Overview
The LTC2494CUHF#TRPBF is a 16-bit, 8-/16-channel ΔΣ analog-to-digital converter (ADC) produced by Analog Devices Inc. This device features Easy Drive technology, which eliminates dynamic input current errors and the shortcomings of on-chip buffering through automatic cancellation of differential input current. This allows for the direct digitization of rail-to-rail input signals with exceptional DC accuracy, even with large external source impedances. The LTC2494 includes programmable gain, a high-accuracy temperature sensor, and an integrated oscillator, making it versatile for various measurement applications.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 16 bits |
| Number of Channels | 8 differential / 16 single-ended |
| Sampling Rate | 15 S/s |
| Input Type | 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 | -40°C to +85°C |
| Package Type | 38-Lead QFN (5mm x 7mm w/ EP) |
| Interface Type | SPI |
| Programmable Gain | 1 to 256 in 8 steps |
| Temperature Sensor Accuracy | 1/2°C resolution, 2°C absolute accuracy |
Key Features
- Easy Drive technology for automatic cancellation of differential input current, allowing large external source impedances and rail-to-rail input signals.
- Programmable gain from 1 to 256 in 8 steps.
- Integrated high-accuracy temperature sensor with 1/2°C resolution and 2°C absolute accuracy.
- Integrated oscillator.
- No latency ΔΣ ADC architecture.
- Wide common mode input range (0V to VCC) independent of the reference voltage.
Applications
The LTC2494 is suitable for a variety of applications requiring high accuracy and flexibility in signal measurement. These include industrial automation, medical devices, test and measurement equipment, and any system that requires precise analog-to-digital conversion with programmable gain and temperature sensing capabilities.
Q & A
- What is the resolution of the LTC2494 ADC?
The LTC2494 has a resolution of 16 bits. - How many channels does the LTC2494 support?
The LTC2494 supports 8 differential or 16 single-ended channels. - What is the sampling rate of the LTC2494?
The sampling rate of the LTC2494 is 15 samples per second (S/s). - What is the input type of the LTC2494?
The LTC2494 supports differential and single-ended inputs. - What is the operating temperature range of the LTC2494?
The operating temperature range is -40°C to +85°C. - What package type is the LTC2494 available in?
The LTC2494 is available in a 38-Lead QFN (5mm x 7mm w/ EP) package. - What interface type does the LTC2494 use?
The LTC2494 uses an SPI interface. - Does the LTC2494 have programmable gain?
Yes, the LTC2494 has programmable gain from 1 to 256 in 8 steps. - What is the accuracy of the integrated temperature sensor?
The integrated temperature sensor has a resolution of 1/2°C and an absolute accuracy of 2°C. - What are some typical applications of the LTC2494?
The LTC2494 is used in industrial automation, medical devices, test and measurement equipment, and other systems requiring precise analog-to-digital conversion.
