AM/FM Car Antenna Low-Noise Amplifier - Maxim
Description
MAX2180
19-5322; Rev 0; 6/10 EVAALVUAAILTAIOBNLEKIT
AM/FM Car Antenna Low-Noise Amplifier
General Description
The MAX2180 is a highly integrated AM/FM variable-gain low-noise amplifier ideal for use in automotive active antenna applications.
The device features separate AM and FM signal paths, each providing 30dB of gain range, controlled by individual on-chip power detectors.
The AM signal path covers a 148kHz to 30MHz input frequency range, while the FM signal path covers 65MHz to 162.
5MHz.
The device integrates a voltage regulator and pass transistor, allowing operation using battery voltages in the +8V to +24V range.
On-chip thermal protection automatically limits junction temperatures during extreme thermal conditions.
The device is available in a small, 4mm x 4mm, TQFN package and operates over the extended industrial temperature range (-40NC to +85NC).
Applications
Automotive Active Antenna
Features
S +8V to +24V Supply Voltage Range S Integrated AGC Function Eliminates External Pin
Diodes S High Dynamic Range S Low-Noise Design S Low External BOM S Integrated Thermal Protection S Small Package (4mm x 4mm TQFN)
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAX2180ETG+
-40NC to +85NC
24 TQFN-EP*
+Denotes a lead(Pb)-free/ROHS-compliant package.
*EP = Exposed pad.
Simplified Block Diagram
FM VLDO
DET VLDO
VREG
AM VLDO
DET MAX2180
AM/FM VANT OUTPUT
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.
maxim-ic.
com.
AM/FM Car Antenna Low-Noise Amplifier
MAX2180
ABSOLUTE MAXIMUM RATINGS
VBATT.
.
.
.
-0.
5V to +26V LDO.
.
.
.
-0.
5V to +6V FMOUT, AMOUT.
.
-0.
5V to VLDO Short-Circuit Protection FMOU...
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