EM9203- Proprietary Protocols

1Volt, 2Mbps, 2.4GHz GFSK Transceiver - Ultra-Low Power

General Description

The EM9203 is a 1Mbps or 2Mbps low-power, low-voltage, completely-integrated 2.4GHz ISM band RF transceiver ideal for battery operated wireless applications such as wireless sensors and control, audio streaming, human interface devices, and security networks. The EM9203’s built-in baseband processor (with link-layer) permits implementation of optimized proprietary wireless protocol links in the license-free 2.4000GHz to 2.4835GHz ISM band. It includes a low-IF receiver architecture and uses GFSK modulation compliant with the emerging Bluetooth Low Energy (4.0) standard. An industry-standard SPI interface provides for simple control of the baseband using an external host controller. The EM9203 Version 01 features an integrated step-up (boost) DC/DC converter that allows operation with supply voltages as low as 0.8V with an external coil. This converter is designed to support an additional load such as a low-power microcontroller (host) and interface circuits with a dedicated application profile. The EM9203 Version 02 can be supplied by a 3V battery or other voltage source.

Available chip versions:

  • Version 01: with DC/DC converter for use with 1.5V battery (down to 0.8V)
  • Version 02: without DC/DC converter for use with any voltage from 1.9V to 3.6


  • Remote sensing and control
  • Wireless audio streaming
  • Wireless mice, keyboards, toys etc.
  • Wireless watch sensors, sports equipment

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Low Voltage:

  • Single-cell, 1.5V battery operation (down to 0.8V); or
  • 3V battery operation (1.9V to 3.6V)

Low Power:

  • 14mA in RX Mode (2Mbps)
  • 14mA in TX Mode (0 dBm output power, 2Mbps)
  • <3µA in Xtreme Mode (Version 01)
  • <1µA in Power-Down Mode (Version 02)

High Performance:

  • -85dBm sensitivity at 2Mbps
  • Programmable output power from -18dBm to +3dBm

Compact radio design with low BOM cost:

  • MLF28 4mm x 4mm package
  • Operating Temperature: -40°C to +85°C
  • Direct antenna interface
  • Integrated DC/DC converter (Version 01)
  • Supply Voltage Level Detector (SVLD)
  • 26MHz crystal oscillator, frequency tolerance ±50ppm

Flexible interface:

  • Microcontroller compatible SPI interface
  • FPGA access to modulator and demodulator
  • External PA control signal available
EM9203 Fact Sheet (78.79 KB)78.79 KB
EM9203 Data Sheet (1.59 MB)1.59 MB