cy2sstv850oct SpectraLinear Inc, cy2sstv850oct Datasheet

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cy2sstv850oct

Manufacturer Part Number
cy2sstv850oct
Description
Differential Clock Buffer/driver
Manufacturer
SpectraLinear Inc
Datasheet
Rev 1.0, November 21, 2006
2200 Laurelwood Road, Santa Clara, CA 95054
Features
• Phase-locked loop clock distribution for Double Data
• 1:10 differential outputs
• External Feedback pins (FBINT, FBINC) are used to
• SSCG: Spread Aware™ for EMI reduction
• 48-pin SSOP and TSSOP packages
• Conforms to JEDEC JC40 and JC42.5 DDR
Block Diagram
Rate Synchronous DRAM applications
synchronize the outputs to the clock input
specifications
SDATA
CLKINT
CLKINC
FBINC
FBINT
AVDD
SCLK
PLL
Interface
Serial
Logic
10
Tel:(408) 855-0555
FBOUTC
FBOUTT
YT2
YC2
YT3
YC3
YT4
YC4
YT5
YC5
YT6
YC6
YT7
YC7
YT8
YC8
YT9
YC9
YT0
YC0
YT1
YC1
Description
This PLL clock buffer is designed for 2.5 VDD and 2.5 AVDD
operation and differential data input and output levels.
This device is a zero-delay buffer that distributes a differential
clock input pair (CLKINT, CLKINC) to ten differential pair of
clock outputs (YT[0:9], YC[0:9]) and one differential pair
feedback clock output (FBOUTT, FBOUTC). The clock outputs
are individually controlled by the serial inputs SCLK and
SDATA.
The two-line serial bus can set each output clock pair (YT[0:9],
YC[0:9]) to the Hi-Z state. When AVDD is grounded, the PLL
is turned off and bypassed for test purposes.
The PLL in this device uses the input clocks (CLKINT,CLKINC)
and
high-performance, low-skew, low-jitter output differential
clocks.
Differential Clock Buffer/Driver
Pin Configuration
the feedback
Fax:(408) 855-0550
CLKINC
CLKINT
VDDQ
VDDQ
AVDD
AVSS
SCLK
VDDI
VSS
VSS
VSS
VDD
VSS
VSS
YC0
YC1
YC2
YC3
YC4
YT0
YT1
YT2
YT3
YT4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
clocks (FBINT,FBINC)
CY2SSTV850
www.SpectraLinear.com
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
FBINC
FBOUTT
VSS
YC5
YT5
VDDQ
YT6
YC6
VSS
VSS
YC7
YT7
VDDQ
SDATA
VDDQ
FBOUTC
VSS
YC8
YT8
VDDQ
YT9
YC9
VSS
FBINT
Page 1 of 9
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cy2sstv850oct Summary of contents

Page 1

Features • Phase-locked loop clock distribution for Double Data Rate Synchronous DRAM applications • 1:10 differential outputs • External Feedback pins (FBINT, FBINC) are used to synchronize the outputs to the clock input • SSCG: Spread Aware™ for EMI reduction ...

Page 2

Pin Description Pin Name 13 CLKINT 14 CLKINC 35 FBINC 36 FBINT 3, 5, 10, 20, 22 YT(0:9) 46, 44, 39, 29, 19, 23 YC(0:9) 47, 43, 40,30,26 32 FBOUTT 33 FBOUTC 12 SCLK I, ...

Page 3

Function Table Inputs AVDD CLKINT GND L GND H 2.5V L 2.5V H Nom Design Nom 2.5V <20 MHz <30 MHZ <20 MHz <30 MHz Power Management The individual output enable/disable CY2SSTV850 allows the user to implement unique power management ...

Page 4

Start Bit Slave Address R/W Data Byte 0 Ack 1 bit 8 bits Table 1. Timing Requirements for the 2-line Serial Interface over Recommended Ranges of Operating Free-air Temperature and VDDI from 3.3V to ...

Page 5

Maximum Ratings Input Voltage Relative to V :...............................V SS Input Voltage Relative DDQ DD Storage Temperature: ................................. –65°C to +150°C Operating Temperature:.................................... 0°C to +70°C Maximum Power Supply: ................................................ 3.5V [5] DC Parameters (AVDD = ...

Page 6

AC Parameters ( DDQ Parameter Description f Operating Clock Frequency CLK t Input Clock Duty Cycle DC t Maximum PLL lock Time lock t /t Output Clocks Slew Rate Output ...

Page 7

Differential Parameter Measurement Information CLKINT CLKINC FBINT FBINC CLKINT CLKINC FBINT FBINC t d( ∅ ) YT[0:9], FBOUTT YC[0:9], FBOUTC YT[0:9], FBOUTT YC[0:9], FBOUTC Rev 1.0, November 21, 2006 t ( ∅ Σ ...

Page 8

... YT[0:9], FBOUTT YC[0:9], FBOUTC YT[0:9], FBOUTT YC[0:9], FBOUTC Figure 6. Differential Signal Using Direct Termination Resistor Ordering Information Part Number CY2SSTV850OC CY2SSTV850OCT CY2SSTV850ZC CY2SSTV850ZCT Rev 1.0, November 21, 2006 t (hper_n jit(hper) hper(n) Figure 4. Half-Period Jitter t c( it(cc) c(n) Figure 5. Cycle-to-Cycle Jitter ...

Page 9

Package Drawing and Dimensions 48-Lead Shrunk Small Outline Package 048 48-Lead Thin Shrunk Small Outline Package, Type mm) Z48 While SLI has reviewed all information herein for accuracy and reliability, Spectra Linear Inc. assumes no ...

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