PRC298 [CALMIRCO]

CLOCK TERMINATOR; 时钟终结者


型号：	PRC298
厂家：	CALIFORNIA MICRO DEVICES CORP
描述：	CLOCK TERMINATOR 时钟终结者时钟
文件：	总3页 (文件大小：36K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

CALIFORNIA MICRO DEVICES

PRC298/299

Clock Terminator

Features

Application

• Stable resistor-capacitor network

• Ideal for high-speed logic

• Low lead inductance

• Clock termination

• Reduces board space compared to discretes

• SOT Packages

Product Description

High speed microprocessors like Intel’s Pentium^®, DEC’s

Alpha, Motorola’s 68K and PowerPC, Sun’s SPARC,

MIPs, and other RISC-based systems require well-

controlled and precise clock signals to maintain a high

performance synchronous system. However, very fast

edge rated clock signals exhibit transmission line effects

on the clock lines resulting in undershoot and overshoot

disturbances.

These networks are fabricated on a silicon substrate

using advanced thin film technology. They have low

parasitic inductance compared to discrete and conven-

tional thick film filters and provide effective AC termina-

tion.

Why thin film RC networks? The PRC298/299 is an

integrated RC network fabricated on a silicon substrate

using advanced thin film technology. This technology

insures a fixed time constant and does not create

additional skew on the clock lines. It offers very low

parasitic inductance compared to conventional discrete

thick film-based approaches and provides effective

termination at high frequencies.

CAMD’s PRC298/299 SOT resistor-capacitor integrated

thin film networks are specifically designed to eliminate

transmission line effects on high speed clock and data

lines.

SCHEMATIC CONFIGURATIONS

PRC298

(SOT-143)

PRC299

(SOT-23)

C1730201

215 Topaz Street, Milpitas, California 95035

Tel: (408) 263-3214

Fax: (408) 263-7846

www.calmicro.com

2/28/2001

CALIFORNIA MICRO DEVICES

PRC298/299

California Micro Devices can develop a fully customized solution which embodies the configuration shown in this data

sheet or modified to suit specific application requirements. A Non-Recurring Engineering (NRE) charge will apply for

all fully customized requirements and a minimum order/lot will be required.

Please direct your detailed circuit configuration and specification requirements to your local CAMD representative or to

the factory for a quotation.

STANDARD SPECIFICATIONS

Resistance Range

15 to 100Ω

10 to 100pF

±10ꢀ

Capacitance Range

Absolute Tolerance (R)

Absolute Tolerance (C)

Operating Temperature Range

Power Rating/Resistor

Storage Temperature

Package Power Rating

±±0ꢀ

–55°C to 1±5°C

100mW

–60°C to 150°C

1W, MAX

TYPICAL VALUES

Part Number

Resistor

Value (Ω)

Capacitor

Breakdown

Voltage (MAX)

±5V

Tolerance

±10ꢀ

±5ꢀ

Value (pF)

Tolerance

±±0ꢀ

±10ꢀ

±±0ꢀ

PRC±98

PRC±99

33Ω

47Ω

50Ω

75Ω

100Ω

40Ω

33Ω

47Ω

50Ω

75Ω

100Ω

40Ω

50Ω

47Ω

50Ω

33Ω

47pF

33pF

68pF

50pF

100pF

50pF

47pF

33pF

68pF

50pF

100pF

50pF

100pF

68pF

47pF

100pF

47pF

±5V

10V

±5V

45V

10V

45V

10V

45V

±±0ꢀ

±5ꢀ

10V

45V

215 Topaz Street, Milpitas, California 95035

Tel: (408) 263-3214

Fax: (408) 263-7846

www.calmicro.com

2/28/2001

CALIFORNIA MICRO DEVICES

PRC298/299

Part Number Key

PRC289

PRC299

XXX M / XXX M

Part Series

Capacitor Tolerance

K = ±10ꢀ

M = ±±0ꢀ

Resistance Code

• First ± digits are

significant value

• Third digit represents

number of zeros to follow

Capacitance Code

• First ± digits are significant

value.

• Third digit represents

number of zeros to follow

e.g., code for 68pF is 680.

e.g., code for 56Ω is 560

Resistor Tolerance

J = ±5ꢀ

K = ±10ꢀ

M = ±±0ꢀ

±15 Topaz Street, Milpitas, California 95035

Tel: (408) ±63-3±14

Fax: (408) ±63-7846

www.calmicro.com

±/±8/±001

PRC298 [CALMIRCO]

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