Automotive ultrasonic signal processor and transducer driver
Product details
Parameters
Package | Pins | Size
Features
- 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 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 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.
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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.
Technical documentation
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
Features
- Compatible with open- or closed-top ultrasonic transducers operating at a center frequency between 30-80kHz and 180-480kHz.
- Access to all communication interfaces offered by the PGA460-Q1, including: USART, TCI, and One-Wire UART.
- Swappable daughtercard allows custom driver-type and transducer (...)
Description
For shipments to Europe, please order the equivalent signal conditioning device BOOSTXL-PGA460
The PGA460PSM evaluation module (EVM) is a small-form-factor solution showcasing double-sided printed circuit board (PCB) spacing and the supporting component requirements for the PGA460 ultrasonic (...)
Features
- Compatible with ultrasonic transducers operating at a center frequency between 30 kHz to 80 kHz and 180 kHz to 480 kHz
- Able to generate maximum sound-pressure level using transformer-driven methods
- Access to all communication interfaces offered by PGA460, including:
- USART
- TCI
- One-wire UART
- Fully (...)
Software development
Design tools & simulation
Reference designs
Design files
-
download TIDA-060024 BOM.pdf (132KB) -
download TIDA-060024 Assembly Drawing.pdf (82KB) -
download TIDA-060024 PCB.pdf (341KB) -
download TIDA-060024 CAD Files.zip (872KB) -
download TIDA-060024 Gerber.zip (434KB)
Design files
-
download TIDA-01597 BOM.pdf (54KB) -
download TIDA-01597 Assembly Drawing.pdf (56KB) -
download TIDA-01597 PCB.pdf (44KB) -
download TIDA-01597 CAD Files.zip (373KB) -
download TIDA-01597 Gerber.zip (238KB)
Design files
-
download TIDA-01424 BOM.pdf (66KB) -
download TIDA-01424 Assembly Drawing.pdf (104KB) -
download TIDA-01424 PCB.pdf (517KB) -
download TIDA-01424 CAD Files.zip (599KB) -
download TIDA-01424 Gerber.zip (496KB)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
TSSOP (PW) | 16 | View options |
Ordering & quality
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- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
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