Overview
The LTC2494IUHF#TRPBF is a 16-bit, 8-/16-channel ΔΣ (Delta-Sigma) Analog-to-Digital Converter (ADC) produced by Analog Devices Inc. This device is notable for its Easy Drive technology, which eliminates dynamic input current errors and the shortcomings of on-chip buffering, allowing for the direct digitization of high-impedance sensors and rail-to-rail input signals with exceptional DC accuracy.
The LTC2494 includes programmable gain, a high-accuracy temperature sensor, and an integrated oscillator. It can be configured to measure external signals from combinations of 16 analog input channels operating in single-ended or differential modes, or its internal temperature sensor. The integrated temperature sensor offers 1/2°C resolution and 2°C absolute accuracy.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 16-bit |
| Number of Channels | 8 differential / 16 single-ended |
| Sampling Rate | 15 S/s (standard), 30 kS/s (optional) |
| Input Type | Differential/Single-Ended, Pseudo-Differential/Single-Ended |
| Analog Supply Voltage | 2.7 V to 5.5 V |
| Digital Supply Voltage | 2.7 V to 5.5 V |
| Operating Temperature Range | 0°C to +70°C |
| Package Type | 38-Lead QFN (5mm x 7mm w/ EP) |
| Programmable Gain | 1 to 256 in 8 steps |
| Temperature Sensor Accuracy | 1/2°C resolution, 2°C absolute accuracy |
| Noise | 600 nV RMS |
| Integral Non-Linearity (INL) | 2 ppm |
| Offset Error | 1 ppm |
| Full-Scale Error | 15 ppm |
Key Features
- Easy Drive Technology: Eliminates dynamic input current errors and the shortcomings of on-chip buffering, allowing for the direct digitization of high-impedance sensors and rail-to-rail input signals.
- Programmable Gain: From 1 to 256 in 8 steps.
- High-Accuracy Temperature Sensor: Offers 1/2°C resolution and 2°C absolute accuracy.
- Integrated Oscillator: Provides internal clocking options.
- No Latency: Digital filter settles in a single cycle, even after a new channel is selected.
- Wide Common Mode Input Range: 0V to VCC, independent of the reference voltage.
- Low Noise and High Accuracy: 600 nV RMS noise, 2 ppm INL, 1 ppm offset error, and 15 ppm full-scale error.
- Single-Supply Operation: 2.7 V to 5.5 V.
- Compact Package: 38-Lead QFN (5mm x 7mm w/ EP).
Applications
The LTC2494IUHF#TRPBF is suitable for a variety of applications, including:
- Industrial Automation: For precise measurement and control in industrial environments.
- Medical Devices: For accurate and reliable data acquisition in medical equipment.
- Aerospace and Defense: For high-precision data conversion in aerospace and defense systems.
- Test and Measurement Equipment: For precise data acquisition and measurement in test and measurement instruments.
- Automotive Systems: For reliable and accurate data conversion in automotive applications.
Q & A
- What is the resolution of the LTC2494IUHF#TRPBF ADC?
The LTC2494IUHF#TRPBF has a 16-bit resolution.
- How many channels does the LTC2494IUHF#TRPBF support?
The device supports up to 8 differential or 16 single-ended channels.
- What is the sampling rate of the LTC2494IUHF#TRPBF?
The standard sampling rate is 15 S/s, but it can be configured for up to 30 kS/s.
- What is the input type of the LTC2494IUHF#TRPBF?
The input type is differential/single-ended or pseudo-differential/single-ended.
- What is the operating voltage range of the LTC2494IUHF#TRPBF?
The device operates on a single supply voltage from 2.7 V to 5.5 V.
- What is the temperature sensor accuracy of the LTC2494IUHF#TRPBF?
The integrated temperature sensor offers 1/2°C resolution and 2°C absolute accuracy.
- Does the LTC2494IUHF#TRPBF have programmable gain?
Yes, the gain is programmable from 1 to 256 in 8 steps.
- What is the noise performance of the LTC2494IUHF#TRPBF?
The device has a noise performance of 600 nV RMS.
- Is the LTC2494IUHF#TRPBF suitable for high-impedance sensors?
Yes, the Easy Drive technology allows for the direct digitization of high-impedance sensors with full accuracy.
- What is the package type of the LTC2494IUHF#TRPBF?
The device is packaged in a 38-Lead QFN (5mm x 7mm w/ EP).
