PAC221QT datasheet, PDF - EEWORLD Datasheet

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PAC221QT: DescriptionP/ACTIVE EMI/RFI T FILTER; File Size61KB，3 Pages; ManufacturerCALMIRCO; Websitehttp://www.calmicro.com/

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PAC221QT Overview

P/ACTIVE EMI/RFI T FILTER

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CALIFORNIA MICRO DEVICES

PACT

P/ACTIVE EMI/RFI T FILTER

Features

• 8 Filter Channels in Miniature QSOP Package

• Ideal Frequency Response to Over 3 GHz

• Low In-Band Insertion Loss Maintains Signal

Integrity

• Low Distortion Low Cross Talk

• ESD Protected

Pin Assignments

GND

Filt1

Filt2

Filt3

GND

Filt4

Filt5

GND

Filt6

Filt7

Filt8

GND

Filt1

Filt2

Filt3

GND

Filt4

Filt5

GND

Filt6

Filt7

Filt8

GND

Applications

• EMI/RFI Filter

• Low Pass Filter

• SCSI Port Filter

• LCD Panel Display Filter

Product Description

Note: CAMD’s P/Active T Filter is a higher performance, upgraded version of the original PRC200/210 series which provides 2KV ESD

protection, minimized lead inductance and parasitic capacitive effects (with added ground pins), and improved crosstalk and filter

performance characteristics at high data transmission rates. They exhibit almost ideal RC characteristics to 3 GHz. The PACT series

is recommended for all new designs.

CAMD’s P/Active T is a highly integrated thin film resistor-capacitor network designed to suppress EMI/RFI noise at

I/O ports of personal computers and peripherals, workstations, Local Area Network (LAN), Asynchronous Transfer

Mode (ATM), and Wide Area Network (WAN). The filter includes ESD protection circuitry which prevents device

destruction when subjected to ESD discharges of greater than 2KV. The ESD protection circuitry permits the filter to

operate on bipolar signals of up to ±6V. CAMD’s PACT is housed in a surface mount package suitable for bottom side

mounting to the board. This integrated network solution minimizes space and routing problems and improves reliability

and yields.

Why P/Active EMI/RFI filters? EMI/RFI filters are needed to suppress noise at low and high frequencies of the signal.

Ferrite beads, commonly used for EMI/RFI filtering, are bulky and ineffective at low frequencies and have saturation

problems at high frequencies. Resistor-capacitor networks offer the best technical approach for effective EMI/RFI

filtering. Also, conventional thick film-based EMI/RFI filters do not effectively suppress noise at high frequencies.

STANDARD SPECIFICATIONS

Absolute Tolerance (R)

Absolute Tolerance (C)

Absolute Tolerance (C=15pF)

Operating Temperature Range

Power Rating/Resistor

Leakage Current

Crosstalk (see Text Circuit)

ESD Clamp

Positive Clamp

Negative Clamp

ESD Protection

Storage Temperature

Package Power Rating

1/17/2001

SCHEMATIC CONFIGURATION

±10%

C to 70

100mW

1µA @ 25

C MAX

< 5% (typical)

> 6V

< –6V

> 2KV

–60

C to 150

1.00W, MAX

C1100600

215 Topaz Street, Milpitas, California 95035

Tel: (408) 263-3214

Fax: (408) 263-7846

www.calmicro.com

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