Si4133
Table 5. RF and IF Synthesizer Characteristics (Continued)
(VDD = 2.7 to 3.6 V, TA = –40 to 85 °C)
Parameter1
Symbol Test Condition
Min Typ Max Unit
RF1 Harmonic Suppression
Second Harmonic
—
–26
–20
dBc
RF2 Harmonic Suppression
—
–26 –20
dBc
IF Harmonic Suppression
—
–26 –20
dBc
RFOUT Power Level
RFOUT Power Level2
ZL = 50
–8
–3
ZL = 50RF1 active, –14
–7
Extended frequency
operation
1
dBm
1
dBm
IFOUT Power Level
ZL = 50
–8
–4
0
dBm
RF1 Output Reference Spurs
Offset = 200 kHz
—
–65
—
dBc
Offset = 400 kHz
—
–71
—
dBc
Offset = 600 kHz
—
–75
—
dBc
RF2 Output Reference Spurs
Offset = 200 kHz
—
–65
—
dBc
Offset = 400 kHz
—
–71
—
dBc
Powerup Request to Synthesizer Ready3 tpup
Time
Powerdown Request to Synthesizer Off4 tpdn
Time
Offset = 600 kHz
Figures 4, 5
Figures 4, 5
—
–75
—
dBc
—
40/f 50/f
—
—
100
ns
Notes:
1. f = 200 kHz, RF1 = 1.6 GHz, RF2 = 1.2 GHz, IFOUT = 550 MHz, LPWR = 0, for all parameters unless otherwise noted.
2. Extended frequency operation only. VDD 3.0 V, QFN only, VCO Tuning Range fixed by directly shorting the RFLA and
RFLB pins. See Application Note 41 for more details on the Si4133 extended frequency operation.
3. From powerup request (PWDN or SEN during a write of 1 to bits PDIB and PDRB in Register 2) to RF and IF
synthesizers ready (settled to within 0.1 ppm frequency error).
4. From powerdown request (PWDN, or SENduring a write of 0 to bits PDIB and PDRB in Register 2) to supply current
equal to IPWDN.
Rev. 1.61
9