Nested transimpedance amplifier
First Claim
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1. A nested transimpedance amplifier (TIA) circuit, comprising:
- a zero-order TIA having an input and an output;
a first operational amplifier (opamp) having an output and an input that communicates with said output of said zero-order TIA;
a first power supply input for applying a first voltage to the zero-order TIA;
a second power supply input for receiving a second voltage; and
a charge pump module that develops a third voltage based on the first voltage and the second voltage, wherein the third voltage is applied to the opamp.
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Abstract
A nested transimpedance amplifier (TIA) circuit comprises a zero-order TIA having an input and an output. A first operational amplifier (opamp) has an output and an input that communicates with said output of said zero-order TIA. A first power supply input applies a first voltage to the zero-order TIA. A second power supply input receives a second voltage. A charge pump module develops a third voltage based on the first voltage and the second voltage, wherein the third voltage is applied to the opamp.
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Citations
9 Claims
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1. A nested transimpedance amplifier (TIA) circuit, comprising:
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a zero-order TIA having an input and an output; a first operational amplifier (opamp) having an output and an input that communicates with said output of said zero-order TIA; a first power supply input for applying a first voltage to the zero-order TIA; a second power supply input for receiving a second voltage; and a charge pump module that develops a third voltage based on the first voltage and the second voltage, wherein the third voltage is applied to the opamp. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification