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ADS1148IPWR
Texas Instruments
IC ADC 16BIT SIGMA-DELTA 28TSSOP
19321 Pcs New Original In Stock
16 Bit Analog to Digital Converter 4, 7 Input 1 Sigma-Delta 28-TSSOP
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5.0 / 5.0
- (107 Ratings)
ADS1148IPWR
Product Overview
1229371
DiGi Electronics Part Number
ADS1148IPWR-DGManufacturer
Texas Instruments
ADS1148IPWR
Description
IC ADC 16BIT SIGMA-DELTA 28TSSOPInventory
19321 Pcs New Original In Stock
16 Bit Analog to Digital Converter 4, 7 Input 1 Sigma-Delta 28-TSSOP
Quantity
Minimum 1
Minimum 1
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ADS1148IPWR Technical Specifications
Category
Data Acquisition, Analog to Digital Converters (ADC)
Packaging
Cut Tape (CT) & Digi-Reel®
Series
-
Product Status
Active
Number of Bits
16
Sampling Rate (Per Second)
2k
Number of Inputs
4, 7
Input Type
Differential, Single Ended
Data Interface
SPI
Configuration
MUX-PGA-ADC
Ratio - S/H:ADC
-
Number of A/D Converters
1
Architecture
Sigma-Delta
Reference Type
External, Internal
Voltage - Supply, Analog
2.7V ~ 5.25V
Voltage - Supply, Digital
2.7V ~ 5.25V
Features
PGA
Operating Temperature
-40°C ~ 105°C
Package / Case
28-TSSOP (0.173", 4.40mm Width)
Supplier Device Package
28-TSSOP
Mounting Type
Surface Mount
Base Product Number
ADS1148
Datasheet & Documents
Manufacturer Product Page
ADS1148IPWR Specifications
HTML Datasheet
ADS1148IPWR-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
ADS1148IPWR-DG
296-38038-2
296-38038-1
-296-38038-1-DG
296-38038-6
Standard Package
2,000
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
포장재가 튼튼하고, 배송 추적도 실시간으로 확인 가능해서 매우 편리했고, 제품도 무사히 도착했습니다.
de desembre 02, 2025
배송 날짜를 미리 안내받아서 일정 조율이 수월했어요.
de desembre 02, 2025
Qualité excellente à prix raisonnable, je recommande cette marque.
de desembre 02, 2025
買い替えや追加注文の際もスムーズに対応してもらえ、感謝しています。
de desembre 02, 2025
The after-sales support has been exceptional, helping me resolve issues smoothly.
de desembre 02, 2025
Choosing DiGi Electronics has been a reliable decision for our business.
de desembre 02, 2025
I commend their ability to handle urgent orders efficiently, which is vital for my repair deadlines.
de desembre 02, 2025
Trust in DiGi Electronics means never worrying about product failure; their durability is unmatched.
de desembre 02, 2025
I was impressed by how swiftly they managed to process and ship my order.
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Frequently Asked Questions (FAQ)
Can the ADS1148IPWR operate reliably in noisy industrial environments with high EMI when using its internal reference, and what design precautions should be taken?
Yes, the ADS1148IPWR can operate in noisy industrial environments, but relying solely on the internal reference increases susceptibility to EMI-induced measurement drift. For robust performance, use the internal reference only in stable, low-noise conditions with proper PCB layout—short traces, guard rings, and solid ground planes. In high-EMI applications, switch to a low-noise, externally regulated reference like the REF5025 or ADR4525 to improve PSRR and long-term stability. Always decouple AVDD and the REFIN/REFOUT pins with 10µF ceramic in parallel with 100nF near the device, and consider shielding sensitive analog traces in motor control or factory automation systems using the ADS1148IPWR for sensor signal conditioning.
What are the critical trade-offs when replacing the ADS114S02-Q1 with the ADS1148IPWR in an automotive sensor module design?
Replacing the ADS114S02-Q1 with the ADS1148IPWR introduces key trade-offs: while both are 16-bit sigma-delta ADCs in 28-TSSOP, the ADS1148IPWR lacks automotive AEC-Q100 certification, impacting reliability in automotive safety systems. However, the ADS1148IPWR integrates a programmable gain amplifier (PGA), which the ADS114S02-Q1 lacks, simplifying signal conditioning for low-level sensors like strain gauges. Ensure robust external ESD protection and extended temperature validation (-40°C to 105°C) if using the ADS1148IPWR in automotive non-safety applications. Also, verify SPI timing compatibility, as the ADS1148IPWR’s 2 kSPS rate and digital filtering may differ from the ADS114S02-Q1’s behavior under dynamic load conditions.
How does input multiplexer crosstalk affect channel accuracy in a multi-sensor system using the ADS1148IPWR, and how can it be minimized?
The ADS1148IPWR’s integrated MUX can introduce crosstalk between channels—especially when switching from a high-voltage to a low-voltage signal—due to capacitive coupling across switches, degrading measurement accuracy in applications like thermocouple or RTD arrays. To minimize this, allow sufficient settling time (typically 1–2 ms) after channel switching, use drive-strength buffers (e.g., OPA316) on high-impedance sources, and sequence channels from highest to lowest voltage when possible. Additionally, implement software-based calibration: measure a known off-channel state and subtract residual offsets. Avoid routing adjacent MUX channel traces in parallel; use ground guards between analog traces to reduce PCB-level crosstalk in dense layouts using the ADS1148IPWR.
Is the ADS1148IPWR suitable for battery-powered portable medical devices, and what are the risks of using its internal PGA at lowest gain settings?
The ADS1148IPWR can be used in battery-powered medical devices like portable glucose meters or wearable sensors due to its 2.7V to 5.25V supply range and low power sigma-delta architecture. However, using the internal PGA at low gains (e.g., 1–2 V/V) offers minimal noise benefit while consuming the same power—defeating power optimization efforts. For high-impedance biopotential sensors (e.g., ECG), set higher PGA gains (8–64 V/V) to amplify signals above the ADC’s noise floor (~10 µV RMS). Always disable unused channels and leverage sleep modes via SPI to extend battery life. Monitor INL and offset drift over temperature; validate performance with real electrode interfaces, as stray leakage currents can saturate the PGA in humid environments when using the ADS1148IPWR.
What are the risks of hot-swapping analog sensor inputs with the ADS1148IPWR, and how can interface damage be prevented?
Hot-swapping analog sensors while the ADS1148IPWR is powered risks overvoltage transients, latch-up, or ESD damage due to unprotected input pins—even with the internal PGA. The device lacks overvoltage protection, so connecting or disconnecting sensors like load cells or pH probes under power can inject currents beyond absolute maximum ratings. To prevent damage, add series current-limiting resistors (1–10 kΩ) and low-leakage TVS diodes (e.g., SP3209-05) on each analog input. For differential configurations, use fail-safe resistors to bias inputs within AVDD and GND. Also, sequence power-up so analog inputs are stable before enabling the ADC. In field-deployed systems using the ADS1148IPWR, these protections are critical to avoid latent reliability failures from repetitive minor transients.
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ADS1148IPWR CAD Models
Texas Instruments ADS1148IPWR PCB symbols & footprints
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