SA7025 Datasheet, PDF (3/22 Pages) NXP Semiconductors – Low-voltage 1GHz fractional-N synthesizer

Philips Semiconductors
1GHz low-voltage Fractional-N synthesizer
Product specification
SA7025
PIN DESCRIPTIONS
Symbol Pin
Description
CLOCK 1 Serial clock input
DATA
2 Serial data input
STROBE 3 Serial strobe input
V_SS
RF_IN
4 Digital ground
5 Prescaler positive input
RF_IN
V_CCP
REF_IN
RA
AUX_IN
PHA
6 Prescaler negative input
7 Prescaler positive supply voltage. This pin supplies power to the prescaler and RF input buffer
8 Reference divider input
9 Auxiliary current setting; resistor to V_SSA
10 Auxiliary divider input
11 Auxiliary phase detector output
V_SSA
PHI
12 Analog ground
13 Integral phase detector output
PHP
14 Proportional phase detector output
V_DDA
15 Analog supply voltage. This pin supplies power to the charge pumps, Auxiliary prescaler, Auxiliary and Reference
buffers.
RN
RF
LOCK
16 Main current setting; resistor to V_SSA
17 Fractional compensation current setting; resistor to V_SSA
18 Lock detector output
TEST
V_DD
19 Test pin; connect to V_DD
20 Digital supply voltage. This pin supplies power to the CMOS digital part of the device
1996 Aug 6
3