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Product Detailed Parameters
- Description：BASEBAND PROCESSOR IC FOR PMR AN
- Series：-
- Mfr：CML Micro
- Package：Tape & Reel (TR),Cut Tape (CT)
- 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-TR1K is a half-duplex audio and signalling processor IC manufactured by CML Micro. 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. This specific part number indicates the component is supplied in a tape and reel format, containing 1,000 units per standard manufacturer packaging.
Feature Summary
- Integrates half-duplex audio processing with sub-audio signalling functions
- Includes built-in FSK modem capability for data transmission
- Designed specifically for PMR (Private Mobile Radio) baseband applications
Applications
- Private Mobile Radio (PMR) systems
- Half-duplex voice communication devices
- Sub-audio signalling implementations
- FSK modem integration in radio transceivers
Procurement Notes
Verify that the suffix TR1K corresponds to the 1,000-unit tape and reel packaging configuration rather than tube packaging. Confirm the 28-TSSOP footprint matches the design requirements. Ensure the 2.7V to 5.5V supply range aligns with the target system power architecture. Cross-reference the RoHS3 compliance status if environmental regulations apply to the final assembly.
Selection Notes
Select this component when a combined audio processor and FSK modem solution is required for PMR designs. The integrated nature reduces external component count compared to discrete solutions. Consider the 28-TSSOP package size constraints during PCB layout. Verify compatibility with the specific sub-audio signalling standards required by the target radio protocol.
Part Context
This part belongs to the CMX881 family of baseband processors from CML Microcircuits. The E1 suffix typically denotes specific electrical or packaging variations within the series. The TR1K variant specifies the bulk tape and reel delivery method, distinguishing it from cut-tape or tube options. It serves as a core signal processing element for analog and digital hybrid radio architectures.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Designers should consult official CML Micro cross-reference guides for direct replacements.
