Overview
Features and Benefits
- 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)
Product Details
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.
Applications
- Digital Microwave Radios
- Wireless Broadband Access
- Wireless Local Loop (WLL)
Product Categories
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
Documentation & Resources
-
PCBs Layout Guidelines for RF & Mixed-Signal9/14/2011
-
CMOS Source Resistance and Its Effects on Source-Follower Gain6/27/2008
-
2.5GHz LNA with Gain Step for 802.11b/g and Bluetooth Applications11/21/2003
-
Noise Figure Measurement Methods and Formulas11/21/2003
-
Silicon Germanium (SiGe) Technology Enhances Radio Front-End Performance9/2/2002
-
Impedance Matching and Smith Chart Impedance7/22/2002
-
RF ICs for 3.5GHz WLL Transceivers11/14/2001
Design Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
PCN-PDN Information
Support & Discussions
Sample & Buy
Ordering FAQs
See our Ordering FAQs for answers to questions about online orders, payment options and more.
Buy Now Pricing
(**) Displayed Buy Now Price and Price Range is based on small quantity orders.
List Pricing
(*)The 1Ku list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
Lead Times
Please see the latest communication from our CCO regarding lead times.
Sampling
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.
Evaluation Boards
Pricing displayed is based on 1-piece.
Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.