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ADS7815U/1K
Texas Instruments
IC ADC 16BIT SAR 28SOIC
2303 Pcs New Original In Stock
16 Bit Analog to Digital Converter 1 Input 1 SAR 28-SOIC
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5.0 / 5.0
- (165 Ratings)
ADS7815U/1K
Product Overview
1274293
DiGi Electronics Part Number
ADS7815U/1K-DGManufacturer
Texas Instruments
ADS7815U/1K
Description
IC ADC 16BIT SAR 28SOICInventory
2303 Pcs New Original In Stock
16 Bit Analog to Digital Converter 1 Input 1 SAR 28-SOIC
Quantity
Minimum 1
Minimum 1
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ADS7815U/1K Technical Specifications
Category
Data Acquisition, Analog to Digital Converters (ADC)
Packaging
-
Series
-
Product Status
Last Time Buy
Number of Bits
16
Sampling Rate (Per Second)
250k
Number of Inputs
1
Input Type
Single Ended
Data Interface
Parallel
Configuration
S/H-ADC
Ratio - S/H:ADC
1:1
Number of A/D Converters
1
Architecture
SAR
Reference Type
External, Internal
Voltage - Supply, Analog
±5V
Voltage - Supply, Digital
5V
Features
-
Operating Temperature
-25°C ~ 85°C
Package / Case
28-SOIC (0.295", 7.50mm Width)
Supplier Device Package
28-SOIC
Mounting Type
Surface Mount
Base Product Number
ADS7815
Datasheet & Documents
Manufacturer Product Page
ADS7815U/1K Specifications
HTML Datasheet
ADS7815U/1K-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
3 (168 Hours)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
ADS7815U/1KE4-DG
ADS7815U/1K-NDR
ADS7815U/1KE4
Standard Package
1,000
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
Delivery packaging was excellent, keeping the product safe from damage.
de desembre 02, 2025
I am very pleased with the consistent quality and caring service from DiGi.
de desembre 02, 2025
Their prompt service made my urgent order process seamless.
de desembre 02, 2025
The quality of the sensitive components I ordered was impeccable, with no defects or flaws.
de desembre 02, 2025
I was impressed by how easy it was to get help from their support team whenever I needed.
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Frequently Asked Questions (FAQ)
When considering the ADS7815U/1K for a new design, what are the potential integration challenges with ±5V analog supplies, and how can I mitigate them to avoid common design risks?
Integrating the ADS7815U/1K with ±5V analog supplies requires careful attention to power supply sequencing and noise filtering. Ensure the positive and negative analog rails are established before enabling the digital supply (5V). Using low-ESR ceramic capacitors close to the device pins for both analog supplies is crucial to minimize ripple and prevent noise coupling that could degrade ADC performance. Consider a cascaded filtering approach with ferrite beads and larger electrolytic capacitors for improved noise suppression, especially in high-impedance signal paths. The ADS7815U/1K's internal architecture is relatively robust, but poor power integrity is a primary driver of reduced resolution and linearity, so rigorous power supply testing is recommended during development.
Given the ADS7815U/1K is nearing its Last Time Buy (LTB) status, what are the most critical factors to evaluate when selecting a replacement part like the ADS9224RIRHBR, and what design uncertainties should I anticipate?
As the ADS7815U/1K is LTB, migrating to a substitute like the ADS9224RIRHBR requires a thorough risk assessment. Key evaluation factors include pin compatibility (expect differences, especially with pinouts for different interface types or auxiliary functions), equivalent performance metrics (sampling rate, resolution, INL/DNL, and noise), and power consumption trade-offs. The ADS9224RIRHBR, for example, may offer higher performance but could have different input voltage ranges or require a different digital interface, necessitating significant board redesign and software changes. Anticipate uncertainties around the ADS9224RIRHBR's operational temperature range and its ability to meet your specific signal-to-noise ratio (SNR) requirements with your existing signal chain. A full validation cycle, including stress testing with your target application's signal conditions, is essential to mitigate the risk of functional failure or performance degradation.
For applications requiring high-speed data acquisition with the ADS7815U/1K, what are the practical limitations of its 250kSPS sampling rate when interfacing with a parallel data bus, and what common design pitfalls should I avoid to maintain data integrity?
The ADS7815U/1K's 250kSPS sampling rate, when combined with its parallel data interface, presents practical limitations primarily related to the host microcontroller's processing speed and bus bandwidth. A common design pitfall is assuming the microcontroller can reliably read all 16 bits of data within the conversion time at the maximum sampling rate, especially if other critical tasks are running concurrently. This can lead to dropped conversions or corrupted data. To avoid this, ensure your host processor has sufficient clock speed and dedicated I/O ports to handle the parallel data stream without interrupts. Implement careful timing analysis to confirm that data capture aligns with the ADC's data ready signals. For systems pushing the limits, consider a dedicated FPGA or a faster microcontroller with DMA capabilities to offload the parallel data acquisition, thus mitigating the risk of data loss.
When operating the ADS7815U/1K at its edge of the -25°C to 85°C temperature range, what are the most likely reliability concerns that could arise, and how can I proactively address them in a demanding environment?
Operating the ADS7815U/1K at the extremes of its -25°C to 85°C temperature range can introduce reliability concerns, primarily related to component drift and thermal stress. At lower temperatures, leakage currents can increase, potentially affecting the accuracy of the internal reference or analog components. At higher temperatures, accelerated aging mechanisms can become a concern, potentially leading to premature component failure or performance degradation over time. To proactively address these, ensure adequate thermal management for the PCB assembly, including proper ventilation and heatsinking if necessary, even though the ADS7815U/1K itself doesn't have a specific heatsink requirement. Consider desensitizing critical analog circuitry to temperature variations by using high-quality, temperature-stable passive components in the signal path. Performing accelerated life testing under worst-case temperature conditions is a good risk mitigation strategy to validate long-term reliability.
What are the critical considerations for selecting an appropriate external reference voltage for the ADS7815U/1K to maximize performance, and what specific integration risks arise if the external reference is not properly implemented?
Selecting an external reference voltage for the ADS7815U/1K is crucial for achieving its full 16-bit accuracy. The primary considerations are the reference's voltage noise density (nV/√Hz), its temperature coefficient (ppm/°C), and its long-term stability. A noisy or drifting reference directly translates to noise and inaccuracy in the ADC's output. Critical integration risks associated with improper external reference implementation include poor linearity (INL/DNL) due to the reference not being perfectly stable across the input voltage range, and increased noise floor, effectively reducing the achievable resolution. Always use a high-quality voltage reference IC with appropriate buffering and bypass capacitors to ensure a clean and stable reference supply. Measure the reference voltage noise spectrum and temperature drift in your actual operating conditions to confirm it meets the ADS7815U/1K's requirements and to mitigate the risk of sub-optimal ADC performance.
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.
ADS7815U/1K CAD Models
Texas Instruments ADS7815U/1K PCB symbols & footprints
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