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Status

Active: In Production.

Data Sheet

FULL DATA SHEET (PDF, 360kB) Download   E-Mail

Description

The MAX9989 and MAX9990 LO buffers provide the high output (+14dBm to +20dBm) necessary to drive the LO inputs of high-linearity passive mixers, while offering 40dB reverse isolation to prevent LO pulling. The MAX9989 is internally matched for the cellular/GSM bands, and the MAX9990 is matched for the DCS/PCS/UMTS bands. The Typical Application Circuit provides a nominal +17dBm output power with ±1dB variation over supply, temperature, and input power. With two optional resistors, the output power can be precision set from +14dBm to +20dBm. The devices offer more than 35dB main driver output to PLL amp output isolation. Each device is offered in a 5mm x 5mm 20-pin thin QFN package with exposed paddle.

An evaluation kit is available:  MAX9989EVKIT, MAX9990EVKIT  

Key Features		Applications/Uses
±1dB Output Power Variation +14dBm to +20dBm Adjustable Output Power 40dB Reverse Isolation Better Than 35dB Main Driver Output to PLL Amp Output Isolation Low Output Noise: -170dBc/Hz at +17dBm 110mA Supply Current at +17dBm ESD Protection Isolated PLL Output (+3dBm)		Cellular/GSM/DCS/PCS/UMTS Base Station Tx/Rx LO Drive Coherent Receivers ISM Wireless LAN Local Multipoint Distribution Service Point-to-Point Systems Wireless Local Loop (WLL)

Diagram

Typical Operating Circuit

Application Notes

Application Note 1917: Simplifying Tomorrow's LO Drive Designs with the MAX9987-90 Family of LO Buffers/Splitters - MAX9989, MAX9990

Evaluation Kits

MAX9989EVKIT, MAX9990EVKIT

Design Guides

Wireless (PDF) Communications (PDF)

Reliability Reports

Show FIT data for: MAX9989 MAX9990 Request Reliability Report for: MAX9989 MAX9990

Software/Models

none

Ordering Information

Notes: Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day. Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

Devices: 1-8 of 8

MAX9989	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX9989ETP			Active	TQFN;20 pin;26 mm² Outline Drawing: 21-0140 (PDF) Land Pattern: 90-0008 (PDF) Use pkgcode/variation: T2055-3*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX9989ETP-T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX9989ETP+			Active	TQFN;20 pin;26 mm² Outline Drawing: 21-0140 (PDF) Land Pattern: 90-0008 (PDF) Use pkgcode/variation: T2055+3*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9989ETP+T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX9990	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX9990ETP			Active	TQFN;20 pin;26 mm² Outline Drawing: 21-0140 (PDF) Land Pattern: 90-0008 (PDF) Use pkgcode/variation: T2055-3*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX9990ETP-T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX9990ETP+			Active	TQFN;20 pin;26 mm² Outline Drawing: 21-0140 (PDF) Land Pattern: 90-0008 (PDF) Use pkgcode/variation: T2055+3*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9990ETP+T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet

More Information

New Product Press Release 2002-10-02

Related Products

MAX9987, MAX9988 +14dBm to +20dBm LO Buffers/Splitters with ±1dB Variation

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Technical Documents

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Description   Key Features   Applications/Uses   Key Specifications   Diagram

Data Sheet   Application Notes   Design Guides   Engineering Journals   Reliability Reports   Software/Models   Evaluation Kits

Price and Availability   Samples   Buy Online   Package Information   Lead-Free Information

Related Products   Notes and Comments   Evaluation Kits