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MAX7042

308MHz/315MHz/418MHz/433.92MHz Low-Power, FSK Superheterodyne Receiver

Overview

Technical Documents

Ordering Info

Status

Active: In Production.

Description

The MAX7042 fully integrated, low-power, CMOS superheterodyne RF receiver is designed to receive frequency-shift-keyed (FSK) data at rates up to 66kbps nonreturn-to-zero (NRZ) (33kbps Manchester). The MAX7042 requires only a few external components to realize a complete wireless RF receiver at 308, 315, 418, and 433.92MHz.

The MAX7042 includes all the active components required in a superheterodyne receiver including a low-noise amplifier (LNA), an image-rejection (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 regulator. Differential peak-detecting data demodulators are included for baseband data recovery.

The MAX7042 is available in a 32-pin TQFN and is specified over the automotive -40°C to +125°C temperature range.

Data Sheet

Download	Rev 2	(PDF, 184.8kB)
E-Mail

An evaluation kit is available: MAX7042EVKIT

Key Features

+2.4V to +3.6V or +4.5V to +5.5V Single-Supply Operation
Four User-Selectable Carrier Frequencies 308, 315, 418, and 433.92MHz
-110dBm RF Input Sensitivity at 315MHz
-109dBm RF Input Sensitivity at 433.92MHz
Fast Startup (< 250µs)
Small 32-Pin TQFN Package
Low Operating Supply Current
- 6.2mA Continuous
- 20nA Power-Down
Integrated PLL, VCO, and Loop Filter
45dB Integrated Image Rejection
Selectable IF BW with External Filter
Positive and Negative Peak Detectors
RSSI Output

Applications/Uses

Home and Office Lighting Control
Home Automation
Local Telemetry Systems
Remote Keyless Entry (RKE)
Remote Sensing
Security Systems
Smoke Alarms
Tire-Pressure Monitoring (TPM)

Key Specifications:

ISM RF Receivers

Part Number

Ref. Clock Freq.
(MHz)

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

MAX7042

<=17.634

10.7

2.4 to 3.6

4.5 to 5.5

6.2

Garage Door Openers

ISM

RKE

Remote Controls

Remote Keyless Entry

Security Systems

TPM

Wireless Sensors

300MHz to 450MHz

Selectable 308/315/418/433.92MHz

300 to 450

-110dBm FSK sensitivity

-40C to +125C operation

6.2mA receive current

>45dB Image Rejection

On-Chip PLL, VCO and Loop Filter

Operates down to 2.4V

Operates from Single 3.3V or 5.0V Supplies

5.0 x 5.0

TQFN/32

Automotive - AECQ100

Automotive - General

$2.10 @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

[ 2005-06-06 ]

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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.: 19-3704 Rev 2; 2012-02-06
This page last modified: 2012-02-06