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US 12,308,531 B2Granted
Gain variation compensation using temperature attenuator
AssigneeRenesas Electronics America Inc.
InventorsMohammad Ghadiri Sadrabadi, Tumay Kanar
Life of this patent
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Abstract
Methods and apparatuses for signal attenuation is described. In an example, an attenuator can be configured to perform attenuation of signals for an integrated circuit. The attenuator can vary the attenuation with an ambient temperature. The attenuator can further adjust the attenuation based on a control signal applied to the attenuator. The control signal can be based on one or more of a temperature profile of the attenuator and a target gain variation of the integrated circuit.
Claims20
An apparatus comprising:
- an attenuator including an analog component, the attenuator being configured to:
- perform attenuation of incoming and outgoing signals for an integrated circuit, wherein the incoming and output signals are processed by a plurality of communication channels of the integrated circuit, and the attenuator is located outside of the plurality of communication channels;
- receive a control signal that depends on a temperature profile of the analog component in the attenuator and depends on a target gain variation of the integrated circuit, wherein the temperature profile is one of a proportional to absolute temperature (PTAT) profile and a complementary to absolute temperature (CTAT) profile that defines changes in a characteristic of the analog component with changes in an ambient temperature, the target gain variation is a minimal rate of change of a gain of the integrated circuit;
- and
- apply the control signal to bias the analog component to adjust the attenuation of the incoming and outgoing signals of the integrated circuit to decrease a current gain variation of the integrated circuit to reach the target gain variation.
2 more elements
A method comprising:
- performing, by an attenuator, attenuation of incoming and outgoing signals for an integrated circuit, wherein the incoming and output signals are processed by a plurality of communication channels of the integrated circuit, and the attenuator is located outside of the plurality of communication channels;
- receiving, by the attenuator, a control signal that depends on a temperature profile of an analog component in the attenuator and depends on a target gain variation of the integrated circuit, wherein the temperature profile is one of a proportional to absolute temperature (PTAT) profile and a complementary to absolute temperature (CTAT) profile that defines changes in a characteristic of the analog component with changes in an ambient temperature, and the target gain variation is a minimal rate of change of a gain of the integrated circuit;
- and
- applying, by the attenuator, the control signal to bias the analog component to adjust the attenuation of the incoming and outgoing signals of the integrated circuit to decrease a current gain variation of the integrated circuit to reach the target gain variation.
1 more element
An apparatus comprising:
- a controller configured to:
- receive a target gain variation of an integrated circuit comprising a plurality of communication channels that process incoming and outgoing signals of the integrated circuit, wherein the target gain variation is a minimal rate of change of a gain of the integrated circuit;
- determine a gain variation of the integrated circuit;
- and
- generate a control signal to bias an analog component in an attenuator located outside of the plurality of communication channels, wherein the control signal depends on a temperature profile of the analog component and depends on the target gain variation of the integrated circuit, the temperature profile is one of a proportional to absolute temperature (PTAT) profile and a complementary to absolute temperature (CTAT) profile that defines a changes in a characteristic of the analog component with an ambient temperature, bias of the analog component changes the characteristic of the analog component and changes to the characteristic adjusts an attenuation of the incoming and outgoing signals of the integrated circuit to decrease the determined gain variation of the integrated circuit to match the target gain variation.
2 more elements
Dependencies are inferred from the claim text.