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ADS1242IPWR
Texas Instruments
IC ADC 24BIT SIGMA-DELTA 16TSSOP
3373 Pcs New Original In Stock
24 Bit Analog to Digital Converter 4 Input 1 Sigma-Delta 16-TSSOP
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5.0 / 5.0
- (372 Ratings)
ADS1242IPWR
Product Overview
1235151
DiGi Electronics Part Number
ADS1242IPWR-DGManufacturer
Texas Instruments
ADS1242IPWR
Description
IC ADC 24BIT SIGMA-DELTA 16TSSOPInventory
3373 Pcs New Original In Stock
24 Bit Analog to Digital Converter 4 Input 1 Sigma-Delta 16-TSSOP
CAD Models - PCB Symbols & Footprints
Quantity
Minimum 1
Minimum 1
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ADS1242IPWR 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)
15
Number of Inputs
4
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
Voltage - Supply, Analog
2.7V ~ 3.3V, 5V
Voltage - Supply, Digital
2.7V ~ 5.25V
Features
PGA
Operating Temperature
-40°C ~ 85°C
Package / Case
16-TSSOP (0.173", 4.40mm Width)
Supplier Device Package
16-TSSOP
Mounting Type
Surface Mount
Base Product Number
ADS1242
Datasheet & Documents
Manufacturer Product Page
ADS1242IPWR Specifications
HTML Datasheet
ADS1242IPWR-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
ADS1242IPWR-DG
TEXTISADS1242IPWR
ADS1242IPWRG4
296-46283-6
2156-ADS1242IPWR
296-46283-1
296-46283-2
ADS1242IPWRG4-DG
Standard Package
2,500
Alternative Parts
View DetailsPART 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
구매할 때부터 배송까지 모든 과정이 원활했고, 고객 서비스가 매우 친절했어요.
de desembre 02, 2025
他們的售後服務讓我感到非常安心，遇到問題都能迅速得到協助，值得一提！
de desembre 02, 2025
Une expérience d'achat exceptionnelle avec DiGi Electronics, leur service client est vraiment professionnel et attentif.
de desembre 02, 2025
Le sérieux dans l’emballage est évident, tout arrive en parfait état, prêt à être utilisé.
de desembre 02, 2025
Les produits de DiGi Electronics surpassent souvent nos attentes en termes de qualité.
de desembre 02, 2025
常に時間通りに商品を届けてくれるので、非常に信頼しています。
de desembre 02, 2025
Great value and eco-conscious packaging—DiGi is my go-to for sustainable shopping.
de desembre 02, 2025
DiGi Electronics offers reliable support that enhances my confidence in their brand.
de desembre 02, 2025
Their after-sales customer service is prompt and truly cares about customer satisfaction.
de desembre 02, 2025
I appreciate their dedicated support team, always ready to assist with any post-purchase concerns.
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Frequently Asked Questions (FAQ)
What are the key design-in risks when using the ADS1242IPWR in a noisy industrial environment with long sensor leads?
When integrating the ADS1242IPWR in industrial settings with long sensor cables, electromagnetic interference (EMI) can corrupt low-level analog signals, especially with its high 24-bit resolution. To mitigate this risk, use shielded twisted-pair cables and place RC filters (e.g., 1kΩ in series with 10nF to ground) near the ADS1242IPWR's analog inputs. Ensure the external reference voltage source is stable and well-decoupled (e.g., REF3030 with 10µF tantalum and 100nF ceramic in parallel). Also, route analog traces away from digital lines and leverage the integrated PGA to amplify small signals before digitization, improving noise immunity. Avoid sharing ground planes between digital and high-impedance analog circuits to prevent ground loops.
Can the ADS1242IPWR replace the AD7793 in a precision weigh scale design, and what are the critical trade-offs?
Yes, the ADS1242IPWR can replace the AD7793 in precision weigh scale applications, but key trade-offs exist. While both offer 24-bit sigma-delta ADCs and integrated PGAs, the ADS1242IPWR provides four differential inputs vs. AD7793’s three, allowing more sensor flexibility. However, the AD7793 has a slightly lower noise level (40nV/√Hz typical) compared to the ADS1242IPWR (50nV/√Hz), which may affect resolution in ultra-low-drift load cell applications. Also, the ADS1242IPWR requires an external reference, increasing component count, whereas the AD7793 includes an internal reference. Ensure your microcontroller can handle the ADS1242IPWR’s SPI timing requirements, as its read operation includes a status byte by default, requiring additional clock cycles.
How does the external reference requirement of the ADS1242IPWR impact system accuracy in battery-powered applications?
The ADS1242IPWR's reliance on an external reference introduces potential accuracy drift in battery-powered systems as the supply voltage declines. If the reference voltage tracks the analog supply (e.g., using VAVDD), noise and drift worsen during battery discharge. Instead, use a precision low-power reference like the REF3025 (2.5V) or REF3125, which maintain stability across voltage and temperature. Ensure the reference can source the required current (ADS1242IPWR reference input draws ~20µA) and add proper decoupling (1µF ceramic) close to the REF pins. This setup maintains measurement accuracy even as the battery drops from 3.6V to 2.7V, within the ADS1242IPWR’s specified range.
What are the reliability concerns when operating the ADS1242IPWR near its maximum junction temperature in a sealed enclosure?
Operating the ADS1242IPWR near its 85°C maximum ambient temperature in a sealed enclosure raises thermal and long-term reliability risks. Although rated for -40°C to 85°C, poor airflow increases junction temperature, potentially accelerating electromigration and reducing lifespan. Calculate power dissipation: at 3.3V and 300µA (typical), the device dissipates ~1mW—low, but cumulative with nearby components. Use thermal vias under the GND pad to improve heat transfer. Conduct accelerated life testing if operating continuously above 70°C. Also, validate long-term stability of the external reference and PCB materials, as temperature cycling can degrade solder joints and cause drift in precision measurements.
What layout and grounding practices are critical when integrating the ADS1242IPWR in mixed-signal PCBs with switching regulators?
Integrating the ADS1242IPWR in systems with switching regulators demands careful PCB layout to avoid injecting switching noise into sensitive analog measurements. Use a solid analog ground plane separate from the digital/power plane, connected at a single point near the ADS1242IPWR’s GND pin. Keep high-frequency digital traces (SPI clock, CS) short and route them away from analog inputs and reference lines. Place bypass capacitors (100nF ceramic + 10µF tantalum) as close as possible to AVDD and DVDD pins. If using a switcher, place it on the opposite side of the board and use an LC π-filter to feed the analog section. Shield the ADS1242IPWR’s analog front-end and ensure the reference input is noise-free—consider adding a dedicated LDO like LP2985 for the analog supply rail.
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.
ADS1242IPWR CAD Models
Texas Instruments ADS1242IPWR PCB symbols & footprints
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