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Active: In Production.

Data Sheet

FULL DATA SHEET (PDF, 304kB) Download   E-Mail

Description

The MAX2645 is a versatile, high-linearity, low-noise amplifier designed for 3.4GHz to 3.8GHz wireless local loop (WLL), wireless broadband access, and digital microwave radio applications. The device features an externally adjustable bias control, set with a single resistor, that allows the user to meet minimum linearity requirements while minimizing current consumption. The amplifier's high-gain, low-noise performance and adjustable input third-order intercept (IP3) allow it to be used as a low-noise amplifier (LNA) in the receive path, a PA predriver in the transmit path, or as an LO buffer. The MAX2645 features a logic-level gain control that provides a 25dB step reduction in gain, which improves IP3 performance for operation during high input signal level conditions. Supply current is reduced from 9mA in high-gain mode to 3mA in low-gain mode. The device also includes a logic-controlled shutdown mode, which reduces supply current to 0.1µA. The MAX2645 operates from a +3V to +5.5V supply and is offered in the miniature 10-pin µMAX® package (5mm x 3mm) with an exposed paddle. Its performance has been optimized for use with the MAX2683/MAX2684 3.5GHz SiGe mixers to provide a complete high-performance, front-end solution for 3.5GHz applications.

An evaluation kit is available:  MAX2645EVKIT  

Key Features		Applications/Uses
3.4GHz to 3.8GHz Frequency Range LNA Performance (High/Low-Gain Modes) Gain: +14.4dB/-9.7dB NF: 2.3dB/15.5dB Input IP3: +4dBm/+13dBm Supply Current: 9.2mA/2.7mA Highly Versatile Application Receive Path 1st and 2nd Stage LNA Transmit PA Predriver LO Buffer Adjustable IP3 and Supply Current 0.1µA Supply Current in Shutdown Mode +3.0V to +5.5V Single-Supply Operation 10-Pin µMAX-EP Package (5.0mm x 3.0mm)		Digital Microwave Radios Wireless Broadband Access Wireless Local Loop (WLL)

Diagram

Typical Operating Circuit

Application Notes

Application Note 697: Silicon Germanium (SiGe) Technology Enhances Radio Front-End Performance - MAX2645 Application Note 742: Impedance Matching and the Smith Chart: The Fundamentals - MAX2645 Application Note 806: RF ICs for 3.5GHz WLL Transceivers - MAX2645 Application Note 2874: 2.5GHz LNA with Gain Step for 802.11b/g and Bluetooth Applications - MAX2645 Application Note 2875: Three Methods of Noise Figure Measurement - MAX2645 Application Note 3041: LNA for WCDMA (UMTS) Features Gain Step - max2645 Application Note 3042: LNA for MMDS Band (2.65GHz) Features Gain Step - MAX2645 Application Note 4231: CMOS Source Resistance and Its Effects on Source-Follower Gain - MAX2645

Evaluation Kits

MAX2645EVKIT

Design Guides

Wireless (PDF)

Reliability Reports

Show FIT data for: MAX2645 Request Reliability Report for: MAX2645

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: 1-4 of 4

MAX2645	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX2645EUB+			Active	µMAX-EP;10 pin;26 mm² Outline Drawing: 21-0109 (PDF) Land Pattern: 90-0148 (PDF) Use pkgcode/variation: U10E+3*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX2645EUB+T			Active	µMAX-EP;10 pin;26 mm² Outline Drawing: 21-0109 (PDF) Land Pattern: 90-0148 (PDF) Use pkgcode/variation: U10E+3*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX2645EUB			Active	µMAX-EP;10 pin;26 mm² Outline Drawing: 21-0109 (PDF) Land Pattern: 90-0148 (PDF) Use pkgcode/variation: U10E-3*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX2645EUB-T			Active	µMAX-EP;10 pin;26 mm² Outline Drawing: 21-0109 (PDF) Land Pattern: 90-0148 (PDF) Use pkgcode/variation: U10E-3*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis

More Information

Topmark Coding: MAX2645 New Product Press Release 2000-08-04

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