UMA1021M Datasheet, PDF (3/16 Pages) NXP Semiconductors – Low-voltage frequency synthesizer for radio telephones

Philips Semiconductors
Low-voltage frequency synthesizer
for radio telephones
BLOCK DIAGRAM
Product specification
UMA1021M
handbook, full pagewidth
1
FAST
2
CPF
3
CP
VDD1 VDD2 VCC
14 4
18
FAST CHARGE
PUMP
UMA1021M
19
BAND GAP
CHARGE PUMP
ISET
PHASE COMPARATOR
20
LOCK
6
RFI
8
POL
9
PON
MAIN DIVIDER
WITH
PRESCALER
REFERENCE
DIVIDER
SERIAL INTERFACE
10
7
5
VSS1 VSS2 VSS3
17
GND(CP)
16
XTALA
XTALB
15
13
E
12
DATA
11
CLK
MBG366
Fig.1 Block diagram.
1999 Jun 17
3