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ADS1271IPWR
Texas Instruments
IC ADC 24BIT SIGMA-DELTA 16TSSOP
5324 Pcs New Original In Stock
24 Bit Analog to Digital Converter 1 Input 1 Sigma-Delta 16-TSSOP
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5.0 / 5.0
- (221 Ratings)
ADS1271IPWR
Product Overview
1255860
DiGi Electronics Part Number
ADS1271IPWR-DGManufacturer
Texas Instruments
ADS1271IPWR
Description
IC ADC 24BIT SIGMA-DELTA 16TSSOPInventory
5324 Pcs New Original In Stock
24 Bit Analog to Digital Converter 1 Input 1 Sigma-Delta 16-TSSOP
Quantity
Minimum 1
Minimum 1
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ADS1271IPWR Technical Specifications
Category
Data Acquisition, Analog to Digital Converters (ADC)
Packaging
Cut Tape (CT) & Digi-Reel®
Series
-
Product Status
Active
Number of Bits
24
Sampling Rate (Per Second)
105k
Number of Inputs
1
Input Type
Differential
Data Interface
SPI
Configuration
ADC
Ratio - S/H:ADC
-
Number of A/D Converters
1
Architecture
Sigma-Delta
Reference Type
External
Voltage - Supply, Analog
5V
Voltage - Supply, Digital
1.65V ~ 3.6V
Features
-
Operating Temperature
-40°C ~ 105°C
Package / Case
16-TSSOP (0.173", 4.40mm Width)
Supplier Device Package
16-TSSOP
Mounting Type
Surface Mount
Base Product Number
ADS1271
Datasheet & Documents
Manufacturer Product Page
ADS1271IPWR Specifications
HTML Datasheet
ADS1271IPWR-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
ADS1271IPWR-DG
296-41191-1
296-41191-2
296-41191-6
Standard Package
2,500
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
Ich schätze die hohe Verpackungsqualität und die präzise Sendungsverfolgung.
de desembre 02, 2025
Customer support is accessible and always willing to help.
de desembre 02, 2025
Thanks to DiGi Electronics, I can enjoy tech upgrades without stress.
de desembre 02, 2025
The thorough packaging protects the products perfectly during transit.
de desembre 02, 2025
DiGi Electronics's logistic tracking system is intuitive and accurate, giving me confidence that my orders are in good hands.
de desembre 02, 2025
Fantastic shopping experience! The delivery was lightning fast, and the prices were incredibly affordable. Highly recommended.
de desembre 02, 2025
Support agents are friendly and resolve issues efficiently.
de desembre 02, 2025
Their commitment to timely delivery is unmatched.
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Frequently Asked Questions (FAQ)
What are the key design risks when integrating the ADS1271IPWR into a high-noise industrial environment with long sensor cables?
When using the ADS1271IPWR in noisy environments with long sensor leads, the primary risk is degradation of effective resolution due to EMI/RFI coupling into the analog input path. Although the sigma-delta architecture provides inherent noise filtering, external differential-mode and common-mode interference can exceed the ADC’s noise rejection capability. To mitigate this, use shielded twisted-pair cabling, add 10Ω series resistors with 100nF differential and 10nF common-mode capacitors near the ADS1271IPWR inputs, and ensure a solid ground plane. Additionally, keep the analog input trace length on the PCB under 1 inch and guard with ground traces. The ADS1271IPWR’s external reference allows using a low-noise buffer like the REF5050 to further improve PSRR and noise immunity in such conditions.
Can the ADS1271IPWR replace the ADS1258 in an existing 24-bit data acquisition system without changes to the power supply or interface logic?
Replacing the ADS1258 with the ADS1271IPWR requires careful evaluation due to key supply voltage differences. The ADS1271IPWR has a digital supply range of 1.65V to 3.6V, while the ADS1258 operates at 3V to 5V logic levels. If your system uses 5V logic, direct SPI communication with the ADS1271IPWR is not safe unless a level shifter such as the TXB0108 is used. Also, the ADS1271IPWR draws higher peak current during conversion cycles, so verify that your LDO or regulator (e.g., TPS7A47) can support transient demands without droop. Additionally, recalibrate timing since the ADS1271IPWR’s 105k sampling rate may require adjustments to SPI clock settings and digital filter alignment in firmware.
How does the external reference requirement of the ADS1271IPWR affect system accuracy and long-term drift in precision weigh-scale applications?
The ADS1271IPWR relies on an external reference, which directly impacts overall gain accuracy and temperature drift—critical in weigh-scale designs. To achieve the full 24-bit performance, pair the ADS1271IPWR with a high-stability reference such as the REF5025 (2.5V, 3ppm/°C). Without proper reference buffering and PCB layout, noise injection and reference drift can dominate the error budget. Use a low-pass RC filter (1kΩ + 10µF) on the reference input, isolate the analog ground plane, and avoid placing noisy digital lines nearby. In high-humidity environments, consider conformal coating, as leakage currents across the PCB can modulate the external reference and introduce nonlinearity.
What are the practical limitations of using the ADS1271IPWR at its maximum 105kSPS sampling rate in multiplexed multi-channel data acquisition systems?
The ADS1271IPWR is a single-channel sigma-delta ADC, so achieving multiplexed multi-channel operation requires external components like the TMUX7204 with careful timing coordination. At 105kSPS, the full settling time must include analog mux propagation delays, input settling time (<1µs), and ADC startup latency. The system-level sample rate drops significantly with additional mux and settling overhead—an 8-channel setup may realistically achieve only ~10kSPS per channel. Synchronization is also challenging; ensure the DRDY signal from the ADS1271IPWR is used to trigger mux channel changes via FPGA or MCU to avoid metastability. Avoid using slower muxes like CD4051B; instead, opt for precision, low-charge-injection switches to maintain accuracy.
What reliability issues should be considered when deploying the ADS1271IPWR in automotive under-hood applications near the maximum 105°C operating temperature?
Operating the ADS1271IPWR near its 105°C upper limit in under-hood automotive systems introduces long-term reliability risks, including accelerated electromigration and solder joint fatigue. Ensure the PCB uses ENIG finish and thermal vias under the exposed pad to dissipate heat effectively. Derate ambient temperature by at least 15°C unless thermal modeling confirms safe operation. The moisture sensitivity level (MSL2) means the ADS1271IPWR must be reflow-assembled within 1 year of dry pack opening or baked per J-STD-033. Use conformal coating to prevent condensation-induced leakage across high-impedance analog nodes. Additionally, verify power supply stability—use low-ESR ceramic capacitors (10µF X7R + 100nF) close to the ADS1271IPWR pins to prevent brownout resets due to ripple under load transients.
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ADS1271IPWR CAD Models
Texas Instruments ADS1271IPWR PCB symbols & footprints
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