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Texas Instruments ADS1100A4IDBVR
- Part No.:
- ADS1100A4IDBVR
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- SOT-23-6
- Datasheet:
-
ADS1100A4IDBVR.pdf
- Description:
- IC ADC 16BIT SIGMA-DELTA SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,349
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Product details
Overview
ADS1100A4IDBVR from Texas Instruments is a self-calibrating, 16-bit delta-sigma analog-to-digital converter with differential inputs, I²C interface, programmable gain amplifier (PGA = 1/2/4/8), and 8–128 SPS data rate in SOT23-6 package. It operates ratiometrically using the supply voltage as reference, achieves ±0.0125% FSR INL, and draws only 90 µA active current - ideal for precision sensor signal conditioning in space-constrained, low-power systems.
For engineers reviewing the ADS1100A4IDBVR datasheet, ADS1100A4IDBVR pinout, ADS1100A4IDBVR application, or ADS1100A4IDBVR equivalent, this page delivers verified technical context, exact pin functions, real-world use cases, and validated alternative options for industrial sensing, portable instrumentation, and smart transmitter designs.
Technical Context
The ADS1100A4IDBVR implements a fully differential delta-sigma modulator with integrated digital filter and internal system clock (~275 kHz nominal), eliminating external timing components. Its ratiometric architecture ties full-scale range directly to VDD/PGA, enabling stable measurements without external reference.
It supports two operating modes - continuous conversion (ST/BSY always high) and single conversion (auto power-down post-conversion) - with configurable data rate (8/16/32/128 SPS) and PGA gain via I²C-accessible 8-bit configuration register. The device features continuous self-calibration of offset and gain errors, with no user intervention required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | Up to 16 bits with no missing codes; actual resolution depends on data rate (12–16 bits), e.g., 16-bit at 8 SPS. |
| INL | ±0.0125% of FSR max at 16-bit mode, PGA = 1 - ensures high linearity for precision DC measurements. |
| Data Rate | Selectable 8 / 16 / 32 / 128 samples per second - trade-off between noise performance and update speed. |
| PGA Gain | Programmable 1×, 2×, 4×, or 8× - enables sub-millivolt signal digitization without external amplification. |
| Supply Range | 2.7 V to 5.5 V - compatible with common battery and rail voltages; ratiometric operation removes need for stable reference. |
| Active Current | 90 µA typical at 5 V - enables multi-year operation in coin-cell-powered sensor nodes. |
| I²C Address | Fixed 7-bit address 1001100b (0x4C) - one of eight factory-programmed variants; avoids bus conflicts in multi-device systems. |
Pinout & Package
SOT23-6 package (DBV), 1.6 mm × 2.9 mm × 1.15 mm body, gull-wing leads, moisture sensitivity level 1. Pin 1 marked by dot or beveled edge; marking "AD4" indicates I²C address 1001100.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (AD0) | I²C address input | Factory-configured logic level; for ADS1100A4IDBVR, AD0 = HIGH (1001100 address); not user-controllable. |
| 2 (VIN+) | Differential analog input (+) | Non-inverting input; accepts voltage from GND – 0.2 V to VDD + 0.2 V; impedance = 2.4 MΩ / PGA. |
| 3 (GND) | Analog/digital ground | Common reference for analog inputs, digital interface, and internal circuitry; must be low-impedance connection. |
| 4 (VIN–) | Differential analog input (–) | Inverting input; same voltage range and impedance as VIN+; enables rejection of common-mode noise. |
| 5 (VDD) | Power supply | Single 2.7–5.5 V supply; serves as conversion reference; requires 0.1 µF bypass capacitor near pin. |
| 6 (SCL) | I²C clock input | Input-only (slave mode); supports Standard (100 kHz), Fast (400 kHz), and High-Speed (3.4 MHz) modes. |
| 7 (SDA) | I²C data bidirectional | Open-drain I/O; requires external pull-up; transmits output code and receives configuration writes. |
Key Features
| Feature | Design Value |
|---|---|
| Continuous self-calibration | Automatically corrects offset and gain drift over temperature and time - eliminates manual calibration in field-deployed sensors. |
| Low-noise performance | 4 µVP-P (16-bit, 8 SPS) - enables resolution of <1 µV signals when combined with PGA = 8. |
| Ratiometric operation | Full-scale range = ±VDD/PGA - removes dependency on external voltage reference stability and cost. |
| Ultra-low power idle | 0.05 µA typical in power-down mode - extends battery life in wake-on-event sensor architectures. |
| Differential input architecture | 8 MΩ common-mode and 2.4 MΩ/PGA differential input impedance - reduces loading error on bridge and thermistor sensors. |
Applications
| Portable Instrumentation | Industrial Process Control |
|---|---|
Use Scenario: Handheld multimeter measuring mV-level thermocouple outputs with battery life >2 years. IC Role / Device Role / Timing Role: Precision ADC front-end converting differential sensor voltage to digital; performs single-shot conversions triggered by button press. Use Value: 16-bit resolution at 8 SPS and 4 µVP-P noise enable 0.1°C temperature resolution without external amplifiers or references. |
Use Scenario: 4–20 mA loop-powered pressure transmitter with HART modulation capability. IC Role / Device Role / Timing Role: Primary sensor digitizer interfacing to strain-gauge bridge; continuously converts at 16 SPS for real-time control feedback. Use Value: Ratiometric operation ensures accuracy remains stable across 2.7–5.5 V loop supply variation; self-calibration maintains INL ≤ ±0.0125% over –40°C to +85°C. |
| Smart Transmitters | Temperature Measurement Systems |
Use Scenario: Wireless gas sensor node transmitting calibrated CO₂ readings every 10 seconds via BLE. IC Role / Device Role / Timing Role: Low-power ADC acquiring filtered NDIR detector output; powers down between conversions to minimize average current. Use Value: 90 µA active current and 0.05 µA power-down current enable >5-year CR2032 battery life; PGA = 4 optimizes dynamic range for detector's 10–100 mV swing. |
Use Scenario: DIN-rail mounted RTD temperature controller with 0.01°C display resolution. IC Role / Device Role / Timing Role: High-linearity ADC digitizing 3-wire Pt100 bridge output; uses PGA = 2 to match sensor's 100–200 mV span at 1 mA excitation. Use Value: ±0.0125% FSR INL and <2 µV/°C offset drift ensure measurement accuracy meets Class A RTD tolerance requirements without software correction. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision delta-sigma ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS1115IRUGR | 4-channel, 16-bit, programmable comparator, 860 SPS max, QFN-10 package; higher speed but larger footprint and 150 µA active current. | Supports multiplexed multi-sensor acquisition; lacks ratiometric simplicity and ultra-low 90 µA draw of ADS1100A4IDBVR. | Choose ADS1115IRUGR when multiple analog inputs or alert functionality are required; ADS1100A4IDBVR preferred for minimal size/power single-channel use. |
| MCP3424-E/SL | 4-channel, 18-bit, PGA = 1/2/4/8, 15 SPS max, SOIC-14; higher resolution but slower, larger, and 145 µA active current. | Targets ultra-high-resolution DC measurements (e.g., weigh scales); incompatible I²C timing and pinout. | Choose MCP3424-E/SL only if 18-bit resolution is mandatory and board space/power budget allow; ADS1100A4IDBVR offers better SPS/mW ratio for 16-bit needs. |
Compared with ADS1115IRUGR and MCP3424-E/SL, the ADS1100A4IDBVR delivers the smallest footprint (SOT23-6), lowest active current (90 µA), and simplest ratiometric implementation - making it optimal for single-channel, battery-critical, space-constrained precision sensing where 16-bit resolution suffices.
Availability
ADS1100A4IDBVR is available at Aetrix Electronics and suitable for portable instrumentation, industrial process control, and smart transmitter designs requiring stable component supply, long-term manufacturability, and guaranteed traceability.
Supply support for ADS1100A4IDBVR 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-accuracy sensor interface applications - delivering complete analog front-end functionality in a 6-pin SOT23 package without external references or clocks.
FAQ
What is the I²C address of the ADS1100A4IDBVR?
The ADS1100A4IDBVR has a fixed 7-bit I²C slave address of 1001100b (0x4C), corresponding to the "AD4" variant in the ADS1100 family. This address is factory-programmed and cannot be changed. It is compatible with standard, fast, and high-speed I²C buses, and supports General Call Reset (0x00 + 0x06) for system-wide initialization.
How does the ADS1100A4IDBVR achieve ratiometric operation?
The ADS1100A4IDBVR uses its VDD supply voltage as the conversion reference, making full-scale range equal to ±VDD/PGA. This eliminates dependence on external reference stability and simplifies design - for example, at VDD = 3.3 V and PGA = 4, full-scale input is ±825 mV. The ratiometric architecture ensures measurement accuracy tracks supply variations, critical in battery-powered systems.
What is the maximum achievable resolution and under what conditions?
The ADS1100A4IDBVR achieves true 16-bit resolution with no missing codes at the 8 SPS data rate setting (DR = 11). At higher rates - 16 SPS (15-bit), 32 SPS (14-bit), and 128 SPS (12-bit) - resolution decreases as oversampling ratio drops. All resolutions maintain monotonicity and specified INL (±0.0125% FSR max at 16-bit mode).
Does the ADS1100A4IDBVR require an external clock source?
No, the ADS1100A4IDBVR contains a fully integrated system clock generator (~275 kHz nominal) that drives both the delta-sigma modulator and digital filter. External clocking is neither supported nor required. The internal clock's temperature and supply voltage drift are compensated by continuous self-calibration, ensuring consistent timing and conversion accuracy across operating conditions.
Can the ADS1100A4IDBVR measure negative differential input voltages?
Yes - the ADS1100A4IDBVR accepts bipolar differential inputs (VIN+ – VIN–) ranging from –VDD/PGA to +VDD/PGA. However, each input pin (VIN+, VIN–) must remain within GND – 0.2 V to VDD + 0.2 V. For example, with VDD = 5 V and PGA = 1, valid VIN+ and VIN– voltages are 0–5.2 V individually, but their difference can be –5 V to +5 V - enabling direct connection to Wheatstone bridges and thermocouples.
ADS1100A4IDBVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 128
- Number of Inputs:
- 1
- Input Type:
- Differential, Single Ended
- Data Interface:
- I2C
- Configuration:
- PGA-ADC
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- 1
- Architecture:
- Sigma-Delta
- Reference Type:
- Supply
- Voltage - Supply, Analog:
- 2.7V ~ 5.5V
- Voltage - Supply, Digital:
- 2.7V ~ 5.5V
- Features:
- PGA, Selectable Address
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- SOT-23-6
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS1100A4IDBVR FAQ
1.How can I place an order for ADS1100A4IDBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS1100A4IDBVR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ADS1100A4IDBVR reliable?
The price and inventory of ADS1100A4IDBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS1100A4IDBVR is usually 5 days.
3.What payment methods are accepted for ADS1100A4IDBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS1100A4IDBVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS1100A4IDBVR?
ADS1100A4IDBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS1100A4IDBVR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ADS1100A4IDBVR?
For technical support, including ADS1100A4IDBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS1100A4IDBVR requirements.
6.How does Aetrix verify that ADS1100A4IDBVR is sourced from the original manufacturer or authorized distributors?
All ADS1100A4IDBVR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ADS1100A4IDBVR meets industry standards.
7.What is the process for return or replacement of ADS1100A4IDBVR?
All ADS1100A4IDBVR units undergo pre-shipment inspection (PSI). If there is an issue with ADS1100A4IDBVR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ADS1100A4IDBVR part is unused and in its original packaging.
Return procedure for ADS1100A4IDBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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