RFID LF Module
Model :
PML125K
A reader with PML125K serves both as a magnetic field generator and a decoder to energize a tag and receive transmitted data from it. In other words, an AC power is generated across the coil whenever the magnetic filed pass through the antenna coil of tag. Then, the voltage will power up the tag to transmit its stored information back to the reader. It is so called backscattering. Signal transmission rate is around 1K bit to 4K bit per second. It is a form of modulated Signal. A reader through its coil antenna can receive these signals. Demodulation process followed, these signals are transformed to digital data strings for further decoding. By using PML125K, A variety of chip brands are supported; such as, EM, Microchip, Philips, Temic, and so forth. It will be your simple solution with low cost and less effort to implement your complex RF system.
| Product Name | RFID LF Module |
| Product No. | PML125K |
| Frequency band | 125 KHz |
| Baud-Rate | 9600, N, 8, 1 (customizable) |
|
Power supply |
DC 5V |
| Dynamic mode | 93 mA |
| Operating temperature | -30℃ ~ 70℃ |
| Storage temperature | -30℃ ~ 70℃ |
| Dimensions | 32 x 23.6 x 2.7mm (L x W x H) |
LF supported
TK4100
HCS410
EM4102
EM4200
EM4069
EM4305
EM4550
EM4450
Temic5530
Temic5577
Temic5557
Temic5777
HiTagⅠ
HiTagⅡ
HiTag S64
HiTag S256
HiTag S2048
PIN
Description
Pin name
Function
Min
Typ
Max
Unit
1
Data output supply
DATA
Digital output from
demodulation
3
5
5.5
V
2
Voltage(1)
VCC
Suppl voctage for
digital circuit
3
5
5.5
V
3
Input frequency
OSC-IN
Reference frequency
to internal circuit
4M
Hz
4
Ground(1)
GND(1)
Digital ground
V
5
Modularion input
WRITE
VL<0.3V, VH>VCC
5
V
6
Deliver output(1)
LT1
VDD-0.6V
V
7
Supply voltage(2)
VDD
Supply voltage for
analog circuit
3
9
12
V
8
Deliver input(1)
RT1
120
560
1.5K
9
Deliver output(2)
LT2
VDD-0.6V
V
10
Deliver input(2)
RT2
Same as RT1
11
Ground(2)
GND(2)
Analog ground
V
12
RF input
RF-IN
Resonent input
20Vp-p
450Vp-p
V
Purpose
WFE-125K-xx series provide either single direction or bidirection communication through contactless radio frequency (RF) wave. Amplitude Shift Keying (ASK) mode is employed as a modulation method to carrier signal in a radio frequency of 125K Hz. It is used to accomplish actual modulation of signal transmission from a tag to a reader in a speed fallen in 1K bit to 4K bit per second.
