Texas Instruments Corporation

Diljith Mathal Thodi

Abhijit Anant Patki

Anand Kannan

Anand Subramanian

Pedro Ramon Gelabert

Ramamurthy Vishweshwara

Uttam Kumar Agarwal

A circuit includes a programmable gain amplifier (PGA) having a PGA output. The circuit further includes a delta-sigma modulator having an input coupled to the PGA output. The circuit also includes a digital filter and a dynamic range enhancer (DRE) circuit. The digital filter is coupled to the delta-sigma modulator output. The DRE circuit is coupled to the delta-sigma modulator output and to the PGA. The DRE circuit is configured to monitor a signal level of the delta-sigma modulator output. Responsive to the signal level being less than a DRE threshold, the DRE circuit is configured to program the PGA for a gain level greater than unity gain and to cause the digital filter to implement an attenuation of a same magnitude as the gain level to be programmed into the PGA.

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Bengaluru, India

Diljith Mathal Thodi