300MHz to 450MHz, Low-Power ASK Receiver Ensures Superb Receive Sensitivity Over Automotive Temperature Range
Note to Editor:
- The MAX7034 is a low-power, superheterodyne receiver for ASK data in the 300MHz to 450MHz frequency range.
- This device provides excellent receive sensitivity over the entire automotive temperature range, allowing the receiver to be mounted in locations prone to high temperatures.
- To ensure this performance, the critical functional blocks of the receiver have been designed to withstand high temperatures.
- Fully specified over the automotive temperature range, the MAX7034 is ideal for applications such as remote keyless-entry systems, car alarms, home security systems, remote controls, and garage door openers.
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SUNNYVALE, CA—June 9, 2008—Maxim Integrated Products (PINK OTC MARKETS: MXIM) introduces the MAX7034 low-power superheterodyne receiver for ASK data in the 300MHz to 450MHz frequency range. Only requiring a few external components to implement a complete receive-chain solution, this device integrates an LNA, image-rejection mixer, self-contained PLL block, 10.7MHz IF filter with RSSI, and analog-baseband data-recovery circuitry. To ensure excellent receive sensitivity in automotive and consumer applications, these critical blocks have been designed to withstand high temperatures. Providing high, -114dBm sensitivity and 44dB of image rejection, the MAX7034 is ideal for applications such as remote keyless-entry systems, car alarms, home security systems, remote controls, and garage door openers.
The architecture of the MAX7034 greatly simplifies implementation in any 300MHz to 450MHz RF system. The input impedance of the LNA can be adjusted by varying the off-chip degeneration inductor, allowing it to accommodate a wide range of antenna designs. To further enhance flexibility, the center frequency of the fully-differential, image-rejection mixer can be set to 315MHz, 375MHz, or 433MHz. Additionally, the integration of image rejection eliminates the need for an external SAW filter in many applications, thus increasing sensitivity, simplifying the antenna-matching network, saving board space, and reducing cost.
The MAX7034 operates from a single 5V supply, and draws less than 3.0µA in shutdown mode and only 6.7mA in receive mode. Fully specified over the -40°C to +125°C automotive temperature range, it is available in a 28-pin TSSOP package. Prices start at $2.50 (1000-up, FOB USA).
Maxim Integrated Products is a publicly traded company that designs, manufactures, and sells over $2 billion of high-performance semiconductor products annually. It was founded over 25 years ago with the mission to deliver innovative analog and mixed-signal engineering solutions that add value to its customers' products. To date, Maxim has developed over 5700 products serving the industrial, communications, consumer, and computing markets. For more information, go to www.maxim-ic.com.
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