مدار مجتمع (آی سی) آی‌سی صوتی ویژه

AKM AK2347B

Manufacturer	AKM
Mfr. Part Number	AK2347B
Electland Part Code	171687
Electland Part Number	NYE_AK2347B
Category	Audio Special Purpose
Description	Audio Audio Signal Processor Channel 24-SSOP
Datasheet	Download

Product Attributes

Category	Integrated Circuits (ICs) Audio Special Purpose
function	Audio Signal Processor
Applications	Signal Processing
interface	Serial
Voltage - Supply	2.7V~3.3V
Operating Temperature	-40℃~+85℃
Mounting Type	Surface Mount
Package / Case	24-SSOP (0.209", 5.30mm Width)
Supplier Device Package	24-SSOP
type	Processor
Features	On-chip digital gain;Mute control
Packaging	SSOP-24
Tariff Active	False
ReachStatus	REACH Unknown
RohsStatus	ROHS3 Compliant
MoistureSensitivityLevel	2 (1 Year)
ExportControlClassNumber	EAR99
HtsusCode	8542.39.0090
Weight	0.0005g

Introduction

AK2347B includes audio filter, limiter, splatter filter, compandor, scrambler, which is highly integrated two-way radio baseband functions for FRS and LMR. Audio high-pass filter shows a high attenuation in magnitude response characteristics under 250Hz that supports to eliminate a subaudio tone clearly. TX limiter for deviation control has a limiting level adjuster by applying a DC voltage via external components. Splatter filter has the magnitude response for narrowband (fc = 2.55kHz) and wideband (3.0kHz) to meet various regulatory agencies in the world wide. Compandor is no adjustment type because it includes all parametric components inside the chip. Scrambler circuit is composed of frequency inversion circuit by double balanced mixer that has 3.388kHz and 3.290kHz carrier clock. Sub-Audio filter with level adjuster is available for pre- or post-filter for CTCSS and DCS. There are four signal level adjusters for microphone, modulator and demodulator sensitivity by digital controlled amplifier (volume).

Features

Audio processing
TX and RX amplifier
Pre/De-emphasis circuit
Compressor and Expander with no external components
Scrambler and De-scrambler in frequency inversion type (3.388kHz or 3.290kHz)
Limiter with level adjuster
Splatter filter for wide and narrow band
Digital controlled amplifier for microphone, modulator and demodulator sensitivity
Sub-Audio filter with level adjuster for CTCSS and DCS
Low power supply operation: 2.7 to 3.3V
Wide range operating for temperature: -40 to 85°C
Oscillator circuit for 3.6864MHz and 3.579545MHz crystal
Serial control interface operation
Compact plastic packaging, 24-pin SSOP