UMA1021AM 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
UMA1021AM
handbook, full pagewidth
1
LOCK
2
CP
VDD2 ³
VSS3 ⁴
5
RFI
6
VSS2
7
PON
8
VSS1
CHARGE PUMP
UMA1021AM
BAND GAP
PHASE COMPARATOR
16 _ISET
15
VCC
14 _GND(CP)
MAIN DIVIDER
WITH
PRESCALER
REFERENCE
13
DIVIDER
12
to charge pump
11
SERIAL INTERFACE
10
9
XTAL
VDD1
E
DATA
CLK
MGL406
Fig.1 Block diagram.
PINNING
SYMBOL PIN
DESCRIPTION
LOCK
1 out-of-lock detector output
CP
2 charge pump output
V_DD2
V_SS3
RFI
3 digital supply voltage
4 ground 3 (0 V)
5 2 GHz main divider input
V_SS2
PON
6 ground 2 (0 V)
7 power-on input
V_SS1
CLK
8 ground 1 (0 V)
9 programming bus clock input
DATA
10 programming bus data input
E
11 programming bus enable input
(active LOW)
V_DD1
XTAL
12 digital supply voltage
13 crystal frequency input
GND(CP) 14 ground for charge pump
V_CC
15 analog supply voltage for charge
pump
I_SET
16 charge pump current setting with
external resistor from this pin to
ground
1998 Nov 19
handbook, halfpage
LOCK 1
16 ISET
CP 2
15 VCC
VDD2 3
14 GND(CP)
VSS3 4
13 XTAL
UMA1021AM
RFI 5
12 VDD1
VSS2 6
11 E
PON 7
10 DATA
VSS1 8
9 CLK
MGL405
Fig.2 Pin configuration.
3