Si4430/31/32-B1
10
Rev 1.1
Table 4. Transmitter AC Electrical Characteristics
1
Parameter
Symbol
Conditions
Min    Typ    Max    Units
TX Frequency
RangeSi4431/32
F
TX
240

930    MHz
TX Frequency
RangeSi4430
F
TX
900

960    MHz
FSK Data Rate
2
DR
FSK
0.123    
256    kbps
OOK Data Rate
2
DR
OOK
0.123    
40
kbps
Modulation Deviation
攆1
860960 MHz
?.625
?20    kHz
攆2
240860 MHz
?.625
?60    kHz
Modulation Deviation
Resolution
2
RES
    0.625    
kHz
Output Power
RangeSi4432
3
P
TX
+1

+20    dBm
Output Power
RangeSi4430/31
3
P
TX
8

+13    dBm
TX RF Output Steps
2
DP
RF_OUT
controlled by txpow[2:0]

3

dB
TX RF Output Level
2
Variation vs. Temperature
DP
RF_TEMP
40 to +85 癈

2

dB
TX RF Output Level
Variation vs. Frequency
2
DP
RF_FREQ
Measured across any one
frequency band

1

dB
Transmit Modulation
Filtering
2
B*T
Gaussian Filtering Bandwith Time
Product

0.5

Spurious Emissions
2
P
OB-TX1
P
OUT
= +13 dBm,
Frequencies <1 GHz


54    dBm
P
OB-TX2
112.75 GHz, excluding harmonics


54    dBm
Harmonics
2
P
2HARM
Using reference design TX matching
network and filter with max output
power. Harmonics reduce linearly with
output power.


42    dBm
P
3HARM


42    dBm
Notes:
1.  All specification guaranteed by production test unless otherwise noted. Production test conditions and max limits are 
listed in the "Production Test Conditions" section on page 14.
2. Guaranteed by qualification. Qualification test conditions are listed in the "Production Test Conditions" section on 
page 14.
3. Output power is dependent on matching components, board layout, and is measured at the pin.
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