostic function”, monitoring for microphone or harness connections.  In response to customer requests for amplifier units and head units, high accuracy diagnostic mode detecting with 12-bit accuracy has been newly added in addition to the simple diagnostic mode monitoring with 100mV accuracy.

Main Specifications

6ch A/D Converter for Microphone
Product Name AK5736VN AK5730VQ
ADCChannel6ch 4ch

Input Voltage2Vrms 1.65Vrms

DR 100dB (Typ.) 100dB (Typ.)

THD+N -92dB (Typ.) -92dB (Typ.)

CMRR 85dB (Typ.) 85dB (Typ.)

PSRR 80dB (Typ.) 50dB (Typ.)
Analog Amplifier 0,  +6 to +20dB+9dB
MIC biasNoise-100dBV-100dBV

Current15mA (/ch) 10mA (/ch)
Diagnostics Accuracy 100mV step/12-bit100mV step
Digital Filter Group Deley4.3 [1/fs]16.4 [1/fs]
TDM format8ch/16ch8ch
MIC bias GeneratorCharge Pump/BatteryCharge Pump
Operation Temperature Range-40 to +105°C-40 to +105°C
Package48-pin QFN48-pin LQFP
* Information on this page is current on the date of press release.
* AKM is a trademark of Asahi Kasei Microdevices Corporation in Japan, Europe and the United States.
* Appellations, company names and product names on this page are trademarks or registered trademarks of respective companies.

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