ISL3084 Intersil Corporation, ISL3084 Datasheet

ISL3084

Manufacturer Part Number

ISL3084

Description

Prism 5GHz Vco

Manufacturer

Intersil Corporation

Datasheet

1.ISL3084.pdf (4 pages)

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Download datasheet (123Kb)

5GHz VCO

A fully integrated VCO requiring no external elements such

as inductors and varactors greatly simplifies low cost local

oscillator synthesized applications.

Included in this differential design is a low-power standby

function and a stable process and temperature biasing

operation.

The ISL3084 is housed in a 16 lead QFN package

well-suited for PCMCIA and miniPCI board applications.

Pinout

Pin Descriptions

3, 4, 7, 8, 9, 13, 14

PIN NUMBER

2, 6, 12

Paddle

VTUNE

GND

VCC

FILTER CAP1

FILTER CAP2

The ISL3084 is a 5GHz SiGe

monolithic VCO circuit designed to

simplify and reduce the cost and size

of miniature wireless transceivers.

ISL3084 (QFN)

VTUNE

NAME

OSC+

OSC-

GND

TOP VIEW

VCC

N/A

Data Sheet

Input tuning voltage from loop filter. Sensitivity to external injected noise to KVCO. Careful noise-free

layout recommended.

Supply pins. Requires high quality capacitor RF decoupling. Phase noise behavior proportional to supply

pushing specifications. Use good quality, low-frequency decoupling/filtering techniques.

Power enable control pin: VCO enabled high.

Differential VCO output. Terminate into 100Ω differential impedance. Terminate one end into 50Ω when

single end output with equivalent loss of power.

Use high quality .68

Ground

Floating paddle. Grounding is recommended.

VCC

OSC+

OSC-

GND

PRISM® is a registered trademark of Intersil Americas Inc. PRISM and design is a trademark of Intersil Americas Inc.

1-888-INTERSIL or 321-724-7143

F filter capacitor to ground.

F filter capacitor to VCC.

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

Features

• Single Supply . . . . . . . . . . . . . . . . . . . . . . . . . 2.7V to 3.3V

• Frequency . . . . . . . . . . . . . . . . . . . . . . . . . 4.9GHz typical

• Fully Integrated/No External Varactors or Resonators

• Isolation Output Buffer/Reduced Load Pulling

• Differential Design/Reduced Spurs

• Digitally Controlled Power Down Mode

• QFN Package:

Applications

• Systems Targeting IEEE802.11b, 11Mbps Standard

• Only required VCO function for Intersil PRISM3 chip set

• WLAN Applications.

• PCMCIA Wireless Transceivers

• TDMA Packet Protocol Radios

Simplified Block Diagram

Ordering Information

PART NUMBER TEMP. RANGE (

ISL3084IR

ISL3084IR-TK

Required

- Compliant to JEDEC PUB95 MO-220 QFN - Quad Flat

- Near Chip Scale Package footprint, which improves

VTUNE

No Leads - Package Outline

PCB efficiency and has a thinner profile

DESCRIPTION

Intersil (and design) is a registered trademark of Intersil Americas Inc.

July 2003

BIAS

GND

VCC

-40 to 85

VCO

GND

VCC

C) PACKAGE PKG. DWG. #

16 Ld QFN

Tape and Reel

GND

VCC

ISL3084

FN5042.4

L16.4x4

OSC+

OSC-

Related parts for ISL3084

ISL3084 Summary of contents

Page 1

... Included in this differential design is a low-power standby function and a stable process and temperature biasing operation. The ISL3084 is housed lead QFN package well-suited for PCMCIA and miniPCI board applications. Pinout ISL3084 (QFN) TOP VIEW ...

Page 2

... Phase Noise Phase Noise Temperature Coefficient Integrated Phase Noise @ 5GHz. Output Power Supply Pushing Load Pulling Output VSWR 2 ISL3084 Thermal Information Thermal Resistance (Typical, Note 1) +0.3V QFN Package Junction Temperature (Plastic Package .150 Maximum Storage Temperature Range . . . . . . . . . -65 For recommended soldering conditions see Tech Brief TB389. ...

Page 3

... Typical Application PLL LOOP FILTER 3 ISL3084 1000P 0.68 0.68 VCC VTUNE VCC OSC+ OSC- GND GND GND POWER ENABLE WELL FILTERED VCC 3.9pF LO_OUT 3.3pF 2:1 BALUM 3.3pF ...

Page 4

... However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com 4 ISL3084 L16.4x4 16 LEAD QUAD FLAT NO-LEAD PLASTIC PACKAGE (COMPLIANT TO JEDEC MO-220-VGGC ISSUE C) ...

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