Abstract:
A differential switch (30) accepts a binary control signal (MSB) and its complement (which may be skewed with respect to the control signal) and latches both signals simultaneously. The latched output signals drive the control terminals of a differential switch pair (38) which connects one of two terminals to a third terminal, depending upon the state of the control terminals. The differential switch may optionally include an inverter (INV3) which complements the binary control signal, thus eliminating the need for external inversion of the control signal. The switch is particularly applicable for use in a digital to analog converter.
Abstract:
An integrated circuit chip is provided with at least a component on it. The component may be, for instance, an analog-to-digital converter or a digital-to-analog converter. The component has at least one connection leading off the chip to facilitate communication between the component and an external device. The chip additionally includes an active element, such as a variable resistor, for compensating for non-ideal electrical impedance experienced by signals at said connection.