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News
AKM releases the AK4637VN, an Automotive Monaural Audio CODEC for Car Communication Modules and Drive Recorders
2017-10-20 | ReturnProduct Name
AK4637VN
Product category: Audio > Audio CODECs > Automotive CODECs
Title
Low Power Audio 24-bit Mono CODEC with Microphone/Speaker Amplifiers, ALC, (Automatic Level Control), and 5-band Equalizer
Applications
Automotive Modules, (Data Communication Module), Drive Recorders
Description
Mono audio CODECs, (D/A converter + A/D converter), are widely used in portable AV equipment and IoT devices. In addition to these applications, the needs for mono audio CODECs in the in-car communication modules and drive recorders are increasing. Asahi Kasei Microdevices Corporation, (AKM), has released an automotive low-power, 24-bit mono audio CODEC. The AK4637VN is the automotive version of the AK4637EN, satisfying in-car product qualities such as AEC-Q100. It achieves great cost/performance by integrating a voice processor, a microphone amplifier, and a regulator. This is ideal for processing blocks of sound in the in-car communication modules and drive recorders.
Features
● Advanced Recording Function
This device integrates a low-noise/low-power microphone amplifier and microphone power supply to enable high quality, realistic recoding performance. This is achieved with a, “Wind Noise Reduction Filter”, and, “5-band Notch Filter”, that allows for removal of specific system tones/noises and a, “Digital Automatic Level Control (ALC) Circuit”, to optimize recording levels.
● 1W Output SPK-Amp
The integrated mono speaker amplifier is capable of 1W output power making the AK4637VN ideal for the sound output block of drive recorders.
● Low-power Consumption
The AK4637VN achieves very low-power consumption: 6.5mW in mono recording mode and 11.6mW in speaker playback mode.
Lineup
Product Name |
AK4637VN |
AK4637EN |
|
Sampling Frequency |
8 to 48kHz |
||
Mono 24-bit ADC |
|||
S/(N+D) |
83dB (MIC Gain=18dB) |
||
S/N |
88dB (MIC Gain=18dB) |
||
Mono 24-bit DAC (Line Output) |
|||
S/(N+D) |
80dB |
||
S/N |
94dB |
||
Other Functions |
|||
Speaker Amplifier |
1W Monaural Output (Stereo Line Output Switching Function) |
||
Microphone Amplifier |
Available (Gain Setting in 3dB Step) |
||
Digital MIC Interface |
Available |
||
Wind Noise Reduction Filter |
Available |
||
High Performance Digital ALC |
Available |
||
Equalizer |
Available (5-band/Notch Filter/Gain Setting during Operation) |
||
PLL with Loop Filter |
Available (can support variable clocks) |
||
Others |
BEEP Input Mixing Output Circuit, Sidetone Mixing, Volume Control, Digital Volume for Output, LDO with High PSRR |
||
Micro-controller Interface |
I2C |
||
Analog Power Supply (AVDD) |
2.8 to 5.5V |
||
Digital Power Supply (DVDD) |
1.6 to 1.98V |
||
Digital I/O Power (TVDD) |
1.6 or (DVDD-0.2) to 3.6V |
||
Package |
20-pin QFN (3 × 3mm, 0.4mm pitch) |
||
Operation Temperature |
-40 to 85°C |
||
AEC-Q100 |
Will be Qualified in Mar. 2018 |
Do not Support |
[Notes]
* Information on this page is current on the date of press release.
* AKM is 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.
Source:http://www.akm.com/