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MAX9947：AISG Integrated Transceiver

Industry's First AISG-Compliant Fully Integrated Transceiver for Base Stations and Tower Equipment

The MAX9947 is an AISG-compliant, fully integrated transceiver. The MAX9947 receiver offers a typical dynamic range of 20dB and integrates a bandpass filter that operates in the 2.176MHz frequency with a narrow 200kHz bandwidth. The MAX9947 transmitter integrates a bandpass filter that is compliant with the AISG spectrum emission profile. It can modulate OOK signals up to 115.2kbps. The output power can be varied with external resistors from +7dBm to +12dBm to compensate for loss in the external circuitry and cabling. The MAX9947 also features a direction output to facilitate the RS-485 bus arbitration in tower-mounted equipment. The MAX9947 is available in a small, 3mm x 3mm 16-pin TQFN and is rated for operation in the -40°C to +105°C temperature range.

Key Features Receiver Wide Input Dynamic Range -15dBm to +5dBm in 50Ω Variable Transmitter Output Level from +7dBm to +12dBm AISG-Compliant Output Emission Profile AutoDirection Output No Need of Microcontrollers to Handle Bus Arbitration in Tower-Mounted Equipment Supports All AISG Data Rates 9.6kbps 38.4kbps 115.2kbps Bandpass Filter Compliant with AISG Protocol Centered Around 2.176MHz 3.0V to 5.5V Voltage Supply Independent Logic Supply Small, 3mm x 3mm 16-Pin TQFN Package

MAX9947: Functional Diagram Applications/Uses Base Stations Tower Equipment

DataSheet

Parametrics

Design kits & evaluation modules

• MAX9947EVKIT

Quality and Environmental Data

• MAX9947.pdf

Ordering Information