Overview
The LTC2498HUHF#TRPBF is a high-precision analog-to-digital converter (ADC) produced by Analog Devices Inc. This 24-bit, 8-/16-channel ΔΣ (Delta-Sigma) ADC is designed with Easy Drive technology, which eliminates dynamic input current errors and the shortcomings of on-chip buffering through automatic cancellation of differential input current. This feature allows for the direct digitization of rail-to-rail input signals with exceptional DC accuracy, even with large external source impedances.
The device includes a high-accuracy temperature sensor and an integrated oscillator, enabling it to measure both external signals and its internal temperature. The temperature sensor offers 1/30th °C resolution and 2°C absolute accuracy.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices Inc. |
| Description | IC ADC 24BIT 16CH DELTA 38-QFN |
| Voltage - Supply, Digital | 2.7 V ~ 5.5 V |
| Voltage - Supply, Analog | 2.7 V ~ 5.5 V |
| Package / Case | 38-WFQFN Exposed Pad |
| Operating Temperature | -40°C ~ 125°C |
| Number of Inputs | 8, 16 |
| Number of Bits | 24 |
| Number of A/D Converters | 1 |
| Sampling Rate (Per Second) | 7.5 |
| Reference Type | External |
| Input Type | Differential, Single Ended |
| Data Interface | SPI |
| Architecture | Sigma-Delta |
| Lead Free Status / RoHS Status | Lead free / RoHS Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Key Features
- 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 with exceptional DC accuracy.
- High-Accuracy Temperature Sensor: Offers 1/30th °C resolution and 2°C absolute accuracy.
- Integrated Oscillator: Enables the device to operate independently without external clock sources.
- 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.
- SPI Interface: Facilitates communication with microcontrollers and other digital systems.
- Low Noise and High Accuracy: Achieves high noise rejection (better than 87dB for 50Hz and 60Hz noise) and DC specifications such as 2ppm INL, 1ppm offset, and 25ppm full-scale error.
Applications
The LTC2498HUHF#TRPBF 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 low noise are critical for diagnostic and monitoring equipment.
- Aerospace and Defense: For applications requiring high reliability and precision under varying environmental conditions.
- Test and Measurement Equipment: For calibration and measurement instruments that demand high accuracy and stability.
- Environmental Monitoring: For measuring temperature, pressure, and other environmental parameters with high precision.
Q & A
- What is the primary function of the LTC2498HUHF#TRPBF?
The primary function is to convert analog signals into digital signals with high precision, using a 24-bit Delta-Sigma ADC.
- What is the Easy Drive technology in the LTC2498HUHF#TRPBF?
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 with exceptional DC accuracy.
- What is the resolution and accuracy of the integrated temperature sensor?
The temperature sensor offers 1/30th °C resolution and 2°C absolute accuracy.
- What is the operating temperature range of the LTC2498HUHF#TRPBF?
The operating temperature range is -40°C to 125°C.
- What types of input signals can the LTC2498HUHF#TRPBF handle?
The device can handle both differential and single-ended input signals.
- What is the data interface used by the LTC2498HUHF#TRPBF?
The device uses an SPI (Serial Peripheral Interface) for data communication.
- What are the key DC specifications of the LTC2498HUHF#TRPBF?
The key DC specifications include 2ppm INL, 1ppm offset, and 25ppm full-scale error.
- Is the LTC2498HUHF#TRPBF RoHS compliant?
Yes, the device is lead-free and RoHS compliant.
- What is the moisture sensitivity level (MSL) of the LTC2498HUHF#TRPBF?
The MSL is 1 (Unlimited).
- What are some typical applications of the LTC2498HUHF#TRPBF?
Typical applications include industrial automation, medical devices, aerospace and defense, test and measurement equipment, and environmental monitoring.
