TH72015_12 Datasheet, PDF (10/20 Pages) Melexis Microelectronic Systems – FSK/ASK Transmitter

4.5 AC Characteristics
TH72015
433MHz
FSK/ASK Transmitter
all parameters under normal operating conditions, unless otherwise stated;
typical values at T_A = 23 °C and V_CC = 3 V; test circuit shown in Fig. 18, f_c = 433.92 MHz
Parameter
Symbol
Condition
Min
Typ
Max
CW Spectrum Characteristics
Output power in step 0
(Isolation in off-state)
P_off ENTX=1
Output power in step 1
P₁ ENTX=1
-13
Output power in step 2
P₂ ENTX=1
-3.5
Output power in step 3
P₃ ENTX=1
2
Output power in step 4
P₄ ENTX=1
4.5
Phase noise
L(f_m) @ 200kHz offset
Spurious emissions according
to EN 300 220-1 (2000.09)
table 13
P_spur
47MHz< f <74MHz
87.5MHz< f <118MHz
174MHz< f <230MHz
470MHz< f <862MHz
B=100kHz
-70
-12
-10 ¹⁾
-3
-1.5 ¹⁾
3
4.5 ¹⁾
8
10 ¹⁾
-88
-83
-54
f < 1GHz, B=100kHz
-36
f > 1GHz, B=1MHz
-30
Start-up Parameters
Start-up time
t_on from standby to
transmit mode
0.8
1.2
Frequency Stability
Frequency stability vs. supply df_VCC
±3
voltage
Frequency stability vs.
df_TA crystal at constant
±10
temperature
temperature
1) output matching network tuned for 5V supply
Unit
dBm
dBm
dBm
dBm
dBm
dBc/Hz
dBm
dBm
dBm
ms
ppm
ppm
4.6 Output Power Steps
Power step
0
1
RPS / kΩ
<3
22
2
3
4
56
120
not connected
3901072015
Rev. 011
Page 10 of 20
Data Sheet
Jun/12