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ADS1115BQDGSRQ1

TIADS1115BQDGSRQ1

Texas Instruments
Analog to Digital Converters - ADC Automotive 16-Bit AD C
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Overview

The ADS1115BQDGSRQ1 is an AEC-Q100 qualified, 16-bit precision analog-to-digital converter designed for high-accuracy automotive sensing applications. It features four multiplexed inputs that can be configured as two differential or four single-ended channels, along with an integrated programmable gain amplifier and a low-drift voltage reference.

Why Choose This Part

This converter is automotive grade (AEC-Q100 Grade 1), ensuring reliability across a wide temperature range of -40C to +125C. The integrated comparator and programmable data rates from 8 to 860 SPS provide flexibility for both low-power monitoring and faster sensor acquisition.

Applications

Battery Cell Monitoring
High-precision voltage measurement of individual battery cells in automotive battery management systems.
Current Sensing
Monitoring current shunt resistors in power electronics modules using differential input modes.
Temperature Measurement
Interfacing with NTC thermistors or RTDs for powertrain and cabin thermal management.
Fluid Level Sensing
Measuring analog signals from capacitive or resistive sensors in fuel or coolant tanks.

Getting Started

Communicate with the device using the I2C interface, which supports four pin-selectable addresses. Engineers should refer to the TI ADS1115-Q1 datasheet for register map details and consider using an I2C-level shifter if interfacing with 1.8V logic, as the device operates between 2.0V and 5.5V.

Also Consider

MCP3424 MCHPMicrochip Technology - An 18-bit multi-channel Delta-Sigma ADC for applications requiring even higher resolution than 16-bit.