Patent ID: 8386986
Filing Date: 2013-02-26
Classification: H01L,H03H,H03L

Abstract:
1. A temperature controlled attenuator, comprising: a first attenuation circuit having a first variable attenuation level that is adjustable within a continuous attenuation range, the first attenuation circuit comprising: a control circuit adapted to receive an attenuation control signal, the control circuit being coupled to the first plurality of stacked transistors to control the first variable impedance level based on a signal level of the attenuation control signal and the control circuit being operably associated with the second plurality of stacked transistors to control the second variable impedance level based on the signal level of the attenuation control signal; and a temperature controlled circuit configured to receive a quiescent control signal having a quiescent signal level for defining a quiescent attenuation level within the continuous attenuation range of the first variable attenuation level at a reference temperature, and to detect an operating temperature, the temperature controlled circuit comprising an amplifier operable to generate an attenuation control adjustment signal having a signal level set in accordance with a gain of the amplifier and the operating temperature, wherein the gain is based on a temperature coefficient of an electronic component, the temperature controlled circuit being operable to adjust the quiescent signal level of the quiescent control signal in accordance with the attenuation control adjustment signal to generate the attenuation control signal.