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SA8027 Datasheet(Fiches technique) 3 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
3
VDD
SR02357
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
15
16
6
5
19
18
17
12
2
LATCH
AUX DIVIDER
PHASE
DETECTOR
PHASE
DETECTOR
FRAC
COMP
PUMP
BIAS
PUMP
CURRENT
SETTING
13
VDDCP
GND
4
SA
7, 10
3
GNDCP
RSET
PHP
PHI
LOCK
PHA
14
8
9
1
11
PON
20
LOCK
SELECT
Figure 3.
Block Diagram (TSSOP20)
TSSOP20 PIN DESCRIPTION
SYMBOL
PIN
DESCRIPTION
LOCK
1
Lock detect output
TEST
2
Test (should be either grounded or
connected to VDD)
VDD
3
Digital supply
GND
4
Digital ground
RFin+
5
RF input to main divider
RFin–
6
RF input to main divider
GNDCP
7
Charge pump ground
PHP
8
Main normal charge pump
PHI
9
Main integral charge pump
GNDCP
10
Charge pump ground
SYMBOL
PIN
DESCRIPTION
PHA
11
Auxiliary charge pump output
AUXin
12
Input to auxiliary divider
VDDCP
13
Charge pump supply voltage
RSET
14
External resistor from this pin to ground
sets the charge pump current
REFin–
15
Reference input
REFin+
16
Reference input
CLOCK
17
Programming bus clock input
DATA
18
Programming bus data input
STROBE
19
Programming bus enable input
PON
20
Power down control




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