PGA460TPW

Due to market price fluctuations,if you need to purchase or consult the price.You can contact us or emial to us:   sales@allicdata.com

1. Describe

The PGA460TPW device is a highly integrated on-chip ultrasound transducer driver and signaling system Regulator with advanced DSP core. equipment There is a free low-side driver pair that can Driving transducers with transformers Topologies using step-up transformers or direct drive topologies using external high-side FETs. This The device can receive and condition the reflected echo Reliable object detection signal. This function is Done using an analog front end (AFE) consists of a low noise amplifier followed by a Programmable time-varying gain stage feed an ADC. Digitized signals are processed in DSP The core of near-field and far-field object detection Use time-varying thresholds. The main communication with the external controller is via the Time Command Interface (TCI) or 1-Wire USART Asynchronous Interface on IO pin, or CMOS-grade USART interface on RXD and TXD pins. PGA460TPW can be placed in ultra-low Quiescent current low-power mode to reduce power consumption Consume when not in use, wake up via commands on the communication interface. The PGA460 also includes a system-on-chip Monitor sensor voltage during diagnostics Transducer burst, frequency and decay time Provide information about integrity Excitation and Power Side and Transceiver Side Overvoltage, undervoltage, overcurrent diagnosis and short circuit conditions.

2. Feature

    1. Fully integrated ultrasonic sensing solution

    2. Free low-side driver with configurable current limit, supporting transformer-based and direct-drive topologies sensor excitation

    3. Single sensor for burst/listen or a pair of sensors, one for burst and the other for listen operation

    4. Low noise receiver with programmable 6-point time-varying gain (32 to 90 dB) with DSP (BPF, demodulation) for echo envelope detection

    5. Two preset 12-point time-varying thresholds for object detection

    6. Timer to measure distance and duration of multiple echoes

    7. Integrated temperature sensor

    8. Recording time of object detection up to 11 m

    9. 128 bytes of RAM for echo recording

  10. 42 bytes of user EEPROM for configuration storage for fast initialization

  11. Single wire high voltage time command interface or USART asynchronous interface

  12. CMOS level USART interface

  13. Sensor diagnostics (attenuation frequency and time, excitation voltage), power supply and transceiver diagnostics.

3. Application

    1. Ultrasonic radar

    2. Object distance and position sensing

    3. Presence and proximity detection

    4. Drone and robotic landing assistance and obstacle detection

    5. Occupancy and motion sensors

4. Pin configuration

5. Pin Description

6. Application Information

The PGA460TPW device must be paired with an external sensor. The PGA460 device drives the transducer and then filters and processes the return echo signal sensed by the transducer. The transducer should be selected based on resonant frequency, input voltage requirements, sensitivity, beam pattern and decay time. The PGA460 device meets most sensor requirements by adjusting the drive frequency, drive current limit, band-pass filter factor, and low-pass filter factor. External transformer or p-channel The MOSFETs should be chosen to meet the input voltage requirements of the sensor and have a saturation current rating equal to or greater than the configured drive current limit of the PGA460 device. Interface options include USART, TCI, and 1-wire UART. After the burst-and-listen loop is completed, the PGA460 device can be called to return the distance, amplitude and width of the echo through the communication interface.