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PGA460-Q1 Datasheet(PDF) 1 Page - Texas Instruments |
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PGA460-Q1 Datasheet(HTML) 1 Page - Texas Instruments |
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1 / 112 page  VIN GND GNDP OUTA OUTB AVDD IOREG VPWR INP INN IO DECPL TXD RXD To ECU/ BCM 100 …F 100 nF 100 nF 100 nF CT C(INP) C(INN) To MCU (optional) Product Folder Order Now Technical Documents Tools & Software Support & Community An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. PGA460-Q1 SLASEC8 – FEBRUARY 2017 PGA460-Q1 Automotive Ultrasonic Signal Processor and Transducer Driver 1 1 Features 1 • Fully Integrated Solution for Ultrasonic Sensing • AEC-Q100 Qualified With the Following Results: – Device Temperature Grade 2: –40°C to +105°C Ambient Operating Temperature – Device HBM ESD Classification Level 2 – Device CDM ESD Classification Level C4B • 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 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 Presets of 12-Point Time-Varying Threshold for Object Detection • Timers to Measure Multiple Echo Distance and Duration • Integrated Temperature Sensor • Record Time for Object Detection up to 11 m • 128 Bytes of RAM for Echo Recording • 42 Bytes of User EEPROM to Store Configuration for Fast Initialization • One-Wire High-Voltage Time-Command Interface or USART Asynchronous Interface • CMOS Level USART Interface • Sensor Diagnostics (Decay Frequency and Time, Excitation Voltage), Supply, and Transceiver Diagnostics. 2 Applications • Ultrasonic Radar • Automotive Park Assist • Lane-Departure and Collision Warning • Object distance and Position Sensing • Presence and Proximity Detection • Drone and Robotics Landing Assist and Obstacle Detection • Automotive and Industrial Door-Opening Sensing • Automotive Motion Sensor for Intrusion Detection Alarm • Occupancy and Motion Sensors 3 Description The PGA460-Q1 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 direct- drive topology using external high-side FETs. The device can receive and condition the reflected echo signal for reliable object detection. This feature is accomplished using an analog front-end (AFE) consisting of a low-noise amplifier followed by a programmable time-varying gain stage feeding into an ADC. The digitized signal is processed in the DSP core for both near-field and far-field object detection using time-varying thresholds. The main communication with an external controller is achieved by either a time-command interface (TCI) or a one-wire USART asynchronous interface on the IO pin, or a CMOS-level USART interface on the RXD and TXD pins. The PGA460-Q1 can be put in ultra- low quiescent current low-power mode to reduce power consumption when not in use and can be woken up by commands on the communication interfaces. The PGA460-Q1 also includes on-chip system diagnostics which monitor transducer voltage during burst, frequency and decay time of transducer to provide information about the integrity of the excitation as well as supply-side and transceiver-side diagnostics for overvoltage, undervoltage, overcurrent and short-circuit scenarios. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) PGA460-Q1 TSSOP (16) 5.00 mm × 4.40 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. Typical Application Diagram (Transformer Drive) |
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