Overview
The LTC2498IUHF#PBF is a high-precision analog-to-digital converter (ADC) produced by Analog Devices Inc. This 24-bit, 8-/16-channel delta-sigma ADC is designed with Easy Drive technology, which eliminates dynamic input current errors and the shortcomings of on-chip buffering. This allows for the direct digitization of rail-to-rail input signals with exceptional DC accuracy. The device also includes a high-accuracy temperature sensor and an integrated oscillator, making it versatile for various measurement applications.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 24 bits |
| Number of Channels | 8-/16-channel (differential/single-ended) |
| Sampling Rate | 15 samples per second (S/s) |
| Input Type | Differential/Single-Ended |
| Converter Type | Delta-Sigma (ΔΣ) |
| Package | 38-Lead QFN (5mm x 7mm w/ EP) |
| Operating Voltage | 2.7 V to 5.5 V |
| Operating Temperature | -40°C to +85°C |
| Integral Non-Linearity (INL) | 2 ppm |
| Offset Error | 1 ppm |
| Full-Scale Error | 25 ppm |
| Offset Drift | 10 nV/°C |
Key Features
- Easy Drive Technology: Eliminates dynamic input current errors and the shortcomings of on-chip buffering, allowing large external source impedances and rail-to-rail input signals to be directly digitized.
- High-Accuracy Temperature Sensor: Offers 1/30th °C resolution and 2°C absolute accuracy.
- Integrated Oscillator: Enhances the device's versatility and accuracy in measurement applications.
- Wide Common Mode Input Range: From 0V to VCC, independent of the reference voltage.
- Auto Calibration: Continuously removes offset and drift associated with external amplifiers.
Applications
The LTC2498IUHF#PBF is suitable for a variety of precision measurement applications, including:
- Industrial Automation: For precise measurement and control in industrial environments.
- Medical Devices: Where high accuracy and reliability are crucial.
- Aerospace and Defense: For applications requiring high precision and robust performance.
- Test and Measurement Equipment: For calibration and measurement tasks that demand high accuracy.
Q & A
- What is the resolution of the LTC2498IUHF#PBF ADC?
The LTC2498IUHF#PBF has a 24-bit resolution. - How many channels does the LTC2498IUHF#PBF support?
The device supports 8-/16-channel configurations (differential/single-ended). - What is the sampling rate of the LTC2498IUHF#PBF?
The sampling rate is 15 samples per second (S/s). - What type of converter is the LTC2498IUHF#PBF?
The LTC2498IUHF#PBF is a delta-sigma (ΔΣ) ADC. - What is the operating voltage range of the LTC2498IUHF#PBF?
The operating voltage range is from 2.7 V to 5.5 V. - What is the temperature range for the LTC2498IUHF#PBF?
The operating temperature range is from -40°C to +85°C. - Does the LTC2498IUHF#PBF include a temperature sensor?
Yes, it includes a high-accuracy temperature sensor with 1/30th °C resolution and 2°C absolute accuracy. - What is the purpose of the Easy Drive technology in the LTC2498IUHF#PBF?
The Easy Drive technology eliminates dynamic input current errors and the shortcomings of on-chip buffering, allowing for the direct digitization of rail-to-rail input signals. - Can the LTC2498IUHF#PBF be used with external amplifiers?
Yes, the device allows optional external amplifiers to be shared between all analog inputs, with auto calibration to remove associated offset and drift. - What is the common mode input range of the LTC2498IUHF#PBF?
The common mode input range is from 0V to VCC, independent of the reference voltage.
