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US07659740B2 System and method of digitally testing an analog driver circuit 失效
数字测试模拟驱动电路的系统和方法

System and method of digitally testing an analog driver circuit
Abstract:
Digital testing of an analog driver circuit is enabled using a circuit including a control circuit for generating signals, a differential driver circuit for receiving a differential input signal, amplifying the differential input signal and transmitting a differential output signal, a programmable termination impedance circuit for generating a differential termination impedance at the output node of the differential driver circuit, and a differential receiver circuit for converting the differential output signal to a single ended signal and transmitting the single ended signal. The testing includes skewing a differential output termination impedance, adjusting a differential receiver circuit voltage offset, selecting a differential driver circuit power level, enabling a decoder which activates only one differential driver circuit segment per test sequence, activating a segment, stimulating the differential driver circuit with digital test patterns, receiving differential driver circuit output, converting the output to a single-ended signal, and observing the single-ended signal.
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