WiMAX Transceiver Chip - AT86RF535B MAX-Link - Atmel

Atmel’s AT86RF535B MAX-Link single-chip WiMAX transceiver operates at 3.5 GHz with multiple bandwidth options to fulfill the spec of WiMAX subscriber and base station equipments. This Atmel’s WiMAX transceiver chip integrates a power amplifier driver, receive/transmit mixer, low-noise amplifier, receive/transmit filters, synthesizer, VCO, receive automatic gain control, and transmit power control.

Atmel’s AT86RF535B MAX-Link WiMAX Transceiver Chip

The AT86RF535B is based on the IEEE 802.16-2004 standard. The chip provides TX, RX, and frequency synthesis functions using the OFDM (Orthogonal Frequency Division Multiplexing) modulation technique. The AT86RF535B consists of a frequency-agile RF transceiver intended for use in 3.5-GHz licensed bands at data rates up to 26Mbps. The transceiver can be configured for either low-IF or zero-IF applications and requires no external filters. Configuration and control registers and a bi-directional data communications interface are available to communicate with existing baseband devices from different vendors.

Applications of AT86RF535B MAXLink 3.5GHz WiMAX Transceiver includes:

• 3.5 GHz Wireless Communication Devices
• IEEE® 802.16-2004 Radios

The AT86RF535B MAX-Link WiMAX Transceiver has internal calibration function which is performed between transmit and receive data frames. This function is independent from the MAC and baseband sub-system, improving local oscillator leakage characteristics.

AT86RF535B WiMAX Transceiver Block Diagram

The fractional-N synthesizer in the AT86RF535B WiMAX Transceiver implements a phase interpolation divider technique rather than the conventional modulus divider architecture. The phase interpolation divider provides fast tuning speed and good frequency resolution. The calibrated VCO can be tuned in less than 10 us to support 100 MHz HFDD ( Hybrid Frequency Division Duplexing) operations.

Key features of AT86RF535B MAX-Link Transceiver

• Single-chip 3.5GHz WiMAX Transceiver
• Low-IF/Zero-IF Transceiver Architecture; Requires No External Filters
• Integrated Self IQ Calibration
• HFDD Support
• Fully Differential Design
• Self Calibration Mode for RX / TX Filters
• Modulation up to 64QAM
• Support Channel Bandwidths of 3.5, 5.0, 7.0, 8.75MHz, and 10MHz
• Ultra-fast Fractional-N Synthesizer
• Phase Noise Synthesizer: 0.8° (-37dBc)
• Sensitivity < -74 dBm at 64-QAM, CR=¾, 7MHz BW
• Low Supply Voltage: 3.0 V
• RX/TX Operating Current: 270/315mA Typical
• TX Output PRF: 0 dBm, -34 dB EVM
• Low Power Off Current: < 20μA Typical
• Low External Component Count
• 56-lead QFN Package

The AT86RF535B 3.5GHz WiMAX Transceiver is fabricated in Atmel’s AT46000 advanced SiGe BiCMOS process technology and is packed in a 56-lead QFN package (8 x 8 mm).

Price: $14.95 each (10K lot qty).

Source: Atmel WiMAX Chips