W55MID35 Datasheet, PDF (8/10 Pages) List of Unclassifed Manufacturers – Transponder

W55MID35 DataSheet
Design Information
4.1 W55MID35 Reference Design
This W55MID35 application schematic is
subject to modify for target specification evaluation.
Some components are due to system specification
evaluation purpose only which will be removed
once the system evaluation is done. The magnetic
field coupling strength is subject to the appropriate
value of inductor and capacitor.
4.1.1 W55MID35 Demo Board
The value of "L" will depend on PCB coil layout and the value of "C" needs to fine-tune and matches the
magnetic field resonance center f_OP = 13.56MHz
fop
13.56MHz
.1.2 W55MID35 Application Schematic:
RS0
11 _{VDD COIL0} 8
RS1
RS2
RS3
C2
6
54
3
2
12
1
10
7
RS0
RS1
RS2
RS3
ROSP4T
NRST
DO
COIL1
VSS
9
RS4
C4 W55MID35
OPT
TAG ID DEPEND ON RS0~RS4 PAD BONDING TO VDD/VSS/FLOATING
OPT : VDD/VSS --> Unique-ID/Repeated-ID mode
C1 C3
PCB ANTENNA
47p 27p
WHS-55MID35.D4
Nuvoton Technology Corp., confidential
8
Revision: A5.0
Publish Date:
Mar. 2009