SLRC400 Datasheet, PDF (109/130 Pages) NXP Semiconductors – I·CODE Reader IC

Philips Semiconductors
I•CODE Reader IC
Product Specification Rev. 2.0 November 2001
SL RC400
17 TYPICAL APPLICATION
17.1 Circuit Diagram
The figure below shows a typical application, where the antenna is direct connected to the SL RC400:
DVDD
Reset
AVDD TVDD
DVDD
Control Lines
RSTPD
AVDD TVDD
TX1
µProcessor
Data Bus
IRQ
IRQ
TVSS
SL RC400
TX2
RX
DVSS OSCIN OSCOUT AVSS
VMID
15 pF
13.56 MHz
15 pF
C4
100 nF
L0
C0
C1
C2a
C0
L0
C2b
C1
R1'
R1
C3
R2
Figure 17-1: Circuit Diagram for Application Example: Direct Matched Antenna
The matching circuit consists of an EMC low pass filter, a receiving circuit, an antenna matching circuit and
the antenna itself.
For more detailed information about designing and tuning an antenna please refer to chapter 17.3.1.
109
Preliminary