MAX2838
Obsolete3.3GHz to 3.9GHz Wireless Broadband RF Transceiver
Industry's First Production-Ready, Single-Chip 3.3GHz to 3.9GHz WiMAX RF Transceiver
Part Details
- 3.3GHz to 3.9GHz Wide-Band Operation
- Master-Slave Modes with Coherent LO for MIMO
- Complete RF Transceiver, and PA Driver
- 0dBm Linear OFDM Transmit Power
- -70dBr Tx Spectral Emission Mask
- 2.8dB Rx Noise Figure
- Tx/Rx I/Q Error and LO Leakage Detection and Adjustment
- Automatic Rx DC Offset Correction
- Monolithic Low-Noise VCO with -39dBc Integrated Phase Noise
- Programmable Rx I/Q Lowpass Channel Filters
- Programmable Tx I/Q Lowpass Anti-Aliasing Filter
- Sigma-Delta Fractional-N PLL with 29Hz Step Size
- 60dB Tx Gain Control Range with 1dB Step Size, Digitally Controlled
- 94dB Rx Gain Control Range with 2dB Step Size, Digitally Controlled
- 60dB Analog RSSI Instantaneous Dynamic Range
- 4-Wire SPI™ Digital Interface
- I/Q Analog Baseband Interface
- Digital Tx/Rx/Shutdown Mode Control
- Low-Power CLOCKOUT Mode
- On-Chip Digital Temperature Sensor Readout
- +2.7V to +3.6V Transceiver Supply
- Low-Power Shutdown Mode
- Small 48-Pin Thin QFN Package (6mm x 6mm x 0.8mm)
The MAX2838 direct-conversion, zero-IF, RF transceiver is designed specifically for 3.3GHz to 3.9GHz wireless broadband systems. The MAX2838 completely integrates all circuitry required to implement the RF transceiver function, providing RF-to-baseband receive path, baseband-to-RF transmit path, VCO, frequency synthesizer, and baseband/control interface. The device includes a fast-settling sigma-delta RF synthesizer with smaller than 29Hz frequency steps. The MAX2838 supports 2Tx, 2Rx MIMO applications with a master device providing coherent LO to the slave device. The transceiver IC also integrates circuits for on-chip DC-offset cancellation, I/Q error, and carrier-leakage detection circuits. Only an RF bandpass filter (BPF), TCXO, RF switch, PA, and a small number of passive components are needed to form a complete wireless broadband RF radio solution.
The MAX2838 completely eliminates the need for an external SAW filter by implementing on-chip monolithic filters for both the receiver and transmitter. The baseband filters along with the Rx and Tx signal paths are optimized to meet the stringent noise figure and linearity specifications. The device supports up to 2048-FFT OFDM and implements programmable channel filters for 1.5MHz to 28MHz RF channel bandwidths. The transceiver requires only 2µs Tx-Rx switching time. The IC is available in a small 48-pin thin QFN package measuring only 6mm x 6mm x 0.8mm.
Applications
- 802.16-2004/802.16d Fixed WiMAX
- 802.16e MIMO Mobile WiMAX
- WiMAX Pico and Femto Basestations
- NLOS Wireless Broadband Systems
Documentation
Data Sheet 1
Reliability Data 1
Technical Articles 1
This is the most up-to-date revision of the Data Sheet.
Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| RF Transceivers > 1GHz 1 | ||
| MAX2837 | PRODUCTION | 2.3GHz to 2.7GHz Wireless Broadband RF Transceiver |
Evaluation Kits
Evaluation Kit for the MAX2838
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