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MAX1470

315MHz Low-Power, +3V Superheterodyne Receiver

112dB Sensitivity, 300MHz-450MHz Super-Het Receiver Has 50dB of Integrated Image Rejection

Overview

Technical Documents

Ordering Info

Status

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	Rev 1	(PDF, 228kB)
E-Mail

An evaluation kit 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 f_OUT
(MHz)

I_SUPPLY
(mA)

Applications

Solutions

Band/ Freq.
(MHz)

Features

Footprint
(mm x mm)

Package/Pins

Smallest Available Pckg.
(mm²)

Budgetary Price

max w/pins

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

TSSOP/28

64.7

$1.80 @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 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

Typical Application Circuit

Application Notes

Tutorial 749		Use Selectivity to Improve Receiver Intercept Point
Application Note 1017		How to Choose a Quartz Crystal Oscillator for the MAX1470 Superheterodyne Receiver
Application Note 1018		How to Modify an Existing Design from a TDA5200 or TDA5201 to a MAX1470 Superheterodyne Receiver
Application Note 1773		Designing Remote Keyless Entry (RKE) Systems
Application Note 1774		Remote Keyless Entry Systems Overview
Application Note 1776		MAX1470 Superheterodyne Receiver FAQ
Application Note 1830		How to Tune and Antenna Match the MAX1470 Circuit
Application Note 1836		Improving Receiver Sensitivity with External LNA
Tutorial 1955		Fast Start-Up Oscillator (FOX) Boosts Superhet Performance
Application Note 2815		Calculating the Sensitivity of an ASK Receiver
Application Note 3395		Requirements of Remote Keyless Entry (RKE) Systems
Application Note 3435		Manchester Data Encoding for Radio Communications
Application Note 3671		Data Slicing Techniques for UHF ASK Receivers
Application Note 3928		Automotive Linear Regulators Minimize Quiescent Current
Tutorial 4636		Avoid PC-Layout "Gotchas" in ISM-RF Products
Tutorial 4651		Web Seminar: Wireless Technology Tutorial
Tutorial 5100		General Layout Guidelines for RF and Mixed-Signal PCBs
Application Note 5142		Radio Link-Budget Calculations for ISM-RF Products

Reliability Reports

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Software/Models

MAX1470 Gerber File

Ordering Information

Filters:

Part Number:

Package:

Temperature:

Tape and Reel

Sample

Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX1470EUI+			Active	TSSOP;28 pin;64.7 mm² Outline Drawing:21-0066 (PDF) Land Pattern: 90-0171 (PDF) Use pkgcode/variation: U28+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1470EUI+T			Active	TSSOP;28 pin;64.7 mm² Outline Drawing:21-0066 (PDF) Land Pattern: 90-0171 (PDF) Use pkgcode/variation: U28+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

Notes and Comments

Minimal External Components. 10.7MHz IF filter.

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Evaluation Kits

MAX1470EVKIT

Evaluation Kit for the MAX1470

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