CMX589AE2

Overview

The CMX589AE2 is a single-chip synchronous data pump and modem designed for wireless data applications, manufactured by CML Micro. It implements Gaussian Minimum Shift Keying (GMSK) baseband modulation with selectable BT values of 0.3 or 0.5. The device supports data rates ranging from 4kbps to 200kbps, determined by internal clock division controlled via ClkDivA and ClkDivB pins. It operates on a power supply voltage between 3.0V and 5.5V. Typical current consumption is 1.5mA at 3.0V/20kbps and 4.0mA at 5.0V/64kbps. The component is housed in a 24-pin TSSOP package.

Feature Summary

• Supports full or half-duplex operation with separate Tx and Rx Powersave inputs for low-power management.
• Features pin-programmable BT selection (0.3 or 0.5) to adapt transmit filter bandwidth to system requirements.
• Includes integrated Rx Control Inputs to facilitate acquisition, lock, and hold of received data signals.
• Provides an Rx S/N output pin to indicate the quality of the received signal.

Applications

• Cellular Digital Packet Data (CDPD)
• Mobitex Mobile Data System
• Spread Spectrum Data Links
• GPS/Differential GPS Wireless Links

Procurement Notes

Verify the specific ordering suffix E2 corresponds to the 24-pin TSSOP package configuration required for your design. Confirm that the RoHS status aligns with environmental compliance standards for your target market. Ensure the datasheet revision matches the manufacturing date code to avoid discrepancies in electrical specifications or pin definitions during the procurement process.

Selection Notes

Select this component when designing GMSK modems requiring data rates up to 200kbps. Ensure the external crystal frequency falls within the supported range of 1.0MHz to 16.0MHz for 5.0V operation. Verify that the application requires a non-DSP solution to leverage the low current consumption characteristics. Check if the TSSOP package dimensions fit the PCMCIA or portable form factor constraints.

Part Context

The CMX589AE2 belongs to the CMX589A family of GMSK modems. Other variants in this family include the CMX589AD5 (SSOP), CMX589AD2 (SOIC), and CMX589AP4 (PDIP). These parts share identical electrical functionality but differ in physical packaging to suit various PCB layout and assembly requirements.

Replacement Considerations

No direct public substitute part numbers are documented for the CMX589AE2. Designers should evaluate other CML Micro GMSK modems or general-purpose baseband processors if this component is obsolete or unavailable, ensuring compatibility with existing BT and data rate specifications.