P4095 EM Microelectronic, P4095 Datasheet - Page 5

• Manufacturer Part Number: P4095
• Description: P4095 Read/write Analog Front End For 125khz Rfid Basestation
• Manufacturer: EM Microelectronic

Block diagram
Pin Description
SO16 package
DMOD_IN
GND: reference ground
IPD:
AGND
FCAP
MOD
Pin
VDD
SHD
VSS
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
Name
VSS
RDY/CLK
ANT1
DVDD
DVSS
ANT2
VDD
DEMOD_IN
CDEC_OUT
CDEC_IN
AGND
MOD
DEMOD_OUT Digital signal representing the AM seen on the antenna
SHD
FCAP
DC2
input with internal pull down
to all blocks
to all blocks
to all blocks
SYNCHRO
SAMPLER
Description
Ready flag and clock output, driver for AM modulation
Antenna driver
Positive power supply for antenna drivers
Antenna driver
Positive power supply
Antenna sensing voltage
DC blocking capacitor connection « out »
DC blocking capacitor connection « in »
Analog ground
A High level voltage modulates the antenna
A High level voltage forces the circuit into sleep mode
DC decoupling capacitor
Negative power supply (substrate)
Negative power supply for antenna drivers
PLL Loop filter capacitor
CDEC_OUT
FILTER
LOOP
BIAS &
AGND
HOLD
PWR: power supply
IPU:
BIAS & AGND
CDEC_IN
to all blocks
SEQUENCER
VCO &
input with internal pull up
LOCK
FILTER
DC2
DETECTION
ANTENNA
DRIVERS
& READY
SHORT
COMPARATOR
© EM Microelectronic-Marin SA, 06/2000, Rev. C/296
ANA:
O:
RDY/CLK
DMOD_OUT
DVDD
analog signal
output
DVSS
ANT1
ANT2
P4095
Type
PWR
PWR
GND
GND
ANA
ANA
ANA
ANA
ANA
ANA
IPD
IPU
O
O
O
O
5