Main amplifier
First Claim
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1. An amplifier, comprising:
- a current converting circuit that amplifies signals applied from a first data bus and a second data bus and converts the amplified signal currents into a voltage; and
a voltage amplifier circuit that amplifies the voltage from the current converting circuit to produce an amplified output, wherein the current converting circuit includes a plurality of current mirrors, and each of the respective signals from the first and second data bus is amplified by at least two of the plurality of current mirrors.
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Abstract
An amplifier is provided that includes a current amplifying and current/voltage converting part that performs current amplification with respect to signals received from a first data bus and a second data bus. The current amplifying and current/voltage converting part further converts the amplified signal currents into a voltage. The amplifier further includes a voltage amplifying part that amplifies the voltage from the current amplifying part and current/voltage converting part to produce an amplified output.
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Citations
13 Claims
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1. An amplifier, comprising:
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a current converting circuit that amplifies signals applied from a first data bus and a second data bus and converts the amplified signal currents into a voltage; and
a voltage amplifier circuit that amplifies the voltage from the current converting circuit to produce an amplified output, wherein the current converting circuit includes a plurality of current mirrors, and each of the respective signals from the first and second data bus is amplified by at least two of the plurality of current mirrors. - View Dependent Claims (2, 3, 4, 12)
a first transistor having a first electrode coupled to a supply voltage, a second electrode coupled between the amplified signal current from the first data bus and a first input terminal of the voltage amplifier circuit, and a control electrode coupled for receiving a bias voltage; and
a second transistor having a first electrode coupled to the supply voltage, a second electrode coupled between the amplified signal current from the second data bus and a second input terminal of the voltage amplifier circuit, and a control electrode coupled for receiving the bias voltage.
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5. A main current sense amplifier, comprising:
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a first current amplifier circuit that amplifies a first data bus signal;
a second current amplifier circuit that amplifies a second data bus signal;
a converting circuit that converts the amplified first and second data bus signals into a voltage; and
a voltage amplifying circuit that amplifies the voltage output from the converting circuit, wherein the converting circuit has a current/voltage converter, comprising;
a first transistor having a first electrode coupled to a supply voltage, a second electrode coupled between the amplified first data bus signal and a first input terminal of the voltage amplifying circuit, and a control electrode coupled for receiving a bias voltage; and
a second transistor having a first electrode coupled to the supply voltage, a second electrode coupled between the amplified second data bus signal and a second input terminal of the voltage amplifying circuit, and a control electrode coupled for receiving the bias voltage. - View Dependent Claims (6, 7, 8, 9, 13)
a first current mirror amplifying a first time the second data bus signal; and
a second current mirror amplifying a second time the second data bus signal amplified by the first current mirror.
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7. The main current sense amplifier of claim 5, wherein the converting circuit comprises a pair of transistors having control electrodes coupled together, first electrodes coupled together and coupled to a first prescribed voltage, and second electrodes respectively receiving the amplified first and second data bus signals.
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8. The main current sense amplifier of claim 5, further comprising:
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a first enabling circuit that enables the first current amplifier circuit; and
a second enabling circuit that enables the second current amplifier circuit.
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9. The main current sense amplifier of claim 8, wherein said first and second enabling circuits are MOS transistors.
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13. The main current sense amplifier of claim 5,
wherein the first current amplifier comprises: -
a first current mirror amplifying a first time the first data bus signal; and
a second current mirror amplifying a second time the first data bus signal amplified by the first current mirror.
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10. A method of operating a current sense amplifier, comprising:
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amplifying a first signal current applied through a first data bus;
amplifying a second signal current applied through a second data bus;
converting each of the amplified first and second signal currents into a voltage using a converting circuit having a current/voltage converter, wherein the current/voltage converter comprises, a first transistor having a first electrode coupled to a supply voltage, a second electrode coupled between the amplified first data bus signal and a first input terminal of a voltage amplifying circuit, and a control electrode coupled for receiving a bias voltage, and a second transistor having a first electrode coupled to the supply voltage, a second electrode coupled between the amplified second data bus signal and a second input terminal of the voltage amplifying circuit, and a control electrode coupled for receiving the bias voltage; and
amplifying the voltage to generate an output signal with the voltage amplifying circuit, wherein the amplifying a first signal current includes, amplifying the first signal current applied through the first data bus;
amplifying the amplified first signal current; and
outputting the twice current amplified first signal current. - View Dependent Claims (11)
enabling a first current amplifier to amplify the first signal current; and
enabling a second current amplifier to amplify the second signal current.
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Specification