EM9201/02

Copyright © 2009, EM Microelectronic-Marin SA

Subject to change without notice

05/09 – rev. B

Phone: +41.32.755-5111, Fax: +41.32.755-5403

www.emmicroelectronic.com

info@emmicroelectronic.com

World’s First Fully Integrated Single-Cell Battery

2.4 GHz Transceiver

Description

The EM9201/02 is a low-voltage 2.4GHz transceiver IC

with built-in link-layer logic permitting proprietary wireless

links in the 2.400 … 2.485 GHz ISM band. It has a radio

core with a low-IF architecture and GFSK modulation

scheme being compliant with the emerging Bluetooth low

energy technology standard.

Control of the link-layer logic is possible though the SPI

interface using an external host-controller. An FPGA bridge

is included in the circuit such that with an external FPGA

any protocol compatible with the RF characteristics can

also be emulated through the SPI port of the EM9201/02.

The EM9201/02 can be operated from a single 1.5V battery

by making use of the on-chip step-up (boost) DC/DC

converter. This converter is designed to support an extra

load such as a low-power microcontroller (host) or sensor

interface circuit with a dedicated application profile.

The EM9201/02 can also operate without the DC/DC

converter, when supplied from a 3 V battery or any other

source such as an external LDO regulator. No external coil

is needed then.

EM9201: up to 1 Mb/s on air data rate

EM9202: up to 2 Mb/s on air data rate

Chip versions, programmable by metal mask option:

V1: with DC/DC converter for 1.5V battery

V2: w/o DC/DC converter for any voltages 1.9 – 3.6V

Typical Application Schematic

Features

Single cell 1.5V battery operation (Alkaline AA, AAA)

3 V Lithium battery as alternative

Bluetooth Low Energy-compliant GFSK modulation

Low drift of PLL frequency by design

On air data rate: 1Mb/s for EM9201, configurable 1Mb/s

or 2Mb/s for EM9202.

Programmable RF output level:

-20 dBm … + 4dBm in 8 steps

No antenna matching elements needed through

appropriate PCB antenna design :

200

differential impedance of antenna port

Low-cost 26MHz Xtal

BLD function: battery level detection in accordance with

selected battery

12.5 mA

in RX

11.5 mA

in TX (0dBm output power)

3.0 µA

in sleep-mode (DC/DC running on RCosc)

1)

0.8 µA

in power-down mode (3V version, DC/DC off)

MLF24 4x4 package

Applications

Remote sensing in general

Wireless mouse, keyboard etc.

Wireless sensors in watches

Wireless sports equipment

Alarm and security systems

Pin Assignment

EM 9201/02

MLF24 4x4

SDO

AVDD_PA

SDI

SCK

VDD

VSS

VSS_DCDC

AVSS_PA

ANTN

ANTP

AVSS_RF

CS

FPGA

VBAT

VCC2

SW_DCDC

IRQ

CS

SCK

SDI

SDO

XTAL1

XTAL2

VDD

AVDD_PA

AVSS_PA

ANTP

ANTN

BIAS_R

VSS

VSS_DCDC

EM9201/02

CK_FPGA

DATA_FPGA

Step-up conversion option; for simplicity, not all supply pins indicated !