آر اف (فرکانس رادیویی) و بی‌سیم سایر آی سی‌ و ماژول‌های آر اف

CML MICROCIRCUITS CMX881E1

Manufacturer	CML Microcircuits
Mfr. Part Number	CMX881E1
Electland Part Code	277414
Electland Part Number	NYE_CMX881E1
Category	RF Misc ICs and Modules
Description	RF IC Baseband Processor General Purpose 2.7V ~ 5.5V Supply 28-TSSOP
Datasheet	Download

Product Attributes

Category	RF and Wireless RF Misc ICs and Modules
function	Baseband Processor
RF Type	General Purpose
Secondary Attributes	2.7V ~ 5.5V Supply
Mounting Type	Surface Mount
Package / Case	28-TSSOP (0.173", 4.40mm Width)
Supplier Device Package	28-TSSOP
Applications	General Purpose
Packaging	TSSOP-28
Tariff Active	True
ReachStatus	REACH Unaffected
RohsStatus	ROHS3 Compliant
MoistureSensitivityLevel	1 (Unlimited)
ExportControlClassNumber	5A991G
HtsusCode	8542.31.0050
Weight	0.5g

Introduction

A full-function half-duplex audio and signalling processor IC for both PMR and Trunked radio systems suitable for complex and simple end-designs. Under the control of the host μc, all voiceband requirements are catered for: voiceband and sub-audio filtering, pre/de-emphasis and audio routing and global level setting with single or two-point modulation in the transmit path. The combination of CTCSS and DCS functions and Selcall operation of this product offer, under software control, increased functionality, versatility and privacy. To cater for call setup and system signalling the CMX881 provides an embedded 1200/2400 bps MSK/FFSK free-format modem for text messaging/paging, passing GPS location data with checksum generation and reception and sync detection in the Rx path. With ultra low power requirements and graduated powersave, this product requires a smaller, lower-power μc than existing PMR or trunked radio solutions. It is available in compact SSOP and TSSOP packages.

Features

Automatic signal type scanning and IRQ on detection of valid Rx signals, level or RSSI
Tone generator for caller recognition tunes
Programmable powerdown control
Programmable signal detection thresholds
Low Power operation with ‘Zero Power’ mode
Uncommitted Aux ADC with switchable input to monitor signals
Meets ETS 300 086, MPT1327, PAA1382 and ETS 300 230 specifications etc. applications
Voice processing facilities, including Tx and Rx gain setting and voice/subaudio filtering
C-BUS serial host interface
RF interface allowing 1 or 2 point modulation
Programmable soft limiter
Programmable Selcall Codec
Zero ‘Talkdown’ CTCSS decoder performance prevents dropouts
DTMF transmitter
Standard (39-tone) CTCSS and 23/24 bit DCS Codecs
Robust half-duplex FFSK/MSK modem, 1200/2400bps with CRC and parity generator/checker, gets data through when signal is too degraded for voice – for text messaging/paging, location transfer