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ADS8678IDBTR
Texas Instruments
IC ADC 38TSSOP
3055 Pcs New Original In Stock
Bit Analog to Digital Converter Input 38-TSSOP
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Minimum 1
5.0 / 5.0
- (512 Ratings)
ADS8678IDBTR
Product Overview
1236273
DiGi Electronics Part Number
ADS8678IDBTR-DGManufacturer
Texas Instruments
ADS8678IDBTR
Description
IC ADC 38TSSOPInventory
3055 Pcs New Original In Stock
Bit Analog to Digital Converter Input 38-TSSOP
Quantity
Minimum 1
Minimum 1
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ADS8678IDBTR Technical Specifications
Category
Data Acquisition, Analog to Digital Converters (ADC)
Packaging
-
Series
-
Product Status
Active
Package / Case
38-TFSOP (0.173", 4.40mm Width)
Supplier Device Package
38-TSSOP
Mounting Type
Surface Mount
Base Product Number
ADS8678
Datasheet & Documents
Manufacturer Product Page
ADS8678IDBTR Specifications
HTML Datasheet
ADS8678IDBTR-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
Standard Package
2,000
Alternative Parts
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Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
在DiGi Electronics購買，是我做過最明智的決定之一，產品很好用，也很專業。
de desembre 02, 2025
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de desembre 02, 2025
Stock levels at DiGi Electronics are consistently high, reducing our wait times significantly.
de desembre 02, 2025
The attention to packaging detail from DiGi Electronics demonstrates their dedication to customer care.
de desembre 02, 2025
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de desembre 02, 2025
Their post-purchase service is prompt and dependable, ensuring peace of mind.
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Frequently Asked Questions (FAQ)
When designing with the ADS8678IDBTR, what are the critical considerations for signal integrity and layout to avoid performance degradation, especially in noisy industrial environments?
When implementing the ADS8678IDBTR, meticulous attention to PCB layout is paramount. Ensure short, wide traces for analog input signals to minimize impedance and parasitic inductance. Proper decoupling capacitors (e.g., 0.1uF ceramic and a larger tantalum or electrolytic) placed as close as possible to the device's power pins are essential for stability. A solid ground plane is crucial to reduce common-mode noise. For noisy industrial environments, consider guarded routing techniques for analog inputs and ensure proper shielding of the ADC circuitry if possible. The ADS8678IDBTR's performance is highly sensitive to external noise coupling, so a carefully designed layout can prevent unexpected errors and maintain its specified accuracy.
What are the potential trade-offs when selecting the ADS8678IDBTR for a high-speed data acquisition system compared to other ADCs with similar resolution but potentially higher sampling rates?
The ADS8678IDBTR offers a compelling balance of resolution and input range flexibility, but it's crucial to understand its limitations for high-speed applications. If your system requires sampling rates significantly exceeding the ADS8678IDBTR's capabilities, you might experience aliasing or insufficient time for signal conditioning. In such cases, consider ADCs like the ADS8881 for higher throughput, though you'll need to manage its narrower input range and potentially require external signal amplification. The decision hinges on whether your primary constraint is resolution/input range flexibility or raw sampling speed. For systems needing to capture transient events precisely, a higher sampling rate ADC might be a better fit, even if it means sacrificing some of the ADS8678IDBTR's versatility.
If I need to replace an older, discontinued ADC like the Analog Devices AD7866-3 in a critical medical device, how can I assess the suitability and migration risks of using the Texas Instruments ADS8878IDBTR?
Migrating from a discontinued part like the AD7866-3 to the ADS8678IDBTR requires a thorough risk assessment. While both are SAR ADCs, critical differences lie in their input structures, reference requirements, and digital interfaces. The ADS8678IDBTR features a selectable input range, which is a significant advantage over the AD7866-3's fixed range, potentially simplifying input buffering. However, verify that the ADS8678IDBTR's digital interface (SPI or parallel) and voltage levels are compatible with your existing microcontroller. Crucially, perform extensive testing to characterize the ADS8678IDBTR's performance across the expected temperature and voltage variations of your medical device application to ensure it meets the stringent reliability and accuracy demands, especially concerning linearity and spurious-free dynamic range (SFDR).
What are the specific operational limits and potential failure modes to be aware of when driving the input channels of the ADS8678IDBTR with analog signals that might exhibit transient overshoots or undershoots?
The ADS8678IDBTR's input protection diodes are designed to handle moderate transients, but sustained or significant overshoots/undershoots can lead to device damage or performance degradation. The internal ESD diodes are rated for certain current levels, and exceeding these can degrade the device's long-term reliability or even cause immediate failure. To mitigate this risk, it's prudent to implement external clamping circuitry using fast-acting diodes (e.g., Schottky diodes) to limit voltage excursions to within the ADS8678IDBTR's absolute maximum ratings. Furthermore, consider the charging current that flows into the device's sampling capacitor during overshoots; if this current is too high, it can affect the ADC's accuracy and longevity. Always consult the datasheet's Electrical Characteristics and Absolute Maximum Ratings sections for precise guidance.
When integrating the ADS8878IDBTR into a system with limited power budget, what are the practical power consumption trade-offs associated with different operating modes and sampling rates?
The ADS8878IDBTR offers several power-saving modes that are essential for battery-powered or power-constrained applications. The device's power consumption is directly proportional to its sampling rate. Operating at its maximum sampling rate will naturally consume the most power. For lower power consumption, utilize the power-down or shutdown modes when the ADC is not actively sampling. The 'Auto Power Down' feature, if available and configurable, can be particularly effective. However, be mindful of the wake-up time from these low-power states, as it can introduce latency into your data acquisition sequence. When optimizing for power, a trade-off often exists between power consumption and conversion speed/availability. Analyze your application's real-time requirements to select the most energy-efficient operating mode for the ADS8878IDBTR.
Quality Assurance (QC)
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ADS8678IDBTR CAD Models
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