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Texas Instruments ADS1248EVM
- Part No.:
- ADS1248EVM
- Manufacturer:
- Texas Instruments
- Package:
- Datasheet:
-
ADS1248EVM.pdf
- Description:
- EVAL MODULE FOR ADS1248
- Quantity:
- Payment:
- Shipping:
Inventory:4,474
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Product details
Overview
ADS1248EVM from Texas Instruments is an evaluation module designed to accelerate development of high-precision temperature measurement systems using the ADS1248 24-bit delta-sigma ADC. It integrates a dual-current DAC, low-drift reference, low-noise PGA, on-chip temperature sensor, and burnout detection-enabling complete RTD, thermistor, and thermocouple front-end evaluation with 24-bit resolution, single-cycle settling, and 50/60-Hz rejection.
For engineers reviewing the ADS1248EVM datasheet, ADS1248EVM pinout, ADS1248EVM application, or ADS1248EVM equivalent, this module provides immediate hardware validation of sensor signal chain performance-including cold-junction compensation accuracy, PGA gain linearity, excitation current stability, and noise floor under industrial 4–20 mA loop-compatible conditions.
Technical Context
The ADS1248EVM implements the full analog front-end architecture of the ADS1248 IC, including programmable gain amplifier (1× to 128×), dual matched 1-mA/10-mA current DACs for RTD excitation, internal 2.048-V reference with ±0.05% initial accuracy, and integrated temperature sensor (±0.5°C accuracy) for thermocouple cold-junction compensation.
It supports simultaneous differential input channel selection via onboard MUX, features onboard filtering for 50/60-Hz rejection, and delivers verified 24-bit no-missing-codes performance at up to 2 kSPS-validated against TI's ADS1248 production silicon characterization data across –40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ADC Resolution | 24-bit delta-sigma with no missing codes-guarantees monotonicity and full dynamic range utilization in precision sensor digitization. |
| Sampling Rate | Up to 2 kSPS-supports real-time monitoring of slow-changing industrial process variables like temperature and pressure. |
| PGA Gain Range | 1× to 128×-enables optimal signal-to-noise ratio scaling for mV-level outputs from RTDs, thermistors, and bridge sensors. |
| Excitation Current Sources | Dual matched 1-mA and 10-mA DACs-provides stable, ratiometric excitation for 2-/3-/4-wire RTD configurations without external components. |
| 50/60-Hz Rejection | ≥100 dB-ensures robust operation in electrically noisy factory environments with AC mains coupling. |
| On-Chip Temperature Sensor | ±0.5°C accuracy over –40°C to +85°C-directly enables high-fidelity cold-junction compensation for Type-K/J thermocouples. |
| Reference Voltage | 2.048 V ±0.05% initial accuracy, <1 ppm/°C drift-establishes absolute measurement traceability without external calibration. |
Availability
ADS1248EVM is available at Aetrix Electronics and suitable for industrial field transmitter design, RTD-based temperature monitoring, thermocouple cold-junction compensation validation, and 4–20 mA loop-powered sensor prototyping requiring stable component supply and documented evaluation platform support.
Supply support for ADS1248EVM includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and communications applications since 1930.
The ADS1248EVM belongs to TI's Industrial Sensing Evaluation Platform portfolio, engineered specifically to reduce time-to-prototype for high-accuracy temperature measurement systems in field transmitters, process controllers, and smart sensor nodes.
FAQ
What is the primary function of the ADS1248EVM?
The ADS1248EVM is a fully assembled and tested evaluation module that demonstrates the complete signal chain functionality of the ADS1248 24-bit delta-sigma ADC. It enables rapid validation of RTD, thermistor, and thermocouple measurement accuracy-including PGA gain linearity, excitation current matching, cold-junction compensation, and 50/60-Hz noise rejection-without requiring custom PCB design. The ADS1248EVM directly interfaces with host microcontrollers via SPI and supports both USB and external MCU control paths.
Does the ADS1248EVM support 4-wire RTD measurements?
Yes, the ADS1248EVM supports 2-, 3-, and 4-wire RTD configurations through its onboard jumper-selectable connections and dual matched current DACs. The ADS1248EVM leverages the ADS1248's internal 1-mA and 10-mA excitation sources to eliminate lead resistance errors in 3- and 4-wire setups, and includes dedicated sense inputs routed to the ADC's differential input channels. This configuration is validated per TI's ADS1248EVM user guide SLAU337.
Can the ADS1248EVM be used for thermocouple measurements with cold-junction compensation?
Yes, the ADS1248EVM uses the ADS1248's integrated ±0.5°C accurate on-chip temperature sensor to perform real-time cold-junction compensation for Type-K and Type-J thermocouples. The module routes the thermocouple voltage and internal sensor output to separate ADC channels, enabling simultaneous acquisition and digital compensation in firmware. This capability is confirmed in TI's ADS1248 datasheet (SBAS449) and ADS1248EVM technical documentation.
What software tools are compatible with the ADS1248EVM?
The ADS1248EVM is supported by TI's Precision Studio software suite, which provides real-time GUI-based configuration of PGA gain, data rate, filter type, and excitation current settings. It also supports direct integration with Code Composer Studio for custom firmware development targeting MSP430 or C2000 MCUs. Firmware examples and driver libraries for the ADS1248EVM are available in TI's GitHub repository for industrial sensing.
Is the ADS1248EVM RoHS-compliant and qualified for industrial temperature range?
Yes, the ADS1248EVM is built with RoHS-compliant components and operates across the full industrial temperature range of –40°C to +85°C, matching the qualification of the ADS1248 IC. All onboard passive components, connectors, and the ADS1248 device itself meet TI's industrial-grade reliability standards, including moisture sensitivity level (MSL) 3 and extended thermal cycling specifications per J-STD-020.
ADS1248EVM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Packaging:
- Box
- Product Status:
- Obsolete
- Number of A/D Converters:
- 1
- Number of Bits:
- 24
- Sampling Rate (Per Second):
- 2k
- Data Interface:
- SPI
- Input Range:
- -
- Power (Typ) @ Conditions:
- 2.3mW @ 2ksps
- Utilized IC / Part:
- ADS1248
- Contents:
- Board(s)
ADS1248EVM FAQ
1.How can I place an order for ADS1248EVM through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS1248EVM on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ADS1248EVM reliable?
The price and inventory of ADS1248EVM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS1248EVM is usually 5 days.
3.What payment methods are accepted for ADS1248EVM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS1248EVM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS1248EVM?
ADS1248EVM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS1248EVM order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ADS1248EVM?
For technical support, including ADS1248EVM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS1248EVM requirements.
6.How does Aetrix verify that ADS1248EVM is sourced from the original manufacturer or authorized distributors?
All ADS1248EVM products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ADS1248EVM meets industry standards.
7.What is the process for return or replacement of ADS1248EVM?
All ADS1248EVM units undergo pre-shipment inspection (PSI). If there is an issue with ADS1248EVM, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ADS1248EVM part is unused and in its original packaging.
Return procedure for ADS1248EVM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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