TH72016_12 Datasheet, PDF (11/15 Pages) Melexis Microelectronic Systems – FSK/ASK Transmitter

4.6 Output Power Steps – FSK Mode
Power step
0
1
RPS / kΩ
<3
22
TH72016
433MHz
FSK/ASK Transmitter
2
3
4
56
120
not connected
4.7 Output Power Steps – ASK Mode
typical values at TA = 23 °C and VCC = 3 V; test circuit shown in Fig. 6
Power step
1
2
3
RPS / kΩ
2.4
2.8
3.5
R1 / kΩ
36
14
7
4
not connected
0
V_PSlow = voltage across RPS if ASK_DTA at 0V
V_PShigh = voltage across RPS if ASK_DTA at Vcc
V _PSlow
RPS R1
PSEL 6
RPS
V _PShigh
R1
Vcc
PSEL 6
If the transmitter is operated at any supply voltage V_cc, the values for R1 and RPS can be calculated as fol-
lows:
R₁
=
V_CC ⋅V_PSlow
I _PSEL ⋅V_PShigh
R_PS
=
R₁
V_PShigh
V_CC − V_PShigh
39010 72016
Rev. 009
Page 11 of 15
Data Sheet
Jan/12