مدار مجتمع (آی سی) آی‌سی صوتی ویژه

CML MICROCIRCUITS CMX148Q3

Manufacturer	CML Microcircuits
Mfr. Part Number	CMX148Q3
Electland Part Code	171612
Electland Part Number	NYE_CMX148Q3
Category	Audio Special Purpose
Description	Audio Audio Signal Processor 1 Channel 48-VQFN (7x7)
Datasheet	Download

Product Attributes

Category	Integrated Circuits (ICs) Audio Special Purpose
function	Audio Signal Processor
Applications	Audio Systems
Number of Channels	1
interface	Serial
Voltage - Supply	3V~3.6V
Operating Temperature	-40℃~+85℃
Mounting Type	Surface Mount
Package / Case	48-VFQFN Exposed Pad
Supplier Device Package	48-VQFN (7x7)
type	Encoder;Processor
Features	On-chip digital gain;Mute control;Multi-channel audio
Packaging	VQFN-48(7x7)
Tariff Active	False
ReachStatus	REACH Unknown
RohsStatus	ROHS3 Compliant
MoistureSensitivityLevel	3 (168 Hours)
ExportControlClassNumber	5A991G
HtsusCode	8542.39.0060
Weight	0.354g

Introduction

CMX148 is a half-duplex audio, signalling and data processing IC for PMR systems, utilizing a host microcontroller to perform signalling including CTCSS/DCS encoding/decoding. The device is suitable for general leisure and professional PMR terminals. Comprehensive audio processing features include complete audio processing, filtering, companding, pre-emphasis or de-emphasis, and frequency inversion scrambling. CMX148 incorporates an FFSK/MSK data modem for packet or free-format data operation. Signal routing and filtering are included to assist host microcontroller-based signal encoding/decoding applications. This low-power PMR processor includes a DTMF encoder/decoder, a full suite of auxiliary ADCs and DACs, and dual synthesizer clock outputs. The device also features flexible power-saving modes, available in 48-pin VQFN and LQFP packages.

Features

Concurrent audio/signaling/data operations
Full audio band processing
Selectable audio processing sequence
Pre-emphasis and de-emphasis
Optional 2.55/3.0kHz filtering
Selectable audio HPF cutoff frequency
Compander
Limiter
Programmable voice scrambler
MSK/FFSK data modem with FEC, CRC, interleaving, and scrambling, supporting packet or free-format mode
DTMF and audio tone encoder/decoder
Host microcontroller signaling routing support
Sub-audible signaling filters for CTCSS and DCS
Dual auxiliary ADC with 4 multiplexed inputs
4 auxiliary DACs
Dual programmable system clock outputs
Tx output for single, two-point, or I/Q modulation
Microphone and discriminator analog inputs
Digital gain adjustment
Default 3.6864MHz crystal/clock
C-BUS serial interface to host microcontroller
Flexible power-saving modes
3.3V low-power operation
Compact VQFN and LQFP packages