CY25245PVC datasheet(1/11 Pages) CYPRESS

tên linh kiện	CY25245PVC

Giải thích chi tiết về linh kiện	Frequency-multiplying, Peak-reducing EMI Solution

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Frequency-multiplying, Peak-reducing

EMI Solution

CY25245

Cypress Semiconductor Corporation

•

3901 North First Street

•

San Jose

, CA 95134

•

408-943-2600

Document #: 38-07124 Rev. *B

Revised February 2, 2005

Features

• Cypress PREMIS™ SMARTSPREAD™ family offering

• Generates an electromagnetic interference (EMI)

optimized clocking signal at the output

• Selectable output frequency range

• Single 1.25%, 2.5%, 5%, or 10% down or center spread

output

• Integrated loop filter components

• Operates with a 3.3 or 5V supply

• Low power CMOS design

• Available in 20-pin Small Shrunk Outline Package

(SSOP)

Key Specifications

Supply voltages: .......................................VDD = 3.3V ± 0.3V

or VDD = 5V ± 10%

Frequency range:............................ 13 MHz

≤ Fin ≤ 166 MHz

Cycle-to-cycle jitter: ......................................... 250 ps (max)

Output duty cycle: ................................ 40/60% (worst case)

Notes:

1. Pins marked with ^ are internal pull-down resistors with weak 250 k

Ω.

2. Pins marked with * are internal pull-up resistors with weak 80 k

Ω.

20

19

18

17

1

2

3

4

X1

X2

AVDD

MW0^

REFOUT

VDD

GND

IR1*

5

6

7

14

15

16

IR2*

SSOUT

MW1*

SDATA

OR1^

8

9

10

11

12

13

VDD

MW2^

OR2*

SSON#^

GND

Simplified Block Diagram

Pin Configuration

SSOP

Spread Spectrum

CY25245

(EMI suppressed)

3.3V or 5.0V

Oscillator or

Spread Spectrum

CY25245

(EMI suppressed)

3.3V or 5.0V

XTAL

X1

X2

Reference Input

Input

Output

X1

SCLK

SDATA

SCLK

Serial Interface

SCLK

[1, 2]

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