Water Sensor Interface ASICs

BA121

Name: BA121 Conductivity Sensor Interface ASIC
Brand: AtomBit

Conductivity Sensor Interface ASIC

Single-channel conductivity and water-temperature ASIC for compact smart-water products.

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Key Specifications

Interface: UART command control
Supply: 3.3 V
Measurement Range: 0–6000 µS/cm

Product capabilities

Evaluate the capabilities that matter in your system

A compact single-channel conductivity and temperature ASIC for embedded water products. It integrates probe drive, signal conversion, automatic temperature correction and UART communication.

Patented conductivity conversion algorithm

0–6000 µS/cm conductivity range with error below 2% F.S.

Automatic temperature correction

0–100 °C temperature measurement with ±0.5 °C reference accuracy.

Single-channel conductivity detection

3.3 V supply, below 3 mA current and UART 9600 bps.

Bipolar probe drive

SOP8 package and bipolar probe drive for a small, stable reference design.

Overview

Product overview

A compact single-channel conductivity and temperature ASIC for embedded water products. It integrates probe drive, signal conversion, automatic temperature correction and UART communication.

Single-channel conductivity and water-temperature ASIC for compact smart-water products. • Patented conductivity conversion algorithm • Automatic temperature correction • Single-channel conductivity detection • Bipolar probe drive • Minimal external components

Engineering notes

Selection and system integration

010–6000 µS/cm conductivity range with error below 2% F.S.
020–100 °C temperature measurement with ±0.5 °C reference accuracy.
033.3 V supply, below 3 mA current and UART 9600 bps.
04SOP8 package and bipolar probe drive for a small, stable reference design.

Technical data

Key Specifications

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

Interface: UART command control
Supply: 3.3 V
Measurement Range: 0–6000 µS/cm
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
Select the probe cell constant and front-end resistor for the target range.
02
Use an NTC-equipped probe when compensated conductivity is required.
03
Calibrate the complete assembly in standards that bracket the intended operating range.

Public documents

Datasheets and product documents

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

PDF

Product documentBA121 中文规格书Download file ↓

BA121

Conductivity Sensor Interface ASIC

Evaluate the capabilities that matter in your system