CMX469AE2-TR1K

Overview

The CMX469AE2-TR1K is a CMOS LSI full-duplex fast frequency-shift keying (FFSK) modem integrated circuit manufactured by CML Microcircuits. It supports selectable data rates of 1200, 2400, and 4800 baud. The device operates on a single power supply ranging from 2.7V to 5.5V. It utilizes a common crystal oscillator for clock frequencies of 1.008MHz or 4.032MHz to provide baud rate, transmit frequency, and receive/transmit synchronization. The component includes carrier detection and receive clock recovery circuits, which can be output via dedicated pins. It is housed in a 24-TSSOP package with dimensions of 0.173 inches (4.40mm) width.

Feature Summary

• Integrates receive and transmit paths with bandpass filters to ensure optimal signal conditions under adverse conditions.
• Provides high sensitivity and low bit error rates without requiring microprocessor software control.
• Includes built-in carrier detection and receive clock recovery circuits available as output pins.

Applications

• Data-over-radio systems
• Private Mobile Radio (PMR) and cellular radio signals
• Automatic vehicle positioning links using differential GPS

Procurement Notes

Verify the specific suffix TR1K indicates tape-and-reel packaging containing 1000 units per standard manufacturer package. Confirm RoHS3 compliance status and MSL rating during sourcing. Ensure the supplier provides official datasheets matching the CMX469A series specifications to validate electrical parameters before procurement.

Selection Notes

Select this component when designing full-duplex FFSK communication links requiring 1200 to 4800 baud rates. Choose the 24-TSSOP package variant if surface-mount assembly with a 4.40mm width constraint is required. Verify that the system power supply falls within the 2.7V to 5.5V operating range and that external crystal options align with the 1.008MHz or 4.032MHz input requirements.

Part Context

This part belongs to the CMX469 series of telecom interface ICs designed for low-power wireless data transmission. The AE2 designation typically denotes specific package and environmental variants within the broader CMX469A family, which also includes SOIC-20 configurations like the CMX469AD3. These devices are engineered for portable applications where minimal external components and low current consumption are critical design factors.

Replacement Considerations

The CMX469AD3 serves as a functional alternative within the same series but utilizes an SOIC-20 package instead of TSSOP-24. Verify pin compatibility and physical footprint differences before substitution. Other CMX469 variants may share identical electrical characteristics but differ in packaging or temperature ranges.