مدار مجتمع (آی سی) آی‌سی صوتی ویژه

AKM AK4637EN

Manufacturer	AKM
Mfr. Part Number	AK4637EN
Electland Part Code	171726
Electland Part Number	NYE_AK4637EN
Category	Audio Special Purpose
Description	Audio Interface 24 b 20-QFN (3x3)
Datasheet	Download

Product Attributes

Category	Integrated Circuits (ICs) Audio Special Purpose
interface	I2C;I2S
Voltage - Supply	1.6V~1.98V;1.6V~3.6V;2.8V~5.5V
Operating Temperature	-40℃~+85℃
Mounting Type	Surface Mount
Package / Case	20-WFQFN Exposed Pad
Supplier Device Package	20-QFN (3x3)
type	Encoder/decoder
Features	Built-in phase-locked loop;Master-slave clock negotiation;On-chip digital gain;Mute control
Resolution (Bits)	8kHz~48kHz
Voltage - Supply, Analog	2.8V ~ 3.5V
Voltage - Supply, Digital	1.6V ~ 1.98V
Number of ADCs / DACs	1 / 1
Sigma Delta	No
S/N Ratio, ADCs / DACs (db) Typ	88 / 97
Packaging	QFN-20(3x3)
Tariff Active	True
ReachStatus	REACH Unknown
RohsStatus	ROHS3 Compliant
MoistureSensitivityLevel	2 (1 Year)
ExportControlClassNumber	EAR99
HtsusCode	8542.39.0090
Weight	0.0005g

Introduction

The AK4637 is a low power 24-bit Mono CODEC with a microphone and speaker amplifiers. The AK4637 supports sampling frequency from 8kHz to 48kHz. It is suitable for a wide range of application from speech signal processing for narrowband, wideband and super wideband to sound signal processing for audio band. The input circuits include a microphone amplifier and a high performance digital ALC (automatic level control) circuit. In addition, the output circuits include a speaker amplifier with 1W output power. It is suitable for various products as well as portable applications with recording/playback function. The AK4637 are available in a small 20-pin QFN (3mm x 3mm, 0.4mm pitch: AK4637EN) package saving mounting area on the board.

Features

Recording Functions
Analog Input 1 Monaural Single-ended input or Differential input
Microphone Amplifier: +30dB~0dB, 3dB Step
Microphone Power Supply: 2.0V or 2.4V, Noise Level = -108dBV
Digital ALC (Automatic Level Control) - Setting Range: +36dB~ - 52.5dB, 0.375dB Step & Mute
ADC Performance: S/(N + D): 83dB, DR, S/N: 88dB (MIC - Amp = + 18dB) S/(N + D): 84dB, DR, S/N: 95dB (MIC - Amp = 0dB)
Wind Noise Reduction Filter
5 - Band Notch Filter: Include Dynamic Gain Control
Digital Microphone Interface
Playback Functions
Digital ALC (Automatic Level Control) - Setting Range: +36dB ~ - 52.5dB, 0.375dB Step & Mute
Sidetone Mixer & Volume Control (0dB ~ - 18dB, 6dB Step)
Digital Volume Control - +12dB ~ - 89.5dB, 0.5dB Step & Mute
Mono Speaker Amplifier (with Line Output Switch) - Speaker Amplifier Porformance: S/(N + D): 75dB@250mW, S/N: 97 dB - BTL Output - Output Power: 400mW@8Ω (AVDD = 3.38), 1W@8Ω (AVDD = 5V)
Analog Mixing: BEEP Input
Master Clock:
(1) PLL Mode Frequencies: 11.2896MHz, 12MHz, 12.288MHz, 13.5MHz, 24MHz, 27MHz (MCKI pin), 16fs, 32fs, 64fs (BICK pin)
(2) External Clock Mode Frequencies: 256fs, 384fs, 512fs or 1024fs (MCKI pin)
Sampling Frequencies
PLL Master Mode: 8kHz, 11.025kHz, 12kHz, 16kHz, 22.05kHz, 24kHz, 32kHz, 44.1kHz, 48kHz
PLL Slave Mode (BICK pin): 8kHz ~ 48kHz
EXT Master/Slave Mode: 8kHz ~ 48kHz (256fs, 384fs, 512fs), 8kHz ~ 24kHz (1024fs)
Audio Interface Format: MSB First, 2’s complement
ADC: DSP Mode, 16/24bit MSB justified, 16/24bit I2S
DAC: DSP Mode, 16/24bit MSB justified, 16bit LSB justified, 16/24bit I2S
μP I/F: I2C Bus (Ver 1.0, 400kHz Fast - Mode)
Operating Temperature: Ta = - 40~85°C
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
Package:
20 - pin QFN (3×3 mm, 0.4mm pitch)