AISG Integrated Transceiver

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.

Applications

* Base Stations * Tower Equipment

* 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