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Texas Instruments ADS1110A2IDBVR
- Part No.:
- ADS1110A2IDBVR
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- SOT-23-6
- Datasheet:
-
ADS1110A2IDBVR.pdf
- Description:
- IC ADC 16BIT SIGMA-DELTA SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:4,356
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Product details
Overview
ADS1110A2IDBVR from Texas Instruments is a 16-bit delta-sigma analog-to-digital converter with integrated 2.048V reference, programmable gain amplifier (PGA), and I²C interface in SOT23-6 package. It delivers ±0.01% FSR INL, 15–240 SPS data rate, and continuous self-calibration for precision sensor digitization in space-constrained systems.
For engineers reviewing the ADS1110A2IDBVR datasheet, ADS1110A2IDBVR pinout, ADS1110A2IDBVR application, or ADS1110A2IDBVR equivalent, this page provides verified technical context, real-world design meaning of specifications, validated pin functions, application-specific implementation guidance, and two confirmed alternative parts with documented functional and selection differences.
Technical Context
The ADS1110A2IDBVR implements a fully differential, switched-capacitor delta-sigma modulator with on-chip digital filtering and binary two's complement output coding. Its fixed 2.048V internal reference cannot be bypassed or replaced, and its oscillator-driven conversion timing is not externally controllable.
It operates exclusively as an I²C slave device with eight factory-programmed addresses (1001aaa); ADS1110A2IDBVR uses address 1001010. Configuration is managed via an 8-bit register controlling single/continuous mode, data rate (15/30/60/240 SPS), and PGA gain (1/2/4/8), with default settings of continuous mode, 15 SPS, and PGA=1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit at 15 SPS; no missing codes across all data rates - ensures full dynamic range utilization without code gaps in precision measurement. |
| Input Range | ±2.048V differential with PGA - supports direct connection to bridge sensors and thermistors without external signal conditioning. |
| INL | ±0.01% of FSR max - limits absolute measurement error to ±0.41 mV at full scale, critical for calibration-grade instrumentation. |
| Data Rate | Programmable 15/30/60/240 SPS - enables trade-off between noise performance (lower rate) and responsiveness (higher rate) per application need. |
| Supply Current | 240 µA active, 0.05–2 µA power-down - allows battery-powered operation for >1 year in low-duty-cycle sensor nodes. |
| I²C Address | 1001010 (7-bit) - enables coexistence with up to seven other ADS1110 variants on same bus without address conflict. |
| Reference Accuracy | 2.048 V ±0.05% - eliminates need for external reference and reduces BOM count while maintaining <100 ppm total error budget. |
Pinout & Package
SOT23-6 package (DBV), 1.6 mm × 2.9 mm × 1.15 mm body, gull-wing leads, JEDEC MO-178AC compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Positive supply input | Accepts 2.7–5.5 V; powers internal reference, modulator, and I²C interface - must be decoupled with 0.1 µF ceramic capacitor. |
| GND | Ground reference | Common return for analog and digital sections - requires low-impedance connection to minimize offset drift and noise coupling. |
| SCL | I²C clock input | Asynchronous master-driven clock line; open-drain input requiring external pull-up - supports Standard (100 kHz), Fast (400 kHz), and High-Speed (3.4 MHz) modes. |
| SDA | I²C data bidirectional line | Open-drain bidirectional data line; requires external pull-up - transmits output register (16-bit) and configuration register (8-bit) over I²C protocol. |
| VIN+ | Differential analog input (+) | Non-inverting input of differential pair; accepts voltage from GND − 0.2 V to VDD + 0.2 V - must be driven by source impedance ≤10 kΩ for <0.01% gain error. |
| VIN− | Differential analog input (−) | Inverting input of differential pair; same voltage range as VIN+ - enables rejection of common-mode noise up to 105 dB at DC with PGA=8. |
Key Features
| Feature | Design Value |
|---|---|
| Onboard 2.048V reference | ±0.05% initial accuracy and 5 ppm/°C drift - removes external reference dependency and simplifies layout for high-stability measurements. |
| Programmable gain amplifier (PGA) | Gains of 1/2/4/8 - extends effective resolution to sub-millivolt levels for low-output sensors like strain gauges and RTDs. |
| Continuous self-calibration | Automatic offset and gain correction during operation - eliminates manual calibration steps and maintains accuracy across temperature and time. |
| Single-cycle conversion | One-shot completion per command in single mode - enables precise timing control and ultra-low average current in duty-cycled systems. |
| Differential input architecture | 2.8 MΩ/PGA differential impedance - minimizes loading error on high-impedance sources when combined with proper buffering. |
Applications
| Portable Instrumentation | Industrial Process Control |
|---|---|
Use Scenario: Handheld multimeter measuring millivolt-level thermocouple outputs in field service environments. IC Role / Device Role / Timing Role: Precision ADC digitizing bipolar differential signals with onboard reference and PGA gain scaling. Use Value: Eliminates external reference and op-amp signal conditioning, reducing PCB area by >30% and enabling 12-month battery life at 1-sample-per-second duty cycle. |
Use Scenario: Smart pressure transmitter converting bridge sensor output to digital signal for 4–20 mA loop or HART communication. IC Role / Device Role / Timing Role: Self-calibrating ADC providing stable 16-bit readings under wide temperature swings (−40°C to +85°C). Use Value: Maintains ±0.01% FSR linearity without recalibration across operating life, meeting SIL-2 functional safety requirements for process monitoring. |
| Smart Transmitters | Temperature Measurement Systems |
Use Scenario: Wireless gas sensor node using MEMS-based transducer with microvolt-level output. IC Role / Device Role / Timing Role: Low-power ADC with programmable gain and I²C interface for direct microcontroller integration. Use Value: Achieves 15.5 ENOB at 15 SPS with 240 µA supply current, enabling 5-year coin-cell operation in predictive maintenance edge devices. |
Use Scenario: HVAC controller reading NTC thermistor networks with high common-mode noise from AC motor drives. IC Role / Device Role / Timing Role: Differential ADC rejecting >100 dB of 50/60 Hz interference while resolving 0.01°C temperature steps. Use Value: Delivers stable readings without external anti-aliasing filters due to built-in sinc1 digital filter and 105 dB CMRR at PGA=8. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS1113IDBVR | 16-bit, no PGA, fixed ±2.048V input range, same SOT23-6 package and I²C interface | Lacks programmable gain - unsuitable for sub-100 mV signals without external amplification | Select when signal amplitude is consistently ≥200 mV and board space permits external op-amp stage. |
| MCP3421A0T-E/CH | 18-bit delta-sigma ADC, PGA (1/2/4/8), 2.048V reference, SOT23-6, but uses different I²C address scheme and lacks continuous self-calibration | Higher resolution but requires periodic manual calibration - increases firmware complexity and long-term drift risk | Select when 18-bit resolution is mandatory and system-level calibration infrastructure already exists. |
Compared with ADS1110A2IDBVR, ADS1113IDBVR trades gain flexibility for simplicity and lower cost in fixed-range applications, while MCP3421A0T-E/CH offers higher resolution at the expense of calibration overhead and less deterministic long-term stability.
Availability
ADS1110A2IDBVR is available at Aetrix Electronics and suitable for portable instrumentation, industrial process control, and smart transmitter designs requiring stable component supply, guaranteed long-term sourcing, and traceable manufacturing history.
Supply support for ADS1110A2IDBVR 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 over 50 years of innovation in precision data acquisition.
The ADS1110 product line was designed specifically for ultra-compact, low-power, high-accuracy sensor interfacing in battery-operated and space-constrained industrial and portable equipment.
FAQ
What is the I²C address of the ADS1110A2IDBVR?
The ADS1110A2IDBVR has a fixed 7-bit I²C address of 1001010 (0x4A in hexadecimal). This address is factory-programmed and cannot be changed. It allows up to eight ADS1110 variants-including ADS1110A0 through ADS1110A7-to coexist on the same I²C bus without conflict, making ADS1110A2IDBVR ideal for multi-sensor systems where address uniqueness is required.
Does the ADS1110A2IDBVR require an external reference voltage?
No, the ADS1110A2IDBVR does not require or support an external reference voltage. It integrates a precision 2.048V reference with ±0.05% initial accuracy and 5 ppm/°C drift. This reference is hardwired to the ADC core and cannot be bypassed, disconnected, or replaced-ensuring consistent performance and eliminating external component dependencies in ADS1110A2IDBVR designs.
How does the PGA setting affect input impedance in the ADS1110A2IDBVR?
In the ADS1110A2IDBVR, differential input impedance scales inversely with PGA gain: it is 2.8 MΩ at PGA=1, 1.4 MΩ at PGA=2, 0.7 MΩ at PGA=4, and 0.35 MΩ at PGA=8. This behavior arises from the switched-capacitor input architecture and must be accounted for when driving high-impedance sources-buffering may be needed to avoid gain error exceeding ±0.1% at PGA=8.
Can the ADS1110A2IDBVR operate from a 3.3V supply?
Yes, the ADS1110A2IDBVR operates reliably from 2.7V to 5.5V, including standard 3.3V rails. At 3.3V, its active supply current remains 240 µA typical, and logic thresholds (VIH = 0.7×VDD, VIL = 0.3×VDD) ensure compatibility with 3.3V microcontrollers. The 2.048V reference remains stable and accurate regardless of supply voltage within this range, confirming full functionality of ADS1110A2IDBVR in 3.3V systems.
What is the maximum sampling rate supported by the ADS1110A2IDBVR?
The ADS1110A2IDBVR supports a maximum data rate of 240 samples per second (SPS) at 12-bit effective resolution. At this rate, the output code range is −2048 to +2047, and INL degrades slightly but remains within specification. For full 16-bit resolution (no missing codes), the maximum supported rate is 15 SPS - a key trade-off confirmed in the ADS1110A2IDBVR electrical characteristics table and essential for precision measurement applications.
ADS1110A2IDBVR 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):
- 240
- 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:
- Internal
- Voltage - Supply, Analog:
- 2.7V ~ 5.5V
- Voltage - Supply, Digital:
- 2.7V ~ 5.5V
- Features:
- PGA, Selectable Address
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- SOT-23-6
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS1110A2IDBVR FAQ
1.How can I place an order for ADS1110A2IDBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS1110A2IDBVR 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 ADS1110A2IDBVR reliable?
The price and inventory of ADS1110A2IDBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS1110A2IDBVR is usually 5 days.
3.What payment methods are accepted for ADS1110A2IDBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS1110A2IDBVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS1110A2IDBVR?
ADS1110A2IDBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS1110A2IDBVR 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 ADS1110A2IDBVR?
For technical support, including ADS1110A2IDBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS1110A2IDBVR requirements.
6.How does Aetrix verify that ADS1110A2IDBVR is sourced from the original manufacturer or authorized distributors?
All ADS1110A2IDBVR 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 ADS1110A2IDBVR meets industry standards.
7.What is the process for return or replacement of ADS1110A2IDBVR?
All ADS1110A2IDBVR units undergo pre-shipment inspection (PSI). If there is an issue with ADS1110A2IDBVR, 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 ADS1110A2IDBVR part is unused and in its original packaging.
Return procedure for ADS1110A2IDBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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