Low supply linear equalizer with programmable peaking gain
First Claim
1. A linear equalizer, the linear equalizer comprising:
- sets of transistors connected between at least one input terminal of the linear equalizer and at least one output terminal of the linear equalizer;
a resistor connected to a supply voltage, to the at least one output terminal, and to the sets of transistors; and
first and second impedance elements connected between emitter terminals or source terminals of the sets of transistors and at least one fixed voltage, wherein a peaking gain of the linear equalizer is programmable by adjusting a direct current (DC) component of at least one input signal that is received at the at least one input terminal and that is applied to the sets of transistors.
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Accused Products
Abstract
Embodiments of linear equalizers are disclosed. In an embodiment, a linear equalizer includes sets of transistors, a resistor, and first and second impedance elements. The sets of transistors are connected between at least one input terminal of the linear equalizer and at least one output terminal of the linear equalizer. The resistor is connected to a supply voltage, to the at least one output terminal, and to the sets of transistors. The first and second impedance elements are connected between emitter terminals or source terminals of the sets of transistors and at least one fixed voltage. A peaking gain of the linear equalizer is programmable by adjusting a direct current (DC) component of at least one input signal that is received at the at least one input terminal and that is applied to the sets of transistors.
15 Citations
20 Claims
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1. A linear equalizer, the linear equalizer comprising:
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sets of transistors connected between at least one input terminal of the linear equalizer and at least one output terminal of the linear equalizer; a resistor connected to a supply voltage, to the at least one output terminal, and to the sets of transistors; and first and second impedance elements connected between emitter terminals or source terminals of the sets of transistors and at least one fixed voltage, wherein a peaking gain of the linear equalizer is programmable by adjusting a direct current (DC) component of at least one input signal that is received at the at least one input terminal and that is applied to the sets of transistors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A linear equalizer, the linear equalizer comprising:
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a first set of transistors and a second set of transistors connected between two input terminals of the linear equalizer and an output terminal of the linear equalizer, wherein the first set of transistors has a first transconductance, and wherein the second set of transistors has a second transconductance; a resistor connected to a supply voltage, to the output terminal, and to the first and second sets of transistors; and first and second impedance elements connected between emitter terminals or source terminals of the first and second sets of transistors and at least one fixed voltage, wherein a peaking gain of the linear equalizer is programmable by adjusting a direct current (DC) component of an input signal that is received at the two input terminals and that is applied to the first and second sets of transistors. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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20. A differential linear equalizer, the differential linear equalizer comprising:
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first, second, third, and fourth sets of transistors connected between four input terminals of the differential linear equalizer and two output terminals of the differential linear equalizer, wherein the first and third sets of transistors have a first transconductance, and wherein the second and fourth sets of transistors have a second transconductance; two resistors connected to a supply voltage, to the two output terminals, and to the first, second, third, and fourth sets of transistors; and first and second impedance elements connected between emitter terminals or source terminals of the first, second, third, and fourth sets of transistors and at least one fixed voltage, wherein a peaking gain of the differential linear equalizer is programmable by adjusting a direct current (DC) component of the two input signals that are received at the fourth input terminals and that are applied to the first, second, third, and fourth sets of transistors.
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Specification