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.For all available packages, see the orderable addendum at the end of the data sheet.
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|# Input Channels|
|Active Supply Current (Typ) (mA)|
|Sleep Supply Current (Typ) (uA)|
|Supply Voltage (Max)|
|Supply Voltage (Min)|
|Operating Temperature Range (C)|
|Package Size: mm2:W x L (PKG)|
|Approx. Price (US$)|
| UART / USART |
TCI (Time Command Interface)
OWU (One-Wire UART)
| LIN / SCI |
|-40 to 105||-40 to 125|
|16TSSOP: 32 mm2: 6.4 x 5(TSSOP)||28TSSOP: 62 mm2: 6.4 x 9.7(TSSOP)|
|1.82 | 1ku||2.60 | 1ku|
|Fully integrated||Fully integrated|
|Order Now||Order Now|