Overview
The LTC2487CDE#TRPBF is a 16-bit, 2-/4-channel Delta-Sigma (ΔΣ) Analog-to-Digital Converter (ADC) produced by Analog Devices Inc. This device features Easy Drive technology, a 2-wire I2C interface, and a patented sampling scheme that eliminates dynamic input current errors. It is designed to directly digitize high impedance sensors and rail-to-rail input signals with exceptional DC accuracy. The LTC2487 also includes programmable gain, a high accuracy temperature sensor, and an integrated oscillator, making it versatile for various measurement applications.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Resolution | 0.1V ≤ VREF ≤ VCC, –FS ≤ VIN ≤ +FS | - | 16 Bits | - | - |
| Integral Nonlinearity | 5V ≤ VCC ≤ 5.5V, VREF = 5V, VIN(CM) = 2.5V | - | - | ±2.7 | LSB |
| Noise | - | - | 600nV RMS | - | - |
| Programmable Gain | - | 1 | - | 256 | - |
| Temperature Sensor Resolution | - | - | 1/2°C | - | - |
| Temperature Sensor Absolute Accuracy | - | - | ±2°C | - | - |
| Common Mode Input Range | - | 0V | - | VCC | - |
| Operating Temperature Range | - | -40°C | - | 85°C | - |
| Package | - | - | - | 14-Lead DFN (4mm x 3mm w/ EP) | - |
Key Features
- Easy Drive Technology: Enables rail-to-rail inputs with zero differential input current, allowing direct digitization of high impedance sensors.
- 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: For internal clocking.
- 2-Wire I2C Interface: With 9 addresses plus one global address for synchronization.
- Auto Calibration: Continuously removes offset and drift associated with external amplifiers.
- Wide Common Mode Input Range: From 0V to VCC, independent of the reference voltage.
Applications
- Industrial Automation: For precise measurement and control in industrial environments.
- Medical Devices: Where high accuracy and reliability are crucial.
- Aerospace and Defense: For applications requiring robust and accurate data conversion.
- Automotive Systems: For sensor data acquisition and processing.
- Environmental Monitoring: For measuring various environmental parameters with high precision.
Q & A
- Q: What is the resolution of the LTC2487CDE#TRPBF ADC?
A: The LTC2487CDE#TRPBF has a 16-bit resolution. - Q: What is the programmable gain range of the LTC2487CDE#TRPBF?
A: The programmable gain ranges from 1 to 256 in 8 steps. - Q: What is the accuracy of the integrated temperature sensor?
A: The integrated temperature sensor offers 1/2°C resolution and 2°C absolute accuracy. - Q: What interface does the LTC2487CDE#TRPBF use for communication?
A: The LTC2487CDE#TRPBF uses a 2-wire I2C interface. - Q: Can the LTC2487CDE#TRPBF handle high impedance sensors?
A: Yes, the LTC2487CDE#TRPBF can directly digitize high impedance sensors with full accuracy due to its Easy Drive technology. - Q: What is the operating temperature range of the LTC2487CDE#TRPBF?
A: The operating temperature range is from -40°C to 85°C. - Q: What package type is the LTC2487CDE#TRPBF available in?
A: The LTC2487CDE#TRPBF is available in a 14-Lead DFN (4mm x 3mm w/ EP) package. - Q: Does the LTC2487CDE#TRPBF support single-ended and differential inputs?
A: Yes, the LTC2487CDE#TRPBF supports both single-ended and differential inputs. - Q: How does the auto calibration feature work?
A: The auto calibration feature continuously removes the offset and drift associated with external amplifiers. - Q: What is the common mode input range of the LTC2487CDE#TRPBF?
A: The common mode input range is from 0V to VCC, independent of the reference voltage.
