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ADS8331IRGET
Texas Instruments
IC ADC 16BIT SAR 24VQFN
1589 Pcs New Original In Stock
16 Bit Analog to Digital Converter 4 Input 1 SAR 24-VQFN (4x4)
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5.0 / 5.0
- (305 Ratings)
ADS8331IRGET
Product Overview
1440377
DiGi Electronics Part Number
ADS8331IRGET-DGManufacturer
Texas Instruments
ADS8331IRGET
Description
IC ADC 16BIT SAR 24VQFNInventory
1589 Pcs New Original In Stock
16 Bit Analog to Digital Converter 4 Input 1 SAR 24-VQFN (4x4)
Quantity
Minimum 1
Minimum 1
Purchase and inquiry
Warranty & Returns
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ADS8331IRGET Technical Specifications
Category
Data Acquisition, Analog to Digital Converters (ADC)
Packaging
-
Series
-
Product Status
Active
Number of Bits
16
Sampling Rate (Per Second)
500k
Number of Inputs
4
Input Type
Pseudo-Differential, Single Ended
Data Interface
SPI
Configuration
MUX-S/H-ADC
Ratio - S/H:ADC
1:1
Number of A/D Converters
1
Architecture
SAR
Reference Type
External
Voltage - Supply, Analog
2.7V ~ 3.6V, 5V
Voltage - Supply, Digital
1.65V ~ 5.5V
Features
-
Operating Temperature
-40°C ~ 85°C
Package / Case
24-VFQFN Exposed Pad
Supplier Device Package
24-VQFN (4x4)
Mounting Type
Surface Mount
Base Product Number
ADS8331
Datasheet & Documents
Manufacturer Product Page
ADS8331IRGET Specifications
HTML Datasheet
ADS8331IRGET-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
-ADS8331IRGET-NDR
TEXTISADS8331IRGET
296-25862-1
296-25862-2
2156-ADS8331IRGET
296-25862-6
-296-25862-1-DG
Standard Package
250
Alternative Parts
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MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
이 회사는 제품의 품질뿐만 아니라 배송 시간도 정확해서 신뢰할 수 있습니다.
de desembre 02, 2025
Der schnelle Versand hat mich sehr beeindruckt, meine Bestellung kam viel früher als erwartet.
de desembre 02, 2025
I was able to complete my shopping without any confusing steps.
de desembre 02, 2025
DiGi Electronics’ products are worth every penny for their quality and performance.
de desembre 02, 2025
Their affordable pricing does not compromise on the quality of post-purchase support.
de desembre 02, 2025
Reliable and swift delivery with supportive customer service.
de desembre 02, 2025
Even after extensive use, their products continue to perform reliably, demonstrating excellent build quality.
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Frequently Asked Questions (FAQ)
What are the key design-in risks when using the ADS8331IRGET in a mixed-signal PCB layout with high-speed digital components?
When integrating the ADS8331IRGET into a mixed-signal design, a major risk is noise coupling from nearby digital traces or switching power supplies into the analog inputs or reference lines. Since the ADC uses an external reference and operates up to 500kSPS, it’s sensitive to ground bounce and supply ripple. To mitigate this, isolate analog and digital ground planes with a single-point star ground, place the ADS8331IRGET in a dedicated analog region, use guard rings around high-impedance input nodes, and ensure short, matched trace lengths for the SPI interface. Also, decouple both the analog (2.7V–3.6V) and digital (1.65V–5.5V) supplies with 100nF ceramic and 10μF bulk capacitors close to the device pins to maintain signal integrity and effective SNR performance.
Can the ADS8331IRGET replace the ADS8331IBRGET directly in an existing design, and are there any hidden compatibility issues?
Yes, the ADS8331IRGET can directly replace the ADS8331IBRGET since both are functionally identical variants from Texas Instruments, differing only in package tape-and-reel specifications and possibly MSL grading. However, verify that the PCB footprint matches the 24-VQFN (4x4) package exactly, and confirm that the reflow profile accounts for the exposed thermal pad to avoid voiding or poor thermal performance. Also double-check that the external reference voltage source can drive the input capacitance of the ADS8331IRGET’s sampling phase, especially if the original design operated near reference drive limits. No electrical performance differences are expected between the two part numbers.
How does the pseudo-differential input structure of the ADS8331IRGET impact single-ended sensor interfacing in noisy industrial environments?
The ADS8331IRGET's pseudo-differential input rejects common-mode noise only on the IN+ and IN– pairs within each of the four input channels, but the IN– pin is referenced to a fixed COM voltage (typically mid-supply), not the signal ground. This limits noise rejection when interfacing single-ended sensors in electrically noisy settings, as ground shifts or EMI can create common-mode errors. To improve robustness, buffer the sensor signal with a low-noise operational amplifier (e.g., OPA333) configured for level-shifting to match the COM voltage, and use twisted-pair wiring with shielding tied to system ground at one end. Avoid long traces between sensor and ADC, and consider adding RC filtering (e.g., 10Ω + 10nF) at each input to reduce RF rectification and aliasing.
What are the reliability concerns with the ADS8331IRGET when operating at the edge of its temperature range in an outdoor metering application?
Operating the ADS8331IRGET at the extremes of its -40°C to 85°C range, especially in outdoor environments with thermal cycling, can impact long-term reliability due to mechanical stress on solder joints and increased leakage currents. While the device meets specs across the range, system-level accuracy may degrade due to drift in external components like references (e.g., REF5025) or PCB material effects. To ensure reliability, use no-clean solder paste rated for industrial temps, validate the thermal pad solder joint quality via X-ray inspection during manufacturing, and avoid placing the ADC near high-power dissipation components. Additionally, perform extended burn-in testing under thermal cycling to detect early-life failures and ensure moisture sensitivity level (MSL-2) handling protocols were followed during assembly.
Why might the ADS8331IRGET be preferred over comparable 16-bit ADCs like the LTC2311-16 in portable data acquisition systems?
The ADS8331IRGET is often preferred over the LTC2311-16 in portable systems due to its lower typical power consumption (2.8mW at 3V, 500kSPS) and wider digital supply range (1.65V–5.5V), enabling direct interface with 1.8V, 3.3V, or 5V microcontrollers without level shifters. In contrast, the LTC2311-16 requires tighter supply control and has higher quiescent current, reducing battery life. Additionally, the ADS8331IRGET’s 4-channel multiplexed architecture allows compact signal chain designs, while the LTC2311-16 is single-channel. However, designers must account for the external reference requirement in both parts—ensure the reference (e.g., REF5025) has low noise and sufficient drive capability to settle the input capacitance within the ADS8331IRGET’s acquisition window to avoid linearity errors across channels.
Quality Assurance (QC)
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ADS8331IRGET CAD Models
Texas Instruments ADS8331IRGET PCB symbols & footprints
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