User guide

2
4983A–IND–02/07
ATA8403
2. Pin Configuration
Figure 2-1. Pinning TSSOP8L
ENABLE
3
4
2
1
VS
GND
XTAL
CLK
PA_ENABLE
8
7
6
5
ANT2
ANT1
Table 2-1. Pin Description
Pin Symbol Function Configuration
1CLK
Clock output signal for microconroller
The clock output frequency is set by the
crystal to f
XTAL
/4
2 PA_ENABLE
Switches on power amplifier, which is
used for ASK modulation
3
4
ANT2
ANT1
Emitter of antenna output stage
Open collector antenna output
100Ω
100Ω
CLK
VS
50 kΩ
20 µA
U
REF
= 1.1V PA_ENABLE
ANT1
ANT2