SA9025 데이터 시트보기 (PDF) - Philips Electronics
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SA9025 Datasheet PDF : 23 Pages
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Philips Semiconductors
900 MHz transmit modulator and 2.2 GHz
fractional–N synthesizer
Objective specification
SA9025
Synthesizer
Main Divider
fMMAX Input frequency range
Input harmonics
800
No multi–clocking
–10
2200
MHz
dBc
Synthesizer LO input (AC-coupled;
RXLO 1/2 external shunt 50Ω single-ended,
100Ω differential)
Input power
–20
0
dBm
Reference Divider
fRMAX Input frequency RANGE
Input harmonics
10
No multi–clocking
–10
40
MHz
dBc
Auxiliary Divider
fAMAX Input frequency RANGE
Input harmonics
10
No multi–clocking
–10
500
MHz
dBc
VINA Input signal amplitude
Serial Interface
0.200
VP-P
fCLOCK
tSU
Clock frequency
Set-up time: DATA to CLOCK, CLOCK to
STROBE
10
MHz
30
ns
tH
Hold time: CLOCK to DATA
30
ns
CLOCK
30
tSW Pulse width
STROBE (B - D words)
30
ns
A word
1
f REF @ NREF
) tW
1. Transmit mode @ 33% duty cycle.
2. The relative output current variation is defined thus:
ąąDIout/Iout=2x(I2–I1)/|(I2+I1)|; with V1=0.7V, V2=VCC–0.8V (see figure 3)
3. Power supply current measured with ƒRX = 2100.54 MHZ, ƒREF = 19.44 MHz, ƒINA= 109.92 MHz, main phase detector bias resistor = 7.5 kW.
Main phase detector reference frequency = 240 kHz, auxiliary phase detector frequency = 240 kHz.
4. Maximum and minimum levels guaranteed by design and random testing for temperature range of –40 to +85°C.
5. Power is rated at I/Q input level of 0.9VPP.
1997 Aug 01
8
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