Overview
The LTC2493IDE#TRPBF is a 24-bit, 2-/4-channel Delta-Sigma Analog-to-Digital Converter (ADC) manufactured by Analog Devices Inc. This device is renowned for its Easy Drive technology and 2-wire I2C interface. It features a patented sampling scheme that eliminates dynamic input current errors, allowing for the direct digitization of high impedance sensors and rail-to-rail input signals with exceptional DC accuracy. The LTC2493 also includes a high accuracy temperature sensor and an integrated oscillator, making it versatile for various measurement applications.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 24 bits |
| Number of Channels | 2 differential or 4 single-ended |
| Input Type | Differential or single-ended |
| Interface | 2-wire I2C |
| Input Current Cancellation | Automatic cancellation of differential input current |
| Common Mode Input Range | 0V to VCC |
| Noise | 600 nV RMS |
| Integral Nonlinearity (INL) | 2 ppm |
| Offset Error | 1 ppm |
| Full-Scale Error | 15 ppm |
| Temperature Sensor Resolution | 1/30th°C |
| Temperature Sensor Absolute Accuracy | 2°C |
| Supply Voltage | 2.7V to 5.5V |
| Power Consumption | 0.8 mW at 7.5 Hz |
| Package | 14-Lead DFN (4mm x 3mm w/ EP) |
Key Features
- Easy Drive Technology: Enables rail-to-rail input signals with zero differential input current, eliminating dynamic input current errors and the shortcomings of on-chip buffering.
- No Latency: Digital filter settles in a single cycle, even after a new channel is selected.
- High Accuracy Temperature Sensor: Offers 1/30th°C resolution and 2°C absolute accuracy.
- Integrated Oscillator: Allows for internal clocking and synchronization.
- Wide Common Mode Input Range: 0V to VCC, independent of the reference voltage.
- Auto-Calibration: Continuously removes offset and drift associated with external amplifiers.
- Programmable 50Hz, 60Hz or Simultaneous 50Hz/60Hz Rejection Mode: Enhances noise rejection in various power line environments.
Applications
The LTC2493IDE#TRPBF is suitable for a variety of applications, including:
- Industrial Automation: For precise measurement and control in industrial environments.
- Medical Devices: High accuracy and low noise make it ideal for medical instrumentation.
- Environmental Monitoring: For measuring temperature, pressure, and other environmental parameters.
- Aerospace and Defense: Where high precision and reliability are critical.
- Automotive Systems: For sensor interfaces and data acquisition in automotive applications.
Q & A
- What is the resolution of the LTC2493IDE#TRPBF ADC?
The LTC2493IDE#TRPBF has a 24-bit resolution. - How many channels does the LTC2493IDE#TRPBF support?
The device supports up to 2 differential or 4 single-ended channels. - What is the interface type of the LTC2493IDE#TRPBF?
The device uses a 2-wire I2C interface. - What is the common mode input range of the LTC2493IDE#TRPBF?
The common mode input range is 0V to VCC. - Does the LTC2493IDE#TRPBF have an integrated temperature sensor?
Yes, it includes a high accuracy temperature sensor with 1/30th°C resolution and 2°C absolute accuracy. - What is the power consumption of the LTC2493IDE#TRPBF at 7.5 Hz?
The power consumption is 0.8 mW at 7.5 Hz. - What is the package type of the LTC2493IDE#TRPBF?
The device is packaged in a 14-Lead DFN (4mm x 3mm w/ EP). - Can the LTC2493IDE#TRPBF reject power line noise?
Yes, it has programmable 50Hz, 60Hz or simultaneous 50Hz/60Hz rejection mode. - Is the LTC2493IDE#TRPBF suitable for high impedance sensors?
Yes, it can directly digitize high impedance sensors with full accuracy. - Does the LTC2493IDE#TRPBF support external amplifiers?
Yes, access to the multiplexer output enables optional external amplifiers to be shared between all analog inputs.
