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Texas Instruments ADS1110A1IDBVRG4
- Part No.:
- ADS1110A1IDBVRG4
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- SOT-23-6
- Datasheet:
-
ADS1110A1IDBVRG4.pdf
- Description:
- IC ADC 16BIT SIGMA-DELTA SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:4,486
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Product details
Overview
ADS1110A1IDBVRG4 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% INL, 15–240 SPS data rate, and 240 µA active current for precision low-power sensing. Used in portable instrumentation for high-resolution thermistor or bridge sensor digitization.
For engineers reviewing the ADS1110A1IDBVRG4 datasheet, ADS1110A1IDBVRG4 pinout, ADS1110A1IDBVRG4 application, or ADS1110A1IDBVRG4 equivalent, key selection criteria include its factory-set I²C address (1001001), −40°C to +85°C operating range, differential input architecture, self-calibrating operation, and PGA gain options (1/2/4/8) enabling sub-millivolt signal resolution without external amplification.
Technical Context
The ADS1110A1IDBVRG4 implements a fully differential, continuously self-calibrating delta-sigma ADC core with an onboard 2.048V reference and fixed-frequency oscillator - no external clock or reference required. Its switched-capacitor input stage presents differential impedance of 2.8 MΩ/PGA and supports true bipolar differential input (±2.048V/PGA).
I²C communication uses standard/fast/high-speed modes up to 3.4 MHz; the device operates as a slave only, with ST/DRDY bit indicating data readiness and SC bit selecting single vs. continuous conversion mode. Configuration register (default 0x8C) controls data rate (15/30/60/240 SPS), PGA gain, and conversion trigger.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit (at 15 SPS); no missing codes across all data rates - guarantees monotonicity and full-scale linearity for precision measurement. |
| Data Rate | Programmable: 15/30/60/240 SPS - selects trade-off between noise performance (lower rate = higher effective resolution) and update speed. |
| INL | ±0.01% of FSR max - ensures <±6.6 LSB error at 16-bit scale, critical for calibration-critical industrial transmitters. |
| Onboard Reference | 2.048V ±0.05%, 5 ppm/°C drift - eliminates external reference component count and layout sensitivity while maintaining system accuracy. |
| PGA Gain | 1/2/4/8 - enables direct digitization of mV-level signals (e.g., 256 µV LSB at gain=8, 15 SPS) without external op-amp stages. |
| Supply Current | 240 µA active, 0.05–2 µA power-down - supports battery-powered devices with multi-year runtime in wake-on-event architectures. |
| I²C Address | 1001001 (0x49) - factory-programmed for conflict-free multi-device bus deployment; eight variants available for up to eight ADS1110s on one bus. |
Pinout & Package
SOT23-6 package (DBV), 2.9 mm × 1.6 mm × 1.15 mm body, gull-wing leads, RoHS-compliant. Thermal pad not present; standard reflow profile applicable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Positive supply input | Accepts 2.7V–5.5V; powers internal reference, oscillator, and ADC core - bypass capacitor (0.1 µF) required for stable operation. |
| GND | Ground reference | Analog/digital common return; must be low-impedance and separated from noisy digital ground in mixed-signal layouts. |
| SCL | I²C clock input | Asynchronous master-generated clock; open-drain compatible; requires external pull-up resistor (typically 2.2–10 kΩ depending on bus speed). |
| SDA | I²C bidirectional data | Open-drain I/O; shares pull-up with SCL; supports Standard (100 kHz), Fast (400 kHz), and High-Speed (3.4 MHz) I²C modes. |
| VIN+ | Differential analog input (+) | Non-inverting input; accepts voltage from GND−0.2V to VDD+0.2V; forms differential pair with VIN− for ±2.048V/PGA full-scale range. |
| VIN− | Differential analog input (−) | Inverting input; same voltage range as VIN+; rejects common-mode noise up to 105 dB at DC with PGA=8. |
Key Features
| Feature | Design Value |
|---|---|
| Onboard 2.048V reference | Eliminates need for external precision reference IC or resistor divider, reducing BOM count and PCB area by ≥2 components. |
| Continuous self-calibration | Maintains offset and gain accuracy over temperature and time without host intervention - no calibration registers or firmware overhead required. |
| Single-cycle conversion | Completes full 16-bit conversion in one data-rate period (e.g., 66.7 ms at 15 SPS), enabling deterministic timing for control-loop sampling. |
| Differential input architecture | Rejects common-mode noise from shared sensor excitation or EMI-coupled traces - essential for bridge-based load cells and RTD interfaces. |
| Low quiescent current | 240 µA active current allows integration into energy-harvesting nodes or coin-cell-powered sensors with >5-year battery life at 1 SPS duty cycle. |
Applications
| Portable Instrumentation | Industrial Process Transmitters |
|---|---|
|
Use Scenario: Handheld multimeter measuring thermocouple or strain gauge outputs with battery life >100 hours. IC Role / Device Role / Timing Role: Primary ADC digitizing differential sensor output; provides 16-bit resolution at 15 SPS with onboard PGA gain=8 to resolve microvolt-level changes. Use Value: Eliminates external op-amp and reference, shrinking PCB size by 30% and reducing calibration complexity through continuous self-calibration. |
Use Scenario: 4–20 mA smart transmitter converting pressure sensor bridge output in hazardous-area field devices. IC Role / Device Role / Timing Role: Precision front-end ADC interfacing directly to ratiometric bridge; uses differential inputs and 105 dB CMRR to suppress loop-induced noise. Use Value: Achieves <0.1% total unadjusted error over −40°C to +85°C without factory trimming, meeting SIL-2 functional safety requirements for analog input modules. |
| Consumer Health Monitors | Factory Automation Sensors |
|
Use Scenario: Wearable blood oxygen (SpO₂) module digitizing photodiode current via transimpedance amplifier. IC Role / Device Role / Timing Role: Low-noise ADC capturing small AC-coupled signals; configured at 60 SPS with PGA=4 to maximize dynamic range for pulse detection. Use Value: Onboard oscillator and reference ensure consistent timing and scaling across production units - no batch-dependent calibration needed. |
Use Scenario: Predictive maintenance vibration sensor node monitoring motor bearing temperature and acceleration. IC Role / Device Role / Timing Role: Dual-role ADC acquiring both thermistor (slow, high-res) and accelerometer (fast, lower-res) signals via time-multiplexed configuration. Use Value: Single I²C address (0x49) and identical footprint across ADS1110 variants simplify firmware reuse and inventory management for multi-sensor platforms. |
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 |
|---|---|---|---|
| ADS1115IDGSR | 16-bit, 4-channel, programmable MUX, 860 SPS max, external reference option - larger QFN-10 package, higher current (300 µA). | Supports multi-sensor systems without external multiplexer; lacks onboard reference unless configured externally. | Choose ADS1115IDGSR when expanding beyond two analog inputs or requiring flexible reference sourcing; ADS1110A1IDBVRG4 remains optimal for minimal-footprint, single-differential-channel designs. |
| MCP3421A0T-E/CH | 18-bit, single-channel, I²C, 15/60/240/960 SPS, 2.048V reference (±0.05%), SOT23-6 - higher resolution but no PGA, fixed 2.048V reference range. | Better resolution for ultra-low-drift applications; no gain flexibility limits usability with sub-2.048V full-scale sensors. | Select MCP3421A0T-E/CH when absolute 18-bit linearity is mandatory and sensor output fits ±2.048V range; ADS1110A1IDBVRG4 preferred when PGA gain is needed to match sensor output span. |
Compared with ADS1115IDGSR and MCP3421A0T-E/CH, the ADS1110A1IDBVRG4 uniquely combines PGA, onboard reference, and SOT23-6 footprint in a single-chip solution - reducing system-level design effort for space-constrained, single-sensor measurement nodes where gain adaptability and reference stability are co-required.
Availability
ADS1110A1IDBVRG4 is available at Aetrix Electronics and suitable for portable instrumentation, industrial process transmitters, and consumer health monitors requiring stable component supply across long-lifecycle embedded programs.
Supply support for ADS1110A1IDBVRG4 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 and embedded processing technologies, with decades of expertise in precision data acquisition and low-power signal chain solutions.
The ADS1110 product line was designed for compact, self-contained measurement systems where board space, power budget, and calibration simplicity are critical - targeting portable test equipment, smart sensors, and battery-operated industrial nodes.
FAQ
What is the factory-programmed I²C address of the ADS1110A1IDBVRG4?
The ADS1110A1IDBVRG4 has a fixed I²C address of 1001001 (0x49), corresponding to the "A1" variant per TI's ordering nomenclature. This address is laser-trimmed during manufacturing and cannot be modified. It enables plug-and-play integration alongside up to seven other ADS1110 variants (A0–A7) on the same I²C bus without address conflicts.
Does the ADS1110A1IDBVRG4 require an external reference or clock source?
No - the ADS1110A1IDBVRG4 integrates both a 2.048V ±0.05% reference and a precision oscillator. These are fully internal and non-accessible externally; no pins expose reference voltage or clock output. The device operates autonomously from a single 2.7V–5.5V supply, eliminating external components typically needed for reference buffering or clock generation in discrete ADC designs.
How does the PGA in the ADS1110A1IDBVRG4 affect input voltage range and resolution?
The ADS1110A1IDBVRG4's PGA offers gains of 1, 2, 4, or 8. With a fixed 2.048V reference, full-scale differential input becomes ±2.048V/PGA - e.g., ±256 mV at gain=8. At 15 SPS, this yields a 16-bit LSB of 256 mV / 65536 ≈ 3.9 µV, enabling high-fidelity digitization of low-level sensor outputs without external amplification.
Can the ADS1110A1IDBVRG4 operate in single-conversion mode, and how is it triggered?
Yes - the ADS1110A1IDBVRG4 supports single-conversion mode via the SC bit (bit 4) in its configuration register. Setting SC=1 configures the device to wait until ST/DRDY (bit 7) is written to '1', then perform one conversion and auto-power-down. This reduces average current in event-driven systems, making ADS1110A1IDBVRG4 ideal for wake-on-sensor-read architectures.
What is the operating temperature range and junction limit for the ADS1110A1IDBVRG4?
The ADS1110A1IDBVRG4 is specified for −40°C to +85°C ambient operation (industrial grade), with absolute maximum junction temperature of +150°C. Its electrical characteristics - including INL, offset drift (1.2 µV/°C at PGA=1), and reference stability - are guaranteed across the full −40°C to +85°C range, ensuring reliable performance in uncontrolled environments like factory floors or outdoor instrumentation.
ADS1110A1IDBVRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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:
- -
ADS1110A1IDBVRG4 FAQ
1.How can I place an order for ADS1110A1IDBVRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS1110A1IDBVRG4 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 ADS1110A1IDBVRG4 reliable?
The price and inventory of ADS1110A1IDBVRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS1110A1IDBVRG4 is usually 5 days.
3.What payment methods are accepted for ADS1110A1IDBVRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS1110A1IDBVRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS1110A1IDBVRG4?
ADS1110A1IDBVRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS1110A1IDBVRG4 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 ADS1110A1IDBVRG4?
For technical support, including ADS1110A1IDBVRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS1110A1IDBVRG4 requirements.
6.How does Aetrix verify that ADS1110A1IDBVRG4 is sourced from the original manufacturer or authorized distributors?
All ADS1110A1IDBVRG4 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 ADS1110A1IDBVRG4 meets industry standards.
7.What is the process for return or replacement of ADS1110A1IDBVRG4?
All ADS1110A1IDBVRG4 units undergo pre-shipment inspection (PSI). If there is an issue with ADS1110A1IDBVRG4, 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 ADS1110A1IDBVRG4 part is unused and in its original packaging.
Return procedure for ADS1110A1IDBVRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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