Datasheet > EM4095

EM4095

更新时间： 2022-12-22 23:14:38

品牌	Logo	应用领域
EMMICRO		/
页数	文件大小	规格书
10页	206K
描述
Read/Write analog front end for 125kHz RFID Basestation

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EM4095 数据手册

EM MICROELECTRONIC - MARIN SA

EM4095

Read/Write analog front end for 125kHz RFID Basestation

Description

ꢀ

Data transmission by Amplitude Modulation with

externally adjustable modulation index using single

ended driver

The EM4095 (previously named P4095) chip is a CMOS

integrated transceiver circuit intended for use in an RFID

basestation to perform the following functions:

ꢀ

Multiple transponder protocol compatibility

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

EM4069….)

antenna driving with carrier frequency

AM modulation of the field for writable transponder

AM demodulation of the antenna signal modulation

induced by the transponder

ꢀ

Sleep mode 1µA

USB compatible power supply range

40 to +85°C temperature range

Small outline plastic package SO16

communicate with a microprocessor via simple interface.

Features

Applications

ꢀ

Integrated PLL system to achieve self adaptive

carrier frequency to antenna resonant frequency

No external quartz required

ꢀ Car immobiliser

ꢀ Hand held reader

ꢀ Low cost reader

ꢀ

100 to 150 kHz carrier frequency range

Direct antenna driving using bridge drivers

Data transmission by OOK (100% Amplitude

Modulation) using bridge driver

Typical Operating Configuration

Pin Assignment

Read Only Mode

RDY/CLK

SO16

C_DC2

DC2

VSS

RDY/CLK

C_FCAP

FCAP

SHD

DEMOD_OUT

ANT1

DVDD

DVSS

SHD

DEMOD_OUT

+5V

⁴EM4095

P4095

L_A

MOD

C_RES

C_AGND

MOD

+5V

AGND

CDEC_IN

CDEC_OUT

ANT2

VDD

C_DV1

C_DV2

C_DEC

DEMOD_IN

Fig. 1

Fig. 3

Read/Write Mode

RDY/CLK

C_DC2

C_FCAP

SHD

DEMOD_OUT

+5V

L_A

C_RES

⁴EM4095

P4095

MOD

C_AGND

+5V

C_DV1

C_DEC

C_DV2

Fig. 2

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