Overview
The LTC2493IDE#PBF is a high-precision analog-to-digital converter (ADC) produced by Analog Devices Inc. This device is a 24-bit, 2-/4-channel ΔΣ (delta-sigma) ADC that features Easy Drive technology and a 2-wire I2C interface. It is designed to eliminate dynamic input current errors and the shortcomings of on-chip buffering, allowing for the direct digitization of large external source impedances and rail-to-rail input signals while maintaining exceptional DC accuracy.
Key Specifications
| Parameter | Specification |
|---|---|
| Resolution | 24 bits |
| Number of Channels | 2-/4-channel (single-ended or differential) |
| Conversion Rate | 15 samples per second (sps) |
| Interface | 2-wire I2C |
| Input Range | 0V to VCC (common mode input range) |
| Temperature Sensor | Integrated, 1/30th°C resolution, 2°C absolute accuracy |
| Package | 14-Lead DFN (4mm x 3mm w/ EP) |
| Voltage Supply | Up to 5.5V |
Key Features
- Easy Drive technology for automatic cancellation of differential input current, allowing large external source impedances and rail-to-rail input signals.
- No latency ΔΣ ADC with a patented sampling scheme.
- Integrated high accuracy temperature sensor with 1/30th°C resolution and 2°C absolute accuracy.
- Integrated oscillator.
- Auto-calibration continuously removes offset and drift associated with external amplifiers.
- 2-wire I2C interface for communication.
Applications
The LTC2493IDE#PBF is suitable for a variety of precision measurement applications, including industrial process control, medical devices, and high-accuracy data acquisition systems. Its ability to handle large external source impedances and its integrated temperature sensor make it particularly useful in environments where precise temperature and analog signal measurements are critical.
Q & A
- What is the resolution of the LTC2493IDE#PBF ADC?
The LTC2493IDE#PBF has a resolution of 24 bits. - How many channels does the LTC2493IDE#PBF support?
The device supports 2-/4-channel configurations (single-ended or differential). - What is the conversion rate of the LTC2493IDE#PBF?
The conversion rate is 15 samples per second (sps). - What type of interface does the LTC2493IDE#PBF use?
The device uses a 2-wire I2C interface. - What is the input range of the LTC2493IDE#PBF?
The input range is from 0V to VCC (common mode input range). - Does the LTC2493IDE#PBF have an integrated temperature sensor?
Yes, it includes an integrated temperature sensor with 1/30th°C resolution and 2°C absolute accuracy. - What is the package type of the LTC2493IDE#PBF?
The package type is a 14-Lead DFN (4mm x 3mm w/ EP). - What is the maximum voltage supply for the LTC2493IDE#PBF?
The maximum voltage supply is up to 5.5V. - What is the purpose of the Easy Drive technology in the LTC2493IDE#PBF?
The Easy Drive technology automatically cancels differential input current, allowing for the direct digitization of large external source impedances and rail-to-rail input signals. - Can the LTC2493IDE#PBF be used with external amplifiers?
Yes, the device allows optional external amplifiers to be shared between all analog inputs, and auto-calibration continuously removes their associated offset and drift.
