Overview
The LTC2481CDD#PBF is a 16-bit, no-latency ΔΣ (delta-sigma) analog-to-digital converter (ADC) produced by Analog Devices Inc. This device integrates patented Easy Drive technology and an I²C digital interface, enabling the elimination of dynamic input current errors and the shortcomings of on-chip buffering. This allows for the direct digitization of input signals with large external source impedances while maintaining exceptional DC accuracy.
The LTC2481 includes on-chip programmable gain and an oscillator, and it can be configured to provide a programmable gain from 1 to 256 in 8 steps. It also features the ability to reject line frequencies (50Hz, 60Hz, or simultaneous 50Hz/60Hz) and a 2x speed-up mode. The device supports a wide common mode input range (0V to VCC) and can operate with a reference voltage as low as 100mV or tied directly to VCC.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 16 bits |
| Converter Type | ΔΣ (Delta-Sigma) |
| Input Range | 0V to VCC |
| Programmable Gain | 1 to 256 in 8 steps |
| Interface | I²C |
| Package | 10-Lead DFN (3mm x 3mm w/ EP) |
| Operating Temperature | -40°C to 85°C (Commercial), -40°C to 125°C (Industrial), -40°C to 150°C (Military) |
| Reference Voltage | As low as 100mV or tied directly to VCC |
Key Features
- Patented Easy Drive technology for automatic cancellation of differential input current, allowing large external source impedances and input signals to be directly digitized.
- On-chip programmable gain from 1 to 256 in 8 steps.
- On-chip trimmed oscillator, eliminating the need for external crystals or oscillators.
- Continuous, transparent offset and full-scale calibration for absolute accuracy and low drift.
- Ability to reject line frequencies (50Hz, 60Hz, or simultaneous 50Hz/60Hz) and a 2x speed-up mode.
- Wide common mode input range (0V to VCC) independent of the reference voltage.
Applications
The LTC2481CDD#PBF is suitable for various applications requiring high accuracy and flexibility in analog-to-digital conversion. These include:
- Industrial automation and control systems.
- Medical devices requiring precise signal conversion.
- Aerospace and defense applications where high reliability is crucial.
- Automotive systems needing robust and accurate signal processing.
- Test and measurement equipment.
Q & A
- What is the resolution of the LTC2481CDD#PBF ADC?
The LTC2481CDD#PBF has a resolution of 16 bits.
- What type of converter is the LTC2481CDD#PBF?
The LTC2481CDD#PBF is a ΔΣ (delta-sigma) analog-to-digital converter.
- What is the input range of the LTC2481CDD#PBF?
The input range is from 0V to VCC.
- Does the LTC2481CDD#PBF have programmable gain?
- What interface does the LTC2481CDD#PBF use?
The LTC2481CDD#PBF uses an I²C interface.
- What is the package type of the LTC2481CDD#PBF?
The package type is a 10-Lead DFN (3mm x 3mm w/ EP).
- What are the operating temperature ranges for the LTC2481CDD#PBF?
The operating temperature ranges are -40°C to 85°C (Commercial), -40°C to 125°C (Industrial), and -40°C to 150°C (Military).
- Can the reference voltage be customized?
- Does the LTC2481CDD#PBF require external crystals or oscillators?
No, the LTC2481CDD#PBF includes an on-chip trimmed oscillator, eliminating the need for external crystals or oscillators.
- How does the LTC2481CDD#PBF maintain accuracy and low drift?
The LTC2481CDD#PBF maintains absolute accuracy and low drift through continuous, transparent offset and full-scale calibration.
