MAXQ7667
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MAXQ7667

16-Bit, RISC, Microcontroller-Based, Ultrasonic Distance-Measuring System

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Lowest Cost, Complete Solution for Ultrasonic Sensors in Automotive Body-Electronics and Industrial Applications

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Info: : PRODUCTION tooltip
Part Details
Part Models 4
1ku List Price Starting From $12.50
Features
  • Smart Analog Peripherals
    • Dedicated Ultrasonic Burst Generator
    • Echo Receiving Path (Includes LNA, Sigma-Delta ADC)
    • 5-Channel, 12-Bit SAR ADC with 250ksps Sampling Rate
    • Internal Bandgap Voltage Reference for the ADCs (Also Accepts External Voltage Reference)
  • Timer/Digital I/O Peripherals
  • High-Performance, Low-Power, 16-Bit RISC Core
  • Program and Data Memory
  • Crystal/Clock Module
  • 16 x 16 Hardware Multiplier with 48-Bit Accumulator, Single Clock Cycle
  • Power-Management Module
  • JTAG Interface
  • Universal Asynchronous Receiver-Transmitter (UART)
  • Local Interconnect Network (LIN)
Additional Details
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The MAXQ7667 smart system-on-a-chip (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 low-noise amplifier (LNA), a 16-bit sigma-delta ADC to digitize the received echo signals, and digital signal processing (DSP). DSP limits noise with a bandpass filter, and creates an echo envelope through demodulation and lowpass filtering. Input referred noise is a low 0.7µVRMS. A programmable phase-locked loop (PLL) frequency synthesizer supplies the reference frequency for the burst generator and the clock for the echo receiver's digital filter. An embedded 16-bit MAXQ20 microcontroller (µC) controls all the preceding functions.

The µC optimizes the burst frequency and reception frequency for each transmission at any temperature. The MAXQ7667 achieves smart sensing by monitoring the echo signals and then actively changing the transmitted and received parameters to obtain optimum results. Digital filtering and burst synthesis do not require CPU intervention. This leaves all the CPU power available for echo optimization, communication, diagnostics, and additional signal processing.

The MAXQ7667 operates with three different power supply voltages: +5V, +3.3V, and +2.5V. Two internal linear regulators allow operation from a single +5V supply when three external power supplies are not available. Alternatively, the MAXQ7667 can control an external pass transistor to allow operation from a single supply voltage of +8V to +65V or more, depending on the external component tolerance. The device is available in a 48-pin LQFP package and is specified to operate from -40°C to +125°C.

Note: Designers must have the following documents to fully use all the features of this device. This data sheet contains pin descriptions, feature overviews, and electrical specifications. Errata sheets contain deviations from published specifications. The user's guides offer detailed information about device features and operation.

Applications

  • Automation
  • Automotive Parking
  • Handheld Devices
  • Industrial Processing
  • Vehicle Security
Part Models 4
1ku List Price Starting From $12.50

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
MAXQ7667AACM+
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MAXQ7667AACM+T
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MAXQ7667AACM/V+
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MAXQ7667AACM/V+T
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Part Models

Product Lifecycle

PCN

Dec 3, 2021

- 2218E

ASSEMBLY

MAXQ7667AACM+

PRODUCTION

MAXQ7667AACM/V+

PRODUCTION

Filter by Model

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Reset Filters

Part Models

Product Lifecycle

PCN

Dec 3, 2021

- 2218E

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ASSEMBLY

MAXQ7667AACM+

PRODUCTION

MAXQ7667AACM/V+

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

MAXQ7667EVKIT

Evaluation Kit for the MAXQ7667

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MAXQ7667EVKIT

Evaluation Kit for the MAXQ7667

Evaluation Kit for the MAXQ7667

Features and Benefits

  • Windows XP-, Windows Vista-, and Windows 7- Compatible Software
  • USB-PC Connection (Cable Included)
  • USB Powered (External Power Supply Not Required)
  • Real-Time Data Acquisition through the USB

Product Detail

The MAXQ7667 evaluation kit (EV kit) demonstrates distance measurement with the MAXQ7667.

The EV kit includes Windows XP®-, Windows Vista®-, and Windows® 7-compatible software for distance measurements data acquisition through a USB cable.

Applications

  • Automation
  • Automotive Parking
  • Handheld Devices
  • Industrial Processing
  • Vehicle Security

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