MAXQ7667AACM/V+

The MAXQ7667AACM/V+ is a 16bit, RISC, microcontroller-based, ultrasonic distance-measuring system in 48 pin LQFP package. The MAXQ7667 smart SoC provides a time of flight ultrasonic distance-measuring solution. The device is optimized for applications involving large distance measurement with weak input signals or multiple target identification. The MAXQ7667 features high signal to noise ratio achieved by combining flexible electronics with the intelligence necessary to optimize each function as environmental and target conditions change. An integrated burst signal generator and echo reception components process ultrasonic signals between 25KHz and 100KHz. Echo reception components include a programmable gain LNA, a 16-bit sigma-delta ADC to digitize the received echo signals and digital signal processing (DSP). DSP limits noise with a band pass filter and creates an echo envelope through demodulation and low pass filtering. Input referred noise is a low 0.7μVRMS.

• Supply voltage range is 2.25V to 5.5V
• Dedicated ultrasonic burst generator
• Echo receiving path (includes LNA, sigma delta ADC)
• 5 channel, 12bit SAR ADC with 250Ksps sampling rate
• Internal bandgap voltage reference for the ADCs
• Timer/digital I/O peripherals
• High performance, low power, 16bit RISC core
• Crystal/clock module, 16 x 16 hardware multiplier with 48bit accumulator, single clock cycle
• Power management module, JTAG interface and UART, LIN interface
• Automotive AEC-Q100 grade 1 qualified

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Embedded Design & Development

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