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Texas Instruments ADS1110A4IDBVR
- Part No.:
- ADS1110A4IDBVR
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- SOT-23-6
- Datasheet:
-
ADS1110A4IDBVR.pdf
- Description:
- IC ADC 16BIT SIGMA-DELTA SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,455
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Product details
Overview
ADS1110A4IDBVR 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 ±2.048V differential input range, 15–240 SPS data rate, and continuous self-calibration for precision measurement in space-constrained systems such as portable sensor nodes and smart transmitters.
For engineers reviewing the ADS1110A4IDBVR datasheet, ADS1110A4IDBVR pinout, ADS1110A4IDBVR application, or ADS1110A4IDBVR equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, and two confirmed alternative parts for industrial sensing and battery-powered instrumentation.
Technical Context
The ADS1110A4IDBVR implements a fully differential delta-sigma modulator with digital filtering, onboard 2.048V reference (±0.05% initial accuracy, 5ppm/°C drift), and fixed-frequency oscillator - no external clock support. Its PGA offers selectable gains of 1, 2, 4, or 8 to resolve sub-millivolt signals without external amplification.
I²C communication uses a 7-bit slave address (1001100b for A4 variant), supports Standard/Fast/High-Speed modes up to 3.4MHz, and features automatic internal reset on power-up or General Call Reset (00h + 06h). Conversion modes include continuous or single-cycle, with auto-power-down after conversion in single mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit (at 15SPS), no missing codes - ensures full dynamic range utilization for high-fidelity sensor digitization. |
| Input Range | ±2.048V differential - matches onboard reference; enables direct connection to bridge sensors and thermistors without level-shifting. |
| Data Rate | 15/30/60/240 SPS - selectable via configuration register; trade-off between noise performance (lower rate = higher ENOB) and update speed. |
| PGA Gain | 1, 2, 4, or 8 - extends effective resolution to 19-bit-equivalent at gain=8 for microvolt-level signals (e.g., RTD or load cell outputs). |
| INL | ±0.01% of FSR max - guarantees monotonicity and linearity critical for closed-loop control and calibration-critical instrumentation. |
| Supply Current | 240µA active, 0.05µA power-down - enables multi-year battery life in wireless sensor endpoints operating in low-duty-cycle sampling. |
| Operating Temp | −40°C to +85°C - qualified for industrial environments including factory automation and process monitoring equipment. |
Pinout & Package
SOT23-6 package (DBV designation), 2.9mm × 1.6mm footprint, 1.45mm height, lead-free and RoHS-compliant. Thermal pad not present; standard reflow profile applies.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Positive supply input | Accepts 2.7V–5.5V; powers internal reference, modulator, and I²C interface - bypass capacitor required for transient current spikes. |
| GND | Ground reference | Analog and digital ground shared; must be low-impedance node to minimize offset drift and noise coupling into differential inputs. |
| VIN+ | Differential positive input | Non-inverting input of delta-sigma modulator; accepts voltage up to VDD + 0.2V but must remain ≥ GND − 0.2V. |
| VIN− | Differential negative input | Inverting input; forms differential pair with VIN+; common-mode voltage must stay within GND–0.2V to VDD+0.2V. |
| SCL | I²C clock input | Asynchronous master-driven clock; open-drain input requiring external pull-up; no clock stretching supported. |
| SDA | I²C data bidirectional | Open-drain bidirectional line; requires external pull-up; transmits output register (16-bit) and receives config register (8-bit). |
Key Features
| Feature | Design Value |
|---|---|
| Onboard 2.048V reference | Eliminates need for external precision reference; ±0.05% initial accuracy and 5ppm/°C drift reduce system-level calibration burden. |
| Programmable gain amplifier (PGA) | Four fixed gains (1/2/4/8) enable direct digitization of mV-range signals (e.g., strain gauges) without external op-amp stages. |
| Continuous self-calibration | Automatically corrects offset and gain errors in real time; no user intervention or external calibration components required. |
| Single-cycle conversion | Completes full 16-bit conversion in one data-rate period (e.g., 66.7ms at 15SPS); simplifies timing control in microcontroller firmware. |
| I²C interface with 8 addresses | 1001100b address for A4 variant allows up to eight identical devices on one bus - ideal for multi-channel sensor arrays. |
Applications
| Portable Instrumentation | Industrial Process Control |
|---|---|
Use Scenario: Handheld multimeter measuring thermocouple or RTD outputs with battery life >2 years. IC Role / Device Role / Timing Role: ADC front-end with integrated reference and PGA, performing 15SPS conversions synchronized to button press or timer interrupt. Use Value: Eliminates external reference and signal-conditioning op-amps, reducing BOM count by ≥3 components and PCB area by >30%. |
Use Scenario: 4–20mA loop-powered transmitter digitizing pressure sensor bridge output in hazardous-area enclosures. IC Role / Device Role / Timing Role: Precision differential ADC converting ratiometric bridge voltage with 16-bit resolution at 60SPS for real-time PID feedback. Use Value: Onboard self-calibration maintains accuracy across −40°C to +85°C ambient without field recalibration. |
| Smart Transmitters | Temperature Measurement |
Use Scenario: Wireless HART-compatible temperature transmitter using ultra-low-power MCU and LoRaWAN radio. IC Role / Device Role / Timing Role: Low-current ADC (240µA active) acquiring thermistor voltage during brief wake-up windows every 10 seconds. Use Value: Power-down mode draws only 0.05µA, extending coin-cell battery life beyond 5 years in intermittent-sampling applications. |
Use Scenario: Embedded HVAC controller reading NTC thermistor network across multiple zones. IC Role / Device Role / Timing Role: Differential ADC rejecting common-mode noise from shared power rails while resolving 0.1°C steps over −20°C to +70°C. Use Value: 95dB CMRR at PGA=8 suppresses EMI from nearby switching regulators and motor drives. |
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 |
|---|---|---|---|
| MCP3421A0T-E/CH | 18-bit resolution, 3.75SPS min, no onboard PGA, external reference required | Better resolution but slower; lacks integrated PGA and reference - needs ≥2 extra components | Select when absolute highest resolution is prioritized over size/power and external reference is already available. |
| ADS1115IRUGR | 16-bit, 4-channel, programmable MUX, same PGA/reference/I²C, QFN-10 package | Supports 4 single-ended or 2 differential inputs; larger footprint but eliminates multiplexer IC in multi-sensor designs | Select when expanding from single to multi-channel sensing without redesigning layout or adding external MUX. |
Compared with MCP3421A0T-E/CH and ADS1115IRUGR, the ADS1110A4IDBVR uniquely combines minimal footprint (SOT23-6), lowest active current (240µA), and full integration (reference + PGA + oscillator) - making it optimal for space- and power-constrained single-channel sensor nodes.
Availability
ADS1110A4IDBVR is available at Aetrix Electronics and suitable for portable instrumentation, industrial process control, and smart transmitters requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for ADS1110A4IDBVR 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 focused on 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 specifically for compact, battery-operated measurement systems needing high-resolution ADC functionality without external support components - targeting portable test equipment and distributed industrial sensors.
FAQ
What is the I²C address of ADS1110A4IDBVR?
The ADS1110A4IDBVR has a fixed 7-bit I²C slave address of 1001100b (0x4C in hexadecimal). This address is factory-programmed and cannot be changed. The 'A4' suffix explicitly denotes this address variant, enabling up to eight ADS1110 devices (A0–A7) on the same I²C bus without address conflict. ADS1110A4IDBVR responds only to this address during read/write operations.
Does ADS1110A4IDBVR support external reference voltage?
No, ADS1110A4IDBVR does not support external reference voltage. It contains an internal 2.048V reference that is permanently connected to the ADC core and cannot be disabled or replaced. The full-scale input range is fixed at ±2.048V differentially, and all gain and linearity specifications include the performance of this onboard reference. External reference connections are not electrically possible.
How does the PGA affect input impedance in ADS1110A4IDBVR?
In ADS1110A4IDBVR, differential input impedance is inversely proportional to PGA setting: 2.8MΩ at PGA=1, 1.4MΩ at PGA=2, 0.7MΩ at PGA=4, and 0.35MΩ at PGA=8. This behavior arises from the switched-capacitor input architecture. High-source-impedance sensors (e.g., pH electrodes) may require buffering at higher PGA settings to prevent measurement error due to voltage division.
Can ADS1110A4IDBVR operate from a 3.3V supply?
Yes, ADS1110A4IDBVR operates reliably from 2.7V to 5.5V, including standard 3.3V logic supplies. At 3.3V, typical supply current remains 240µA, and the 2.048V reference continues to function with specified accuracy and drift. Logic thresholds scale with VDD (VIH = 0.7×VDD), ensuring compatibility with 3.3V microcontrollers without level shifters.
What is the purpose of the ST/DRDY bit in ADS1110A4IDBVR's configuration register?
The ST/DRDY bit (bit 7) in ADS1110A4IDBVR serves dual roles: when written, it triggers a single conversion in single-conversion mode; when read, it indicates data freshness - '0' means the output register contains new, unread data, while '1' indicates the data has already been read. This flag eliminates polling delays and ensures firmware reads valid, up-to-date conversion results without race conditions.
ADS1110A4IDBVR 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:
- -
ADS1110A4IDBVR FAQ
1.How can I place an order for ADS1110A4IDBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS1110A4IDBVR 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 ADS1110A4IDBVR reliable?
The price and inventory of ADS1110A4IDBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS1110A4IDBVR is usually 5 days.
3.What payment methods are accepted for ADS1110A4IDBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS1110A4IDBVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS1110A4IDBVR?
ADS1110A4IDBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS1110A4IDBVR 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 ADS1110A4IDBVR?
For technical support, including ADS1110A4IDBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS1110A4IDBVR requirements.
6.How does Aetrix verify that ADS1110A4IDBVR is sourced from the original manufacturer or authorized distributors?
All ADS1110A4IDBVR 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 ADS1110A4IDBVR meets industry standards.
7.What is the process for return or replacement of ADS1110A4IDBVR?
All ADS1110A4IDBVR units undergo pre-shipment inspection (PSI). If there is an issue with ADS1110A4IDBVR, 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 ADS1110A4IDBVR part is unused and in its original packaging.
Return procedure for ADS1110A4IDBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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