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Product Detailed Parameters
- Description：BASEBAND PROCESSOR IC FOR PMR AN
- Series：-
- Mfr：CML Micro
- Package：Tube
- Function：Baseband Processor
- Frequency：-
- 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
- Grade：-
- Qualification：-
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Overview
The CMX881E1 is a half-duplex audio and signalling processor manufactured by CML Microcircuits. It integrates sub-audio signalling capabilities and an FSK modem for private mobile radio applications. The device operates on a supply voltage range of 2.7V to 5.5V. It is housed in a 28-TSSOP package with a width of 4.40mm. The component supports surface mount installation and is designed for general RF baseband processing tasks.
Feature Summary
- Integrates half-duplex audio processing with sub-audio signalling functions
- Includes built-in FSK modem capability for data transmission
- Supports wide supply voltage operation from 2.7V to 5.5V
Applications
- Private Mobile Radio (PMR) systems
- Half-duplex communication devices
- Sub-audio signalling implementations
- FSK modem applications
Procurement Notes
Verify the specific suffix E1 against official CML Micro documentation to confirm pinout and electrical characteristics. Ensure the 28-TSSOP package dimensions match the design requirements. Check RoHS compliance status and moisture sensitivity level before assembly. Confirm availability through authorized distributors as lead times may vary.
Selection Notes
Select this component for designs requiring integrated audio, signalling, and FSK modulation in a single chip. Consider the 2.7V to 5.5V operating range for power supply flexibility. Evaluate the 28-TSSOP footprint for PCB layout constraints. Compare against other CMX series processors if full-duplex or different modulation schemes are required.
Part Context
The CMX881E1 belongs to the CMX881 family of baseband processors from CML Microcircuits. These components are specialized for PMR applications, combining audio and data processing functions. The E1 suffix typically denotes a specific package variant within the product line, differing from other suffixes that may indicate different thermal or mechanical specifications.
Replacement Considerations
Consult official CML Micro substitution guides for direct replacements. Verify compatibility with existing firmware and hardware interfaces when considering alternative models.
