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ADS1018IRUGR
Texas Instruments
IC ADC 12BIT SIGMA-DELTA 10X2QFN
3152 Pcs New Original In Stock
12 Bit Analog to Digital Converter 2, 4 Input 1 Sigma-Delta 10-X2QFN (2x1.5)
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5.0 / 5.0
- (479 Ratings)
ADS1018IRUGR
Product Overview
1256853
DiGi Electronics Part Number
ADS1018IRUGR-DGManufacturer
Texas Instruments
ADS1018IRUGR
Description
IC ADC 12BIT SIGMA-DELTA 10X2QFNInventory
3152 Pcs New Original In Stock
12 Bit Analog to Digital Converter 2, 4 Input 1 Sigma-Delta 10-X2QFN (2x1.5)
Quantity
Minimum 1
Minimum 1
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ADS1018IRUGR Technical Specifications
Category
Data Acquisition, Analog to Digital Converters (ADC)
Packaging
Cut Tape (CT) & Digi-Reel®
Series
-
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
Package / Case
10-XFQFN
Supplier Device Package
10-X2QFN (2x1.5)
Mounting Type
Surface Mount
Base Product Number
ADS1018
Datasheet & Documents
Manufacturer Product Page
ADS1018IRUGR Specifications
HTML Datasheet
ADS1018IRUGR-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
ADS1018IRUGR-DG
296-39848-2
-296-39848-1-DG
296-39848-1
296-39848-6
Standard Package
3,000
Alternative Parts
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MANUFACTURER
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Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
每次購買都能準時收到商品，這讓我非常信任這個品牌。
de desembre 02, 2025
Die schnelle Lieferung begeistert mich immer wieder. Die Verpackung ist zuverlässig und hochwertig.
de desembre 02, 2025
Shipping logistics were impeccable, ensuring quick and reliable delivery.
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Frequently Asked Questions (FAQ)
Can the ADS1018IRUGR replace an ADS1015 in a battery-powered sensor node without redesigning the power or signal conditioning circuitry?
Yes, the ADS1018IRUGR can directly replace the ADS1015 in most low-power sensor applications due to its identical 2V–5.5V analog and digital supply range, SPI interface, and pin-compatible 10-X2QFN package. However, note that the ADS1018 lacks the ADS1015’s comparator functionality, so if your design relies on alert pins or window detection, you’ll need to implement that logic externally via the microcontroller. Additionally, the ADS1018 has a slightly lower maximum sampling rate (3.3 kSPS vs. 3.3 kSPS nominal—effectively similar), but its integrated temperature sensor may eliminate the need for an external sensor, reducing BOM cost and board space in thermal monitoring scenarios.
What are the key risks when using the ADS1018IRUGR’s internal reference for precision voltage measurements in industrial environments with wide temperature swings?
The ADS1018IRUGR uses an internal voltage reference with ±0.3% initial accuracy and 20 ppm/°C drift, which may introduce measurable error in industrial applications spanning -40°C to 125°C—potentially up to ±1.5% total error over temperature. For high-accuracy applications (e.g., 4–20 mA loop monitoring or strain gauge readout), this drift can exceed acceptable tolerances. Mitigate this by either calibrating at multiple temperature points or replacing the internal reference with a precision external reference (e.g., REF5025) if the design allows. Also ensure minimal thermal gradients across the PCB, as self-heating from the PGA or digital activity can locally affect reference stability.
How does the ADS1018IRUGR compare to the ADS1115 when designing a low-noise, high-resolution data acquisition system for thermocouple measurements?
While both are 12-bit delta-sigma ADCs with PGA and I2C/SPI interfaces, the ADS1115 offers 16-bit resolution and lower noise (15.6 µV RMS vs. ~25 µV RMS on the ADS1018IRUGR), making it better suited for microvolt-level thermocouple signals without oversampling. The ADS1018IRUGR’s advantage lies in its smaller 10-X2QFN package and integrated temperature sensor, which can serve as a cold-junction reference—eliminating an external sensor. However, for high-accuracy thermocouple systems, the ADS1115’s superior noise performance typically justifies its larger footprint. If board space is critical and moderate accuracy suffices, the ADS1018IRUGR is a viable compact alternative with built-in cold-junction compensation capability.
Is it safe to operate the ADS1018IRUGR at 5.5V analog supply while the microcontroller’s SPI lines are at 3.3V, and what level-shifting considerations apply?
Yes, the ADS1018IRUGR supports mixed-voltage operation: its digital I/O pins (DIN, SCLK, CS, DOUT) are tolerant up to VDD + 0.3V, meaning they can accept 3.3V logic levels even when the ADC is powered at 5.5V. No level shifter is required for communication. However, ensure that the microcontroller’s input pins are 5V-tolerant if DOUT swings near 5.5V—most modern MCUs are not. To avoid damage, use a series resistor (e.g., 1 kΩ) on DOUT or confirm your MCU’s absolute maximum ratings. Also, maintain consistent ground planes to prevent ground bounce, especially during high-speed SPI transactions at 3.3 kSPS with short conversion times.
What layout and grounding practices are critical to avoid noise coupling when using the ADS1018IRUGR’s PGA in single-ended mode for low-level sensor signals?
When using the ADS1018IRUGR’s PGA in single-ended mode with sub-100 mV signals, treat the analog input path as a high-impedance, noise-sensitive node. Route analog traces away from digital lines (especially SCLK and DOUT), use a solid ground plane beneath the device, and connect the exposed thermal pad directly to analog ground. Avoid splitting the ground plane; instead, star-ground the analog and digital sections at the power supply. Place decoupling capacitors (100 nF ceramic + 1 µF tantalum) as close as possible to the AVDD and DVDD pins. Also, minimize input trace length and use guard rings if routing over long distances. These steps prevent digital switching noise from coupling into the PGA, which can degrade effective resolution below the nominal 12-bit performance.
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ADS1018IRUGR CAD Models
Texas Instruments ADS1018IRUGR PCB symbols & footprints
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