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ADS122U04IPWR
Texas Instruments
IC ADC 24BIT SIGMA-DELTA 16TSSOP
4427 Pcs New Original In Stock
24 Bit Analog to Digital Converter 2, 4 Input 1 Sigma-Delta 16-TSSOP
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5.0 / 5.0
- (126 Ratings)
ADS122U04IPWR
Product Overview
1239145
DiGi Electronics Part Number
ADS122U04IPWR-DGManufacturer
Texas Instruments
ADS122U04IPWR
Description
IC ADC 24BIT SIGMA-DELTA 16TSSOPInventory
4427 Pcs New Original In Stock
24 Bit Analog to Digital Converter 2, 4 Input 1 Sigma-Delta 16-TSSOP
Quantity
Minimum 1
Minimum 1
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ADS122U04IPWR 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)
2k
Number of Inputs
2, 4
Input Type
Differential, Single Ended
Data Interface
UART
Configuration
MUX-PGA-ADC
Ratio - S/H:ADC
-
Number of A/D Converters
1
Architecture
Sigma-Delta
Reference Type
Internal
Voltage - Supply, Analog
±2.5V, 2.3V ~ 5.5V
Voltage - Supply, Digital
2.3V ~ 5.5V
Features
PGA, Simultaneous Sampling, Temperature Sensor
Operating Temperature
-40°C ~ 125°C
Package / Case
16-TSSOP (0.173", 4.40mm Width)
Supplier Device Package
16-TSSOP
Mounting Type
Surface Mount
Base Product Number
ADS122U04
Datasheet & Documents
Manufacturer Product Page
ADS122U04IPWR Specifications
HTML Datasheet
ADS122U04IPWR-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
296-48886-6
ADS122U04IPWR-DG
296-48886-1
296-48886-2
Standard Package
2,000
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
제품의 내구성과 품질이 뛰어나서 오랫동안 사용할 수 있습니다. 정말 만족스럽습니다.
de desembre 02, 2025
I felt reassured by the careful packaging that kept everything intact during the journey.
de desembre 02, 2025
Their commitment to offering variety and maintaining price transparency is commendable.
de desembre 02, 2025
Whenever I need assistance after purchase, their response is immediate and professional.
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Frequently Asked Questions (FAQ)
When integrating the ADS122U04IPWR into a noise-sensitive sensor application, what are the key considerations to mitigate common-mode voltage variations that could impact measurement accuracy?
When integrating the ADS122U04IPWR into noise-sensitive sensor applications, careful attention to the input multiplexer (MUX) configuration and the PGA gain is crucial for mitigating common-mode voltage variations. For differential measurements, ensuring the common-mode voltage stays within the specified range of the internal reference and PGA is vital. Utilizing the internal temperature sensor can also help compensate for temperature-induced drifts, which can be exacerbated by common-mode issues. If signal conditioning is required, consider a differential amplifier with a high Common-Mode Rejection Ratio (CMRR) before the ADS122U04IPWR to present a more stable common-mode signal.
For applications requiring higher accuracy than typical 24-bit ADCs, how can the ADS122U04IPWR be effectively used to achieve better effective resolution, especially when dealing with low-level signals?
To achieve better effective resolution with the ADS122U04IPWR, especially for low-level signals, techniques like oversampling and digital filtering are essential. By increasing the sampling rate beyond the advertised 2kSPS and applying a digital low-pass filter, you can effectively reduce the noise floor and improve the Signal-to-Noise Ratio (SNR). The ADS122U04IPWR's programmable digital filter coefficients allow for optimization of this process. Careful consideration of the PGA gain setting is also paramount; a higher gain will amplify low-level signals but also noise, so a balance must be struck with the oversampling and filtering strategy. Ensure the analog supply voltage is stable and clean, as it directly impacts the reference accuracy and thus overall resolution.
What are the primary design challenges and potential pitfalls when replacing an older dual-channel ADC, like a hypothetical ADS1115, with the Texas Instruments ADS122U04IPWR for a system that requires precise temperature monitoring alongside another analog input?
Replacing a dual-channel ADC like the ADS1115 with the ADS122U04IPWR presents several key challenges. The primary difference is the ADS122U04IPWR's single-channel sigma-delta architecture, requiring careful multiplexing if two distinct analog inputs are needed simultaneously. While the ADS122U04IPWR offers higher resolution (24-bit vs. 16-bit) and a wider supply range, the UART data interface is a significant departure from the I2C interface of the ADS1115, necessitating firmware changes and potential hardware adjustments for communication. Furthermore, ensuring proper analog grounding and decoupling for the higher resolution and sensitivity of the ADS122U04IPWR is more critical than with the ADS1115 to avoid introducing noise that would negate the resolution advantage. The integrated temperature sensor in the ADS122U04IPWR is a benefit, but its accuracy and calibration need to be considered for precise temperature monitoring tasks.
In an industrial environment where electromagnetic interference (EMI) is a concern, what specific layout and grounding strategies are recommended for the Texas Instruments ADS122U04IPWR to maintain its advertised performance and prevent data corruption via its UART interface?
To maintain the performance of the ADS122U04IPWR in EMI-prone industrial environments, a robust PCB layout and grounding strategy are non-negotiable. Use a solid ground plane and ensure that all analog and digital grounds are connected at a single point to prevent ground loops. Place bypass capacitors (e.g., 0.1uF ceramic and a larger tantalum or electrolytic) as close as possible to the power supply pins of the ADS122U04IPWR. For the UART interface, consider using differential signaling drivers and receivers if the trace lengths are significant or if the environment is particularly noisy, although the ADS122U04IPWR itself uses a single-ended UART. Shielding the critical analog signal paths from high-frequency noise sources is also a good practice. Careful routing of the UART signals away from noisy switching components is also advised.
What are the potential long-term reliability risks when operating the ADS122U04IPWR continuously at its maximum specified operating temperature of 125°C, and what measures can be taken to mitigate them?
Operating the ADS122U04IPWR continuously at its maximum specified temperature of 125°C can introduce long-term reliability risks such as accelerated aging of internal components, potential drift in calibration parameters, and increased susceptibility to thermal cycling stress. To mitigate these risks, it is highly recommended to operate the ADS122U04IPWR well within its specified temperature range, ideally below 100°C, if possible. Implementing adequate thermal management on the PCB, such as sufficient copper pour connected to the device's thermal pad and good airflow, can significantly reduce the junction temperature. Regular calibration checks and monitoring of the device's performance over time can also help identify any potential degradation before it impacts system functionality.
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ADS122U04IPWR CAD Models
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