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US 2012/0139633 A1Published application
Semiconductor integrated circuit and tuner system including the same
AssigneePanasonic Corporation
InventorsTakafumi Nasu, George Hayashi, Katsumasa Hijikata
Life of this patent
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Abstract
A presented semiconductor integrated circuit, which processes an RF signal, achieves preferable distortion characteristics even at the low supply voltage. It includes an attenuator configured to attenuate an input signal with a variable attenuation, a source follower configured to receive an output of the attenuator, and an amplifying unit configured to perform a filtering process on an output of the source follower, and then amplify the output of the source follower with a variable gain.
Claims21
A semiconductor integrated circuit comprising:
- an attenuator configured to attenuate an input signal with a variable attenuation;
- a source follower configured to receive an output of the attenuator;
- and
- an amplifying unit configured to perform a filtering process on an output of the source follower, and then amplify the output of the source follower with a variable gain.
1 more element
A semiconductor integrated circuit comprising:
- an attenuator configured to attenuate an input signal with a variable attenuation;
- and
- a source follower configured to receive an output of the attenuator.
Dependencies are inferred from the claim text.