FM Automotive Low-Noise Amplifier

The MAX2181 is a highly integrated FM variable-gain low-noise amplifier ideal for use in automotive FM and FM-diversity active antenna applications. The device features an FM signal path, providing 30dB of gain range, controlled by an on-chip power detector. The FM signal path covers 76MHz to 162.5MHz.

The device integrates a voltage regulator and pass transistor, allowing operation using battery voltages in the +6V to +24V range. On-chip thermal protection automatically limits junction temperatures during extreme thermal conditions.

The device is available in a small, 3mm x 3mm, TQFN package and operates over the extended industrial temperature range (-40°C to +85°C).

Applications

* Automotive Active Antenna

* +6V to +24V Supply Voltage Range

* Integrated AGC Function Eliminates External Pin Diodes

* High Dynamic Range

* Low-Noise, Sub 3dB Noise Figure

* Low External BOM

* Integrated Thermal Protection

* Small Package (3mm x 3mm TQFN)

* Integrated Pass Device and Linear Regulator

* Integrated Power Detector

* Integrated Antenna Sense