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MAX1473

315MHz/433MHz ASK Superheterodyne Receiver with Extended Dynamic Range

Industry's First 300MHz to 450MHz Superheterodyne Receiver with AGC and Integrated Image Rejection Operates from 3V or 5V Supplies

Overview

Technical Documents

Ordering Info

Status

Active: In Production.

Description

The MAX1473 fully integrated low-power CMOS superheterodyne receiver is ideal for receiving amplitude-shift-keyed (ASK) data in the 300MHz to 450MHz frequency range. Its signal range is from -114dBm to 0dBm. With few external components and a low-current power-down mode, it is ideal for cost- and power-sensitive applications typical in the automotive and consumer markets. The chip consists of a low-noise amplifier (LNA), a fully differential image-rejection mixer, an on-chip phase-locked-loop (PLL) with integrated voltage-controlled oscillator (VCO), a 10.7MHz IF limiting amplifier stage with received-signal-strength indicator (RSSI), and analog baseband data-recovery circuitry. The MAX1473 also has a discrete one-step automatic gain control (AGC) that drops the LNA gain by 35dB when the RF input signal is greater than -57dBm.

The MAX1473 is available in 28-pin TSSOP and 32-pin thin QFN packages. Both versions are specified for the extended (-40°C to +85°C) temperature range.

Data Sheet

Download	Rev 6	(PDF, 211.9kB)
E-Mail

An evaluation kit is available: MAX1473EVKIT

Key Features

Optimized for 315MHz or 433MHz ISM Band
Operates from Single 3.3V or 5.0V Supplies
High Dynamic Range with On-Chip AGC
Selectable Image-Rejection Center Frequency
Selectable x64 or x32 f_LO/f_XTAL Ratio
Low 5.2mA Operating Supply Current
< 2.5µA Low-Current Power-Down Mode for Efficient Power Cycling
250µs Startup Time
Built-In 50dB RF Image Rejection
Receive Sensitivity of -114dBm

Applications/Uses

Automotive Remote Keyless Entry (RKE)
Garage Door Openers
Home Automation
Local Telemetry Systems
Remote Controls
Security Systems
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

MAX1473

10.7

2.4 to 3.6

4.5 to 5.5

5.2

Garage Door Openers

ISM

RKE

Remote Controls

Remote Keyless Entry

Security Systems

TPM

Wireless Sensors

300MHz to 450MHz

400MHz

300 to 450

-115dBm Receive Sensitivity

5.2mA Operating Supply Current

53dB RF Image-Rejection

High Dynamic Range with On-Chip AGC

On-Chip PLL, VCO and Loop Filter

Operates from Single 3.3V or 5.0V Supplies

Selectable Image-Rejection Center Frequency

5.0 x 5.0

6.3 x 9.7

TQFN/32

TSSOP/28

Automotive - AECQ100

Automotive - General

$2.00 @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

More Information

New Product Press Release

[ 2003-02-04 ]

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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.: 19-2748 Rev 6; 2012-02-09
This page last modified: 2012-02-09