CY244ZXC Datasheet, PDF (1/9 Pages) Cypress Semiconductor – Factory Programmable Quad PLL Clock Generator with VCXO

CY244/45ZXC
Factory Programmable Quad PLL Clock Generator with VCXO
Features
• Fully integrated phase-locked loops (PLLs)
• Selectable Output Frequency
• Programmable Output Frequencies
• Output Frequency Range of 5–166 MHz
• Input Frequency Range
— Crystal: 10–30 MHz
— External Reference: 1–100 MHz
• Analog VCXO
• 16-/20-pin TSSOP packages
• 3.3V operation
Benefits
• Meets most Digital Set Top Box, DVD Recorder and DTV
application requirements
• Multiple high-performance PLLs allow synthesis of
unrelated frequencies
• Integration eliminates the need for external loop filter
components
• Meets critical timing requirements in complex system
designs
• Enables application compatibility
• Complete VCXO solution with ±120 ppm (minimum pull
range)
Block Diagram
XIN
XOUT
VIN
VCXO
PLL1
PLL2
PLL3
PLL4
FS0/1/2
Select
OE
Logic
Pin Configuration
16-Pin TSSOP
XIN 1
16 XOUT
AVDD 2
15 VDD
VIN 3
14 CLKG
AVSS
CLKA/OE
4
13
CY244ZXC
5
12
CLKF
VSS
VSS 6
11 VDD
CLKB 7
10 FS0
FS1 8
9 CLKC
Divider
&
Multiplexer
CLKA
CLKB
CLKC
CLKD
CLKE
CLKF
CLKG
20-Pin TSSOP
XIN
FS2
AVDD
VIN
AVSS
OE/PD
CLKA
VSS
CLKB
FS1
1
20
2
19
3
18
4
17
5
16
CY245ZXC
6
15
7
14
8
13
9
12
10
11
XOUT
VDD
CLKG
CLKF
VSS
CLKE
CLKD
VDD
FS0
CLKC
Cypress Semiconductor Corporation • 3901 North First Street • San Jose, CA 95134 • 408-943-2600
Document #: 38-07748 Rev. **
Revised March 7, 2005