IDTCSPT855PGG IDT, Integrated Device Technology Inc, IDTCSPT855PGG Datasheet

IDTCSPT855PGG

Manufacturer Part Number

IDTCSPT855PGG

Description

IC PLL CLK DRIVER 2.5V 28-TSSOP

Manufacturer

IDT, Integrated Device Technology Inc

Type

PLL Clock Driverr

Series

-r

Datasheet

1.IDTCSPT855PG8.pdf (10 pages)

Specifications of IDTCSPT855PGG

Input

Clock

Output

Clock

Frequency - Max

220MHz

Voltage - Supply

2.3 V ~ 2.7 V

Operating Temperature

0°C ~ 70°C

Mounting Type

Surface Mount

Package / Case

28-TSSOP

Frequency-max

220MHz

Number Of Elements

Operating Supply Voltage (typ)

2.5V

Operating Temp Range

0C to 70C

Package Type

TSSOP

Operating Supply Voltage (min)

2.3V

Operating Supply Voltage (max)

2.7V

Operating Temperature Classification

Commercial

Pin Count

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Other names

CSPT855PGG

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

IDTCSPT855PGG

Manufacturer:

IDT

Quantity:

629

Company:

BOSTOCK HK LIMITED

Part Number:

IDTCSPT855PGGI

Manufacturer:

IDT

Quantity:

8 000

Company:

Meier Automation Equipment Co., Limited

Part Number:

IDTCSPT855PGGI

Manufacturer:

IDT

Quantity:

20 000

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FEATURES:

• PLL clock driver for DDR (Double Data Rate) synchronous

• Spread spectrum clock compatible

• Operating frequency: 60MHz to 220MHz

• Low jitter (cycle-to-cycle): ±50ps

• Distributes one differential clock input to four differential clock

• Enters low power mode and 3-state outputs when input CLK

• Operates from a 2.5V supply

• Consumes <200μ μ μ μ μ A quiescent current

• External feedback pins (FBIN, FBIN) are used to synchronize

• Available in TSSOP package

APPLICATIONS:

• For all DDR1 speeds: PC1600 (DDR200), PC2100 (DDR266),

The IDT logo is a registered trademark of Integrated Device Technology, Inc.

COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES

FUNCTIONAL BLOCK DIAGRAM

IDTCSPT855

2.5V PLL CLOCK DRIVER

DRAM applications

outputs

signal is less than 20MHz or PWRDWN is low

outputs to input clocks

PC2700 (DDR333), PC3200 (DDR400)

2008 Integrated Device Technology, Inc.

PWRDWN

FBIN

CLK

2.5V PHASE LOCKED LOOP

CLOCK DRIVER

POWERDOWN

AND TEST

LOGIC

PLL

DESCRIPTION:

that distributes one differential clock input pair(CLK, CLK ) to four differential

output pairs (Y

(FBOUT, FBOUT). When PWRDWN is high, the outputs switch in phase and

frequency with CLK. When PWRDWN is low, all outputs are disabled to a high-

impedance state (3-state), and the PLL is shut down (low-power mode). The

device also enters this low-power mode when the input frequency falls below

a suggested detection frequency that is below 20MHz (typical 10MHz). An input

frequency detection circuit detects the low-frequency condition, and after

applying a >20MHz input signal, this detection circuit reactivates the PLL and

enables the outputs.

purposes. The CSPT855 is also able to track spread spectrum clocking for

reduced EMI.

to achieve phase-lock of the PLL. This stabilization time is required following

power up.

The CSPT855 is a high-performance, low-skew, low-jitter zero delay buffer

When AV

Since the CSPT855 is based on PLL circuitry, it requires a stabilization time

COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES

[0:3]

is tied to GND, the PLL is turned off and bypassed for test

, Y

[0:3]

) and one differential pair of feedback clock outputs

FBOUT

NOVEMBER 2008

IDTCSPT855

DSC-6203/12

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IDTCSPT855PGG Summary of contents

Page 1

IDTCSPT855 2.5V PLL CLOCK DRIVER FEATURES: • PLL clock driver for DDR (Double Data Rate) synchronous DRAM applications • Spread spectrum clock compatible • Operating frequency: 60MHz to 220MHz • Low jitter (cycle-to-cycle): ±50ps • Distributes one differential clock input ...

Page 2

IDTCSPT855 2.5V PLL CLOCK DRIVER PIN CONFIGURATION 1 GND DDQ 5 GND CLK 6 7 CLK 8 V DDQ AGND V 11 DDQ ...

Page 3

IDTCSPT855 2.5V PLL CLOCK DRIVER FUNCTION TABLE (1) INPUTS PWRDWN AV CLK DD GND H L GND 2.5V (nom 2.5V (nom 2.5V (nom) X <20MHz NOTES ...

Page 4

IDTCSPT855 2.5V PLL CLOCK DRIVER DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE Following Conditions Apply Unless Otherwise Specified: Commercial 0°C to +70°C; Industrial Symbol Parameter V Input Voltage (All Inputs HIGH-Level Output Voltage OH V ...

Page 5

IDTCSPT855 2.5V PLL CLOCK DRIVER SWITCHING CHARACTERISTICS Symbol Description PLH (2) t LOW to HIGH Level Propagation Delay Time PHL (2) t HIGH to LOW Level Propagation Delay Time JIT(PER) (3) t Jitter (period), see figure 6 JIT(CC) (3) t ...

Page 6

IDTCSPT855 2.5V PLL CLOCK DRIVER TEST CIRCUIT AND SWITCHING WAVEFORMS 60Ω 60Ω CSPT855 NOTE GND TT Yx, FBOUT Yx, FBOUT COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES R ...

Page 7

IDTCSPT855 2.5V PLL CLOCK DRIVER TEST CIRCUIT AND SWITCHING WAVEFORMS CLK CLK FBIN FBIN CLK CLK FBIN FBIN t D(Ø Yx, FBOUT Yx, FBOUT COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES t (Ø)n ∑ (Ø)n ...

Page 8

IDTCSPT855 2.5V PLL CLOCK DRIVER TEST CIRCUIT AND SWITCHING WAVEFORMS Yx, FBOUT Yx, FBOUT Yx, FBOUT Yx, FBOUT Yx, FBOUT Yx, FBOUT Yx, FBOUT Yx, FBOUT COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES t cycle ...

Page 9

IDTCSPT855 2.5V PLL CLOCK DRIVER TEST CIRCUIT AND SWITCHING WAVEFORMS 80% C lock Inputs and O utputs 20% COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES (I Figure 8. Input and Output Slew ...

Page 10

IDTCSPT855 2.5V PLL CLOCK DRIVER ORDERING INFORMATION XXXXX XX CSPT Package Device Type CORPORATE HEADQUARTERS 6024 Silver Creek Valley Road San Jose, CA 95138 COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES X Process Blank I PG PGG 855 for SALES: 800-345-7015 or ...

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