Milpitas, CA -- August 31, 2004 -- Linear Technology Corporation introduces a new high performance logarithmic type RF detector, the LT5534 that can accurately detect RF signals up to 3GHz. It is designed for cellular basestation receivers and transmitters, subscriber radios, instrumentation applications, and other high performance transceivers, enabling accurate RF power control and RSSI measurement.
The LT5534 has a log-linear transfer characteristic with a total dynamic range of 60dB. Its output is directly proportional to the logarithm of the average RF voltage input. The device has exceptional temperature stability. At 900MHz, the LT5534 provides repeatable measurement of RF power within ±1dB over a typical 50dB dynamic range, while spanning the temperature extremes of -40° C to 85°C. It has excellent sensitivity, detecting signals as small as -63dBm.
The LT5534 operates over a wide RF input frequency range, from 50MHz to 3GHz. Additionally, its output buffer has a 30MHz bandwidth that can track fast RF signal level transitions. It is capable of detecting full-scale RF changes with 38 ns delay. Internally, the chip contains temperature compensation circuitry that provides exceptionally stable and accurate measurements over the full range of temperature extremes.
The LT5534 operates from a single 2.7V to 5.25V supply, drawing a typical quiescent current of 7mA. The device is the first product offering this level of performance in a tiny, 6 lead 2mm x 2mm surface mount SC-70 package. The price in 1,000 piece quantities is $4.50. The product is available from stock.
Key Product Features:
* Detection Frequency Range: 50MHz to 3GHz
* 60dB Log Linear Dynamic Range
* Stability Over Temperature
* Low Power Consumption
* 2mm X 2mm Package
Linear Technology Corporation 1630 McCarthy Boulevard Milpitas, CA 95035-7417. Tel: 408-432-1900 or 1-800-4-LINEAR (for literature only)
LT5534 RF detector data sheet