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SA8027 Datasheet(Fiches technique) 4 Page - NXP Semiconductors

Numéro de pièce SA8027
Description  2.5 GHz low voltage, low power RF fractional-N/IF integer frequency synthesizer
Télécharger  22 Pages
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Fabricant  PHILIPS [NXP Semiconductors]
Site Internet  http://www.nxp.com
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Philips Semiconductors
Product data
SA8027
2.5 GHz low voltage, low power
RF fractional-N/IF integer frequency synthesizer
2001 Aug 21
4
VDD
SR02358
CLOCK
DATA
STROBE
RF/MAINin+
RF/MAINin–
REFin+
REFin–
IF/AUXin
TEST
LOAD SIGNALS
ADDRESS DECODER
2–BIT SHIFT
REGISTER
22–BIT SHIFT
REGISTER
CONTROL
LATCH
LATCH
MAIN DIVIDER
SM
REFERENCE
DIVIDER
22 2 2
LATCH
AMP
AMP
16
17
5
4
20
19
18
11
23
LATCH
AUX DIVIDER
PHASE
DETECTOR
PHASE
DETECTOR
PUMP
BIAS
PUMP
CURRENT
SETTING
14
VDDCP
GNDpre
3
SA
6, 9
24
GNDCP
RSET
PHP
PHI
LOCK
PHA
15
7
8
22
10
PON
21
GND
2
VDDpre
1
LOCK
SELECT
FRAC
COMP
Figure 4.
Block Diagram (HBCC24)
HBCC24 PIN DESCRIPTION
SYMBOL
PIN
DESCRIPTION
VDDPre
1
Prescaler supply voltage
GND
2
Digital ground
GNDPre
3
Prescaler ground
RFin+
4
RF input to main divider
RFin–
5
RF input to main divider
GNDCP
6
Charge pump ground
PHP
7
Main normal charge pump
PHI
8
Main integral charge pump
GNDCP
9
Charge pump ground
PHA
10
Auxiliary charge pump output
AUXin
11
Input to auxiliary divider
N/C
12
Not connected
N/C
13
Not connected
SYMBOL
PIN
DESCRIPTION
VDDCP
14
Charge pump supply voltage
RSET
15
External resistor from this pin to ground
sets the charge pump current
REFin–
16
Reference input
REFin+
17
Reference input
CLOCK
18
Programming bus clock input
DATA
19
Programming bus data input
STROBE
20
Programming bus enable input
PON
21
Power down control
LOCK
22
Lock detect output
TEST
23
Test (should be either grounded or
connected to VDD)
VDD
24
Digital supply




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