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Part Name
Description
SA8025A View Datasheet(PDF) - Philips Electronics
Part Name
Description
Manufacturer
SA8025A
Low-voltage 1.8GHz fractional-N synthesizer
Philips Electronics
SA8025A Datasheet PDF : 23 Pages
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Philips Semiconductors
1.8GHz low-voltage Fractional-N synthesizer
Product specification
SA8025A
BLOCK DIAGRAM
CLOCK
DATA
STROBE
V
SS
RF
IN
RF
IN
TEST
V
CCP
REF
IN
AUX
IN
SERIAL INPUT + PROGRAM LATCHES
EM
EM+EA
EA
FB
2
NM2
PR
NM1
NM3
2
12
8
64/65/68/73
PRESCALER
MAIN DIVIDERS
FMOD
NF
3
FRACTIONAL
ACCUMULATOR
FB
PRESCALER
MODULUS
CONTROL
EM
NR
12
SM
2
REFERENCE DIVIDER
SA
2
EA
PA
NA
12
MAIN
PHASE
DETECTOR
MAIN
REFERENCE
SELECT
FRD
CN
8
2
CL
2
÷
2
÷
2
÷
2
CK
4
AUXILIARY
REFERENCE
SELECT
AUXILIARY
2
PHASE
DETECTOR
NORMAL
OUTPUT
CHARGE
PUMP
SPEED-UP
OUTPUT
CHARGE
PUMP
INTEGRAL
OUTPUT
CHARGE
PUMP
AUXILIARY
OUTPUT
CHARGE
PUMP
1/4
PRESCALER
AUXILIARY DIVIDER
V
DD
RF
RN
PHP
PHI
RA
PHA
LOCK
V
DDA
Figure 2. Block Diagram
V
SSA
SR00624
1996 Oct 15
4
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