Wireless IoT, Bluetooth® Low Energy, 4½ Digit, 100kHz True RMS Digital Multimeter


Design files


Many products are now becoming connected through the Internet of Things (IoT), including test equipment such as digital multimeters (DMM).  Enabled by Texas Instruments’ SimpleLink™ ultra-low power wireless microcontroller (MCU) platform, the TIDA-01012 reference design demonstrates a connected, 4½ Digit, 100kHz true RMS, DMM with Bluetooth® low energy connectivity, NFC Bluetooth pairing, and an Automatic Wake-Up feature enabled by TI’s CapTIvate™ technology.


  • 4 1/2 digit, 50K count resolution
  • Wireless MCU enabling bluetooth low energy (BLE) for IoT wireless
  • Automatic wake-up enabled by CapTIvate capacitive touch technology
  • Low power design and power management systems
  • BLE mobile app pairing enabled by NFC dynamic interface
  • Firmware-based true RMS measurements
??image.gallery.download_en_US?? View video with transcript Video

A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.


Reference design overview and verified performance test data

TIDRNY5.PDF (1290 K)

Detailed schematic diagram for design layout and components


Complete listing of design components, reference designators, and manufacturers/part numbers


Detailed overview of design layout for component placement

TIDRNY9.ZIP (1908 K)

Files used for 3D models or 2D drawings of IC components

TIDCCQ4.ZIP (1021 K)

Design file that contains information on physical board layer of design PCB

TIDRNY8.PDF (1928 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Bluetooth products

CC2640SimpleLink™ 32-bit Arm Cortex-M3 Bluetooth® Low Energy wireless MCU with 128kB Flash

Data sheet: PDF | HTML
Analog switches & muxes

TS3A241590.3-Ω on-state resistance, 3.3-V, 2:1 (SPDT), 2-channel analog switch with 1.8-V input logic

Data sheet: PDF | HTML
Analog switches & muxes

TS5A31660.9-Ω on-state resistance, 5-V, 1:1 (SPST), 1-channel analog switch (active high)

Data sheet: PDF | HTML
Auto-direction voltage translators

LSF0102Dual bidirectional multi-voltage level translator

Data sheet: PDF | HTML
Auto-direction voltage translators

LSF02044-Bit Bidirectional Multi-Voltage Level Translator for Open-Drain & Push- Pull

Data sheet: PDF | HTML
Battery charger ICs

BQ24232USB Friendly 0.5A Li-ion charger w/ Dynamic power Management, 10.5V OVP

Data sheet: PDF | HTML
Battery fuel gauges

BQ27426Single cell System-side battery fuel (gas) gauge w/Pre-programmed chemistry Profile

Data sheet: PDF | HTML
Buck converters (integrated switch)

TPS627402.2V-5.5V input, ultra-low-power 300mA step-down buck DCDC converter with 360nA Iq

Data sheet: PDF | HTML
ESD & surge protection ICs

TPD1E10B0612-pF, ±5.5V, ±30-kV ESD protection diode in 0402 and SOD-523 package

Data sheet: PDF | HTML
Fully differential amplifiers

THS4531Ultra low power 0.25mA, RRO, fully differential amplifier

Data sheet: PDF | HTML
General-purpose op amps

OPA313Single, 5.5-V, 1-MHz, low quiescent current (50-μA), RRIO operational amplifier

Data sheet: PDF
Linear & low-dropout (LDO) regulators

TPS782150-mA, nano-IQ, low-dropout voltage regulator with enable from -40°C to +125°C

Data sheet: PDF | HTML
MSP430 microcontrollers

MSP430FR2532Capacitive Touch MCU with 8 touch IO (8 sensors), 8KB FRAM, 1KB SRAM, 15 IO, 10-bit ADC

Data sheet: PDF | HTML
MSP430 microcontrollers

MSP430FR2533Capacitive Touch MCU with 16 touch IO (24 sensors), 16KB FRAM, 2KB SRAM, 19 IO, 10-bit ADC

Data sheet: PDF | HTML
MSP430 microcontrollers

MSP430FR2632Capacitive touch MCU with 8 touch IO (16 sensors), 8KB FRAM, 2KB SRAM, 15 IO, 10-bit ADC

Data sheet: PDF | HTML
MSP430 microcontrollers

MSP430FR2633Capacitive Touch MCU with 16 touch IO (64 sensors), 16KB FRAM, 4KB SRAM, 19 IO, 10-bit ADC

Data sheet: PDF | HTML
Other wireless technologies

RF430CL330HDynamic Dual Interface NFC Transponder

Data sheet: PDF | HTML
Precision ADCs (<=10MSPS)

ADS888518-Bit, 400-kSPS, 1-Ch SAR ADC with True-Differential Input, SPI Interface and Daisy-Chain

Data sheet: PDF
Precision op amps (Vos<1mV)

OPA333Micropower, 1.8-V, 17-µA zero-drift CMOS precision operational amplifier

Data sheet: PDF | HTML
Series voltage references

REF33252.5-V, 30-ppm/°C drift, 3.9-µA, 3-pin SOT-23, 3-pin SC70, 8-pin UQFN voltage reference

Data sheet: PDF | HTML
Supervisor & reset ICs

TPS3422Single-channel push-button controller with configurable delay & reset pulse

Data sheet: PDF | HTML

Start development



TIDA-01012 Firmware — TIDCCQ5.ZIP (87 K)

lock = Requires export approval (1 minute)
Support software

TIDA-01012 LabView Application — TIDCCQ6.ZIP (583 K)

Technical documentation

= Top documentation selected by TI
No results found. Please clear your search and try again.
View all 2
Type Title Date
* Design guide Wireless IoT, Bluetooth® Low Energy True RMS Digital Multimeter Design Guide (Rev. B) Jun. 20, 2017
More literature TIDA-01012 Firmware Oct. 11, 2016

Related design resources

Reference designs

TIDA-00879 Highly Integrated 4 1/2 Digit Low Power Handheld Digital Multimeter (DMM) Platform Reference Design TIDA-01014 Enhanced Accuracy Battery Fuel Gauge Reference Design for Low Power Industrial IoT Field Metering TIDC-01012 Industry 4.0 NFC and Bluetooth® Low Energy User Interface Reference Design for IoT Metering

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​