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MAX1471

315MHz/434MHz Low-Power, 3V/5V ASK/FSK Superheterodyne Receiver

300MHz to 450MHz Superheterodyne ASK/FSK Receiver with Integrated Image Rejection Operates from 3V or 5V Supply

Overview

Technical Documents

Ordering Info

Status

Active: In Production.

Description

The MAX1471 low-power, CMOS, superheterodyne, RF dual-channel receiver is designed to receive both amplitude-shift-keyed (ASK) and frequency-shift-keyed (FSK) data without reconfiguring the device or introducing any time delay normally associated with changing modulation schemes. The MAX1471 requires few external components to realize a complete wireless RF digital data receiver for the 300MHz to 450MHz ISM bands.

The MAX1471 includes all the active components required in a superheterodyne receiver including: a low-noise amplifier (LNA), an image-reject (IR) mixer, a fully integrated phase-locked loop (PLL), local oscillator (LO), 10.7MHz IF limiting amplifier with received-signal-strength indicator (RSSI), low-noise FM demodulator, and a 3V voltage regulator. Differential peak-detecting data demodulators are included for both the FSK and ASK analog baseband data recovery. The MAX1471 includes a discontinuous receive (DRX) mode for low-power operation, which is configured through a serial interface bus.

The MAX1471 is available in a 32-pin thin QFN package and is specified over the automotive -40°C to +125°C temperature range.

Data Sheet

Download	Rev 4	(PDF, 323.2kB)
E-Mail

Key Features

ASK and FSK Demodulated Data on Separate Outputs
Specified over Automotive -40°C to +125°C Temperature Range
Low Operating Supply Voltage Down to 2.4V
On-Chip 3V Regulator for 5V Operation
Low Operating Supply Current
- 7mA Continuous Receive Mode
- 1.1µA Deep-Sleep Mode
Discontinuous Receive (DRX) Low-Power Management
Fast-On Startup Feature < 250µs
Integrated PLL, VCO, and Loop Filter
45dB Integrated Image Rejection
RF Input Sensitivity*
- ASK: -114dBm
- FSK: -108dBm
Selectable IF BW with External Filter
Programmable Through Serial User Interface
RSSI Output and High Dynamic Range with AGC

*0.2% BER, 4kbps, Manchester-encoded data, 280kHz IF BW

Applications/Uses

Automotive Remote Keyless Entry (RKE)
Garage Door Openers
Home Automation
Local Telemetry Systems
Medical Systems
Security Systems
Tire-Pressure Monitoring Systems
Wireless Keys
Wireless Sensors

Key Specifications:

ISM RF Receivers

Part Number

IF f_OUT
(MHz)

V_SUPPLY
(V)

I_SUPPLY
(mA)

Applications

Solutions

Band/ Freq.
(MHz)

Features

Footprint
(mm x mm)

Package/Pins

Smallest Available Pckg.
(mm²)

Industry Qualified

Budgetary Price

max w/pins

See Notes

MAX1471

10.7

2.4 to 3.6

4.5 to 5.5

Garage Door Openers

ISM

RKE

Remote Controls

Remote Keyless Entry

Security Systems

TPM

Wireless Sensors

300MHz to 450MHz

400MHz

300 to 450

-40C to +125C operation

1.1uA Deep-Sleep Mode Current

7mA Operating Supply Current

ASK and FSK Demodulated Data on Separate Outputs

On-Chip PLL, VCO and Loop Filter

Operates down to 2.4V

Operates from Single 3.3V or 5.0V Supplies

Programmable Through Serial

5.0 x 5.0

QFN 5x5/32

TQFN/32

Automotive - AECQ100

Automotive - General

$3.42 @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.

Diagram

Typical Application Circuit

Application Notes

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 3945		Path Loss in Remote Keyless Entry Systems
Tutorial 4636		Avoid PC-Layout "Gotchas" in ISM-RF Products
Tutorial 4686		Important Design Considerations for Heart-Rate and Fitness Monitors
Tutorial 4691		Introduction to Hearing Aids and Important Design Considerations
Tutorial 5100		General Layout Guidelines for RF and Mixed-Signal PCBs
Application Note 5142		Radio Link-Budget Calculations for ISM-RF Products

Product Guides

Wireless (PDF)

Reliability Reports

Reliability Report:	MAX1471.pdf AEC-MAX1471ATJ_B.pdf MAX1471ATJ.pdf
Show FIT data for:

Software/Models

none

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
MAX1471AGJ/VY+			Active	QFN 5x5;32 pin;QFN; Outline Drawing:21-0563 (PDF) Land Pattern: 90-0361 (PDF) Use pkgcode/variation: G3255Y+1*	-40°C to +125°C	See data sheet
MAX1471AGJ/VY+T			Active	QFN 5x5;32 pin;QFN; Outline Drawing:21-0563 (PDF) Land Pattern: 90-0361 (PDF) Use pkgcode/variation: G3255Y+1*	-40°C to +125°C	See data sheet
MAX1471ATJ			Active	TQFN;32 pin;26 mm² Outline Drawing:21-0140 (PDF) Land Pattern: 90-0001 (PDF) Use pkgcode/variation: T3255-3*	-40°C to +125°C	RoHS/Lead-Free: No Materials Analysis
MAX1471ATJ+			Active	TQFN;32 pin;26 mm² Outline Drawing:21-0140 (PDF) Land Pattern: 90-0001 (PDF) Use pkgcode/variation: T3255+3*	-40°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1471ATJ+T			Active	TQFN;32 pin;26 mm² Outline Drawing:21-0140 (PDF) Land Pattern: 90-0001 (PDF) Use pkgcode/variation: T3255+3*	-40°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1471ATJ-C3N			Active	TQFN;32 pin;26 mm² Outline Drawing:21-0140 (PDF) Land Pattern: 90-0001 (PDF) Use pkgcode/variation: T3255-3*	-40°C to +125°C	RoHS/Lead-Free: No Materials Analysis
MAX1471ATJ-T			Active	TQFN;32 pin;26 mm² Outline Drawing:21-0140 (PDF) Land Pattern: 90-0001 (PDF) Use pkgcode/variation: T3255-3*	-40°C to +125°C	RoHS/Lead-Free: No Materials Analysis
MAX1471ATJ/V+			Active	TQFN;32 pin;26 mm² Outline Drawing:21-0140 (PDF) Land Pattern: 90-0001 (PDF) Use pkgcode/variation: T3255+3*	-40°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1471ATJ/V+T			Active	TQFN;32 pin;26 mm² Outline Drawing:21-0140 (PDF) Land Pattern: 90-0001 (PDF) Use pkgcode/variation: T3255+3*	-40°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1471EVKIT-315			Active	KIT; Land Pattern: Not Available		See data sheet
Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX1471EVKIT-433			Active	KIT; Land Pattern: Not Available		See data sheet
MAX1471EVSYS-315			Active	KIT; Land Pattern: Not Available	-40°C to +125°C	See data sheet
MAX1471EVSYS-433			Active	KIT; Land Pattern: Not Available	-40°C to +125°C	See data sheet

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.

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[ 2004-05-12 ]

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Information Index

Overview		Technical Documents		Ordering Info		Related Products
Description Key Features Applications/Uses Key Specifications Diagram Notes and Comments		Data Sheet Application Notes Evaluation Kits Product Guides Reliability Reports Software/Models		Price and Availability Samples Buy Online Package Information Lead-Free Information		Similar Products by Function Similar Products by Application Evaluation Kits Products with Similar Part Numbers Products Used With This

Document Ref.: 19-3272 Rev 4; 2011-11-04
This page last modified: 2011-11-04