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ADS7951SBDBT
Texas Instruments
IC ADC 12BIT SAR 30TSSOP
1190 Pcs New Original In Stock
12 Bit Analog to Digital Converter 8 Input 1 SAR 30-TSSOP
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5.0 / 5.0
- (91 Ratings)
ADS7951SBDBT
Product Overview
1235212
DiGi Electronics Part Number
ADS7951SBDBT-DGManufacturer
Texas Instruments
ADS7951SBDBT
Description
IC ADC 12BIT SAR 30TSSOPInventory
1190 Pcs New Original In Stock
12 Bit Analog to Digital Converter 8 Input 1 SAR 30-TSSOP
Quantity
Minimum 1
Minimum 1
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ADS7951SBDBT Technical Specifications
Category
Data Acquisition, Analog to Digital Converters (ADC)
Packaging
Tube
Series
microPOWER™
Product Status
Active
Number of Bits
12
Sampling Rate (Per Second)
1M
Number of Inputs
8
Input Type
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 ~ 5.25V
Voltage - Supply, Digital
1.7V ~ 5.25V
Features
-
Operating Temperature
-40°C ~ 125°C
Package / Case
30-TFSOP (0.173", 4.40mm Width)
Supplier Device Package
30-TSSOP
Mounting Type
Surface Mount
Base Product Number
ADS7951
Datasheet & Documents
Manufacturer Product Page
ADS7951SBDBT Specifications
HTML Datasheet
ADS7951SBDBT-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
296-23500-5-NDR
-296-23500-5-NDR
ADS7951SBDBTG4-DG
-ADS7951SBDBTG4-NDR
296-23500-5
-296-23500-5-DG
-ADS7951SBDBTG4
-ADS7951SBDBT-NDR
ADS7951SBDBTG4
Standard Package
60
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
Livre rapidement et support client très serviable. Très bonne expérience!
de desembre 02, 2025
DiGi Electronicsのサイトはとても見やすくて、商品ページへのアクセスもスムーズでした。
de desembre 02, 2025
Their after-sales team provides timely and detailed assistance, which is crucial during urgent repair cases.
de desembre 02, 2025
DiGi Electronics offers reliable after-sales assistance, making me feel valued as a customer.
de desembre 02, 2025
Customer service after purchase is attentive, resolving issues effectively.
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Frequently Asked Questions (FAQ)
When designing a portable medical device requiring 8 analog inputs and a 12-bit resolution, what are the key risks and considerations when selecting the Texas Instruments ADS7951SBDBT for its low power consumption and 1MSPS sampling rate?
When integrating the ADS7951SBDBT into a portable medical device, the primary risk is ensuring sufficient analog signal conditioning to meet the 12-bit accuracy requirement at 1MSPS, especially with its single-ended input type. Designers must carefully analyze noise sources, grounding strategies, and potential signal coupling within the compact 30-TSSOP package. Consideration should be given to the external reference voltage stability, as this directly impacts the overall ADC accuracy. The ADS7951SBDBT's 1:1 S/H to ADC ratio means the sampling aperture uncertainty is critical; ensure your signal bandwidth is well within the Nyquist limits of your signals of interest to avoid aliasing artifacts. Finally, verify that the chosen power supply rails (2.7V-5.25V analog, 1.7V-5.25V digital) can maintain their stability under fluctuating load conditions within the device's thermal budget.
What are the primary challenges and potential pitfalls when replacing an older, discontinued 12-bit SAR ADC, such as the ADS7951SBDBT's predecessor, with the Texas Instruments ADS7951SBDBT in an existing industrial control system that operates at 1MSPS?
Replacing a discontinued ADC with the ADS7951SBDBT in an industrial control system introduces several challenges. The most significant risk is ensuring pin compatibility and footprint matching if direct drop-in replacement is desired. While both might be 12-bit SAR ADCs, subtle differences in pin functions or signal integrity requirements for the SPI interface could necessitate PCB redesign. Beyond physical layout, verify that the input voltage range, reference requirements, and digital interface logic levels of the ADS7951SBDBT align with the existing system's analog front-end and microcontroller. Furthermore, thoroughly test the new system's performance, paying close attention to noise immunity and transient response, as the ADS7951SBDBT's microPOWER™ series may have different internal impedance characteristics compared to older parts.
For applications demanding high-speed data acquisition where signal integrity is paramount, what potential limitations does the single-ended input configuration of the Texas Instruments ADS7951SBDBT present, and how can engineers mitigate associated noise and common-mode issues at its 1MSPS sampling rate?
The single-ended input configuration of the ADS7951SBDBT, while simplifying some designs, presents a significant risk for high-speed, noise-sensitive applications. The primary limitation is its susceptibility to common-mode noise and ground loops. To mitigate this, engineers must implement robust differential signal conditioning upstream of the ADC if the source is inherently differential. For single-ended sources, meticulous PCB layout is crucial: use dedicated ground planes, short trace lengths, and consider shielding for critical input lines. Employing input buffers with low output impedance can also help isolate the ADC from source impedance variations and reduce noise injection. Careful attention to the external reference voltage bypass and decoupling is also essential for maintaining signal integrity at 1MSPS.
In a battery-powered IoT device where minimizing power consumption is critical, what are the specific design trade-offs and potential operational risks associated with maximizing the sampling speed of the Texas Instruments ADS7951SBDBT to its full 1MSPS rate, considering its 2.7V analog supply?
Maximizing the ADS7951SBDBT's sampling rate to 1MSPS on a 2.7V analog supply in a battery-powered IoT device introduces several risks. The primary trade-off is increased power consumption, which will directly impact battery life. Engineers must carefully analyze the power budget and determine if the 1MSPS is truly necessary for the application's data requirements. Another risk is the impact on accuracy. At higher sampling rates, the conversion time becomes a more significant factor, and the effective number of bits (ENOB) might decrease if the input signal changes rapidly or if there are settling time issues in the analog front-end. Consider implementing power-down modes between conversions or using a lower sampling rate when full speed is not required. Also, ensure adequate decoupling on the analog supply to prevent voltage droop during high-speed operation.
When considering the long-term reliability and performance of the Texas Instruments ADS7951SBDBT in a high-temperature industrial environment (up to 125°C), what are the critical factors that could lead to premature failure or drift, and how can these be addressed during the design and validation phases?
For long-term reliability of the ADS7951SBDBT in harsh industrial environments up to 125°C, several factors pose a risk. The primary concern is the impact of elevated temperatures on component aging and the stability of the external reference voltage. Ensure the chosen external reference has a low temperature coefficient and is adequately bypassed. The soldering process is also critical; MSL 2 implies that improper handling during reflow soldering could lead to delamination or other solder joint issues, especially at higher temperatures. Thorough thermal management is essential; ensure the PCB layout allows for adequate heat dissipation, and avoid placing heat-generating components too close to the ADS7951SBDBT. During validation, conduct accelerated life testing at elevated temperatures and humidity to identify any potential drift in conversion accuracy or early-life failures before mass production.
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ADS7951SBDBT CAD Models
Texas Instruments ADS7951SBDBT PCB symbols & footprints
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