Si4012-C1-GT Silicon Laboratories Inc, Si4012-C1-GT Datasheet - Page 5

• Manufacturer Part Number: Si4012-C1-GT
• Description: RF Transmitter 27-960 MHz RF Transmitter
• Manufacturer: Silicon Laboratories Inc

Table 4. Si4012 RF Transmitter Characteristics
(TA = 25° C, VDD = 3.3 V, RL = 550 , unless otherwise noted)
Parameter
Frequency Range (F
Frequency Noise (rms)
Phase Noise @ 915 MHz
Frequency Tuning Time
Carrier Frequency Accuracy
Notes:
Frequency Error Contribution
with External Crystal
1. The frequency range is continuous over the specified range.
2. The frequency step size is limited by the frequency noise.
3. Optimum differential load is equal to 4 V/(11.5mA/2 * 4/PI) = 550 Therefore the antenna load resistance in parallel
with the Si4012 differential output resistance should equal 600 
RF
2
)
1
Allen deviation, measured across 1 ms
–40 °C ≤ T
–40 °C ≤ T
–40 °C ≤ T
–40 °C ≤ T
–40 °C ≤ T
–40 °C ≤ T
F
F
Test Condition
0 °C ≤ T
0 °C ≤ T
0 °C ≤ T
0 °C ≤ T
0 °C ≤ T
0 °C ≤ T
RF
RF
F
F
F
F
F
F
F
F
100 kHz offset
10 kHz offset
1 MHz offset
RF
RF
RF
RF
RF
RF
RF
RF
= 433.92 MHz
= 433.92 MHz
interval
= 100 MHz
= 100 MHz
= 315 MHz
= 315 MHz
= 868 MHz
= 868 MHz
= 915 MHz
= 915 MHz
A
A
A
A
A
A
A
A
A
A
A
A
≤ 70 °C
≤ 70 °C
≤ 70 °C
≤ 70 °C
≤ 70 °C
≤ 70 °C
Rev 0.2
≤ 85 °C
≤ 85 °C
≤ 85 °C
≤ 85 °C
≤ 85 °C
≤ 85 °C
–47.3
–78.8
–65.1
–150
–250
–108
–130
–217
–137
–229
Min
–15
–25
–10
27
—
—
—
—
—
–100
–105
Typ
–70
0.3
—
—
—
—
—
—
—
—
—
—
—
—
5
+150
+250
Max
47.3
78.8
65.1
960
108
130
217
137
229
+10
15
25
—
—
—
—
—
Si4012
dBc/Hz
dBc/Hz
dBc/Hz
Unit
MHz
ppm
ppm
ppm
ppm
kHz
kHz
kHz
kHz
kHz
kHz
kHz
kHz
kHz
kHz
ms
5