LMX9820ASM/NOPB

RF Transceiver ICS Overview

The LMX9820ASM/NOPB is a highly integrated Bluetooth Serial Port Module manufactured by Texas Instruments. It combines a radio, baseband controller, and memory on an FR4 substrate within a 116-pin LTCC package. The device supports JTAG, UART, and USB serial interfaces with a supply voltage range of 2.85V to 3.6V. Operating currents are specified at 62mA for receiving and 68mA for transmitting. It operates within a standard commercial temperature range.

RF Transceiver ICS Feature Summary

• Highly integrated design combining radio, baseband controller, and memory
• Supports point-to-point and point-to-multipoint link management
• Compatible with multiple serial interfaces including JTAG, UART, and USB

RF Transceiver ICS Applications

• Bluetooth wireless communication modules
• Serial port emulation devices
• Embedded wireless data transfer systems

RF Transceiver ICS Procurement Notes

Verify the specific revision level and manufacturing date code upon procurement, as this component originates from National Semiconductor which has been acquired by Texas Instruments. Confirm that the 116-LTCC package matches your PCB footprint requirements. Ensure compatibility with existing firmware protocols supporting the specified serial interfaces before finalizing orders.

RF Transceiver ICS Selection Notes

Select this module when a compact, fully integrated Bluetooth solution is required for serial data transmission. Consider the 116-pin LTCC package size and the specific current consumption profiles during active reception and transmission phases. Verify that the operating voltage range aligns with the system power supply architecture and that the supported serial interfaces meet the host controller's connectivity needs.

RF Transceiver ICS Part Context

This component belongs to the Bluetooth Serial Port Module family, originally developed by National Semiconductor and now maintained under Texas Instruments. It serves as a complete wireless communication subsystem, eliminating the need for separate RF and baseband components in embedded applications requiring reliable short-range wireless connectivity.

RF Transceiver ICS Replacement Considerations

The datasheet indicates the LMX9820ASM variant is obsolete and not in production. No direct replacement part numbers are provided in the available documentation. Engineers should evaluate newer Bluetooth modules from Texas Instruments or other manufacturers that offer updated specifications and availability.