Overview
The LTC2487CDE#PBF, produced by Analog Devices Inc., is a highly advanced 16-bit, 2-/4-channel delta-sigma (ΔΣ) analog-to-digital converter (ADC). This device features Easy Drive technology and a 2-wire I2C interface, making it ideal for applications requiring high accuracy and flexibility. The LTC2487 is designed to eliminate dynamic input current errors and the shortcomings of on-chip buffering, allowing it to directly digitize high impedance sensors and rail-to-rail input signals with exceptional DC accuracy.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Resolution | 16-bit | |
| Number of Channels | 2 differential or 4 single-ended | |
| Programmable Gain | 1 to 256 in 8 steps | |
| Input Range | 0V to VCC | V |
| Noise | 600nV RMS | V |
| Temperature Sensor Resolution | 1/2°C | °C |
| Temperature Sensor Absolute Accuracy | 2°C | °C |
| Interface | 2-wire I2C | |
| 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.
- Wide Common Mode Input Range: 0V to VCC, independent of the reference voltage.
- Auto Calibration: Continuously removes offset and drift associated with external amplifiers.
- I2C Interface: 2-wire interface with 9 addresses plus one global address for synchronization.
Applications
- High Impedance Sensor Measurements: Directly digitizes signals from high impedance sensors with full accuracy.
- Industrial Automation: Suitable for applications requiring precise analog-to-digital conversion.
- Medical Devices: Ideal for medical equipment that needs accurate temperature and analog signal measurements.
- Aerospace and Defense: Used in various aerospace and defense applications where high precision and reliability are critical.
Q & A
- What is the resolution of the LTC2487CDE#PBF ADC?
The LTC2487CDE#PBF has a 16-bit resolution. - How many channels does the LTC2487CDE#PBF support?
The device supports up to 2 differential or 4 single-ended channels. - What is the programmable gain range of the LTC2487CDE#PBF?
The programmable gain ranges from 1 to 256 in 8 steps. - What is the input range of the LTC2487CDE#PBF?
The input range is from 0V to VCC. - Does the LTC2487CDE#PBF have an integrated temperature sensor?
Yes, it includes a high accuracy temperature sensor with 1/2°C resolution and 2°C absolute accuracy. - What type of interface does the LTC2487CDE#PBF use?
The device uses a 2-wire I2C interface. - What is the package type of the LTC2487CDE#PBF?
The package type is a 14-Lead DFN (4mm x 3mm w/ EP). - Can the LTC2487CDE#PBF directly digitize high impedance sensors?
Yes, it can directly digitize high impedance sensors with full accuracy using Easy Drive technology. - Does the LTC2487CDE#PBF support auto calibration for external amplifiers?
Yes, it continuously removes the offset and drift associated with external amplifiers through auto calibration. - What is the noise level of the LTC2487CDE#PBF?
The noise level is 600nV RMS.
