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CYW2331 Datasheet, PDF (1/12 Pages) Cypress Semiconductor – Dual Serial Input PLL with 2.0-GHz and 600-MHz Prescalers
1CYW2331
PRELIMINARY
CYW2331
Dual Serial Input PLL with 2.0-GHz and 600-MHz Prescalers
Features
• Operating voltage: 2.7V to 5.5V
• PLL1 operating frequency:
— 2.0 GHz with prescaler ratios of 64/65 and 128/129
• PLL2 operating frequency:
— 600 MHz with prescaler ratios of 8/9 and 16/17
• Lock detect feature
• Available in a 20-pin TSSOP (Thin Shrink Small Outline
Package)
• Available in a 24-pin CSP (Chip Scale Package)
• Available in a 20-pin MLF
(Mirco Lead Frame Package)
Applications
The Cypress CYW2331 is a dual serial input PLL frequency
synthesizer which includes a 2.0-GHz RF and a 600-MHz IF
dual modulus prescaler to combine the RF and IF mixer fre-
quency sections of wireless communication systems. The syn-
thesizer is designed for cordless/cellular telephone systems,
cable TV tuners, WLANs and other wireless communication
systems. The device operates from 2.7V and dissipates only
24 mW.
CYW2331 Dual Hi-Lo PLL Block Diagram
GND (4)
GND (7)
VCC1 (1) VCC2 (20) VP1 (2)
FIN1 (5)
FIN1# (6)
Prescaler
64/65 or
128/129
Binary 7-Bit
Swallow Counter
Binary 11-Bit
fp1
Programmable Counter
Phase
Detector
Charge
Pump
DOPLL1 (3)
OSC_IN (8)
LE (13)
DATA (12)
CLOCK (11)
Latch
Selector
Cntrl 22-Bit
Shift
Reg.
FIN2 (16)
FIN2# (15)
Prescaler
8/9 or
16/17
Pin Configuration
VCC1
1
20
VP1
2
19
DOPLL1
3
18
GND
4
17
FIN1
5
16
FIN1#
6
15
GND
7
14
OSC_IN
8
13
GND
9
12
FO/LD
10
11
TSSOP
Binary 4-Bit
Swallow Counter
GND (14)
VCC2
VP2
DOPLL2
GND
FIN2
FIN2#
GND
LE
DATA
CLOCK
19-Bit
Latch
Pwr-dwn
PLL1
15-Bit
fr1
Reference Counter
20-Bit Latch
20-Bit Latch
15-Bit
fr2
Reference Counter
19-Bit
Latch
Pwr-dwn
PLL2
Binary 11-Bit
Programmable Counter fp2
fr fp
Monitor
Output
Selector
Power
Control
Phase
Detector
Charge
Pump
GND (9)
GND (17)
VP2 (19)
FO/LD (10)
DOPLL2 (18)
NC
Vp1
DoPLL1
GND
Fin1
Fin1#
GND
OSC_IN
NC
1
21
2
20
3
19
4
18
5 (Top View) 17
6
16
7
15
8
14
9
13
NC
DoPLL2
GND
Fin2
Fin2#
GND
LE
DATA
NC
CSP
DoPLL1 1
GND 2
Fin1 3
Fin1# 4
GND 5
(Top View)
15 GND
14 Fin2
13 Fin2#
12 GND
11 LE
MLF
Cypress Semiconductor Corporation • 3901 North First Street • San Jose • CA 95134 • 408-943-2600
February 12, 2001. Rev. **
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