MAX2181:FM Automotive Low-Noise Amplifier

Highly Integrated FM Variable-Gain Low-Noise Amplifier Ideal for Use in Automotive FM and FM-Diversity

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).

Key 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
MAX2181: Simplified Block Diagram
MAX2181: Simplified Block Diagram
Applications/Uses
  • Automotive Active Antenna
DataSheet
titleDownload file
MAX2181 Data SheetMAX2181.pdf
Parametrics
Part NumberRF Freq.
(MHz)
RF Freq.
(MHz)
Noise Figure
(dB)
Gain
(dB)
ISUPPLY
(mA)
Footprint
(mm x mm)
Package/PinsBudgetary
Price
minmaxSee Notes
MAX218176162.52.756563.0 x 3.0TQFN/16$2.40 @1k
Design kits & evaluation modules
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX2181ETE+ActiveTQFN,;16 pin;9.6 mm²-40°C to +85°CLead Free
MAX2181ETE+TActiveQFN;-40°C to +85°CSee data sheet
MAX2181ETE/V+ActiveTQFN,;16 pin;9.6 mm²-40°C to +85°CLead Free
MAX2181ETE/V+TActiveTQFN,;16 pin;9.6 mm²-40°C to +85°CLead Free
MAX2181.pdf MAX2181
MAX2181.pdf MAX2181