Overview
The LTC2498CUHF#PBF is a 24-bit, 8-/16-channel ΔΣ (Delta-Sigma) Analog-to-Digital Converter (ADC) produced by Analog Devices Inc. This device is renowned for its high accuracy and advanced features, including Easy Drive technology that eliminates dynamic input current errors and the shortcomings of on-chip buffering. It supports both single-ended and differential input modes and includes an integrated high-accuracy temperature sensor and oscillator. The LTC2498 is designed to handle a wide common mode input range and offers exceptional DC accuracy, making it suitable for a variety of precision measurement applications.
Key Specifications
| Parameter | Specification |
|---|---|
| Resolution | 24 bits |
| Number of Channels | 8-/16-channel (single-ended or differential) |
| Input Type | Single-ended or differential |
| Input Current Cancellation | Automatic cancellation of differential input current |
| Common Mode Input Range | 0V to VCC |
| Integral Non-Linearity (INL) | 2 ppm |
| Offset | 1 ppm |
| Full-Scale Error | 25 ppm |
| Offset Drift | 10 nV/°C |
| Temperature Sensor Accuracy | 1/30th °C resolution, 2°C absolute accuracy |
| Package | 38-Lead QFN (5mm x 7mm w/ EP) |
Key Features
- Easy Drive Technology: Eliminates dynamic input current errors and the shortcomings of on-chip buffering.
- High Accuracy Temperature Sensor: Offers 1/30th °C resolution and 2°C absolute accuracy.
- Integrated Oscillator: Provides a stable clock source for the ADC.
- Wide Common Mode Input Range: Allows input signals from 0V to VCC, independent of the reference voltage.
- Auto Calibration: Continuously removes offset and drift associated with external amplifiers.
- Optional External Amplifiers: Can be shared between all analog inputs.
Applications
The LTC2498 is suitable for various precision measurement applications, including but not limited to:
- Industrial Automation: High-accuracy measurements in industrial control systems.
- Medical Devices: Precise data acquisition in medical equipment.
- Aerospace and Defense: High-reliability measurements in aerospace and defense systems.
- Test and Measurement Equipment: Accurate data conversion in test and measurement instruments.
Q & A
- What is the resolution of the LTC2498 ADC?
The LTC2498 has a resolution of 24 bits. - How many channels does the LTC2498 support?
The LTC2498 supports 8-/16-channel configurations (single-ended or differential). - What is the common mode input range of the LTC2498?
The common mode input range is from 0V to VCC. - Does the LTC2498 include an integrated temperature sensor?
Yes, the LTC2498 includes a high-accuracy temperature sensor with 1/30th °C resolution and 2°C absolute accuracy. - What is the package type of the LTC2498CUHF#PBF?
The package type is a 38-Lead QFN (5mm x 7mm w/ EP). - What is the purpose of the Easy Drive technology in the LTC2498?
The Easy Drive technology eliminates dynamic input current errors and the shortcomings of on-chip buffering. - Can external amplifiers be used with the LTC2498?
Yes, external amplifiers can be shared between all analog inputs, and auto calibration continuously removes their associated offset and drift. - What is the offset drift specification of the LTC2498?
The offset drift is 10 nV/°C. - Is the LTC2498 suitable for industrial automation applications?
Yes, the LTC2498 is suitable for high-accuracy measurements in industrial control systems. - Where can I find more detailed specifications and documentation for the LTC2498?
You can find detailed specifications and documentation on the Analog Devices website or through distributors like Mouser Electronics.
