MAX2181 Datasheet, PDF (1/10 Pages) Maxim Integrated Products – FM Automotive Low-Noise Amplifier

MAX2181
EVALUATION KIT AVAILABLE
FM Automotive Low-Noise Amplifier
General Description
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 tran-
sistor, allowing operation using battery voltages in the
+6V to +24V range. On-chip thermal protection automati-
cally 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 tem-
perature range (-40ºC to +85ºC).
Applications
● Automotive Active Antenna
Features
● +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
Ordering Information appears at end of data sheet.
For related parts and recommended products to use with this part, refer
to www.maximintegrated.com/MAX2181.related.
Simplified Block Diagram
FM
VCC
MAX2181
DET
V_CC
VREG
VANT
FM
OUTPUT
19-6558; Rev 0; 12/12