AN7 Thermopad Series

AN7 Thermopad Series RF Variable Attenuator by Smiths Interconnect

AN7 Thermopad Series RF Variable Attenuator by Smiths Interconnect

The AN7 Thermopad Series from Smiths Interconnect are Temperature Variable Chip Attenuators that operate from DC to 6 GHz. The Thermopad is a totally passive absorptive microwave attenuator, which provides power dissipation that varies with temperature. The device can be used in any application that requires a known amount of attenuation change for a particular temperature shift. This is particularly useful for preventing gain loss over the temperature in various amplifier applications.

The patented Thermopad line of products that compensate for gain variation over temperature are totally passive, surface-mountable temperature variable attenuators. They require no bias or control voltage and do not generate distortion. It can be used in place of a standard chip attenuator to combine level setting or buffering and temperature compensation in a single chip design. This will reduce component count, increase reliability, and lower costs. Applications include power amplifiers, mixers, MMIC amplifiers, directional couplers and diode detectors.

These attenuators are available in attenuation values ranging from 0 to 10 dB in 1 dB steps and have a VSWR of less than 1.30:1. They can handle a CW power of up to 200 mW and a peak power of up to 2 watts (10 µS pulse width and 1% Duty Cycle). The attenuators have been constructed on an Alumina substrate with rugged thick film terminations and thick film thermistor technology, featuring a protective coating for added protection from various environmental conditions. These RoHS-compliant attenuators are available in a tape and reel package with multi-temperature shift options.

Product Details

    • Part Number : AN7 Thermopad Series
    • Manufacturer : Smiths Interconnect
    • Description : Temperature Variable Chip Attenuators from DC to 6 GHz

General Parameters

    • Applications : Broadcast, Instrumentation, Radar, SATCOM
    • Frequency : DC to 6 GHz
    • Channels : 1 Channel
    • Attenuation Range : 0 to 9 dB
    • Attenuation Accuracy : +/- 0.5 dB
    • Power : 200 mW
    • Peak Power : 2 Watt
    • Impedance : 50 Ohms
    • VSWR : 1.30:1
    • Package Type : Surface Mount
    • Operating Temperature : -55 to 150 Degree C
    • Storage Temperature : -65 to 150 Degree C
    • Temperature Coefficient : -0.003 to -0.009 dB/dB/ Degree C (TCA)
    • Grade : Commercial, Space
    • RoHS : Yes
    • Note : Temperature Coefficient Tolerance ±0.001 dB/dB/ Degree C

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