Two 0–3000 ppm TDS measurement channels
Two 0–3000 ppm TDS channels, each below 2% F.S. reference error.
Water Sensor Interface ASICs
BA012
Dual-channel TDS Interface ASIC
Dual-channel sensing ASIC designed for inlet/outlet comparison in purification equipment.
Key Specifications
- Interface
- UART, 2400 / 9600 bps, 8N1
- Supply
- 3.3 V, ripple <20 mV; current <3 mA
- Measurement Range
- 0–3000 ppm TDS, dual channel
Product capabilities
Evaluate the capabilities that matter in your system
A dual-channel TDS ASIC for inlet/outlet comparison in reverse-osmosis and purification equipment. Both channels share the same integrated conversion and temperature-correction architecture.
Automatic temperature correction from 0–100 °C
0–100 °C measurement with ±0.5 °C reference accuracy.
Bipolar probe excitation reduces polarization
3.3 V, below 3 mA; UART supports 2400 or 9600 bps in SOP14.
SOP14 package with minimal external circuitry
The two connected TDS probes must be the same model; bipolar drive reduces polarization.
Overview
Product overview
A dual-channel TDS ASIC for inlet/outlet comparison in reverse-osmosis and purification equipment. Both channels share the same integrated conversion and temperature-correction architecture.
Dual-channel sensing ASIC designed for inlet/outlet comparison in purification equipment. • Two 0–3000 ppm TDS measurement channels • Automatic temperature correction from 0–100 °C • Bipolar probe excitation reduces polarization • SOP14 package with minimal external circuitry • Suitable for RO and nanofiltration equipment
Engineering notes
Selection and system integration
- 01Two 0–3000 ppm TDS channels, each below 2% F.S. reference error.
- 020–100 °C measurement with ±0.5 °C reference accuracy.
- 033.3 V, below 3 mA; UART supports 2400 or 9600 bps in SOP14.
- 04The two connected TDS probes must be the same model; bipolar drive reduces polarization.
Technical data
Key Specifications
Use this information for initial selection; confirm final design and purchasing against the current approved datasheet and sample.
- Interface
- UART, 2400 / 9600 bps, 8N1
- Supply
- 3.3 V, ripple <20 mV; current <3 mA
- Measurement Range
- 0–3000 ppm TDS, dual channel
- Accuracy
- < 2% F.S.
- Temperature
- 0–100 °C, ±0.5 °C
Application readiness
Installation, calibration and validation
Validate the product with real samples, final mechanics and the intended electrical environment before production.
- 01
Keep probes measuring the same water at least 1 m apart to reduce electrical interaction.
- 02
Match both NTC networks and probe types before channel-to-channel calibration.
- 03
Use isolated or exceptionally clean power in noisy appliance environments.
Public documents
Datasheets and product documents
Documents are based on AtomBit public product information; confirm the current revision before design release.
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