Datasheet > MAXQ7667

MAXQ7667

更新时间： 2024-11-13 14:57:23

品牌	Logo	应用领域
亚德诺 - ADI		控制器微控制器
页数	文件大小	规格书
40页	455K
描述
基于16位RISC微控制器的超声测距系统

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MAXQ7667 数据手册

19-4598; Rev 1; 7/09

16-Bit, RISC, Microcontroller-Based,

Ultrasonic Distance-Measuring System

MAXQ67

General Description

Features

o Smart Analog Peripherals

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 dis-

tance 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.

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)

An integrated burst signal generator and echo reception

components process ultrasonic signals between 25kHz

and 100kHz. Echo reception components include a pro-

grammable 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

o Timer/Digital I/O Peripherals

o High-Performance, Low-Power, 16-Bit RISC Core

o Program and Data Memory

o Crystal/Clock Module

o 16 x 16 Hardware Multiplier with 48-Bit

Accumulator, Single Clock Cycle

o Power-Management Module

o JTAG Interface

referred noise is a low 0.7µV

. A programmable

RMS

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 pre-

ceding functions.

o Universal Asynchronous Receiver-Transmitter

(UART)

o Local Interconnect Network (LIN)

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 trans-

mitted 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, diag-

nostics, and additional signal processing.

See the Detailed Features section for complete list of features.

Ordering Information

RAM

(KB)

FLASH

(KB)

PART

PIN-PACKAGE

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 sup-

ply when three external power supplies are not avail-

able. 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 avail-

able in a 48-pin LQFP package and is specified to

operate from -40°C to +125°C.

MAXQ7667AACM/V+

48 LQFP

Note: All devices are specified over the -40°C to +125°C oper-

ating temperature range.

/V denotes an automotive qualified part.

+Denotes a lead(Pb)-free/RoHS-compliant package.

Pin Configuration appears at end of data sheet.

Applications

Automotive Parking

Vehicle Security

Automation

Handheld Devices

Industrial Processing

Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device

may be simultaneously available through various sales channels. For information about device errata, go to: ww.maxim-ic.com/errata.

________________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

12 3 4 5 6 7...40

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与MAXQ7667相关器件

型号	品牌	获取价格	描述	数据表
MAXQ7667AACM/V+	MAXIM	获取价格	16-Bit, RISC, Microcontroller-Based, Ultrasonic Distance-Measuring System
MAXQ7667AACM/V+T	MAXIM	获取价格	RISC Microcontroller, 16-Bit, FLASH, 16MHz, CMOS, PQFP48, 7 X 7 MM, ROHS COMPLIANT, LQFP-4
MAXQ7667AACM+T	MAXIM	获取价格	IC MCU 16BIT 32KB FLASH 48LQFP
MAXQ7670	MAXIM	获取价格	Microcontroller with 10-Bit ADC, PGA, 64KB Flash, and CAN Interface
MAXQ7670_09	MAXIM	获取价格	Microcontroller with 10-Bit ADC, PGA, 64KB Flash, and CAN Interface
MAXQ7670A	MAXIM	获取价格	Microcontroller with 12-Bit ADC, PGA, 64KB Flash, and CAN Interface
MAXQ7670AATL/V+	MAXIM	获取价格	Microcontroller with 12-Bit ADC, PGA, 64KB Flash, and CAN Interface
MAXQ7670AATL/V+T	MAXIM	获取价格	RISC Microcontroller, 16-Bit, FLASH, 16MHz, CMOS, 5 X 5 MM, ROHS COMPLIANT, TQFN-40
MAXQ7670AATL+	MAXIM	获取价格	Microcontroller with 12-Bit ADC, PGA, 64KB Flash, and CAN Interface
MAXQ7670ATL/V+	MAXIM	获取价格	Microcontroller with 10-Bit ADC, PGA, 64KB Flash, and CAN Interface

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