FACT SHEET | EM4095
Subject to change without notice
Version 1.0, 7-Oct-14
Copyright © 2014, EM Microelectronic-Marin SA
www.emmicroelectronic.com
Read/Write analog front
end for 125 kHz RFID
Basestation
General Description
Features
The EM4095 (previously named P4095) chip is a CMOS integrated
transceiver circuit intended for use in an RFID basestation to perform
the following functions:
Iantenna driving with carrier frequency
IAM modulation of the field for writable transponder
IAM demodulation of the antenna signal modulation induced by the
transponder
I Integrated PLL system to achieve self adaptive
carrier frequency to antenna resonant frequency
I No external quartz required
I 100 to 150 kHz carrier frequency range
I Direct antenna driving using bridge drivers
communicate with a microprocessor via simple interface.
I Data transmission by OOK (100% Amplitude
Modulation) using bridge driver
Applications
I Data transmission by Amplitude Modulation with
externally adjustable modulation index using single
ended driver
I Car immobiliser
I Multiple transponder protocol compatibility
(Ex: EM4102, EM4200, EM4450 and EM4205/
EM4305)
I Hand held reader
I Low cost reader
I Sleep mode 1µA
Typical Operating Configuration
I USB compatible power supply range
Read Only Mode
I -40 to +85°C temperature range
RDY/CLK
+5V
16
2
15
3
14
4
13
LA
CRES
+5V
CDV1
I Small outline plastic package SO16
1
EM4095
5
12
6
11
7
10
8
9
CDC2
CFCAP
Pin Assignment
SHD
DEMOD_OUT
MOD
µP
SO16
CAGND
VSS
DC2
CDEC
CDV2
RDY/CLK
Read/Write Mode
FCAP
ANT1
SHD
DVDD
DEMOD_OUT
RDY/CLK
16
CDC2
2
15
CFCAP
3
14
1
+5V
4
LA
5
CRES
CDV1
+5V
EM4095
13
12
6
11
7
10
8
9
SHD
DEMOD_OUT
MOD
CAGND
CDEC
CDV2
µP
DVSS
MOD
ANT2
AGND
VDD
DEMOD_IN
CDEC_IN
CDEC_OUT