- Abracon
- Adam Tech
- Aerospace, Defense & Marine
- Agastat
- AIC
- AKM Semiconductor
- Alcoswitch
- Allegro
- Alps Electric
- Altera
- AMI Semiconductor
- AMP
- ams
- Analog Devices (ADI)
- Aptina Imaging
- Atmel
- Avago / Broadcom
- AVX
- Axicom
- Bccomponents
- Beyschlag
- BI Technologies
- Bourns Inc.
- Bowei Integrated Circuits
- Bridgelux
- Buchanan
- California Micro Devices
- Catalyst Semiconductor
- CGS
- Cirrus Logic
- Citizen Electronics
- CML Microcircuits
- Coiltronics
- Cooper Bussmann
- Corcom
- Core Logic
- Cree
- CSR PLC
- CTS
- Cypress Semiconductor
- Dale
- Data Image
- Deutsch
- Diodes Incorporated
- DOMINANT Opto Technologies
- E-T-A
- Eaton
- ECS
- Edison Opto
- Elcon
- EPCOS
- Epistar
- Epson
- Everlight Electronics
- Exar
- Fairchild Semiconductor
- FCI
- Freescale Semiconductor
- Fremont Micro Devices (FMD)
- Fujitsu Semiconductor
- Fulltech Electric
- General Semiconductor
- Harvatek
- Holsworthy
- Hsuan Mao Technology
- IDT
- Infineon Technologies
- Innolux
- International Rectifier (IR)
- Intersil
- IRC
- ISSI
- IXYS-IC
- Jing Cheng Electronical
- JL World
- Johanson Dielectrics
- Johanson Technology
- JRC / NJR
- JST
- KEC
- Kilovac
- Kingbright
- Kyocera Industrial Ceramics
- LEDiL
- Linear Technology / ADI
- Lite-On Technology
- Littelfuse
- Lumex
- Lumileds
- Luminary Micro
- Luminus Devices
- Macronix
- Maojwei / ZJPT
- Maxim Integrated
- MCC
- Mean Well Enterprises
- Microchip Technology
- Micron
- Microsemi
- Mini-Circuits
- Molex
- Murata Manufacturing
- Murata Power Solutions
- MWT
- National Semiconductor
- Nichicon
- Nippon Chemi-Con
- NJR / JRC
- NVE
- NXP Semiconductors
- OEG
- Omnivision
- ON Semiconductor
- Optek Technology
- Optrex
- OSRAM Opto Semiconductors
- OTAX
- Panasonic
- Peregrine(pSemi)
- Potter & Brumfield
- Power Integrations
- PowerStor
- Preci-Dip
- Prewell
- Products Unlimited
- Pulse Electronics
- PulseCore Semiconductor
- Qorvo
- Raychem
- Renesas Electronics
- RFMD
- Richtek Technology
- ROHM Semiconductor
- Rubycon
- Samsung Electro-Mechanics
- Samsung Semiconductor
- Schaffner
- Schrack
- Seiko Instruments, Inc. (SII)
- Semtech
- Sensata
- Seoul Semiconductor
- Sfernice
- Sharp Display
- Sharp Microelectronics
- Silicon Labs
- Siliconix
- Skyworks Solutions
- SoniCrest / JL World
- Spansion
- Sprague
- Stanley Electric
- STMicroelectronics
- Sunny Electronics
- Susumu (SSM)
- Taimag
- Taiyo Yuden
- TDK
- TDK-Lambda
- TE Connectivity
- Teccor
- Texas Instruments (TI)
- Thin Film
- Tianma Micro-electronics
- TOCOS
- TOKO
- Toshiba Electronic Components
- TT Electronics
- Tusonix
- TXC
- Tyntek
- Vishay
- Vishay Precision Group
- Vitramon
- Walsin Technology
- Weidmuller
- Welwyn
- Wickmann
- Winbond
- Xilinx
- Yageo
- Zetex Semiconductors
- ZJPT / Maojwei
News
Mono CODEC with 1W Output SPK-Amp; the AK4637 is suitable for IoT applications.
2015-11-06 | Return[Title] Low Power Audio 24-bit Mono CODEC with Microphone/Speaker Amplifiers
[Application]
IP Cameras, Digital still cameras, MFP (Multi-function Printer) and IoT (Wearable and Home automation etc)
[DESCRIPTION]
Since the market demand for single-chip recording/playback CODEC for potable and IoT equipment is increasing, AKM has developed the AK4637EN.
It is ideal for IoT (internet of things) or portable devices requiring a low-power audio 24-bit monaural CODEC with a microphone amplifier, speaker amplifier with built in regulators.
The AK4637EN improves its resolution to 24bit from 16bit and the speaker output power from its predecessor, the AK4633EN. Package size is also minimized and can be used as a monaural version of the AK4951EN.
Evaluation boards and samples are available now.
●1W Output SPK-Amp
The integrated monaural speaker amplifier is capable of 1W output power to directly drive an integrated speaker for playback requiring no external components.
●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 by “Wind Noise Reduction Filter”, “5-band Notch Filter” that allow for the removal of specific system tones/noises and a “Digital Automatic Level Control (ALC) Circuit” to optimizes recording levels.
The AK4637EN achieves very low-power consumption: 6.5mW in monaural recording mode and 11.6mW in speaker playback mode, improving battery life of mobile devices.
[Features]
1. Sampling Frequency: 8kHz~48kHz
2. Mono 24-bit ADC
- S/(N+D): 83dB, S/N: 88dB (MIC Gain=18dB)
- S/(N+D): 84dB, S/N: 95dB (MIC Gain=0dB)
3. Microphone Amplifier: +30dB ~ 0dB, 3dB step
4. Wind Noise Reduction Filter
5. 5-Band Notch Filter (available as Equalizer, switching Gain during operation is available)
6. High-performance Digital ALC (Automatic Level Control)
7. Digital Microphone Interface
8. Sidetone Mixer & Volume Control
9. Digital Volume Control for Output
10. Mono 24-bit DAC
11. 1W Output Mono Speaker Amplifier (with Line Output Switch)
12. Analog Mixing: BEEP Input
13. Regulator achieving high PSRR
14. PLL built-in Loop Filter corresponding various clock frequency
15. uP I/F: I2C-bus
16. Operating Temperature: -40 ~ +85℃
17. Power Supply
- Analog Power Supply (AVDD): 2.8 ~ 5.5V
- Digital Power Supply (DVDD): 1.6 ~ 1.98V
- Digital I/O Power Supply (TVDD): 1.6 or (DVDD-0.2) ~ 3.6V
18.Package: 20pin QFN (3mm × 3mm, 0.4mm pitch)
To obtain more information about the AK4637, please visit here.
About "Audio 2 Go"
Audio 2 Go™ products are designed for portable audio applications, including smartphones, tablet computers and media players, which provide feature-rich, single chip solution with low power consumption and high audio fidelity.
Source: http://www.akm.com/