IDTCSPT857CNLGI IDT, Integrated Device Technology Inc, IDTCSPT857CNLGI Datasheet - Page 14

• Manufacturer Part Number: IDTCSPT857CNLGI
• Description: IC PLL CLK DVR SDRAM 40-VFQFPN
• Manufacturer: IDT, Integrated Device Technology Inc
• Type: PLL Clock Driverr

Specifications of IDTCSPT857CNLGI

• Input: Clock
• Output: Differential
• Frequency - Max: 220MHz
• Voltage - Supply: 2.3 V ~ 2.7 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 40-VFQFN, 40-VFQFPN
• Frequency-max: 220MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: CSPT857CNLGI

APPLICATION INFORMATION
NOTE:
1.
IDTCSPT857C
2.5V - 2.6V PLL DIFFERENTIAL 1:10 SDRAM CLOCK DRIVER
Memory module vendors may need to adjust the feedback capacitive load in order to meet DDR SDRAM registered DIMM timing requirements.
CLK
CLK
CLK
CLK
C = 14pF
C = 14pF
C = 14pF
C = 14pF
(1)
(1)
R = 120Ω
R = 120Ω
R = 120Ω
R = 120Ω
Feedback path
Feedback path
FBIN
FBIN
FBIN
FBIN
CSPT857C
CSPT857C
Figure 10. Clock Structure 2
Figure 9. Clock Structure 1
Z = 60Ω
Z = 60Ω
8 more
Z = 60Ω
Z = 60Ω
8 more
14
~2.5"
~2.5"
COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES
~0.3"
~0.3"
~0.6" (split to terminator)
~0.6" (split to terminator)
SDRAM
SDRAM
SDRAM
SDRAM
SDRAM
SDRAM
Stacked
Stacked
R = 120Ω
R = 120Ω