MAX35104ETL+ by Analog Devices

Gas Flow Meter SoC

Status: Active
Series: MAX35104
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock
The MAX35104 is a gas flow meter system-on-chip (SoC) targeted as an analog front-end solution for the ultrasonic gas meter and medical ventilator markets. With a time measurement accuracy of 700ps and automatic differential time of flight (TOF), the device makes for simplified computation of gaseous flow. Power consumption is the lowest available with ultra-low 62µA time-of-flight measurement and 125nA duty-cycled temperature measurement. Multi-hit (up to six per wave) capability with stop-enable windowing allows the device to be fine-tuned for the application. Internal analog switches, a configurable three-stage integrated operational amplifier chain amplifier, and an ultra-low input offset comparator provide the analog interface and control for a minimal electrical bill of material solution. A programmable high-voltage (up to 30V) pulse launcher provides up to 19dB of transducer launch amplitude adjustment to compensate for transducer aging and temperature, pressure, humidity affects. Early edge detection ensures measurements are made with consistent wave patterns to greatly improve accuracy and eliminate erroneous measurements. Built-in arithmetic logic unit provides TOF difference measurements and programmable receiver hit accumulators to minimize the host microprocessor access. For temperature measurement, the device supports a single 2-wire PT1000 platinum resistive temperature detector (RTD) or NTC thermistor. A simple 4-wire SPI interface allows any microcontroller to effectively configure the device for its intended measurement.

Where to Buy

Prices starting from US$9.56

Distributor Stock
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Newark Electronics
from US$14.20
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element14
from US$15.03
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Analog Devices
from US$9.56
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Farnell
from US$13.89
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Features

High Accuracy Flow Measurement for Billing and Leak Detection Time-to-Digital Accuracy Down to 700ps Measurement Range Up to 8ms 2 Channels: Single-Stop Channel
Time-to-Digital Accuracy Down to 700ps Measurement Range Up to 8ms
2 Channels: Single-Stop Channel
High Accuracy Temperature Measurement for Precise Flow Calculations One 2-Wire Sensor: PT1000, PT500 RTD, and Thermistor Support
One 2-Wire Sensor: PT1000, PT500 RTD, and Thermistor Support
Maximizes Battery Life with Low Device and Overall System Power Ultra-Low 62µA TOF Measurement and 125nA Duty-Cycled Temperature Measurement Event Timing Mode with Randomizer Reduces Host µC Overhead to Minimize System Power Consumption 2.3V to 3.6V Single-Supply Operation
Ultra-Low 62µA TOF Measurement and 125nA Duty-Cycled Temperature Measurement
Event Timing Mode with Randomizer Reduces Host µC Overhead to Minimize System Power Consumption
2.3V to 3.6V Single-Supply Operation
High Integration Solution Minimizes Parts Count and Reduces BOM Cost Built-In Real-Time Clock Small, 5mm x 5mm, 40-Pin TQFN Package -40°C to +85°C Operation
Built-In Real-Time Clock
Small, 5mm x 5mm, 40-Pin TQFN Package
-40°C to +85°C Operation

Specifications

Sensing Element RTDUltrasonic Piezoelectric TransducerUltrasonic Transducer
PGA Gain 10 to 29.95 (16 gains)
Calibration Method External microcontroller
Output Type Digital
ICC (mA) (typ) 0.006
Interface SPI
VSUPPLY (V) 2.3 to 3.6
Package/Pins TQFN/40
BudgetaryPrice (See Notes) 7.73

Last 6 months Inventory & Pricing History

MAX35104ETL+ Special Function by Analog Devices

GAS FLOW METER SOC 2.3V-3.6V TQFN-40

Semiconductors - ICs
> Special Function
Status: Unknown
Series: -
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock

Specifications

IC Function Gas Flow Meter SOC
Supply Voltage Min 2.3V
Supply Voltage Max 3.6V
IC Package Type TQFN
No. of Pins 40Pins
Operating Temperature Min -40°C
Operating Temperature Max 85°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant To Be Advised
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)

Last 6 months Inventory & Pricing History

Alternative Descriptions

Gas Flow Meter Soc, 2.3V-3.6V, Tqfn-40 | Newark Electronics
GAS FLOW METER SOC, 2.3V-3.6V, TQFN-40 | element14
TIME-TO-DIGITAL CONVERTER WITH | Analog Devices

Frequently Asked Questions

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Is the MAX35104ETL+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

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Authorised distributors including Newark Electronics, element14, Analog Devices and Farnell have stock available or on a lead time for MAX35104ETL+ .

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