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Texas Instruments ADS1100A4IDBVT
- Part No.:
- ADS1100A4IDBVT
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- SOT-23-6
- Datasheet:
-
ADS1100A4IDBVT.pdf
- Description:
- IC ADC 16BIT SIGMA-DELTA SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:564
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Product details
Overview
ADS1100A4IDBVT 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 a SOT23-6 package. It operates ratiometrically using the supply voltage as reference and draws only 90 µA in active mode. It is used in precision sensor signal conditioning for smart transmitters and portable instrumentation.
For engineers reviewing the ADS1100A4IDBVT datasheet, ADS1100A4IDBVT pinout, ADS1100A4IDBVT application, or ADS1100A4IDBVT equivalent, key selection factors include its guaranteed 16-bit no-missing-codes performance at 8 SPS, ±0.0125% FSR INL, 4 µVP-P noise, continuous self-calibration, and factory-programmed I²C address 1001100 (0x4C).
Technical Context
The ADS1100A4IDBVT implements a fully differential delta-sigma modulator with integrated digital filter and internal system clock (~275 kHz nominal). Its ratiometric conversion uses VDD as reference, eliminating external reference components. The PGA supports gains of 1, 2, 4, or 8 to resolve sub-millivolt signals without external amplification.
It operates exclusively as an I²C slave device with fixed 7-bit address 1001100 (0x4C), supporting Standard (100 kHz), Fast (400 kHz), and High-Speed (3.4 MHz) modes. Conversion is initiated via I²C register write to ST/BSY bit; single-conversion mode enables automatic power-down after each result, reducing idle current to 0.05 µA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16 bits with no missing codes at 8 SPS - guarantees monotonicity and full code coverage for high-accuracy measurement systems. |
| INL | ±0.0125% of FSR max - ensures linearity error remains below ±5 LSB over full-scale range at PGA = 1. |
| Data Rate | 8 / 16 / 32 / 128 SPS - selectable via configuration register; 8 SPS enables lowest noise (4 µVP-P) and highest resolution. |
| PGA Gain | 1, 2, 4, or 8 - extends effective input range down to ±VDD/8, enabling direct digitization of mV-level bridge or thermistor outputs. |
| Supply Current | 90 µA active, 0.05 µA power-down - allows battery operation in portable instruments with multi-year runtime. |
| I²C Address | Fixed 7-bit address 1001100 (0x4C) - eliminates address conflict when multiple ADS1100 variants share same bus. |
| Input Impedance | Differential: 2.4 MΩ/PGA; Common-mode: 8 MΩ - requires low-impedance source or buffering for high-accuracy measurements. |
Pinout & Package
SOT23-6 package with exposed pad (DBV designation); 1.6 mm × 2.9 mm footprint; rated for –40°C to +85°C operating temperature.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (AD0) | I²C address select marker | Top-marking identifier "AD4" confirms factory-set I²C address 1001100 (0x4C); not electrically connected. |
| 2 (VIN+) | Differential analog input (+) | Non-inverting input of PGA; accepts voltage from GND – 0.2 V to VDD + 0.2 V. |
| 3 (GND) | Analog/digital ground reference | Single ground connection for both analog and digital sections; must be low-impedance. |
| 4 (VIN–) | Differential analog input (–) | Inverting input of PGA; common-mode voltage must stay within GND – 0.2 V to VDD + 0.2 V. |
| 5 (VDD) | Power supply input | 2.7 V to 5.5 V single supply; also serves as ratiometric reference for A/D conversion. |
| 6 (SCL) | I²C clock input | Asynchronous master-generated clock; ADS1100 acts only as slave and never drives SCL. |
| 7 (SDA) | I²C bidirectional data line | Open-drain I/O; requires external pull-up; carries output register (16-bit), config register (8-bit), and ACK/NACK. |
Key Features
| Feature | Design Value |
|---|---|
| Continuous self-calibration | Automatically corrects offset and gain errors in real time; no user intervention or external calibration required. |
| Programmable data rate | Selectable 8/16/32/128 SPS via DR[1:0] bits - trade off resolution/noise vs. throughput without hardware change. |
| Ratiometric operation | Uses VDD as reference - eliminates need for precision external voltage reference and reduces BOM cost. |
| Low-noise PGA | 4 µVP-P noise at 8 SPS with PGA = 8 - resolves <10 µV signals in industrial sensor interfaces. |
| Single-cycle conversion | Completes full 16-bit conversion in one data rate period - enables deterministic timing for control-loop sampling. |
Applications
| Portable Instrumentation | Industrial Process Control |
|---|---|
Use Scenario: Handheld multimeter or environmental logger measuring thermistor, RTD, or strain gauge outputs. IC Role / Device Role / Timing Role: Precision front-end ADC capturing low-level differential sensor signals with minimal external components. Use Value: 16-bit resolution and 4 µVP-P noise enable 0.1°C temperature resolution and sub-0.05% strain accuracy without external amplifiers. | Use Scenario: 4–20 mA smart transmitter with HART interface digitizing pressure or flow sensor bridges. IC Role / Device Role / Timing Role: Primary A/D converter providing calibrated digital output to microcontroller for digital compensation and communication. Use Value: Continuous self-calibration maintains accuracy over temperature (-40°C to +85°C) and time, meeting long-term stability requirements of process transmitters. |
| Smart Transmitters | Temperature Measurement Systems |
Use Scenario: Loop-powered field device converting millivolt-level bridge output into digital value for HART or wireless transmission. IC Role / Device Role / Timing Role: Low-power, ratiometric ADC interfacing directly to Wheatstone bridge with PGA gain scaling. Use Value: 90 µA active current and automatic power-down support energy harvesting or battery-only operation in remote sensors. | Use Scenario: Digital thermostat or HVAC controller reading NTC thermistors with high linearity across -20°C to +70°C range. IC Role / Device Role / Timing Role: Differential ADC rejecting common-mode noise from long sensor leads in noisy industrial environments. Use Value: 94 dB CMRR at PGA = 8 suppresses EMI-induced errors on unshielded wiring, improving reliability in factory automation. |
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 |
|---|---|---|---|
| ADS1115IRUGT | 4-channel, 16-bit, programmable comparator, 860 SPS max, QFN-10 package | Supports multiplexed multi-sensor inputs; higher speed but larger footprint and no self-calibration | Choose ADS1115IRUGT when monitoring >1 sensor channel or requiring alert functionality; ADS1100A4IDBVT preferred for ultra-low-power single-channel space-constrained designs. |
| MCP3421A0T-E/CH | 18-bit, 3.75 SPS, PGA = 1/2/4/8, SOT23-6, I²C, no self-calibration | Higher resolution but slower; requires external calibration for offset/gain drift compensation | Choose MCP3421A0T-E/CH when absolute 18-bit accuracy is mandatory and system can accommodate manual calibration; ADS1100A4IDBVT offers lower noise and guaranteed linearity without calibration overhead. |
Compared with ADS1115IRUGT and MCP3421A0T-E/CH, the ADS1100A4IDBVT delivers best-in-class power efficiency (90 µA), smallest footprint (SOT23-6), and autonomous calibration-making it optimal for battery-powered, single-sensor, space-limited applications where long-term stability is critical.
Availability
ADS1100A4IDBVT is available at Aetrix Electronics and suitable for portable instrumentation, industrial process control, and smart transmitters requiring stable component supply and long-term lifecycle continuity.
Supply support for ADS1100A4IDBVT 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 company specializing in analog and embedded processing technologies, with leadership in precision data converters and low-power signal chain solutions.
The ADS1100 product line was designed for ultra-compact, low-power, high-resolution sensor digitization in space- and energy-constrained applications such as handheld test equipment and loop-powered transmitters.
FAQ
What is the I²C address of the ADS1100A4IDBVT?
The ADS1100A4IDBVT has a fixed 7-bit I²C slave address of 1001100 (0x4C), determined by its factory-programmed AD4 marking. This address is unique among the eight ADS1100 variants and avoids bus conflicts when multiple units operate on the same I²C bus. No external address pins or jumpers are required.
Does the ADS1100A4IDBVT require an external voltage reference?
No, the ADS1100A4IDBVT performs ratiometric conversion using VDD as its reference voltage. This eliminates the need for an external precision reference, simplifying design and reducing BOM cost. Full-scale range equals ±VDD/PGA, so accuracy depends directly on supply rail stability and noise.
How does the self-calibration function in the ADS1100A4IDBVT work?
The ADS1100A4IDBVT incorporates continuous, automatic self-calibration that corrects offset and gain errors in real time without user intervention. Calibration occurs internally during normal operation and cannot be disabled. All published INL, offset, and gain error specifications include the effect of this built-in calibration.
What is the maximum achievable resolution and noise performance of the ADS1100A4IDBVT?
At 8 SPS data rate and PGA = 8, the ADS1100A4IDBVT achieves true 16-bit resolution with no missing codes and 4 µVP-P noise. This corresponds to ~1 µV RMS noise and enables reliable digitization of sub-millivolt differential signals, such as those from low-output load cells or thermopiles.
Can the ADS1100A4IDBVT operate from a 3.3 V supply?
Yes, the ADS1100A4IDBVT operates over a supply range of 2.7 V to 5.5 V, including standard 3.3 V rails. At 3.3 V, its active supply current is ~90 µA and power dissipation drops to ~210 µW. Full electrical specifications-including INL, noise, and input impedance-are guaranteed across this entire voltage range.
ADS1100A4IDBVT 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:
- -
ADS1100A4IDBVT FAQ
1.How can I place an order for ADS1100A4IDBVT through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS1100A4IDBVT 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 ADS1100A4IDBVT reliable?
The price and inventory of ADS1100A4IDBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS1100A4IDBVT is usually 5 days.
3.What payment methods are accepted for ADS1100A4IDBVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS1100A4IDBVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS1100A4IDBVT?
ADS1100A4IDBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS1100A4IDBVT 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 ADS1100A4IDBVT?
For technical support, including ADS1100A4IDBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS1100A4IDBVT requirements.
6.How does Aetrix verify that ADS1100A4IDBVT is sourced from the original manufacturer or authorized distributors?
All ADS1100A4IDBVT 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 ADS1100A4IDBVT meets industry standards.
7.What is the process for return or replacement of ADS1100A4IDBVT?
All ADS1100A4IDBVT units undergo pre-shipment inspection (PSI). If there is an issue with ADS1100A4IDBVT, 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 ADS1100A4IDBVT part is unused and in its original packaging.
Return procedure for ADS1100A4IDBVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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