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What is H4001?

This electronic component, produced by the manufacturer "EM Microelectronic", performs the same function as "READ-ONLY CONTACTLESS IDENTIFICATION DEVICE".


H4001 Datasheet PDF - EM Microelectronic

Part Number H4001
Description READ-ONLY CONTACTLESS IDENTIFICATION DEVICE
Manufacturers EM Microelectronic 
Logo EM Microelectronic Logo 


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®
EM MICROELECTRONIC-MARIN SA
H4001
READ-ONLY CONTACTLESS
IDENTIFICATION DEVICE
Features
64 bit memory array laser programmable
Wide dynamic range due to on chip buffer
capacitance & voltage limiter on chip.
Full wave rectifier on chip
Big modulation depth due to a low impedance
modulation device
50'000 baud reading speed at 3 MHz
Very small chip size convenient for implantation
Unsensitive close to metal
Large distance even without resonance capacitor
No external buffer capacitance needed due to low
power consumption
Typical Operating Configuration
COIL 1
LC
H4001
COIL 2
Description
The H4001 is a CMOS integrated circuit for use in
transponders. The circuit is powered by an external
coil placed in a magnetic field, and gets its clock from
the same field via one of the coil terminals. The other
coil terminal is affected by the modulator, turning on
and off the modulation current in order to send back
the 64 bits of information contained in a factory
pre-programmed memory array.
Typical value of inductance at 125 KHz is 2 mH
The capacitor is adjusted to the resonance
Fig. 1
The programming of the chip is performed by laser
fusing of polysilicon links in order to store a unique Pin Assignment
code on each chip.
The serial output data string contains a 9 bits header,
40 bits of data, 14 parity bits, and 1 stop bit.
Due to the low power consumption of the logic core,
no supply buffer capacitor is required. Only an external
coil is required to obtain the chip function. A parallel
capacitor adjusted with the coil to obtain resonnance,
will increase the read distance.
COIL 2
COIL 1
Applications
Industrial transponder
Animal transponder
ID Cards
Serial Number Identification ROM
COIL 1
COIL 2
coil terminal/ clock input
coil terminal/ data transmisssion
Fig. 2
1

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H4001 equivalent
®
EM MICROELECTRONIC-MARIN SA
H4001
Control Logic
Two mask programmed versions of logic are available. The first one will modulate the amplitude of the magnetic field
with a bit rate corresponding to 64 periods of the field frequency (Manchester coding). The second version is using
half of the field frequency to transmit data by shifting the signal phase (PSK coding).
One of the coil terminals (COIL1 in Fig.6) is used to generate the clock signal for the logic. The output of the clock
extractor drives a sequencer providing all necessary signals to address the Memory Array, and serially output the
data.
PSK version
The serial data output of the Memory array connects the modulation control to the output or inverted output of a
flip-flop which input is the signal from the clock extractor.
When a logic 0 is output, the modulation control signal is changed to the other output of the flip-flop, and when a logic
1 is output, the modulation control signal remains on the same flip-flop output.
Data Modulator
The data modulator is controlled by the signal Modulation Control (see above fig. 4 & 5) in order to induce a high
current on COIL_2 terminal when this signal is at logic 0. This will affect the magnetic field according to the data
stored in the Memory Array.
Package Information
PCB
4.0 mm
1.0 mm
1206
EM
DIP 8 / SO8
COIL1
H4001
COIL2
*
* Max. thickness depending on utilized capacitor
Ordering Information
The H4001 is available in the following packages
Fig. 7
DIP 8-pin package H4001 8P
SO 8-pin package H4001 8S
PCB 2 connections H4001 PCB
Chip form and others on request
EM Microelectronic-Marin SA cannot assume responsibility for use of any circuitry described other than circuitry entirely embodied
in an EM Microelectronic-Marin SA product. EM Microelectronic-Marin SA reserves the right to change the circuitry and specifica-
tions without notice at any time. You are strongly urged to ensure that the information given has not been superseded by a more
up-to-date version.
© 1996 EM Microelectronic-Marin SA 3/96 Rev. E/127
EM Microelectronic-Marin SA CH-2074 Marin, Switzerland,Tel. +41 32 755 51 11, Fax +41 32 755 54 03
5


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Part Details

On this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for H4001 electronic component.


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