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SA8028 Datasheet(Fiches technique) 4 Page - NXP Semiconductors

Numéro de pièce SA8028
Description  2.5 GHz sigma delta fractional-N / 760 MHz IF integer frequency synthesizers
Télécharger  28 Pages
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Fabricant  PHILIPS [NXP Semiconductors]
Site Internet  http://www.nxp.com
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Philips Semiconductors
Product data
SA8028
2.5 GHz sigma delta fractional-N /
760 MHz IF integer frequency synthesizers
2002 Feb 22
4
VDD
SR02379
CLOCK
DATA
STROBE
RFin+
RFin–
REFin+
REFin–
IFin
TEST
LOAD SIGNALS
ADDRESS DECODER
2–BIT SHIFT
REGISTER
22–BIT SHIFT
REGISTER
CONTROL
LATCH
LATCH
RF DIVIDER
REF DIVIDER
22 2 2
LATCH
16
17
5
4
20
19
18
11
23
LATCH
IF DIVIDER
PHASE
DETECTOR
PHASE
DETECTOR
PUMP
BIAS
PUMP
CURRENT
SETTING
14
VDDCP
GND
2
SA
6, 9
24
GNDCP
RSET
PHP
PHI
LOCK
PHA
15
7
8
22
10
PON
21
SIGMA-DELTA
GNDPre
3
1
VDDpre
LOCK
DETECT
Figure 2.
HBCC24 Block Diagram
HBCC24 PIN DESCRIPTION
SYMBOL
PIN
DESCRIPTION
VDDpre
1
Prescaler supply voltage
GND
2
Ground; digital
GNDPre
3
Prescaler ground; analog
RFin+
4
Input to RF divider (+)
RFin–
5
Input to RF divider (–)
GNDCP
6
Charge pump ground; analog
PHP
7
RF normal charge pump output
PHI
8
RF integral charge pump output
GNDCP
9
Charge pump ground; analog
PHA
10
IF charge pump output
IFin
11
Input to IF divider
N/C
12
Not connected
SYMBOL
PIN
DESCRIPTION
N/C
13
Not connected
VDDCP
14
Charge pump supply voltage; analog
RSET
15
External resistor from this pin to ground
sets the charge pump current
REFin–
16
Input to reference (–)
REFin+
17
Input to reference (+)
CLOCK
18
Programming bus clock input
DATA
19
Programming bus data input
STROBE
20
Programming bus enable input
PON
21
Power-down control input
LOCK
22
Lock detect output
TEST
23
Test (should be either grounded or
connected to VDD)
VDD
24
Supply; digital




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