CMX7164L9

Overview

The CMX7164L9 is a multi-mode wireless data modem IC manufactured by CML Micro, housed in a 64-LQFP (10x10) package. It supports GMSK/GFSK, 2/4/8/16-FSK, 4/16/32/64-QAM, and V.23 modulation schemes with configurable symbol rates ranging from 1,200 to 20,000 symbols/s. The device operates on a 3V to 3.6V supply voltage and features Adaptive Coded Modulation (ACM), reconfigurable digital IF filters, and 128-byte FIFOs. It interfaces directly with zero-IF receivers via a high-performance I/Q interface and is controlled through a serial bus.

Feature Summary

• Supports multiple modulation schemes including GMSK, FSK variants, QAM, and V.23
• Features Adaptive Coded Modulation for dynamic block size and coding rate selection
• Includes reconfigurable digital IF filters and deviation control without manual trim
• Utilizes FirmASIC technology for custom modulation scheme flexibility

Applications

• High-performance narrowband data radio
• Telemetry, SCADA, and M2M data modems
• Satellite communications systems
• Software Defined Radio (SDR)
• Compliant channels from 6.25kHz to 25kHz

Procurement Notes

Verify the specific L9 suffix against official documentation to confirm package type and pinout compatibility. Ensure host controller firmware supports the required C-BUS or SPI master protocols for configuration. Confirm that the 3V to 3.6V power supply range aligns with system design requirements before integration.

Selection Notes

Select this component when a single hardware platform must support diverse communication standards via software reconfiguration. The integrated modem function eliminates the need for external codecs or DSP processing. Verify that the target application requires the specific 64-LQFP package form factor provided by the L9 variant.

Part Context

The CMX7164L9 belongs to the CMX7164 family of multi-mode wireless data modems. It shares core functionality with other variants like the CMX7164Q1 but differs in physical packaging. The L9 designation specifically indicates the 64-LQFP (10x10) surface-mount package, distinguishing it from smaller VQFN options within the same product line.

Replacement Considerations

CMX7164Q1: Direct functional equivalent in a different 64-VQFN package. CMX7164L9: Same part number; verify if distinct revisions exist. No other direct substitutes are documented.