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Texas Instruments ADS1018IRUGT
- Part No.:
- ADS1018IRUGT
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 10-XFQFN
- Datasheet:
-
ADS1018IRUGT.pdf
- Description:
- IC ADC 12BIT SIGMA-DELTA 10X2QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,146
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Product details
Overview
ADS1018IRUGT from Texas Instruments is a 12-bit, delta-sigma analog-to-digital converter with integrated PGA, internal voltage reference, temperature sensor (±2°C max error), oscillator, and SPI interface. It supports four single-ended or two differential inputs, operates from 2 V to 5.5 V, delivers up to 3300 SPS, and achieves noise-free 12-bit resolution in an ultrasmall 2 mm × 1.5 mm X2QFN-10 package for space-constrained sensor measurement systems.
For engineers reviewing the ADS1018IRUGT datasheet, ADS1018IRUGT pinout, ADS1018IRUGT application, or ADS1018IRUGT equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternative options, and supply-ready availability details - all grounded in TI's SBAS526D production data sheet.
Technical Context
The ADS1018IRUGT implements a delta-sigma (ΔΣ) ADC core with 250 kHz modulator frequency derived from an internal 1-MHz oscillator, enabling single-cycle settling and strong common-mode rejection. Its programmable gain amplifier (PGA) supports six full-scale ranges (±0.256 V to ±6.144 V), directly determining LSB size (0.125 mV to 3 mV) and input impedance (100 kΩ to 22 MΩ depending on range).
Conversion modes include continuous (128–3300 SPS) and single-shot (auto power-down after conversion), reducing idle current to 0.5–2 μA. The integrated temperature sensor provides 0.125 °C/LSB resolution and ±2 °C accuracy over –40°C to +125°C, usable for cold-junction compensation or system thermal monitoring without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit noise-free; guarantees no missing codes across full operating temperature range (–40°C to +125°C). |
| Data Rate | Programmable from 128 SPS to 3300 SPS; enables trade-off between speed and noise performance in sensor readout. |
| Supply Range | 2 V to 5.5 V; supports direct connection to common logic rails (e.g., 3.3 V or 5 V) without LDO overhead. |
| Current Consumption | 150 μA typical in continuous mode; drops to ≤2 μA in power-down - critical for battery-powered instrumentation. |
| Input Configuration | Four single-ended or two differential analog inputs via internal mux; eliminates need for external signal routing switches. |
| Integrated Functions | On-chip PGA, voltage reference, oscillator, and temperature sensor - reduces BOM count and PCB area by ~4 passive components. |
| Temperature Sensor Accuracy | ±2 °C max error over –40°C to +125°C; sufficient for thermocouple cold-junction compensation per IEC 60584. |
Pinout & Package
ADS1018IRUGT uses the RUG package: 10-pin X2QFN, 2.00 mm × 1.50 mm × 0.40 mm body, wettable flank terminals, exposed thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SCLK | Digital input | SPI serial clock; accepts 250 ns minimum period (4 MHz max), tolerant of 28 ms low pulses for interface reset. |
| 2 CS | Digital input | Active-low chip select; can be tied permanently low if SPI bus is dedicated - simplifies routing in point-to-point designs. |
| 3 GND | Supply return | Analog/digital ground common pin; requires low-inductance connection to PCB ground plane beneath thermal pad. |
| 4 AIN0 | Analog input | Single-ended or differential positive input; internally disconnected when unused - no external pull-up needed. |
| 5 AIN1 | Analog input | Single-ended or differential positive input; supports AIN1–AIN3 differential pair for thermocouple measurement. |
| 6 AIN2 | Analog input | Single-ended or differential positive input; usable with AIN3 as negative reference for ratiometric sensor interfaces. |
| 7 AIN3 | Analog input | Common negative input for differential pairs (AIN0–AIN3, AIN1–AIN3, AIN2–AIN3); also valid as single-ended input. |
| 8 VDD | Power supply | 2 V to 5.5 V analog/digital supply; requires 0.1 µF ceramic decoupling capacitor placed within 2 mm of pin. |
| 9 DOUT/DRDY | Digital output | Combined SPI data output and data-ready flag (active-low); eliminates need for separate DRDY GPIO in microcontroller systems. |
| 10 DIN | Digital input | SPI serial data input; 50 ns setup/hold timing relative to SCLK falling edge - compatible with standard MCU SPI peripherals. |
Key Features
| Feature | Design Value |
|---|---|
| Ultrasmall X2QFN-10 package | 2.0 mm × 1.5 mm footprint saves >60% board area vs. VSSOP-10; enables integration into wearables and compact IoT nodes. |
| Integrated temperature sensor | ±2 °C max error over full industrial range; eliminates external sensor and calibration in thermocouple cold-junction applications. |
| Programmable gain amplifier (PGA) | Six selectable FSRs (±0.256 V to ±6.144 V); allows direct digitization of mV-level thermocouple outputs and V-level industrial sensors. |
| Internal oscillator & reference | No external crystal or reference required; reduces component count, layout complexity, and startup time in embedded systems. |
| Single-cycle settling | Enables accurate sampling of fast transient signals without guard-band delays - critical for motor current sensing or vibration analysis. |
| Low-power single-shot mode | Auto power-down after conversion cuts average current to sub-μA levels in duty-cycled sensor polling architectures. |
Applications
| Thermocouple Measurement | Portable Gas Detector |
|---|---|
|
Use Scenario: Measuring K-type thermocouple output (≈41 μV/°C) while compensating for cold-junction temperature drift using the on-chip sensor. IC Role / Device Role / Timing Role: ADC front-end with integrated PGA (gain = 16), temperature sensor, and SPI interface - performs synchronized analog capture and thermal correction. Use Value: Eliminates external op-amp, reference, and temperature IC; achieves ±1.5°C total system accuracy without factory calibration. |
Use Scenario: Reading electrochemical gas sensor output (nA–μA current converted to mV via transimpedance amplifier) in battery-powered handheld units. IC Role / Device Role / Timing Role: Low-noise, low-power ADC with programmable gain and auto shutdown - samples sensor every 500 ms during standby. Use Value: Extends battery life to >12 months on two AA cells; 12-bit resolution resolves <1 ppm gas concentration changes. |
| Factory Automation IO Module | Smart Thermostat Sensor Node |
|
Use Scenario: Digitizing 4–20 mA loop signals and RTD bridges in DIN-rail mounted PLC analog input cards. IC Role / Device Role / Timing Role: Precision ADC with high common-mode rejection and wide supply range - handles industrial ground offsets and 24 V rail operation. Use Value: Supports 16-channel density in 25 mm width; internal reference stability (5 ppm/°C gain drift) meets IEC 61000-4-3 immunity requirements. |
Use Scenario: Monitoring ambient temperature and humidity sensor outputs (I²C HTS221 + analog thermistor) in HVAC control panels. IC Role / Device Role / Timing Role: Secondary ADC for analog backup sensing path - cross-validates digital sensor data and detects I²C bus failures. Use Value: Provides fail-safe temperature reading during communication outages; ±0.5 °C accuracy ensures ASHRAE 55 compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog-to-digital converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS1118IRUGT | 16-bit resolution, same 10-pin X2QFN package, identical pinout and SPI interface, but 860 SPS max rate and higher 350 μA operating current. | Better DC precision for slow-moving process variables (e.g., tank level), but insufficient for 3.3 kSPS vibration monitoring. | Select ADS1118IRUGT only when 16-bit resolution is mandatory and lower speed/power efficiency is acceptable. |
| ADS1015IDGSR | I²C interface (not SPI), VSSOP-10 package (3 mm × 3 mm), same 12-bit resolution and PGA, but lacks integrated temperature sensor. | Suitable for space-tolerant, low-pin-count MCU platforms with I²C peripherals - not viable where SPI is required or board area is constrained. | Choose ADS1015IDGSR only when I²C is preferred and external temperature sensing is already implemented elsewhere in the system. |
Compared with ADS1018IRUGT, ADS1118IRUGT trades speed and power for resolution, while ADS1015IDGSR sacrifices interface flexibility and thermal functionality for protocol compatibility - making ADS1018IRUGT the optimal balance for SPI-based, temperature-aware, medium-speed sensor acquisition.
Availability
ADS1018IRUGT is available at Aetrix Electronics and suitable for portable instrumentation, factory automation I/O modules, and smart thermostat sensor nodes requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for ADS1018IRUGT 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 interface solutions.
The ADS1018IRUGT belongs to TI's precision delta-sigma ADC product line, designed specifically for space- and power-constrained sensor measurement applications including thermocouple systems, portable diagnostics, and industrial process monitoring.
FAQ
What is the maximum sample rate supported by the ADS1018IRUGT?
The ADS1018IRUGT supports a maximum data rate of 3300 samples per second (SPS) in continuous-conversion mode. This rate is achieved with the shortest conversion time setting and is specified across the full operating temperature range (–40°C to +125°C). At lower data rates (e.g., 128 SPS), the device achieves improved noise performance and effective resolution.
Does the ADS1018IRUGT require an external voltage reference?
No, the ADS1018IRUGT integrates a low-drift internal voltage reference and does not support external reference connections. All gain and offset specifications - including ±0.25% gain error and 5 ppm/°C gain drift - include contributions from this internal reference, eliminating the need for external precision references and associated layout complexity.
Can the ADS1018IRUGT measure thermocouple signals directly?
Yes, the ADS1018IRUGT can directly digitize K-type thermocouple outputs (≈41 μV/°C) using its programmable gain amplifier set to ×16 and ±0.256 V full-scale range. Combined with its integrated temperature sensor for cold-junction compensation, the ADS1018IRUGT forms a complete, self-contained thermocouple measurement solution without external amplifiers or sensors.
What package type is used for the ADS1018IRUGT?
The ADS1018IRUGT uses the RUG package: a 10-pin X2QFN with 2.00 mm × 1.50 mm body size and 0.40 mm height. It features wettable flanks for automated optical inspection and an exposed thermal pad for enhanced heat dissipation - distinct from the larger VSSOP-10 (DGS) variant used in other ADS1018 part numbers.
How does the ADS1018IRUGT handle power management in battery-operated systems?
The ADS1018IRUGT supports single-shot mode, where it automatically enters ultra-low-power shutdown (≤2 μA) after completing each conversion. This enables precise control of active time - for example, waking once per second to sample a sensor - reducing average current to sub-microamp levels and extending battery life in portable instrumentation and wireless sensor nodes.
ADS1018IRUGT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-XFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 3.3k
- Number of Inputs:
- 2, 4
- Input Type:
- Differential, Single Ended
- Data Interface:
- SPI
- Configuration:
- MUX-PGA-ADC
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- 1
- Architecture:
- Sigma-Delta
- Reference Type:
- Internal
- Voltage - Supply, Analog:
- 2V ~ 5.5V
- Voltage - Supply, Digital:
- 2V ~ 5.5V
- Features:
- PGA, Temperature Sensor
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 10-X2QFN (2x1.5)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS1018IRUGT FAQ
1.How can I place an order for ADS1018IRUGT through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS1018IRUGT 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 ADS1018IRUGT reliable?
The price and inventory of ADS1018IRUGT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS1018IRUGT is usually 5 days.
3.What payment methods are accepted for ADS1018IRUGT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS1018IRUGT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS1018IRUGT?
ADS1018IRUGT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS1018IRUGT 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 ADS1018IRUGT?
For technical support, including ADS1018IRUGT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS1018IRUGT requirements.
6.How does Aetrix verify that ADS1018IRUGT is sourced from the original manufacturer or authorized distributors?
All ADS1018IRUGT 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 ADS1018IRUGT meets industry standards.
7.What is the process for return or replacement of ADS1018IRUGT?
All ADS1018IRUGT units undergo pre-shipment inspection (PSI). If there is an issue with ADS1018IRUGT, 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 ADS1018IRUGT part is unused and in its original packaging.
Return procedure for ADS1018IRUGT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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