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A Wilson current mirror is a three-terminal circuit (Fig. 1) that accepts an input current at the input terminal and provides a "mirrored" current source or sink output at the output terminal. The mirrored current is a precise copy of the input current.
A sweep generator is a piece of electronic test equipment similar to, and sometimes included on, a function generator which creates an electrical waveform with a linearly varying frequency and a constant amplitude. Sweep generators are commonly used to test the frequency response of electronic filter circuits.
A MOSFET version of Figure 3 is shown in Figure 4, where MOSFETs M 3 and M 4 operate in ohmic mode to play the same role as emitter resistors R E in Figure 3, and MOSFETs M 1 and M 2 operate in active mode in the same roles as mirror transistors Q 1 and Q 2 in Figure 3. An explanation follows of how the circuit in Figure 3 works.
Wilson Connectivity home of WilsonPro, weBoost, and Zinwave, is the market leader in in-building wireless communication technology. With a 30-year legacy of innovation, the company holds over 265 issued or pending patents.
The most common method for delivering test data from chip inputs to internal circuits under test (CUTs, for short), and observing their outputs, is called scan-design. In scan-design, registers ( flip-flops or latches) in the design are connected in one or more scan chains , which are used to gain access to internal nodes of the chip.
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Figure 2: Small-signal circuit for finding output resistance of the Widlar source shown in Figure 1. A test current I x is applied at the output, and the output resistance is then R O = V x / I x. An important property of a current source is its small signal incremental output impedance, which should ideally be infinite.
Ariana Grande is taking it all in stride.. Fans of the pop star are up in arms after a reporter on the red carpet of the Golden Globes asked the actress if her grandmother was "still alive.". In ...