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ADS1018QDGSRQ1
Texas Instruments
IC ADC 12BIT SIGMA-DELTA 10VSSOP
3754 Pcs New Original In Stock
12 Bit Analog to Digital Converter 2, 4 Input 1 Sigma-Delta 10-VSSOP
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5.0 / 5.0
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ADS1018QDGSRQ1
Product Overview
1373523
DiGi Electronics Part Number
ADS1018QDGSRQ1-DGManufacturer
Texas Instruments
ADS1018QDGSRQ1
Description
IC ADC 12BIT SIGMA-DELTA 10VSSOPInventory
3754 Pcs New Original In Stock
12 Bit Analog to Digital Converter 2, 4 Input 1 Sigma-Delta 10-VSSOP
Quantity
Minimum 1
Minimum 1
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ADS1018QDGSRQ1 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-TFSOP, 10-MSOP (0.118", 3.00mm Width)
Supplier Device Package
10-VSSOP
Mounting Type
Surface Mount
Grade
Automotive
Qualification
AEC-Q100
Base Product Number
ADS1018
Datasheet & Documents
Manufacturer Product Page
ADS1018QDGSRQ1 Specifications
HTML Datasheet
ADS1018QDGSRQ1-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
296-43279-2
296-43279-1
TEXTISADS1018QDGSRQ1
2156-ADS1018QDGSRQ1
-296-43279-1-DG
ADS1018QDGSRQ1-DG
296-43279-6
Standard Package
2,500
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
Je suis convaincu par la qualité constante des produits. Chaque achat est une garantie de fiabilité.
de desembre 02, 2025
Highly satisfied with the balance of cost and environmental care they provide.
de desembre 02, 2025
The reliability of their products coupled with excellent customer service is commendable.
de desembre 02, 2025
Their responsive after-sales team provides solutions quickly, minimizing my downtime.
de desembre 02, 2025
The after-sales response is quick, and support staff are always courteous and helpful.
de desembre 02, 2025
The logistics team did an outstanding job ensuring a prompt delivery, and the packaging was eco-friendly.
de desembre 02, 2025
Their prices are competitive, and their excellent after-sales response makes the overall experience even better.
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Frequently Asked Questions (FAQ)
Can the ADS1018QDGSRQ1 be safely used in a high-vibration automotive environment where temperature cycling between -40°C and 125°C is expected, and how does its AEC-Q100 qualification impact long-term reliability compared to industrial-grade alternatives like the ADS1018IDGSR?
Yes, the ADS1018QDGSRQ1 is specifically qualified to AEC-Q100 Grade 1 standards, meaning it has undergone rigorous stress testing for automotive environments, including thermal shock, mechanical vibration, and extended temperature operation. This makes it significantly more reliable than the industrial-grade ADS1018IDGSR under harsh conditions. For long-term reliability in high-vibration applications, ensure proper PCB mounting with adequate strain relief and conformal coating to mitigate solder joint fatigue. The internal reference and PGA also reduce dependency on external components, minimizing failure points in dynamic environments.
What are the key risks when replacing the ADS1018QDGSRQ1 with a lower-cost 12-bit sigma-delta ADC like the ADS1115 in a battery-powered automotive sensor node, especially regarding power, noise, and interface compatibility?
Replacing the ADS1018QDGSRQ1 with the ADS1115 introduces several design risks: while both use SPI and offer PGA and internal references, the ADS1115 has a higher quiescent current (150 µA vs. 140 µA) and slower effective throughput due to its 860 SPS max rate versus the ADS1018QDGSRQ1’s optimized 3.3 kSPS mode. More critically, the ADS1115 lacks AEC-Q100 qualification, making it unsuitable for safety-critical automotive systems. Additionally, the ADS1018QDGSRQ1’s integrated temperature sensor provides on-die thermal compensation that the ADS1115 does not, which can affect accuracy in wide-temperature applications. Only consider substitution in non-automotive or prototype use with careful validation of signal integrity and lifetime reliability.
How should I handle input overvoltage protection when using the ADS1018QDGSRQ1 in a 12V automotive system where load dump or transient spikes may exceed its 5.5V absolute maximum rating?
The ADS1018QDGSRQ1’s analog inputs must never exceed VDD + 0.3V or fall below GND – 0.3V. In a 12V automotive environment, use external clamping diodes (e.g., BAT54S) tied to the regulated 3.3V or 5V rail, followed by a series current-limiting resistor (1kΩ–10kΩ) and an RC low-pass filter. For enhanced robustness, add a TVS diode rated for ISO 7637-2 transients. Never rely solely on internal ESD structures. This protects the PGA and MUX inputs during load dump events (up to 40V), ensuring long-term reliability without degrading ADC performance.
Is it safe to operate the ADS1018QDGSRQ1 at its maximum sampling rate of 3.3 kSPS continuously in a high-EMI environment like an electric vehicle inverter control unit, and what layout practices minimize noise coupling through the SPI interface?
Operating the ADS1018QDGSRQ1 at 3.3 kSPS continuously is supported, but in high-EMI environments like EV inverters, digital noise from SPI lines can couple into analog inputs and degrade SNR. To mitigate this, route SPI traces (SCLK, DIN, DOUT, CS) away from analog signal paths, use ground planes beneath the device, and keep the digital supply (DVDD) decoupled with a 100nF ceramic capacitor placed within 2mm of the pin. Consider using a separate ground pour for analog sections and star-grounding at the ADC. Additionally, enabling the internal PGA’s higher gain settings can improve signal-to-noise ratio by amplifying small signals above noise floor, but avoid gains >4 if input bandwidth exceeds 100 Hz to prevent aliasing.
Can the internal temperature sensor in the ADS1018QDGSRQ1 be used for real-time thermal compensation of external strain gauge measurements in an automotive suspension monitoring system, and what are the accuracy limitations compared to a dedicated external sensor like the TMP117?
Yes, the ADS1018QDGSRQ1’s internal temperature sensor can provide die-temperature feedback for coarse thermal compensation of strain gauge readings, but it measures chip temperature—not the actual sensor or PCB temperature—introducing lag and spatial inaccuracy. Typical accuracy is ±2°C, which may be insufficient for precision applications. For critical suspension monitoring, pair the ADS1018QDGSRQ1 with a local external sensor like the AEC-Q100-qualified TMP117 (±0.1°C accuracy) mounted near the strain gauge. Use the internal sensor only for system-level thermal drift correction or as a backup. Always validate compensation algorithms under thermal cycling to avoid introducing bias errors from mismatched thermal time constants.
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ADS1018QDGSRQ1 CAD Models
Texas Instruments ADS1018QDGSRQ1 PCB symbols & footprints
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