MAX1470

315MHz Low-Power, +3V Superheterodyne Receiver

112dB Sensitivity, 300MHz-450MHz Super-Het Receiver Has 50dB of Integrated Image Rejection
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Status Explanations for product status codes

Active: In Production.

Description

The MAX1470 is a fully integrated low-power CMOS superheterodyne receiver for use with amplitude-shift-keyed (ASK) data in the 315MHz band. With few required external components, and a low-current power-down mode, it is ideal for cost- and power-sensitive applications in the automotive and consumer markets. The chip consists of a 315MHz low-noise amplifier (LNA), an image rejection mixer, a fully integrated 315MHz phase-lock-loop (PLL), a 10.7MHz IF limiting amplifier stage with received-signal-strength indicator (RSSI) and an ASK demodulator, and analog baseband data-recovery circuitry.

The MAX1470 is available in a 28-pin TSSOP package.

Data Sheet

Download this datasheet in PDF formatDownload Rev 1 (PDF, 228kB)
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An evaluation board is available: MAX1470EVKIT

Key Features

  • Operates from a Single +3.0V to +3.6V Supply
  • Built-In 53dB RF Image Rejection
  • -115dBm Receive Sensitivity*
  • 250µs Startup Time
  • Low 5.5mA Operating Supply Current
  • 1.25µA Low-Current Power-Down Mode for Efficient Power Cycling
  • 250MHz to 500MHz Operating Band (Image Rejection Optimized at 315MHz)
  • Integrated PLL with On-Board Voltage-Controlled Oscillator (VCO) and Loop Filter
  • Selectable IF Bandwidth Through External Filter
  • Complete Receive System from RF to Digital Data Out
 

Applications/Uses

  • Garage Door Openers
  • Medical Systems
  • Remote Controls
  • Remote Keyless Entry (RKE)
  • Security Systems
  • Toys
  • Video Game Controllers
  • Wireless Computer Peripherals
  • Wireless Sensors
   

Key Specifications:

ISM RF Receivers
Part Number IF fOUT
(MHz)
ISUPPLY
(mA)
Applications Solutions Band/ Freq.
(MHz)
Features Footprint
(mm x mm)
Budgetary
Price
See Notes
MAX1470  10.7 5.5
Garage Door Openers
ISM
RKE
Remote Controls
Remote Keyless Entry
Security Systems
TPM
Wireless Sensors
300MHz to 450MHz
400MHz
250 to 500
300 to 450
+3.0V to +3.6V Single-Supply Operation 6.3 x 9.7 $1.72 @1k
See All ISM RF Receivers (9)

Pricing Notes:

This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.



*See Note 2, AC Electrical Characteristics, in the full data sheet.

Diagram

MAX1470: Typical Application Circuit
Typical Application Circuit

Notes and Comments

Minimal External Components. 10.7MHz IF filter.

More Information

New Product Press Release   2001-09-07 ]

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Information Index

Document Ref.: 19-2135 Rev 1; 2002-10-29
This page last modified: 2009-05-13