Dual-path wideband and precision data acquisition system

Details Dual-path wideband and precision data acquisition system Dual-path wideband and precision data acquisition system

1990-01-22

1991-07-23

Mullins, James B.

Amplifiers

Signal feedback

Plural amplifier channels

324123C, 330 51, 330126, 330148, H03F 368

Patent

active

050346989

ABSTRACT:
A dual path amplifier circuit configuration to obtain wideband and precision DC response includes a wideband voltage amplifier, an input termination, a virtual ground feedback amplifier, and a compensated attenuator. The circuit allows precision DC and wideband measurements through a common signal probe while maintaining the input impedance of the measurement instrument. An additional feature of the circuit is to selectively allow DC measurements before or after an attenuator. The circuit can provide combined wideband and DC signal output or separate wideband and DC outputs. Additionally, the circuit can use a DC offset to null the DC level of an input signal.

REFERENCES:
patent: 3603891 (1971-09-01), Simeau
patent: 4517523 (1985-05-01), Miles

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