P4095 EM Microelectronic, P4095 Datasheet

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P4095

Manufacturer Part Number
P4095
Description
P4095 Read/write Analog Front End For 125khz Rfid Basestation
Manufacturer
EM Microelectronic
Datasheet
P4095
Features
Description
The P4095 chip is a CMOS integrated transceiver
circuit intended for use in an RFID basestation to
perform the following functions:
Applications
-
-
-
-
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: H400X, V4050, P4150, V4070, P4170,
P4069….)
Sleep mode 1µA
USB compatible power supply range
-40 to +85°C temperature range
Small outline plastic package SO16 or PSOP2 16
Car immobiliser
Hand held reader
Low cost reader
antenna driving with carrier frequency
AM
transponder
AM
modulation induced by the transponder
communicate with a microprocessor via simple
interface.
modulation
demodulation
Read/Write analog front end for 125kHz RFID Basestation
of
of
the
the
field
antenna
EM MICROELECTRONIC-MARIN SA
for
writable
signal
Typical Operating Configuration
Pin assignment
C
C
C
C
DV1
DV2
DV1
DV2
L
L
DEMOD_IN
A
A
C
C
RDY/CLK
+5V
+5V
+5V
+5V
RES
RES
DVDD
DVSS
ANT1
ANT2
VSS
VDD
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
Read / Write Mode
RDY/CLK
RDY/CLK
Read Only Mode
P4095
P4095
© EM Microelectronic-Marin SA, 06/2000, Rev. C/296
SO16
16
15
14
13
12
11
10
16
15
14
13
12
11
10
9
9
DEMOD_OUT
DEMOD_OUT
MOD
MOD
SHD
SHD
C
C
C
C
C
C
C
C
DC2
FCAP
DEC
DC2
FCAP
DEC
AGND
AGND
DC2
FCAP
SHD
DEMOD_OUT
MOD
AGND
CDEC_IN
CDEC_OUT
µP
µP
1

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P4095 Summary of contents

Page 1

... USB compatible power supply range • -40 to +85°C temperature range • Small outline plastic package SO16 or PSOP2 16 Description The 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 - ...

Page 2

... V Transceiver R/W configuration RDY/CLK +5V 4 P4095 RES 6 + DV1 8 C DV2 Signal on Transceiver coil Signal on Transponder coil RF Carrier Data P4095 Symbol Min. Typ. Max. T -40 +110 J V 4 100 125 150 RES I 250 ANT * 100 * * 6 ...

Page 3

... RDY/CLK driver output resistance AM demodulation DEMOD_IN common mode range DEMOD_IN input sensitivity Note 1: AGND is a P4095 internal reference point. Any external connection except specified capacitor to V device malfunction. Note 2: Modulating signal 2Khz square wave on 125 kHz carrier, total signal inside V Vsense ...

Page 4

... Q of antenna). See also Application Notes. © EM Microelectronic-Marin SA, 06/2000, Rev. C/296 4 Symbol Test Conditions T set T mdon antenna circuit specifications: Q=15,F RES =125Khz modulation index: 100 Modulating signal 2Khz square wave 10mVpp T rec Note 1 P4095 Typ Max Units µs 40 100 µs 400 500 µs ...

Page 5

... BIAS & AGND BIAS & to all blocks AGND LOCK LOOP VCO & FILTER SEQUENCER HOLD FILTER CDEC_OUT CDEC_IN DC2 PWR: power supply IPU: input with internal pull up P4095 RDY/CLK SHORT DETECTION & READY DVDD ANT1 ANTENNA DRIVERS ANT2 DVSS DMOD_OUT COMPARATOR Type GND O O ...

Page 6

... Functional Description General The P4095 is intended to be used with an attached antenna circuit and a microcontroller. Few external components are needed to achieve DC and RF filtering, current sensing and decoupling. A stabilised power supply has to be provided. Please refer to P4095 Application Notes for advice. Device operation is controlled by logic inputs SHD and MOD ...

Page 7

... C RES C DV1 C DV2 Figure 1 presents P4095 used in Read Only mode. Pin MOD is not used recommended to connect it to VSS. Figure 2 presents typical R/W configuration for OOK µP communication protocol reader to transponder (eg. P4150 recommended to be used with low Q factor antennas (up to 15). ...

Page 8

... The signal controlling NMOS gate has to be put low FCAP synchronously with signal MOD, but it can be put high only after the amplitude on antenna has µP recovered after modulation. AGND PCB Layout DEC Refer to "P4095 Application Note". R1 DC2 FCAP µP AGND DEC R1 P4095 ...

Page 9

... Package and Ordering Information Dimensions of SOIC 16 Package Figure 7 Ordering Information The P4095 is available in the following package: Type Package P4095-16S SOIC 16-150 When ordering, please specify complete part number. (table in millimeters) Symbol P4095 Common Dimensions Min Nom Max 1 ...

Page 10

... DV 2 (2) calculated Power dissipation is composed of power dissipated on ANT drivers and internal power consumption: (3) P Temperature increase of die due to power dissipation is: Where R ( (5) P4095 I = ANT V ANTpp π has to be inside common mode DMOD_INpp ...

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