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MAX9981

825MHz to 915MHz, Dual SiGe High-Linearity Active Mixer

Industry's First Dual SiGe Mixer Reduces Cost, Space, and Component Count for 2.5G and 3G BTS Designs

Overview

Technical Documents

Ordering Info

Status

Active: In Production.

Description

The MAX9981 dual high-linearity mixer integrates a local oscillator (LO) switch, LO buffer, LO splitter, and two active mixers. On-chip baluns allow for single-ended RF and LO inputs. The active mixers eliminate the need for an additional IF amplifier because the mixer provides a typical overall conversion gain of 2.1dB.

The MAX9981 active mixers are optimized to meet the demanding requirements of GSM850, GSM900, and CDMA850 base-station receivers. These mixers provide exceptional linearity with an input IP3 of greater than +27dBm. The integrated LO driver allows for a wide range of LO drive levels from -5dBm to +5dBm. In addition, the built-in high-isolation switch enables rapid LO selection of less than 250ns, as needed for GSM transceiver designs.

The MAX9981 is available in a 36-pin QFN package (6mm x 6mm) with an exposed paddle, and is specified over the -40°C to +85°C extended temperature range.

Data Sheet

Download	Rev 0	(PDF, 424kB)
E-Mail

An evaluation kit is available: MAX9981EVKIT

Key Features

+27.3dBm Input IP3
+13.6dBm Input 1dB Compression Point
825MHz to 915MHz RF Frequency Range
70MHz to 170MHz IF Frequency Range
725MHz to 1085MHz LO Frequency Range
2.1dB Conversion Gain
10.8dB Noise Figure
42dB Channel-to-Channel Isolation
-5dBm to +5dBm LO Drive
+5V Single-Supply Operation
Built-In LO Switch with 52dB LO1 to LO2 Isolation
ESD Protection
Integrated RF and LO Baluns for Single-Ended Inputs

Applications/Uses

Cellular cdmaOne™ and cdma2000® Base Station Receivers
Digital and Spread-Spectrum Communication Systems
GSM 850/GSM 900 2G and 2.5G EDGE Base Station Receivers
Microwave Point-to-Point Links
TDMA and Integrated Digital Enhanced Network (iDEN®) Base-Station Receivers

Key Specifications:

Downconverter Mixers

Part Number

Channels

RF Freq.
(MHz)

LO Freq.
(MHz)

IF Freq.
(MHz)

Gain
(dB)

Input IP3
(dBm)

Noise Figure
(dB)

2RF-2LO/ 2LO-2RF
(dBc)

V_CC
(V)

5V Supply Current
(mA)

Footprint
(mm x mm)

Package/Pins

Budgetary Price

min

max

min

max

min

max

See Notes

MAX9981

825

915

725

1085

170

2.1

27.3

10.8

48.2

4.75 to 5.25

291

6.0 x 6.0

TQFN/36

$12.25 @1k

See All Downconverter Mixers (45)

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Diagram

Pin Configuration

More Information

New Product Press Release

[ 2002-11-06 ]

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Information Index

Overview		Technical Documents		Ordering Info		Related Products
Description Key Features Applications/Uses Key Specifications Diagram Notes and Comments		Data Sheet Application Notes Evaluation Kits Product Guides Reliability Reports Software/Models		Price and Availability Samples Buy Online Package Information Lead-Free Information		Similar Products by Function Similar Products by Application Evaluation Kits Products with Similar Part Numbers Products Used With This

Document Ref.: 19-2588 Rev 0; 2002-11-05
This page last modified: 2009-10-14