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TH72036_12 Datasheet, PDF (11/15 Pages) Melexis Microelectronic Systems – FSK/ASK Transmitter | |||
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4.6 AC Characteristics
TH72036
868/915MHz
FSK/ASK Transmitter
Power step
0
1
2
3
4
RPS / kâ¦
<3
22
56
120
not connected
4.7 Output Power Steps â ASK Mode
typical values at TA = 23 °C and VCC = 3 V; test circuit shown in Fig. 6
Power step
1
2
3
RPS / kâ¦
2.4
2.8
3.5
R1 / kâ¦
36
14
7
4
not connected
0
VPSlow = voltage across RPS if ASK_DTA at 0V
VPShigh = 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 Vcc, the values for R1 and RPS can be calculated as fol-
lows:
R1
=
VCC â
VPSlow
I PSEL â
VPShigh
RPS
=
R1
VPShigh
VCC â VPShigh
3901072036
Rev. 009
Page 11 of 15
Data Sheet
Jun/12
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