WB1220
Serial Input PLL with 2.0-GHz Prescaler
Features
鈥?Operating voltage 2.7V to 5.5V
鈥?Operating frequency: up to 2.0 GHz with prescaler
ratios of 64/65 and 128/129
鈥?Lock detect feature
鈥?Power-down mode
鈥?20-pin TSSOP (Thin Shrink Small Outline Package)
Applications
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Wireless LAN
Wireless communication handsets
Base Stations
Microcells
WB1220 PLL Block Diagram
GND (7)
V
CC
(5)
V
P
(4)
(6)
F
IN
(10)
Prescaler
64/65 or
128/129
Binary 7-Bit
Swallow Counter
Binary 11-Bit
Programmable Counter
fp
DO
Phase
Detector
Charge
Pump
(16)
BISW
(15)
FC
(20)
鈭?/div>
r
(18)
鈭?/div>
p
18-Bit
Latch
OSC_IN
OSC_OUT
(1)
14-Bit
Reference Counter
(3)
fr
(8)
LD
LE
(14)
Latch
Selector
15-Bit
Latch
DATA
(13)
Cntrl 19-Bit
Shift
Reg
Divider
Output
(fr/fp)
MUX
(17)
F
OUT
CLOCK
PWDN
(11)
(19)
Pin Configuration
OSC_IN
NC
OSC_OUT
V
P
V
CC
D
O
GND
LD
NC
F
IN
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
鈭?/div>
r
PWDN
鈭?/div>
p
F
out
BISW
FC
LE
DATA
NC
CLOCK
Cypress Semiconductor Corporation
鈥?/div>
3901 North First Street
鈥?/div>
San Jose
鈥?/div>
CA 95134 鈥?/div>
408-943-2600
February 2, 2000, rev. *A
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