MAX2181A

FM Automotive Low-Noise Amplifier

General Description

The MAX2181A 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 is available in a small, 3mm x 3mm, TQFN

package and operates over the extended industrial tem-

perature range (-40ºC to +85ºC).

Applications

● AutomotiveActiveAntenna

● AutomotiveHeadUnit

Features

● +5V Supply Voltage

● Integrated AGC Function Eliminates

External Pin Diodes

● High Dynamic Range

● Low-Noise, Sub 3dB Noise Figure

● Low External BOM

● Small Package (3mm x 3mm TQFN)

● Integrated Power Detector

19-6612; Rev 0; 2/13

Simplified Block Diagram

Ordering Information appears at end of data sheet.

For related parts and recommended products to use with this part, refer

to

www.maximintegrated.com/MAX2181A.related.

EVALUATION KIT AVAILABLE

DET

FM

OUTPUT

MAX2181A