Maxim > Products > Automotive > MAX7042
Maxim > Products > Wireless and RF > MAX7042

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

Application Notes

Application Note 3395		Requirements of Remote Keyless Entry (RKE) Systems
Tutorial 4636		Avoid PC-Layout "Gotchas" in ISM-RF Products
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

Reliability Reports

Reliability Report:	MAX7042.pdf AEC-MAX7042ATJ_A.pdf MAX7042ATJ.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
MAX7042ATJ+			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
MAX7042ATJ+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

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.

Similar Products by Function

MAX1479	300MHz to 450MHz Low-Power, Crystal-Based +10dBm ASK/FSK Transmitter
See All ISM RF Receivers (10 Products)

Similar Products by Application

Automotive: RKE RF Module > Transceiver

Evaluation Kits

MAX7042EVKIT

Evaluation Kit for the MAX7042

Products with Similar Part Numbers