Texas Instruments ADS1100A0IDBVTG4

Overview

ADS1100A0IDBVTG4 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, achieves ±0.0125% FSR INL, and draws only 90 µA active current - ideal for portable instrumentation and low-power sensor signal conditioning.

For engineers reviewing the ADS1100A0IDBVTG4 datasheet, ADS1100A0IDBVTG4 pinout, ADS1100A0IDBVTG4 application, or ADS1100A0IDBVTG4 equivalent, this page delivers verified technical context, exact pin functions, real-world use cases, and validated alternative options - all grounded in TI's SBAS239B datasheet and official ordering information.

Technical Context

The ADS1100A0IDBVTG4 implements a fully differential delta-sigma modulator with integrated digital filter and internal system clock (nominal 275 kHz), eliminating external timing components. Its ratiometric architecture ties full-scale range directly to VDD and PGA setting: FSR = ±VDD/PGA.

It supports two operating modes - continuous conversion (ST/BSY always reads 1) and single-conversion (auto power-down post-conversion) - with configuration controlled via an 8-bit I²C register including DR1/DR0 (data rate), PGA1/PGA0 (gain), and SC bit (mode select). The device responds to I²C General Call Reset (00H + 06H) and is compatible with Standard (100 kHz), Fast (400 kHz), and High-Speed (3.4 MHz) I²C modes.

Key Specifications

Pinout & Package

SOT23-6 package (DBV), 1.6 mm × 2.9 mm × 1.15 mm body, gull-wing leads, thermal pad not present. Pin 1 marked by dot or notch orientation per TI DBV drawing.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADS1100A0IDBVTG4, ADS1115IDGSR offers more channels but consumes more power and occupies more board area, while MCP3421A0T-E/CH delivers higher resolution at lower speed but demands external calibration - making ADS1100A0IDBVTG4 optimal for space-constrained, maintenance-free, battery-operated 16-bit sensing.

Availability

ADS1100A0IDBVTG4 is available at Aetrix Electronics and suitable for portable instrumentation, industrial process control, and smart transmitters requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for ADS1100A0IDBVTG4 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 ICs.

The ADS1100 product line was designed specifically for ultra-compact, low-power, high-resolution sensor interface applications - prioritizing minimal external components, self-calibration, and seamless I²C integration in space- and energy-constrained systems.

FAQ

What is the I²C address of the ADS1100A0IDBVTG4?

The ADS1100A0IDBVTG4 has a fixed 7-bit I²C slave address of 1001000 (0x48), corresponding to the A0 variant per TI's ordering table. This address is factory-programmed and cannot be changed. The device responds to General Call Reset (0x00 + 0x06) but does not acknowledge other general call data bytes. ADS1100A0IDBVTG4 operates in Standard, Fast, and High-Speed I²C modes without configuration overhead.

Does the ADS1100A0IDBVTG4 require an external reference voltage?

No, the ADS1100A0IDBVTG4 uses a ratiometric architecture where the power supply (VDD) serves as the reference voltage. Full-scale range is defined as ±VDD/PGA, eliminating the need for external precision references and reducing BOM cost and board space. This design inherently rejects supply ripple but requires stable VDD regulation for optimal accuracy - ADS1100A0IDBVTG4 specifications assume VDD variation within datasheet limits (2.7 V to 5.5 V).

How does the programmable gain amplifier (PGA) affect the input range of the ADS1100A0IDBVTG4?

The PGA in ADS1100A0IDBVTG4 scales the differential input before conversion: gain settings of 1, 2, 4, or 8 reduce the full-scale input voltage range proportionally to ±VDD/PGA. For example, at VDD = 5 V and PGA = 8, the usable differential input span is ±0.625 V - enabling high-resolution measurement of millivolt-level signals like thermocouples. Input common-mode voltage remains constrained to GND – 0.2 V to VDD + 0.2 V regardless of PGA setting.

Can the ADS1100A0IDBVTG4 operate from a 3.3 V supply?

Yes, the ADS1100A0IDBVTG4 is fully specified for operation from 2.7 V to 5.5 V, including 3.3 V nominal supplies. At 3.3 V, its active supply current drops to ~210 µW power dissipation (90 µA × 3.3 V), and key parameters such as INL (±0.0125% FSR), noise (4 µV_P-P), and input impedance remain valid. The ratiometric reference ensures consistent scaling - e.g., at PGA = 1, full-scale range becomes ±3.3 V - making ADS1100A0IDBVTG4 ideal for mixed-voltage 3.3 V systems.

What is the purpose of continuous self-calibration in the ADS1100A0IDBVTG4?

Continuous self-calibration in ADS1100A0IDBVTG4 automatically corrects for offset and gain drift caused by temperature changes and aging, ensuring long-term accuracy without user intervention. The circuitry runs in the background during normal operation and cannot be disabled. All published electrical characteristics - including ±0.0125% INL and ±2.5 mV offset error - reflect calibrated performance across –40°C to +85°C, making ADS1100A0IDBVTG4 suitable for unattended industrial and medical applications.