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ADS1118IRUGR
Texas Instruments
IC ADC 16BIT SIGMA-DELTA 10X2QFN
9051 Pcs New Original In Stock
16 Bit Analog to Digital Converter 2, 4 Input 1 Sigma-Delta 10-X2QFN (2x1.5)
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ADS1118IRUGR
Product Overview
1235862
DiGi Electronics Part Number
ADS1118IRUGR-DGManufacturer
Texas Instruments
ADS1118IRUGR
Description
IC ADC 16BIT SIGMA-DELTA 10X2QFNInventory
9051 Pcs New Original In Stock
16 Bit Analog to Digital Converter 2, 4 Input 1 Sigma-Delta 10-X2QFN (2x1.5)
Quantity
Minimum 1
Minimum 1
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ADS1118IRUGR Technical Specifications
Category
Data Acquisition, Analog to Digital Converters (ADC)
Packaging
Cut Tape (CT) & Digi-Reel®
Series
-
Product Status
Active
Number of Bits
16
Sampling Rate (Per Second)
860
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
ADS1118
Datasheet & Documents
Manufacturer Product Page
ADS1118IRUGR Specifications
HTML Datasheet
ADS1118IRUGR-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
-ADS1118IRUGR-NDR
-296-34939-1-DG
296-34939-6
296-34939-1
296-34939-2
-296-34939-1
Standard Package
3,000
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
I appreciated how quickly they responded to my inquiries; the support was top-notch.
de desembre 02, 2025
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de desembre 02, 2025
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Frequently Asked Questions (FAQ)
When designing a low-power sensor node with the ADS1118IRUGR, what are the critical trade-offs between sampling rate and power consumption to ensure extended battery life?
For the ADS1118IRUGR in low-power sensor nodes, balancing the sampling rate (up to 860 SPS) with power consumption is crucial. Operating the ADS1118IRUGR at lower sampling rates significantly reduces active power draw. Consider utilizing the device's continuous conversion mode with a reduced sampling frequency or leveraging the internal temperature sensor and PGA for periodic measurements rather than continuous high-speed acquisition to maximize battery life. Analyze your application's dynamic range and signal frequency requirements; if high-speed changes are infrequent, reducing the sampling rate to the minimum necessary (e.g., 10-100 SPS) can provide substantial power savings while still capturing essential data. The power consumed by the ADS1118IRUGR is directly proportional to its operating time and sampling frequency, so optimizing these parameters is key.
What are the main risks and mitigation strategies when replacing a legacy 12-bit ADC with the 16-bit ADS1118IRUGR in an existing circuit, considering potential interface and accuracy challenges?
Replacing a 12-bit ADC with the 16-bit ADS1118IRUGR requires careful consideration of potential integration risks. While the ADS1118IRUGR offers higher resolution, its SPI interface needs to be correctly implemented with compatible clock speeds and data formatting. Ensure that the existing microcontroller's SPI peripheral can handle the ADS1118IRUGR's data output requirements. A primary risk is misinterpreting the higher resolution, potentially leading to incorrect signal scaling or calibration. Thoroughly review the ADS1118IRUGR's register map for configuration settings, especially the Programmable Gain Amplifier (PGA), to match the input voltage ranges of your previous ADC. Test the ADS1118IRUGR thoroughly in a prototype to verify accuracy and linearity across the entire input range and at different PGA settings before committing to a full design replacement.
For applications requiring simultaneous measurement of two analog signals with different dynamic ranges, how can the ADS1118IRUGR's input multiplexer and PGA be strategically configured to avoid saturation and maintain optimal accuracy?
To manage differing dynamic ranges with the ADS1118IRUGR's 2 or 4 single-ended/differential inputs, a strategic configuration of its input multiplexer and PGA is essential. For instance, if measuring a low-voltage, high-resolution signal alongside a higher-voltage, lower-resolution signal, assign the low-voltage signal to an input channel with a higher PGA gain (e.g., PGA=8 for ±256mV range) and the high-voltage signal to an input channel with a lower PGA gain (e.g., PGA=1 for ±6.144V range). The ADS1118IRUGR allows independent configuration of the MUX and PGA for each conversion cycle. This flexibility enables you to prioritize accuracy for the low-voltage signal while preventing saturation of the higher-voltage signal. Always verify that the selected PGA setting for each input channel does not exceed the input voltage limits specified by the ADS1118IRUGR's supply voltage and the selected PGA range to prevent damage or inaccurate readings.
What are the practical limitations of using the ADS1118IRUGR's internal temperature sensor for ambient temperature monitoring in an industrial environment where ambient temperatures can fluctuate widely?
While the ADS1118IRUGR includes an integrated temperature sensor, its practical limitations for precise industrial ambient temperature monitoring must be understood. The internal temperature sensor's accuracy is influenced by self-heating from the ADC's operation and its proximity to other components on the PCB. In industrial environments with wide temperature swings (-40°C to 125°C), the self-heating effect of the ADS1118IRUGR can introduce significant measurement errors, especially during periods of high activity or if the sensor is poorly thermally isolated. For critical temperature monitoring applications, it's advisable to use an external, calibrated temperature sensor placed strategically away from heat-generating components like the ADS1118IRUGR itself. If relying on the internal sensor, ensure thorough thermal characterization of your PCB layout and implement calibration routines at known temperature points to compensate for self-heating and environmental factors.
When migrating from a competitor's sigma-delta ADC, such as the AD7798, to the ADS1118IRUGR, what potential integration hurdles should be anticipated, particularly concerning SPI communication timing and reference voltage requirements?
Migrating from an AD7798 to the ADS1118IRUGR, both sigma-delta ADCs, presents specific integration challenges. While both use SPI communication, subtle differences in command structures, data word lengths, and clock polarity/phase (CPOL/CPHA) can cause issues. Carefully compare the SPI communication protocols and register configurations. The ADS1118IRUGR has an internal voltage reference, simplifying the design by removing an external component. However, ensure your system's analog supply voltage (2V to 5.5V) is stable and within the ADS1118IRUGR's operating range, as any fluctuations could impact the accuracy of the internal reference and thus the conversion results. Thoroughly test the SPI communication handshake and data integrity with the ADS1118IRUGR, paying close attention to the timing diagrams for both devices. It is also recommended to re-evaluate the PGA settings on the ADS1118IRUGR as they might differ from equivalent gain settings on the AD7798 to achieve the same full-scale input range.
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ADS1118IRUGR CAD Models
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