The MAX7044 crystal-referenced phase-locked-loop (PLL) VHF/UHF transmitter is designed to transmit OOK/ASK data in the 300MHz to 450MHz frequency range. The MAX7044 supports data rates up to 100kbps, and provides output power up to +13dBm into a 50Ω load while only drawing 7.7mA at 2.7V.
The crystal-based architecture of the MAX7044 eliminates many of the common problems with SAW-based transmitters by providing greater modulation depth, faster frequency settling, higher tolerance of the transmit frequency, and reduced temperature dependence. The MAX7044 also features a low supply voltage of +2.1V to +3.6V. These improvements enable better overall receiver performance when using the MAX7044 together with a superheterodyne receiver such as the MAX1470 or MAX1473.
A simple, single-input data interface and a buffered clock-out signal at 1/16th the crystal frequency make the MAX7044 compatible with almost any microcontroller or code-hopping generator.
The MAX7044 is available in an 8-pin SOT23 package and is specified over the -40°C to +125°C automotive temperature range.
|Part Number||Solutions||Applications||Band/ Freq.|
(mm x mm)
|MAX7044||300 to 450MHz-ISM RKE|
|300 to 450||3.0 x 3.0|
|See All ISM RF Transmitters (15)|
|See All Transmit System ICs (8)|
| 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 and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
|Device||Fab Process||Technology||Sample size||Rejects||FIT at 25°C||FIT at 55°C|
|Tutorial||5436||Getting Started with a Radio Design|
|Tutorial||5422||Crystal Calculations for ISM-RF Products|
|Tutorial||5417||How to Optimize an ISM Radio Frequency (RF) System|
|App Note||5281||Flexible Configuration of the MAX7060 ASK/FSK ISM-RF Transmitter|
|Tutorial||5265||Design a Crystal Oscillator to Match Your Application|
|App Note||5142||Radio Link-Budget Calculations for ISM-RF Products|
|Tutorial||5100||General Layout Guidelines for RF and Mixed-Signal PCBs|
|App Note||4929||Adapting Low-Band ISM Transmitters for High-Band Operation|
|Tutorial||4636||Avoid PC-Layout "Gotchas" in ISM-RF Products|
|App Note||4302||Small Antennas for 300MHz to 450MHz Transmitters|
|App Note||3815||Radiated Power and Field Strength from UHF ISM Transmitters|
|App Note||3589||Power Amplifier Theory for High-Efficiency Low-Cost ISM-Band Transmitters|
|App Note||3587||FCC and ETSI Requirements for Short-Range UHF ASK-Modulated Transmitters|
|App Note||3401||Matching Maxim's 300MHz to 450MHz Transmitters to Small Loop Antennas|
|App Note||3395||Requirements of Remote Keyless Entry (RKE) Systems|