SI4112 데이터 시트보기 (PDF) - Unspecified
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SI4112 Datasheet PDF : 34 Pages
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Si4133
Table 5. RF and IF Synthesizer Characteristics
(VDD = 2.7 to 3.6 V, TA = –40 to 85°C)
Parameter1
Symbol Test Condition
Min Typ Max Unit
XIN Input Frequency
Reference Amplifier Sensitivity
fREF
VREF
2
—
26
MHz
0.5
—
VDD
VP-P
+0.3 V
Phase Detector Update Frequency
RF1 VCO Center Frequency Range
RF1 VCO Tuning Range2
fφ
fφ = fREF/R
0.010 —
1.0
MHz
fCEN
947
— 1720 MHz
Extended frequency 1850 — 2050 MHz
operation
RF2 VCO Center Frequency Range
RF Tuning Range from fCEN
IF VCO Center Frequency Range
IFOUT Tuning Range
fCEN
789
— 1429 MHz
Note: LEXT ±10%
–5
—
5
%
fCEN
526
—
952 MHz
with IFDIV
62.5
—
1000 MHz
IFOUT Tuning Range from fCEN
RF1 VCO Pushing
Note: LEXT ±10%
Open loop
–5
—
5
%
—
500
— kHz/V
RF2 VCO Pushing
—
400
— kHz/V
IF VCO Pushing
—
300
— kHz/V
RF1 VCO Pulling
RF2 VCO Pulling
VSWR = 2:1, all
—
900
—
MHz
phases, open loop
—
300
—
kHz
IF VCO Pulling
—
100
—
kHz
RF1 Phase Noise
1 MHz offset
—
–132
— dBc/Hz
RF1 Integrated Phase Error
10 Hz to 100 kHz
—
0.9
— degrees
rms
RF2 Phase Noise
1 MHz offset
—
–134
— dBc/Hz
RF2 Integrated Phase Error
10 Hz to 100 kHz
—
0.7
— degrees
rms
IF Phase Noise
100 kHz offset
—
–117
— dBc/Hz
IF Integrated Phase Error
100 Hz to 100 kHz
—
0.4
— degrees
rms
Notes:
1. fφ = 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, MLP 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 power up request (PWDNB↑ or SENB↑ 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 power down request (PWDNB↓, or SENB↑ during a write of 0 to bits PDIB and PDRB in Register 2) to supply
current equal to IPWDN.
8
Rev. 1.1
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