PGA460
- 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 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
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 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 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 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.
技術文件
設計與開發
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BOOSTXL-PGA460 — 具有轉換器的 PGA460-Q1 超音波感測器訊號調節評估模組
評估步驟
步驟 1：購買 PGA460-F5529-BNDL（或 BOOSTXL-PGA460 + MSP-EXP430F5529LP）
步驟 2：下載 GUI
步驟 3：下載 (...)
PGA460PSM-EVM — PGA460 超音波近距感測評估模組
若運送至歐洲，請訂購等效訊號調節裝置 BOOSTXL-PGA460
PGA460PSM 評估模組 (EVM) 是一款小型解決方案，展示雙面印刷電路板 (PCB) 間距，並符合 PGA460 超音波感測器訊號調節器的支援元件需求。此硬體型號只能在單靜態傳感器模式下操作。單靜態轉換器模式運用單一轉換器來傳送與接收超音波回波。
由於 PGA460 僅能以從屬裝置的方式操作，因此必須搭配一個主控器或處理器，才能進行 PGA460 的設定和運作。此 EVM 的使用指南著重於主要裝置，且僅在與 BOOSTXL-PGA460 評估模組 GUI 軟體配對時，將 MSP-EXP430F5529LP (...)
TINA-TI — 基於 SPICE 的類比模擬程式
TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
TIDA-01386 — 具有 IO-Link 的超音波距離感測器參考設計
TIDA-060024 — 超音波近距感測模組 (PSM) 參考設計
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| TSSOP (PW) | 16 | Ultra Librarian |
訂購與品質
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。