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PGA460 - Ultrasonic Signal Processor and Transducer Driver

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General Description

The PGA460 device is a highly-integrated system on-chip ultrasonic transducer driver and signal conditioner with an advanced DSP core.

The device has a complimentary low-side driver pair that can drive a transducer either in a transformer based topology using a step-up transformer or in a directdrive topology using external high-side FETs.

The device can receive and condition the reflected echo signal for reliable object detection.

Overview

PGA460 SLASEJ4C – APRIL 2017 – REVISED FEBRUARY 2023 PGA460 Ultrasonic Signal Processor and Transducer Driver.

Key Features

  • Fully integrated solution for ultrasonic sensing.
  • Complimentary low-side drivers with configurable current limit supporting both transformer based and direct drive topology for transducer excitation.
  • Single transducer for both burst/listen or a transducer pair, one for burst and the other for listen operation.
  • Low-noise receiver with programmable 6-point time-varying gain (32 to 90 dB) with DSP (BPF, demodulation) for echo envelope detection.
  • Two pre.

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