Texas Instruments ADS1100A1IDBVTG4

Overview

ADS1100A1IDBVTG4 from Texas Instruments is a self-calibrating, 16-bit delta-sigma analog-to-digital converter with differential inputs, I²C interface, programmable gain amplifier (gain = 1/2/4/8), and 8–128 SPS data rate in SOT23-6 package. It operates ratiometrically using the supply as reference, supports single- or continuous-conversion modes, and targets high-resolution sensor measurement in space-constrained systems.

For engineers reviewing the ADS1100A1IDBVTG4 datasheet, ADS1100A1IDBVTG4 pinout, ADS1100A1IDBVTG4 application, or ADS1100A1IDBVTG4 equivalent, key selection considerations include its 0.0125% FSR INL, 4 µV_P-P noise, 90 µA active current, I²C address 1001001 (AD1), and SOT23-6 thermal performance up to +85°C.

Technical Context

The ADS1100A1IDBVTG4 implements a fully differential delta-sigma modulator with integrated digital filter and internal system clock (~275 kHz), eliminating external timing components. Its ratiometric architecture ties full-scale range directly to VDD/PGA, enabling stable measurements without precision voltage references.

Self-calibration runs continuously and automatically compensates for offset and gain drift across temperature; no user intervention or external calibration circuitry is required. The I²C interface supports Standard (100 kHz), Fast (400 kHz), and High-Speed (3.4 MHz) modes, with SCL as input-only and SDA bidirectional.

Key Specifications

Pinout & Package

SOT23-6 package (DBV), 1.6 mm × 2.9 mm × 1.15 mm body, 0.95 mm pitch, exposed pad not present. RoHS-compliant, moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar precision delta-sigma ADC applications.

Compared with ADS1115IRUGT and MCP3424-E/ST, the ADS1100A1IDBVTG4 delivers superior thermal stability via continuous self-calibration, minimal board area via SOT23-6, and lowest active current among 16-bit delta-sigma ADCs - making it optimal for single-channel, space- and power-constrained sensor nodes.

Availability

ADS1100A1IDBVTG4 is available at Aetrix Electronics and suitable for portable instrumentation, industrial process control, and smart transmitters requiring stable component supply, guaranteed long-term sourcing, and TI-authorized traceability.

Supply support for ADS1100A1IDBVTG4 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies, with decades of expertise in precision data acquisition and industrial-grade IC design.

The ADS1100 product line was designed specifically for ultra-compact, low-power, high-accuracy sensor interfacing - targeting applications where board space, battery life, and calibration stability outweigh channel count or speed requirements.

FAQ

What is the I²C address of the ADS1100A1IDBVTG4?

The ADS1100A1IDBVTG4 has a fixed 7-bit I²C slave address of 1001001 (0x49 in hexadecimal), corresponding to the AD1 variant per TI's ordering table. This address is factory-programmed and cannot be changed. The ADS1100A1IDBVTG4 responds only to this address on the I²C bus, enabling coexistence with up to seven other ADS1100 variants (A0–A7) on the same bus without conflict.

Does the ADS1100A1IDBVTG4 require an external voltage reference?

No, the ADS1100A1IDBVTG4 does not require an external voltage reference. It operates ratiometrically using the VDD supply as its reference voltage, so the full-scale input range is ±VDD/PGA. This eliminates the need for precision reference ICs or trimming, simplifying BOM and layout while maintaining accuracy proportional to supply stability.

How does the self-calibration function in the ADS1100A1IDBVTG4 work?

The ADS1100A1IDBVTG4 performs continuous, automatic self-calibration of offset and gain errors without user intervention. Calibration occurs internally during normal operation and compensates for drift due to temperature and time. The Electrical Characteristics table values already include calibration effects, and the feature cannot be disabled or manually triggered.

What is the maximum operating temperature for the ADS1100A1IDBVTG4?

The ADS1100A1IDBVTG4 is specified for operation from –40°C to +85°C ambient temperature. Its absolute maximum junction temperature is +150°C, and storage temperature range is –60°C to +150°C. Thermal performance is validated per TI's SBAS239B datasheet, with electrical characteristics guaranteed across the full –40°C to +85°C range.

Can the ADS1100A1IDBVTG4 measure bipolar input signals?

Yes, the ADS1100A1IDBVTG4 accepts bipolar differential input signals (VIN+ – VIN–), but neither input may go below GND – 0.2 V or above VDD + 0.2 V. For example, with VDD = 5 V, valid input common-mode range is –0.2 V to +5.2 V, and differential range is ±(VDD/PGA). This enables direct connection to bridge sensors or thermistors with appropriate biasing.