Microchip SY89297U Bedienungsanleitung

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 2018 Microchip Technology Inc.DS20005835A-page 1

SY89297U

Features

•Dual-Channel, Programmable Delay Line

•Serial Programming Interface (SDATA, SCLK,

SLOAD)

•Guaranteed AC Performance over Temperature

and Voltage:

->3.2Gbps/1.6GHz f

MAX

•Programming Accuracy:

-Linearity: –15ps to +15ps INL

-Monotonic: –5ps to +25ps

-Resolution: 5ps Programming Increments

•Low-Jitter Design: 1ps

RMS

Typical Random Jitter

•Programmable Delay Range: 5ns Delay Range

•Cascade Capability for Increased Delay

•Flexible Voltage Operation:

-V

CC

= 2.5V ±5% or 3.3V ±10%

•Industrial Temperature Range: –40°C to +85°C

•Available in 24-Lead (4mm x 4mm) QFN

Package

Applications

•Clock De-Skewing

•Timing Adjustments

•Aperture Centering

•System Calibration

Markets

•Automated Test Equipment

•Digital Radio and Video Broadcasting

•Closed Caption Encoders/Decoders

•Test and Measurement

General Description

The SY89297U is a DC-3.2Gbps programmable,

two-channel delay line. Each channel has a delay

range from 2ns to 7ns (5ns delta delay) in

programmable increments as small as 5ps. The delay

step is extremely linear and monotonic over the entire

programming range, with 15ps INL over temperature

and voltage.

The delay varies in discrete steps based on a serial

control word provided by the 3-pin serial control

(SDATA, SCLK, and SLOAD). The control word for

each channel is 10-bits. Both channels are

programmed through a common serial interface. For

increased delay, multiple SY89297U delay lines can be

cascaded together.

The SY89297U provides two independent 3.2Gbps

delay lines in an ultra-small 4mm x 4mm, 24-pin QFN

package. For other delay line solutions, consider the

SY89295U and SY89296U single-channel delay lines.

Evaluation boards are available for all these parts.

Package Type

SY89297U

24-Lead 4x4 QFN (M)

INA

/INA

VTA

VTB

INB

/INB

QA

/QA

VCC

VCC

QB

/QB

SOUT

SDATA

SCLK

SLOAD

GND

VCC

/ENB

/ENA

GND

VREF-AC

GND

VCC

789101112

18

17

16

15

14

13

242322212019

1

2

3

4

5

6

2.5V/3.3V, 3.2Gbps, Precision CML

Dual-Channel Programmable Delay

Produktspezifikationen