Water meter
Products and reference designs
Water meter
Overview
Our integrated circuits and reference designs for water meters help you minimize energy consumption and maximize measurement accuracy. Both ultrasonic and traditional rotary meters benefit from low-current consumption and integration that extend battery life and reduce system cost.
Design requirements
- Ultrasonic flow measurement with low energy consumption.
- Wireless communications with the sensitivity and range to assure connectivity.
- Intelligent power management to maximize efficiency and battery life beyond 10 years.
Smart water meters require:
Explore applications similar in function and design
Block diagram
Find products and reference designs for your system.
Ultrasonic water meter
DC/DC power supply
Power management (16)
AC/DC & DC/DC converters (integrated FET)
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TPS61094—60-nA quiescent current boost converter with supercap management
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TPS63900—1.8-V to 5.5-V, 75-nA IQ buck-boost converter with input current limit and Dynamic Voltage Scaling
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TPS62840—60-nA quiescent current (IQ), 1.8-V to 6.5-VIN, high-efficiency 750-mA step-down converter
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TPS61030—1.8Vin, 4-A Switch, 96% Efficient Boost Converter w/20µA Iq in TSSOP-16
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TPS61240—2.3-V to 5.5-V input range, 3.5-MHz fixed frequency 450-mA boost converter
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TPS62730—Step Down Converter with Bypass Mode for Ultra Low Power Wireless Applications
Linear & low-dropout (LDO) regulators
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TPS7A03—Nanopower-IQ 200nA 200mA low-dropout (LDO) voltage regulator with fast transient response
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TLV755P—500mA high-PSRR low-IQ low-dropout voltage regulator with enable
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TLV771—150mA small-size high-PSRR low-dropout (LDO) linear regulator
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TPS7A02—200mA, nanopower-IQ (25 nA), low-dropout (LDO) voltage regulator with enable
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TPS783—150-mA, nano-IQ, low-dropout voltage regulator with enable from -40°C to +105°C
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TPS796—1-A, low-dropout voltage regulator with enable
Load switches
Battery management ICs (1)
Battery fuel gauges
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BQ35100—Battery fuel gauge for non-rechargeable batteries (lithium primary) and end-of-service monitor
Switches & multiplexers (6)
Analog switches & muxes
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TS12A12511—12-V, 2:1 (SPDT), 1-channel analog switch with negative signaling capability
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TMUX7209—44-V, latch-up Immune, 4:1, two-channel precision multiplexer with 1.8-V logic
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TMUX1511—5-V, 1:1 (SPST), 4-channel analog switch with powered-off protection & 1.8-V input logic
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CD74HC4053—5-V, 2:1 (SPDT) 3-channel analog switch
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TS5A4624—1-Ω on-state resistance, 5-V, 2:1 (SPDT) analog switch (6-pin SC70 package)
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TS5A3166—0.9-Ω on-state resistance, 5-V, 1:1 (SPST), 1-channel analog switch (active high)
Amplifiers (2)
General-purpose op amps
Data converters (1)
Precision ADCs
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ADS7142—12-bit 140-kSPS 2-ch nanopower SAR ADC with 1.8-V operation in 1.5-mm x 2-mm QFN package
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TIDA-00676—Power Solution for Battery Operated Meters With 30-dBm wM-Bus at 169 MHz Reference Design
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TIDA-01546—Battery and System Health Monitoring of Battery Powered Smart Flow Meters Reference Design
Technical documentation
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