EM4095 datasheet(1/10 Pages) EMMICRO

Part #	EM4095

Description	Read/Write analog front end for 125kHz RFID Basestation

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Manufacturer	EMMICRO [EM Microelectronic - MARIN SA]

Direct Link	http://www.emmicroelectronic.com

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EM4095

Copyright

 2002, EM Microelectronic-Marin SA

1

www.emmicroelectronic.com

Read/Write analog front end for 125kHz RFID Basestation

Description

The EM4095 (previously named P4095) chip is a CMOS

integrated transceiver circuit intended for use in an RFID

basestation to perform the following functions:

-

antenna driving with carrier frequency

-

AM modulation of the field for writable transponder

-

AM demodulation of the antenna signal modulation

induced by the transponder

communicate with a microprocessor via simple interface.

Features

Integrated PLL system to achieve self adaptive

carrier frequency to antenna resonant frequency

No external quartz required

100 to 150 kHz carrier frequency range

Direct antenna driving using bridge drivers

Data transmission by OOK (100% Amplitude

Modulation) using bridge driver

Data transmission by Amplitude Modulation with

externally adjustable modulation index using single

ended driver

Multiple transponder protocol compatibility

(Ex: EM400X, EM4050, EM4150, EM4070, EM4170,

EM4069….)

Sleep mode 1µA

USB compatible power supply range

40 to +85°C temperature range

Small outline plastic package SO16

Applications

Car immobiliser

Hand held reader

Low cost reader

Typical Operating Configuration

Read Only Mode

µP

+5V

L

A

C

DV1

C

DV2

C

RES

P4095

2

3

4

5

6

7

8

1

15

14

13

12

11

10

9

16

+5V

RDY/CLK

C

DEC

C

AGND

MOD

DEMOD_OUT

SHD

C

DC2

C

FCAP

Fig. 1

Read/Write Mode

µP

+5V

L

A

C

DV1

C

DV2

C

RES

C

DEC

C

AGND

P4095

2

3

4

5

6

7

8

1

15

14

13

12

11

10

9

16

+5V

MOD

DEMOD_OUT

SHD

C

DC2

C

FCAP

RDY/CLK

Fig. 2

Pin Assignment

SO16

VSS

RDY/CLK

ANT1

DVDD

DVSS

ANT2

DC2

FCAP

SHD

DEMOD_OUT

MOD

AGND

VDD

CDEC_IN

DEMOD_IN

CDEC_OUT

Fig. 3

EM MICROELECTRONIC - MARIN SA

EM4095

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EM4095 Datasheet(PDF) 1 Page - EM Microelectronic - MARIN SA

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