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Texas Instruments ADS1110A3IDBVT
- Part No.:
- ADS1110A3IDBVT
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- SOT-23-6
- Datasheet:
-
ADS1110A3IDBVT.pdf
- Description:
- IC ADC 16BIT SIGMA-DELTA SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,192
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Product details
Overview
ADS1110A3IDBVT from Texas Instruments is a 16-bit delta-sigma analog-to-digital converter with differential inputs, onboard 2.048V ±0.05% reference, programmable gain amplifier (PGA) up to 8×, and I²C interface. It delivers no missing codes, 0.01% FSR INL, and operates from 2.7V to 5.5V supply in portable instrumentation and smart transmitter systems.
For engineers reviewing the ADS1110A3IDBVT datasheet, ADS1110A3IDBVT pinout, ADS1110A3IDBVT application, or ADS1110A3IDBVT equivalent, key selection considerations include its SOT23-6 package, 15–240 SPS programmable data rate, self-calibrating architecture, and factory-set I²C address 1001011 (0x4B).
Technical Context
The ADS1110A3IDBVT implements a fully differential, continuously self-calibrating delta-sigma modulator with integrated digital filter, onboard 2.048V reference, and fixed-frequency internal oscillator (~275 kHz). Its conversion core uses binary two's complement output coding and supports four discrete data rates via DR[1:0] bits.
It operates exclusively as an I²C slave device with open-drain SDA/SCL, accepts only standard/fast/high-speed I²C modes (up to 3.4 MHz), and features a configuration register (default 0x8C) controlling single/continuous mode, PGA gain (1×–8×), and data rate - all without external clock or reference dependencies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit at 15 SPS; 12–16 bits selectable via data rate (no missing codes) |
| Input Range | ±2.048 V differential (with PGA = 1); scalable to ±256 mV full-scale at PGA = 8 |
| Data Rate | Programmable: 15 / 30 / 60 / 240 SPS - directly sets resolution and noise performance |
| INL | ±0.01% of FSR max - ensures high-accuracy measurement without post-calibration |
| Reference Accuracy | 2.048 V ±0.05% - enables stable absolute voltage measurement without external reference |
| Supply Current | 240 µA active, 0.05–2 µA power-down - optimized for battery-powered sensing nodes |
| I²C Address | Fixed 7-bit address 1001011 (0x4B) - allows coexistence with up to seven other ADS1110 variants on same bus |
Pinout & Package
SOT23-6 package (DBV), 2.9 mm × 1.6 mm × 1.15 mm, surface-mount, lead-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Positive power supply | Accepts 2.7–5.5 V; powers internal reference, modulator, and I²C interface |
| GND | Ground reference | Common return for analog and digital circuits; must be low-impedance |
| SCL | I²C clock input | Asynchronous master-driven clock; no clock stretching supported |
| SDA | I²C bidirectional data line | Open-drain; requires external pull-up; carries output register and config register data |
| VIN+ | Differential analog input (+) | Non-inverting input; valid range: GND − 0.2 V to VDD + 0.2 V |
| VIN− | Differential analog input (−) | Inverting input; valid range: GND − 0.2 V to VDD + 0.2 V; differential swing limited to ±2.048 V/PGA |
Key Features
| Feature | Design Value |
|---|---|
| Onboard 2.048V reference | ±0.05% initial accuracy and 5 ppm/°C drift - eliminates need for external precision reference |
| Programmable gain amplifier (PGA) | Configurable 1×/2×/4×/8× gain - enables high-resolution measurement of sub-256 mV signals |
| Continuous self-calibration | Automatic offset/gain correction during operation - removes need for user-initiated calibration |
| Single-cycle conversion | One-shot conversion completes in fixed time per data rate - simplifies timing control in microcontroller firmware |
| Low-power idle mode | Auto power-down after single conversion - reduces average current to <1 µA in polling-based systems |
Applications
| Portable Instrumentation | Smart Transmitters |
|---|---|
Use Scenario: Handheld multimeter measuring thermocouple or bridge sensor outputs in field service. IC Role / Device Role / Timing Role: Precision ADC capturing differential analog signals with onboard reference and PGA for signal scaling. Use Value: Eliminates external reference and op-amp signal conditioning, reducing BOM count and PCB area in space-constrained enclosures. |
Use Scenario: 4–20 mA loop-powered sensor node converting pressure or temperature to digital output. IC Role / Device Role / Timing Role: Low-power, self-calibrating ADC interfacing directly to sensor front-end and microcontroller over I²C. Use Value: 240 µA active current and auto power-down enable >5-year battery life in wireless transmitters. |
| Industrial Process Control | Temperature Measurement |
Use Scenario: DIN-rail mounted PLC analog input module acquiring multiple sensor channels. IC Role / Device Role / Timing Role: High-accuracy ADC with differential input rejecting common-mode noise in electrically noisy factory environments. Use Value: 95 dB CMRR at PGA = 8 and ±2.048 V input range ensure reliable readings despite ground shifts and EMI. |
Use Scenario: Digital thermostat using NTC thermistor with ratiometric or direct voltage readout. IC Role / Device Role / Timing Role: ADC providing 16-bit resolution at 15 SPS for stable temperature digitization with minimal oversampling. Use Value: Onboard reference and self-calibration maintain ±0.1°C accuracy across −40°C to +85°C operating range. |
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, external reference option, 860 µA active current | Supports multi-sensor monitoring without external multiplexer; larger 10-pin VSSOP package | Choose when expanding channel count beyond 1 differential pair or requiring flexible reference sourcing. |
| MCP3421A0T-E/CH | 18-bit, single-channel, 2.048V reference (±0.05%), 15–240 SPS, 145 µA active current, same SOT23-6 package | Higher resolution but no PGA; fixed 2.048V reference only; I²C address 0x68 (non-overlapping) | Choose when 18-bit resolution is critical and input signal amplitude is stable within ±2.048 V range. |
Compared with ADS1110A3IDBVT, ADS1115IDGSR adds channel flexibility at higher power and size cost, while MCP3421A0T-E/CH trades PGA programmability for 2 extra bits of resolution - both require layout changes due to different pinouts and footprints.
Availability
ADS1110A3IDBVT is available at Aetrix Electronics and suitable for portable instrumentation, smart transmitters, and industrial process control applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for ADS1110A3IDBVT 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 solutions.
The ADS1110 product line targets ultra-compact, low-power, self-contained ADC applications where board space, power budget, and system integration simplicity are critical - especially in battery-operated and distributed sensing systems.
FAQ
What is the I²C address of the ADS1110A3IDBVT?
The ADS1110A3IDBVT has a factory-programmed 7-bit I²C address of 1001011 (0x4B). This address is fixed and cannot be changed. It enables direct connection to an I²C bus alongside up to seven other ADS1110 variants (A0–A7), each with unique addresses, without address conflict.
Does the ADS1110A3IDBVT support external reference voltage?
No, the ADS1110A3IDBVT does not support external reference voltage. It integrates a dedicated 2.048 V ±0.05% reference that is hardwired to the ADC core. The reference cannot be bypassed, measured externally, or replaced - all conversions are inherently ratiometric to this internal source.
How does the PGA setting affect input voltage range in the ADS1110A3IDBVT?
In the ADS1110A3IDBVT, PGA gain directly scales the full-scale differential input range: at PGA = 1, range is ±2.048 V; at PGA = 2, ±1.024 V; at PGA = 4, ±512 mV; at PGA = 8, ±256 mV. Input common-mode voltage must remain between GND − 0.2 V and VDD + 0.2 V regardless of PGA setting.
Can the ADS1110A3IDBVT operate from a 3.3 V supply?
Yes, the ADS1110A3IDBVT operates over a supply range of 2.7 V to 5.5 V, fully supporting 3.3 V nominal systems. At 3.3 V, typical active current is ~240 µA, power dissipation drops to ~0.675 mW, and I²C logic levels remain compatible (VIH = 0.7 × VDD = 2.31 V min).
What is the meaning of the ST/DRDY bit in the ADS1110A3IDBVT configuration register?
In the ADS1110A3IDBVT, the ST/DRDY bit (bit 7) 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; 1 means the data has already been read or conversion is ongoing.
ADS1110A3IDBVT 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:
- -
ADS1110A3IDBVT FAQ
1.How can I place an order for ADS1110A3IDBVT through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS1110A3IDBVT 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 ADS1110A3IDBVT reliable?
The price and inventory of ADS1110A3IDBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS1110A3IDBVT is usually 5 days.
3.What payment methods are accepted for ADS1110A3IDBVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS1110A3IDBVT transactions.
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4.How is shipping managed for ADS1110A3IDBVT?
ADS1110A3IDBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS1110A3IDBVT 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 ADS1110A3IDBVT?
For technical support, including ADS1110A3IDBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS1110A3IDBVT requirements.
6.How does Aetrix verify that ADS1110A3IDBVT is sourced from the original manufacturer or authorized distributors?
All ADS1110A3IDBVT 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 ADS1110A3IDBVT meets industry standards.
7.What is the process for return or replacement of ADS1110A3IDBVT?
All ADS1110A3IDBVT units undergo pre-shipment inspection (PSI). If there is an issue with ADS1110A3IDBVT, 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 ADS1110A3IDBVT part is unused and in its original packaging.
Return procedure for ADS1110A3IDBVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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