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Texas Instruments ADS1110A7IDBVT
- Part No.:
- ADS1110A7IDBVT
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- SOT-23-6
- Datasheet:
-
ADS1110A7IDBVT.pdf
- Description:
- IC ADC 16BIT SIGMA-DELTA SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,112
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Product details
Overview
ADS1110A7IDBVT 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 programmable data rate, and 240 µA active current, enabling high-resolution voltage measurement in space-constrained portable instrumentation.
For engineers reviewing the ADS1110A7IDBVT datasheet, ADS1110A7IDBVT pinout, ADS1110A7IDBVT application, or ADS1110A7IDBVT equivalent, key selection considerations include its fixed I²C address (1001111), differential input range (±2.048V/PGA), self-calibrating architecture, and single-supply operation from 2.7V to 5.5V.
Technical Context
The ADS1110A7IDBVT implements a fully differential, continuously self-calibrating delta-sigma modulator with digital filtering, using an internal 2.048V reference that cannot be bypassed or replaced. Its onboard oscillator drives conversion timing-no external clock is supported.
It operates in continuous or single-conversion mode via I²C configuration register (default 0x8C), supports eight factory-set I²C addresses (this variant: 1001111), and provides PGA gains of 1/2/4/8 to resolve sub-millivolt signals with 16-bit resolution at 15 SPS or 12-bit at 240 SPS.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit at 15 SPS; no missing codes guaranteed across all data rates |
| Input Range | ±2.048V differentially (with PGA = 1); scales inversely with PGA gain |
| INL | ±0.01% of FSR max - ensures accurate end-point linearity for precision sensor interfacing |
| Data Rate | Programmable: 15/30/60/240 SPS - tradeoff between resolution and throughput |
| Reference Accuracy | 2.048V ±0.05% - enables absolute voltage measurement without external reference |
| Supply Current | 240 µA active, 0.05–2 µA power-down - suitable for battery-powered systems |
| I²C Address | 1001111 (0x4F) - fixed per variant; allows up to eight ADS1110s on one bus |
Pinout & Package
SOT23-6 package (DBV), 2.9 mm × 1.6 mm × 1.15 mm, surface-mount, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | Single 2.7V–5.5V supply; powers ADC core, reference, oscillator, and I²C interface |
| GND | Ground reference | Analog and digital ground common; requires low-impedance connection to minimize noise coupling |
| SCL | I²C clock input | Asynchronous master-driven clock; open-drain compatible; supports Standard/Fast/High-Speed modes |
| SDA | I²C bidirectional data | Open-drain I/O; requires external pull-up; transmits output code and receives config register writes |
| VIN+ | Differential analog input (+) | Non-inverting input; accepts GND − 0.2V to VDD + 0.2V; used with VIN− for true differential measurement |
| VIN− | Differential analog input (−) | Inverting input; same voltage range as VIN+; forms ±2.048V full-scale differential pair with VIN+ |
Key Features
| Feature | Design Value |
|---|---|
| Onboard 2.048V reference | ±0.05% initial accuracy and 5 ppm/°C drift - eliminates need for external reference and reduces BOM count |
| Programmable gain amplifier (PGA) | Gains of 1/2/4/8 - extends effective resolution for low-amplitude sensors (e.g., strain gauges, thermistors) |
| Continuous self-calibration | Automatic offset/gain correction during operation - removes need for manual calibration or system-level compensation |
| Single-cycle conversion | Completes conversion in one data-rate period - simplifies timing control and enables deterministic sampling intervals |
| Differential input architecture | Rejects common-mode noise up to 105 dB at DC (PGA=8) - improves immunity in noisy industrial environments |
Applications
| Portable Instrumentation | Industrial Process Control |
|---|---|
Use Scenario: Handheld multimeter measuring mV-level thermocouple outputs in field service. IC Role / Device Role / Timing Role: Precision ADC digitizing bipolar differential sensor signal with onboard reference and PGA gain scaling. Use Value: 16-bit resolution at 15 SPS captures microvolt-level changes; 240 µA supply current extends battery life beyond 100 hours. | Use Scenario: 4–20 mA loop-powered transmitter monitoring pressure sensor bridge output. IC Role / Device Role / Timing Role: High-accuracy A/D front-end converting ratiometric bridge voltage with common-mode rejection. Use Value: ±0.01% INL and 95 dB CMRR ensure <0.1% total error over temperature; SOT23-6 footprint fits tight PCB layouts. |
| Smart Transmitters | Temperature Measurement |
Use Scenario: Wireless sensor node transmitting calibrated analog sensor data via BLE MCU. IC Role / Device Role / Timing Role: Low-power, self-calibrating ADC interfacing to RTD or thermistor with I²C readout. Use Value: Single-conversion mode reduces average current to <1 µA between samples; fixed I²C address avoids bus conflicts in multi-node networks. | Use Scenario: Digital thermostat reading NTC thermistor voltage in HVAC control unit. IC Role / Device Role / Timing Role: Differential ADC rejecting EMI from nearby switching power supplies while resolving 0.1°C steps. Use Value: Onboard 2.048V reference eliminates drift-induced temperature offset; 5 ppm/°C reference drift contributes <0.05°C error over 0–70°C 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 |
|---|---|---|---|
| ADS1115IRUGT | 4-channel, programmable MUX, 16-bit, 860 SPS max, external reference option | Supports multiple sensors without external multiplexer; higher throughput but larger QFN-10 package | Select when expanding channel count or requiring flexible reference sourcing |
| MCP3421A0T-E/CH | 18-bit, 15 SPS, 2.048V reference (±0.05%), I²C, SOT23-6, but no PGA | Higher resolution at lowest data rate; lacks programmable gain, limiting small-signal usability | Select when ultimate DC precision is required and input signals exceed ±100 mV |
Compared with ADS1110A7IDBVT, ADS1115IRUGT adds channel flexibility at the cost of size and power, while MCP3421A0T-E/CH trades PGA capability for higher raw resolution-making ADS1110A7IDBVT optimal for compact, gain-adaptive, single-channel sensing.
Availability
ADS1110A7IDBVT is available at Aetrix Electronics and suitable for portable instrumentation, industrial process control, and smart transmitters requiring stable component supply and long-term manufacturability.
Supply support for ADS1110A7IDBVT 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 converters and sensor signal chains.
The ADS1110 product line was designed for ultra-compact, low-power, self-contained measurement systems where board space, power budget, and calibration simplicity are critical constraints.
FAQ
What is the I²C address of the ADS1110A7IDBVT?
The ADS1110A7IDBVT has a fixed 7-bit I²C address of 1001111 (0x4F), set at factory. This variant corresponds to the "A7" suffix and enables coexistence with up to seven other ADS1110 variants (A0–A6) on the same I²C bus without address conflict.
Does the ADS1110A7IDBVT support external voltage reference?
No, the ADS1110A7IDBVT uses an internal 2.048V reference exclusively. The reference is not accessible externally, cannot be bypassed, and is integral to the device's gain and offset specifications. All performance parameters-including INL, gain error, and drift-include the reference's contribution.
What is the maximum sample rate and corresponding resolution for ADS1110A7IDBVT?
The ADS1110A7IDBVT supports four programmable data rates: 15, 30, 60, and 240 SPS. At 240 SPS, resolution is 12 bits (no missing codes); at 15 SPS, it achieves full 16-bit resolution. Resolution decreases deterministically with increasing data rate due to digital filter settling time.
Can the ADS1110A7IDBVT measure single-ended signals?
No-the ADS1110A7IDBVT only supports fully differential input (VIN+ and VIN−). It does not provide a pseudo-differential or single-ended mode. To interface with single-ended sources, an external instrumentation amplifier or level-shifting circuit is required to generate a true differential pair within the ±2.048V/PGA input range.
How does the ADS1110A7IDBVT handle power-down and wake-up?
In single-conversion mode, the ADS1110A7IDBVT automatically powers down after completing a conversion, drawing only 0.05–2 µA. It wakes up upon writing '1' to the ST/DRDY bit in the configuration register. No external reset or enable pin is needed-the I²C interface fully controls power state transitions.
ADS1110A7IDBVT 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:
- -
ADS1110A7IDBVT FAQ
1.How can I place an order for ADS1110A7IDBVT through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS1110A7IDBVT 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 ADS1110A7IDBVT reliable?
The price and inventory of ADS1110A7IDBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS1110A7IDBVT is usually 5 days.
3.What payment methods are accepted for ADS1110A7IDBVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS1110A7IDBVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS1110A7IDBVT?
ADS1110A7IDBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS1110A7IDBVT 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 ADS1110A7IDBVT?
For technical support, including ADS1110A7IDBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS1110A7IDBVT requirements.
6.How does Aetrix verify that ADS1110A7IDBVT is sourced from the original manufacturer or authorized distributors?
All ADS1110A7IDBVT 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 ADS1110A7IDBVT meets industry standards.
7.What is the process for return or replacement of ADS1110A7IDBVT?
All ADS1110A7IDBVT units undergo pre-shipment inspection (PSI). If there is an issue with ADS1110A7IDBVT, 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 ADS1110A7IDBVT part is unused and in its original packaging.
Return procedure for ADS1110A7IDBVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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