MAX2411A

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Low-Cost RF Up/Downconverter with LNA and PA Driver

Data Sheet (Rev. 1) Product Selection Table

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Overview

Low-Cost Silicon Bipolar Design
Integrated Upconvert/Downconvert Function
Operates from a Single +2.7V to +5.5V Supply
3.2dB Combined Receiver Noise Figure:
- 2.4dB (LNA)
- 9.2dB(mixer)
Flexible Power-Amplifier Driver:
- 18dBm Output Third-Order Intercept (OIP3)
- 35dB Gain-Control Range
LO Buffer for Low LO Drive Level
Low Power Consumption:
- 60mW Receive
- 90mW Full-Power Transmit
0.3µW Shutdown Mode
Flexible Power-Down Modes Compatible with MAX2510/MAX2511 IF Transceivers

The MAX2411A performs the RF front-end transmit/receive function in time-division-duplex (TDD) communication systems. It operates over a wide frequency range and is optimized for RF frequencies around 1.9GHz. Applications include most popular cordless and PCS standards. The MAX2411A includes a low-noise amplifier (LNA), a downconverter mixer, a local-oscillator buffer, an upconverter mixer, and a variable-gain power-amplifier (PA) driver in a low-cost, plastic surface-mount package. The MAX2411A's unique bidirectional, differential IF port reduces cost and component count by allowing the transmit and receive paths to share the same IF filter.

The LNA has a 2.4dB typical noise figure and a -10dBm input third-order intercept point (IP3). The downconverter mixer has a low 9.2dB noise figure and 4dBm input IP3. Image and local-oscillator filtering are implemented off-chip for maximum flexibility. The PA driver amplifier has 15dB of gain, which can be reduced over a 35dB range. Power consumption is only 60mW in receive mode and 90mW in transmit mode and drops to less than 3µW in shutdown mode.

For applications requiring separate, single-ended IF input and output ports, refer to the MAX2410 data sheet. For applications requiring only a receive function, Maxim offers a low-cost downconverter with LNA (see the MAX2406 data sheet).

Applications

DCS1800 or PCS1900 Single-Mode Phones
DECT
Iridium Handsets
ISM-Band Transceiver
PHS/PACS
PWT1900

Documentation

Data Sheet 1

MAX2411A: Low-Cost RF Up/Downconverter with LNA and PA Driver Data Sheet (Rev.1) 02/01/1998

Technical Articles 2

QPSK Modulation Demystified 05/01/2002

PCBs Layout Guidelines for RF & Mixed-Signal 09/14/2011

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Evaluation Kits

Evaluation Kit for the MAX2411A

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Features and Benefits

+2.7V to +5.5V Single-Supply Operation
50Ω SMA Inputs and Outputs on RF and IF Ports
Allows Testing of Shutdown Mode
Fully Assembled and Tested

Product Details

The MAX2411A evaluation kit (EV kit) simplifies testing of the MAX2411A. This EV kit allows evaluation of the MAX2411A's low-noise amplifier (LNA), receive downconverter mixer, transmit upconverter mixer, variable-gain power-amplifier (PA) driver, and power-management features.