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ADS1226IRGVR
Texas Instruments
IC ADC 24BIT SIGMA-DELTA 16VQFN
19740 Pcs New Original In Stock
24 Bit Analog to Digital Converter 2 Input 1 Sigma-Delta 16-VQFN (4x4)
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ADS1226IRGVR
Product Overview
1238696
DiGi Electronics Part Number
ADS1226IRGVR-DGManufacturer
Texas Instruments
ADS1226IRGVR
Description
IC ADC 24BIT SIGMA-DELTA 16VQFNInventory
19740 Pcs New Original In Stock
24 Bit Analog to Digital Converter 2 Input 1 Sigma-Delta 16-VQFN (4x4)
CAD Models - PCB Symbols & Footprints
Quantity
Minimum 1
Minimum 1
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ADS1226IRGVR Technical Specifications
Category
Data Acquisition, Analog to Digital Converters (ADC)
Packaging
Tape & Reel (TR)
Series
-
Product Status
Active
Number of Bits
24
Sampling Rate (Per Second)
100
Number of Inputs
2
Input Type
Differential, Single Ended
Data Interface
SPI
Configuration
MUX-ADC
Ratio - S/H:ADC
-
Number of A/D Converters
1
Architecture
Sigma-Delta
Reference Type
External
Voltage - Supply, Analog
2.7V ~ 5.5V
Voltage - Supply, Digital
2.7V ~ 5.5V
Features
Temperature Sensor
Operating Temperature
-40°C ~ 105°C
Package / Case
16-VQFN Exposed Pad
Supplier Device Package
16-VQFN (4x4)
Mounting Type
Surface Mount
Base Product Number
ADS1226
Datasheet & Documents
Manufacturer Product Page
ADS1226IRGVR Specifications
HTML Datasheet
ADS1226IRGVR-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
2 (1 Year)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
TEXTISADS1226IRGVR
2156-ADS1226IRGVR
Standard Package
2,500
Alternative Parts
PART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
Their meticulous inventory management ensures consistent product availability for our bulk needs.
de desembre 02, 2025
Affordable prices and quick delivery make shopping here a no-brainer.
de desembre 02, 2025
The packaging was robust, safeguarding my items, and the delivery was incredibly fast.
de desembre 02, 2025
I was surprised at how quickly the items arrived, and their products continue to perform well after months of heavy usage.
de desembre 02, 2025
Their commitment to product quality is evident in every detail.
de desembre 02, 2025
The shipping was fast, and the packaging was prepared with care.
de desembre 02, 2025
DiGi Electronics' products enhance my daily life with their reliability.
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Frequently Asked Questions (FAQ)
What are the key design-in risks when integrating the ADS1226IRGVR in a noisy industrial environment with high common-mode interference?
When integrating the ADS1226IRGVR in noisy environments, a key risk is degradation of effective resolution due to external noise coupling into the high-impedance analog inputs. Despite the internal digital filter and sigma-delta architecture providing good noise rejection, designers must carefully manage PCB layout—keeping analog traces short, using guard rings, and maintaining solid ground planes. Additionally, ensure the external reference used is low-noise and well-bypassed, as the ADS1226IRGVR relies on an external reference for accuracy. For high common-mode interference scenarios, leverage the device's differential input mode with matched input RC filters to reject EMI while avoiding offset errors from resistor mismatches. Consider enabling the 50/60Hz rejection filter if measuring slow sensor signals like strain gauges or thermocouples.
How does the ADS1226IRGVR compare to the ADS1220UDBVR in terms of signal chain simplicity and system-level power trade-offs for battery-powered sensor nodes?
The ADS1226IRGVR offers higher integration than the ADS1220UDBVR by including an on-chip temperature sensor and better drift performance, which reduces the need for external components in precision sensor applications. However, the ADS1226IRGVR typically consumes more power in continuous conversion mode (~350 µA) compared to the ADS1220UDBVR (~180 µA), making it less ideal for ultra-low-power designs. For battery-powered systems, use the ADS1226IRGVR's duty-cycling capability with DRDY-driven wake-up to minimize average current. The shared SPI interface and 2.7V to 5.5V supply range allow direct compatibility with common microcontrollers, simplifying the signal chain. Choose the ADS1226IRGVR when precision and integration outweigh strict power budgets, especially in temperature-compensated remote sensing.
Can the ADS1226IRGVR replace the LTC2450LCMS8-1 in a single-ended 5V weigh scale design, and what changes are required in the analog front-end?
Yes, the ADS1226IRGVR can replace the LTC2450LCMS8-1 in single-ended 5V weigh scale applications, but several front-end adjustments are needed. The LTC2450 is a 16-bit ADC with internal reference and single-ended input, while the ADS1226IRGVR is 24-bit, supports both single-ended and differential inputs, and requires an external reference. To maintain accuracy, add a stable external reference (e.g., REF5025) for the ADS1226IRGVR and ensure the reference voltage is within its recommended range. Use the programmable gain amplifier (PGA) stage if the load cell output is small. Additionally, route signals carefully to avoid ground shifts in single-ended mode, and consider using the internal temperature sensor for drift compensation in temperature-varying environments. The higher resolution of the ADS1226IRGVR improves weigh scale sensitivity but increases susceptibility to ripple if power supply noise is not controlled.
What are the reliability concerns when operating the ADS1226IRGVR near the upper limit of its 105°C operating temperature range in an enclosed outdoor enclosure?
Operating the ADS1226IRGVR at or near 105°C in an enclosed outdoor system introduces reliability risks related to thermal drift and long-term parametric degradation. While the device is rated for -40°C to 105°C, performance specifications like offset drift, gain error, and reference current leakage can degrade near temperature extremes. To mitigate risks, ensure the PCB has adequate copper pour for heat dissipation and avoid placing the ADS1226IRGVR near high-power components. Use the built-in temperature sensor to monitor die temperature and implement software correction for offset drift. If ambient temperatures consistently exceed 85°C, derate system accuracy expectations and validate performance across the full range. The MSL-2 rating also requires controlled storage and assembly processes to prevent moisture-related failures during reflow, especially in humid climates.
What are the critical PCB layout and grounding practices needed to maintain 24-bit performance with the ADS1226IRGVR in mixed-signal designs?
To achieve true 24-bit performance with the ADS1226IRGVR, strict mixed-signal PCB layout practices are essential. Use a split analog-digital ground plane connected at a single point near the ADS1226IRGVR’s exposed thermal pad, which should be soldered directly to a low-impedance ground plane for optimal noise shielding. Keep digital traces (especially SPI lines) away from analog inputs to prevent coupling. Bypass the AVDD and DVDD pins with 10 µF and 0.1 µF capacitors placed as close as possible to the device. Route the external reference with short, shielded traces and isolate it from switching supplies. The 16-VQFN package's exposed pad must be properly grounded to reduce thermal resistance and EMI sensitivity. Lastly, avoid running high-speed digital signals beneath the ADS1226IRGVR package to prevent substrate noise injection that could otherwise limit effective resolution.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
ADS1226IRGVR CAD Models
Texas Instruments ADS1226IRGVR PCB symbols & footprints
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