EM MICROELECTRONIC - MARIN SA
EM9201/02
World’s First Fully Integrated Single-Cell Battery
2.4 GHz Transceiver
Description
Features
ꢀ Single cell 1.5V battery operation (Alkaline AA, AAA)
ꢀ Operation down to VBAT = 0.8 V (for start-up --> 1.0V)
ꢀ 3 V Lithium battery as alternative
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.
ꢀ Bluetooth Low Energy-compliant GFSK modulation
ꢀ Low drift of PLL frequency by design
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.
ꢀ 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 Ω differential impedance of antenna port
ꢀ Low-cost 26MHz Xtal
ꢀ BLD function: battery level detection in accordance with
selected battery
ꢀ Current consumption (on VCC, VCC =2.1V, 2Mb/s )
12.5 mA in RX
11.5 mA in TX (0dBm output power)
3.0 µA
0.8 µA
in sleep-mode (DC/DC running on RCosc) 1)
in power-down mode (3V version, DC/DC off)
EM9201: up to 1 Mb/s on air data rate
EM9202: up to 2 Mb/s on air data rate
1) External load reduced to < 500µA
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
ꢀ MLF24 4x4 package
Applications
ꢀ Remote sensing in general
ꢀ Wireless mouse, keyboard etc.
ꢀ Wireless sensors in watches
ꢀ Wireless sports equipment
ꢀ Alarm and security systems
Typical Application Schematic
VSS_DCDC
SW_DCDC
VCC2
VBAT
XTAL1
Pin Assignment
XTAL2
VDD
CK_FPGA
DATA_FPGA
IRQ
SDO
SDI
CS
AVDD_PA
AVSS_PA
AVSS_RF
ANTP
CS
EM 9201/02
SCK
EM9201/02
SCK
SDI
VDD
ANTN
ANTP
ANTN
MLF24 4x4
VSS
AVSS_PA
AVDD_PA
SDO
VSS_DCDC
FPGA
BIAS_R
VSS
Step-up conversion option; for simplicity, not all supply pins indicated !
Phone: +41.32.755-5111, Fax: +41.32.755-5403
www.emmicroelectronic.com
info@emmicroelectronic.com
Copyright 2009, EM Microelectronic-Marin SA
Subject to change without notice
05/09 – rev. B
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