Water Sensor Interface ASICs

BA311

Name: BA311 Miniature TDS Sensor Interface ASIC
Brand: AtomBit

Miniature TDS Sensor Interface ASIC

Compact automatic TDS measurement ASIC in SOT23-6 for space-constrained smart-water products.

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Key Specifications

Interface: BURST data output (Tx)
Supply: 3–5 V
Measurement Range: 0–3000 ppm TDS

Product capabilities

Evaluate the capabilities that matter in your system

A very small automatic TDS ASIC for cost- and space-sensitive products. It measures periodically and transmits the result from a Tx-only output, reducing MCU software and package footprint.

0–3000 ppm TDS measurement

0–3000 ppm TDS with error below 2% F.S.

Automatic 300 ms measurement cycle

3–5 V wide supply; approximately 1.6 mA average at 3.3 V in clean water.

3–5 V wide-voltage supply

Automatic result output every 300 ms through UART Tx-only, 9600 bps.

Bipolar drive reduces probe polarization

SOT23-6 package and -40 to +85 °C operating temperature grade.

Overview

Product overview

A very small automatic TDS ASIC for cost- and space-sensitive products. It measures periodically and transmits the result from a Tx-only output, reducing MCU software and package footprint.

Compact automatic TDS measurement ASIC in SOT23-6 for space-constrained smart-water products. • 0–3000 ppm TDS measurement • Automatic 300 ms measurement cycle • 3–5 V wide-voltage supply • Bipolar drive reduces probe polarization • BURST Tx data output and SOT23-6 package

Engineering notes

Selection and system integration

010–3000 ppm TDS with error below 2% F.S.
023–5 V wide supply; approximately 1.6 mA average at 3.3 V in clean water.
03Automatic result output every 300 ms through UART Tx-only, 9600 bps.
04SOT23-6 package and -40 to +85 °C operating temperature grade.

Technical data

Key Specifications

Use this information for initial selection; confirm final design and purchasing against the current approved datasheet and sample.

Interface: BURST data output (Tx)
Supply: 3–5 V
Measurement Range: 0–3000 ppm TDS
Accuracy: < 2% F.S.
Temperature: External compensation design dependent

Application readiness

Installation, calibration and validation

Validate the product with real samples, final mechanics and the intended electrical environment before production.

01
Design the host to receive the periodic Tx-only data stream; there is no command Rx pin.
02
Account for supply-referenced digital output level when connecting the MCU.
03
Calibrate with the final probe and mechanical arrangement because immersion geometry affects the scale factor.

Public documents

Datasheets and product documents

Documents are based on AtomBit public product information; confirm the current revision before design release.

PDF

Product documentBA311 中文规格书Download file ↓

BA311

Miniature TDS Sensor Interface ASIC