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ADS131E08SPAGR
Texas Instruments
IC AFE 8 CHAN 24BIT 64TQFP
3394 Pcs New Original In Stock
8 Channel AFE 24 Bit 17.6 mW 64-TQFP (10x10)
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ADS131E08SPAGR
Product Overview
1281919
DiGi Electronics Part Number
ADS131E08SPAGR-DGManufacturer
Texas Instruments
ADS131E08SPAGR
Description
IC AFE 8 CHAN 24BIT 64TQFPInventory
3394 Pcs New Original In Stock
8 Channel AFE 24 Bit 17.6 mW 64-TQFP (10x10)
Quantity
Minimum 1
Minimum 1
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ADS131E08SPAGR Technical Specifications
Category
Data Acquisition, Analog Front End (AFE)
Packaging
Cut Tape (CT) & Digi-Reel®
Series
-
Product Status
Active
Number of Bits
24
Number of Channels
8
Power (Watts)
17.6 mW
Voltage - Supply, Analog
2.7V ~ 5.25V
Voltage - Supply, Digital
1.8V ~ 3.6V
Mounting Type
Surface Mount
Package / Case
64-TQFP
Supplier Device Package
64-TQFP (10x10)
Base Product Number
ADS131E08
Datasheet & Documents
Manufacturer Product Page
ADS131E08SPAGR Specifications
HTML Datasheet
ADS131E08SPAGR-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
-296-43770-1-DG
296-43770-1
296-43770-6
296-43770-2
Standard Package
1,500
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
Their competitive pricing makes DiGi Electronics a go-to online electronics store.
de desembre 02, 2025
Their commitment to after-sales excellence is truly admirable.
de desembre 02, 2025
The team’s expertise and professionalism make my DIY journey more enjoyable and productive.
de desembre 02, 2025
I appreciated the quick shipment and prompt responses from their customer support team.
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Frequently Asked Questions (FAQ)
What are the critical layout considerations when designing a PCB for the ADS131E08SPAGR to minimize noise and ensure 24-bit performance in a multi-channel data acquisition system?
When integrating the ADS131E08SPAGR, prioritize a clean analog ground plane separate from digital return paths, use guard rings around high-impedance input traces, and place decoupling capacitors (100 nF ceramic + 1–10 µF tantalum) as close as possible to each AVDD and DVDD pin. Route analog input signals differentially and away from digital lines (SPI, clocks) to prevent crosstalk. Maintain symmetrical trace lengths for matched channel performance and avoid vias in sensitive analog paths. A solid ground plane beneath the 64-TQFP package is essential for thermal and EMI stability—failure to follow these practices can degrade SNR and introduce channel-to-channel offset errors, undermining the 24-bit resolution advantage.
Can the ADS131E08SPAGR be safely replaced with the ADS131M08 in an existing design without firmware or hardware changes, and what risks should I evaluate?
While both the ADS131E08SPAGR and ADS131M08 are 8-channel, 24-bit ADCs from TI, direct replacement is not recommended without validation. The ADS131M08 uses a different interface (SPI vs. the E08’s parallel interface), requires different timing configurations, and has distinct register maps. Additionally, the M08 operates at lower power but may have different startup behavior and calibration requirements. If you're considering migration due to supply constraints, you must redesign the digital interface, update firmware, and revalidate signal integrity—especially in high-EMI environments. Always perform bench testing with real sensor inputs to confirm performance parity before full deployment.
How does the dual-supply requirement (2.7V–5.25V analog, 1.8V–3.6V digital) of the ADS131E08SPAGR impact power supply design in battery-powered industrial sensor applications?
The ADS131E08SPAGR’s split supply rails demand careful power architecture planning. In battery-powered systems, you’ll typically need a boost converter to generate 3.3V for AVDD (if using a 3V Li-ion cell) and a separate LDO or buck converter for DVDD (1.8V or 3.3V). Ensure sequencing is controlled—applying digital voltage before analog can cause latch-up or increased leakage. Use low-noise LDOs with PSRR > 60 dB at 100 kHz to prevent supply ripple from degrading ADC performance. Also, monitor total system current: at 17.6 mW, the ADS131E08SPAGR is efficient, but transient loads from other components can induce ground bounce. Implement star grounding and local bulk capacitance to maintain stability across temperature and load cycles.
What are the long-term reliability risks of using the ADS131E08SPAGR in high-humidity environments, and how does its MSL 3 rating affect manufacturing handling?
The ADS131E08SPAGR has an MSL 3 rating (168 hours floor life), meaning it can absorb moisture during storage and may suffer popcorning or delamination if not handled properly during reflow. In high-humidity end-use environments (e.g., outdoor medical or industrial sensors), moisture ingress can lead to increased leakage currents on the TQFP leads, potentially affecting DC accuracy and increasing offset drift over time. To mitigate risk, bake the devices per J-STD-033 if exposed beyond floor life, use conformal coating on the assembled PCB, and ensure conformal coating does not bridge pins or interfere with thermal dissipation. Additionally, avoid rapid thermal cycling without proper acclimation to prevent condensation under the package.
When comparing the ADS131E08SPAGR to the Analog Devices ADAS1256 for high-channel-count ECG or vibration monitoring, what trade-offs should I consider in terms of integration, noise, and system complexity?
The ADS131E08SPAGR offers superior channel count (8 vs. 6 in ADAS1256) and lower power (17.6 mW vs. ~100 mW), making it better suited for portable, multi-sensor systems. However, the ADAS1256 includes integrated PGA and excitation current sources, reducing external component count in transducer-based applications. The ADS131E08SPAGR requires external front-end circuitry (e.g., anti-aliasing filters, gain stages), increasing BOM complexity but offering greater flexibility in signal conditioning. In low-frequency precision apps like ECG, the ADS131E08SPAGR’s lower noise floor (down to 1.8 µVpp) provides better dynamic range, but you must carefully design the analog front end to match. Choose based on whether integration (ADAS1256) or scalability and power efficiency (ADS131E08SPAGR) is more critical to your system architecture.
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ADS131E08SPAGR CAD Models
Texas Instruments ADS131E08SPAGR PCB symbols & footprints
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