KR970008191A - Current Amplifier and Data Bus Circuitry - Google Patents

Abstract

The present invention relates to a current amplifier and a data bus circuit using the same. The current amplifier includes first and second field effect transistors N11 and N12 provided between input terminals I and Ib and a first electric potential supply terminal Vcc and output electric power And third and fourth field effect transistors N13 and N14 for supplying the first and second field effect transistors N13 and N14. The gate of the third field effect transistor is coupled to the source of the first input terminal and the first field effect transistor and the drain of the third field effect transistor is coupled to the gate of the first field effect transistor, The gate is coupled to the source of the second input terminal and the second field effect transistor, and the drain of the fourth field effect transistor is coupled to the gate of the second field effect transistor. Thereby, the input impedance can be reduced with a smaller circuit area than the conventional one, and high-speed operation of the data bus line can be realized without significantly increasing the circuit area.

Description

Current Amplifier and Data Bus Circuitry

Since this is a trivial issue, I did not include the contents of the text.

FIG. 4 is a circuit diagram of a data bus circuit including a current preamplifier according to a first embodiment of the present invention; FIG.

Claims (16)

First and second field effect transistors formed between an input terminal pair and a first potential supply terminal and third and fourth field effect transistors for supplying an output voltage to an output terminal pair, Wherein a gate of the first field effect transistor is coupled to a source of the first input terminal and the first field effect transistor and a gate of the first field effect transistor is coupled to a drain of the third field effect transistor; The gate of the fourth field effect transistor is coupled to the source of the second input terminal and the second field effect transistor and the gate of the second field effect transistor is coupled to the drain of the fourth field effect transistor Features a current amplifier. The current amplifier according to claim 1, further comprising a fifth field effect transistor for supplying a predetermined current to the sources of the third and fourth field-effect transistors when the current amplifier is activated. The current amplifier according to claim 1, wherein the sources of the third and fourth field effect transistors are commonly connected to a control line for controlling activation or deactivation of the current amplifier. The semiconductor device according to claim 2, wherein the gate, the drain, and the source of the fifth field effect transistor are connected to a control line for controlling activation or deactivation of the current amplifier, a source and a drain of the third and fourth field effect transistors Respectively. The method of claim 2, wherein the gate, drain, and source of the fifth field effect transistor are respectively coupled to a predetermined voltage line, a source of the third and fourth field effect transistors, and a control line for controlling activation or deactivation of the current amplifier And a current amplifier. 2. The semiconductor device according to claim 1, further comprising fifth and sixth transistors having different conductivity types from the third and fourth field effect transistors, respectively, which respectively turn on / off output currents passing through a corresponding one of the output terminal pairs Wherein the drain of the third field effect transistor is connected to the gate of the first field effect transistor and the drain of the fifth field effect transistor and the drain of the fourth field effect transistor is connected to the drain of the second field effect transistor A source of the third field effect transistor is connected to a gate of the field effect transistor and a drain of the sixth field effect transistor, the sources of the third and fourth field effect transistors are connected in common to a second potential supply terminal, And the gates of the fifth and sixth field effect transistors control the activation or deactivation of the current amplifier And the control signal line is commonly connected to the control line. First and second field effect transistors each for supplying a current to a corresponding one of input terminal pairs and third and fourth field effect transistors each having a gate connected to the input terminal pair, The drain of the third field effect transistor, the gate of the first field effect transistor, and the drain of the second field effect transistor are coupled to the second output terminal, and the drain of the fourth field effect transistor, A gate, and a drain of the first field effect transistor are coupled to a first output terminal. The current amplifier according to claim 7, wherein the sources of the third and fourth field effect transistors are commonly connected to a control line for controlling activation or deactivation of the current amplifier. The current amplifier according to claim 7, further comprising a fifth field effect transistor for supplying a predetermined current to the sources of the third and fourth field effect transistors when the current amplifier is activated. 10. The semiconductor device according to claim 9, wherein the gate, the drain, and the source of the fifth field effect transistor are connected to a control line for controlling activation or deactivation of the current amplifier, a source of the third and fourth field effect transistors, Respectively. ≪ Desc / Clms Page number 13 > 10. The semiconductor device according to claim 9, wherein the gate, the drain, and the source of the fifth field effect transistor are connected to a control line for controlling activation or deactivation of the amplifier, a source and a second potential supply terminal of the third and fourth field effect transistors Respectively. 10. The semiconductor device according to claim 9, wherein the gate, the drain, and the source of the fifth field effect transistor are connected to a predetermined voltage line, a source of the third and fourth field effect transistors, and a control line for controlling activation or deactivation of the current amplifier, And a current amplifier. 8. The semiconductor device according to claim 7, further comprising fifth and sixth electric fields, which are different in conduction type from the third and fourth field effect transistors, respectively, which respectively turn on / off output currents passing through a corresponding one of the output terminal pairs Effect transistor, the drain of the third field effect transistor is connected to the gate of the first field effect transistor and the drain of the sixth field effect transistor, and the drain of the fourth field effect transistor is connected to the second electric field The source of the third field effect transistor is connected to the gate of the second field effect transistor and the gate of the second field effect transistor is connected to the gate of the second field effect transistor, The source of the fifth field effect transistor is connected to the drain and the second output terminal of the second field effect transistor, And the second is connected to the first output terminal, the fifth and the sixth gate of the field effect transistor is a current amplifier, characterized in that it is connected in common to a control line for controlling the activation or deactivation of said current amplifier. 8. The semiconductor device according to claim 7, further comprising fifth and sixth field effect transistors for turning on / off the output current of the current amplifier in accordance with a control signal, and the drains of the first and second field effect transistors Each of the third and fourth field effect transistors being connected in common to a second potential supply terminal and the drain of the fifth field effect transistor being connected to the source of the sixth field effect transistor, The drain of the sixth field effect transistor is connected to the gate of the second field effect transistor, the gate of the third field effect transistor, the drain of the third field effect transistor, And the gates of the fifth and sixth field effect transistors are connected in common to a control line for controlling activation or deactivation of the current amplifier And a current amplifier. A plurality of first current amplifiers each using a first data bus pair as an input line pair and all or a part of which is connected to a second data bus line pair through its output terminal pair, Wherein the second current amplifier is connected to a corresponding one of the second data bus line pairs, and the second current amplifier is connected to a corresponding one of the data bus lines by a potential on the data bus line, A low input impedance circuit having a controlled pair of field effect transistors; Wherein each of the first current amplifiers is a current amplifier according to any one of claims 1 to 15. A current amplifier configured by an arrangement according to any one of claims 1 to 14; And a level adjusting circuit connected to an input data bus line pair of the current amplifier; Wherein the level adjustment circuit has a pair of field effect transistors whose gates are biased to a predetermined potential and whose sources are controlled according to the active or inactive states of the current amplifiers. ※ Note: It is disclosed by the contents of the first application.