Datasheet > MAX35102

MAX35102

更新时间： 2024-11-06 02:52:55

品牌	Logo	应用领域
美信 - MAXIM		/
页数	文件大小	规格书
37页	999K
描述
Time-to-Digital Converter Without RTC

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中文翻译

获取价格

数据手册

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MAX35102 数据手册

EVALUATION KIT AVAILABLE

MAX35102

Time-to-Digital Converter

Without RTC

General Description

Features and Beneﬁts

● High-Accuracy Flow Measurement for Billing and

The MAX35102 is a time-to-digital converter with built-in

amplifier and comparator targeted as a low-cost, analog

front-end solution for the ultrasonic heat meter and flow

meter markets. It is similar to the MAX35101, but with a

reduced feature set and without a real-time clock (RTC).

The package size has been reduced to 4mm x 4mm x

0.75mm with 0.4mm pin pitch.

Leak Detection

• Time-to-Digital Accuracy Down to 20ps

• Measurement Range Up to 8ms

• 2 Channels—Single-Stop Channel

● High-Accuracy Temperature Measurement for

Precise Heat and Flow Calculations

• Up to Four 2-Wire Sensors

With a time measurement accuracy of 20ps and auto-

matic differential time-of-flight (ToF) measurement, this

device makes for simplified computation of liquid flow.

• PT1000 and PT500 RTD Support

• 40mK Accuracy

● Maximizes Battery Life with Low Device and Overall

System Power

Power consumption is the lowest available with ultra-low

5.5μA ToF measurement and < 125nA duty-cycled tem-

perature measurement.

• Ultra-Low 5.5μA ToF measurement and < 125nA

Duty-Cycled Temperature Measurement

• 2.3V to 3.6V Single-Supply Operation

Applications

● Ultrasonic Heat Meters

● Ultrasonic Water Meters

● Ultrasonic Gas Meters

● High-Integration Solution Minimizes Parts Count and

Reduces BOM Cost

• Small, 4mm x 4mm, 32-Pin TQFN Package

• -40°C to +85°C Operation

Ordering Information appears at end of data sheet.

System Block Diagram

CMP_OUT/UP_DN

GND

STP_UP

DATA AND

INTX

ANALOG SWITCHING

AND BIAS CONTROL

TIME-TO-DIGITAL

CONVERTER

PROGRAMMABLE ALU

STATUS

REGISTERS

STP_DN

RSTX

3.6 V

VCC

SCK

INTERNAL

LDO

MICROCONTROLLER

BYPASS

DOUT

STATE MACHINE

CONTROLLER

100 NF LOW ESR

4-WIRE

INTERFACE

LAUNCH_UP

LAUNCH_DN

DIN

CONFIGURATION

REGISTERS

PULSE

LAUNCHER

CEX

PIEZOELECTRIC

TRANSDUCERS

HIGH SPEED AND 32 KHZ OSCILLATORS

TEMPERATURE MEASUREMENT

32KOUT

32KX1

32KXO

1K (50 PPM)

METAL FILM

32.768 KHZ

12 PF

4 MHZ

12 PF

100 NF COG (NP0) (30

PPM/C)

12 PF

19-7442; Rev 0; 11/14

12 3 4 5 6 7...37

中文翻译

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