Infrared transceiver with isolated analog output

Details Infrared transceiver with isolated analog output Infrared transceiver with isolated analog output

H - Electricity

04

B

H04B 10/14 (2006.01) H04B 10/158 (2006.01)

Patent

CA 2312516

An IR transceiver having a receiver chain with an isolated analog output, provides a transmission gate and unity gain buffer interposed between the amplifier output and an analog output pad. The transmission gate behaves as a switch, passing the analog output signal to the analog output pad only when an analog output is required. The unity gain buffer has a high input resistance, a low input capacitance, a unit gain and a low output impedance, so that the load of a DSP device or measuring instrument on the analog output pad is isolated and does not affect the performance of the receiver chain. Since the transfer rates of the transmission gate and the buffer are each a unity, the analog output pad provides a high fidelity analog output signal to the output buffer.

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