Overview
The LTC2499CUHF#PBF is a high-precision analog-to-digital converter (ADC) manufactured by Analog Devices Inc. This device is a 24-bit, 8-/16-channel ΔΣ ADC featuring 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 high-impedance sensors and rail-to-rail input signals with exceptional DC accuracy.
The LTC2499 includes a high-accuracy temperature sensor with 1/30th°C resolution and 2°C absolute accuracy, as well as an integrated oscillator. It supports both single-ended and differential input modes and features auto-calibration to continuously remove offset and drift associated with external amplifiers.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 24 bits |
| Number of Channels | 8 differential or 16 single-ended |
| Interface | 2-wire I²C |
| Input Range | 0V to VCC |
| Supply Voltage | 2.7V to 5.5V |
| Power Consumption | 0.8mW |
| Package | 38-Lead QFN (5mm x 7mm w/ EP) |
| Operating Temperature Range | 0°C to 70°C (LTC2499CUHF), -40°C to 85°C (LTC2499IUHF) |
| Temperature Sensor Resolution | 1/30th°C |
| Temperature Sensor Absolute Accuracy | 2°C |
Key Features
- No Latency ΔΣ ADC: Digital filter settles in a single cycle, even after a new channel is selected.
- Easy Drive Technology: Enables rail-to-rail inputs with zero differential input current, allowing direct digitization of high-impedance sensors.
- Integrated Temperature Sensor: Offers 1/30th°C resolution and 2°C absolute accuracy.
- Integrated Oscillator: Reduces the need for external components.
- Auto-Calibration: Continuously removes offset and drift associated with external amplifiers.
- Wide Common Mode Input Range: 0V to VCC, independent of the reference voltage.
- Compact Package: 38-Lead QFN (5mm x 7mm w/ EP).
Applications
- Industrial Automation: For precise measurement and control in industrial environments.
- Medical Devices: High-accuracy data acquisition in medical equipment.
- Aerospace and Defense: Reliable and precise data conversion in harsh environments.
- Automotive Systems: For sensor data acquisition and monitoring in automotive applications.
- Environmental Monitoring: Accurate measurement of environmental parameters such as temperature, pressure, and humidity.
Q & A
- What is the resolution of the LTC2499 ADC?
The LTC2499 is a 24-bit ADC.
- How many channels does the LTC2499 support?
The LTC2499 supports 8 differential or 16 single-ended channels.
- What interface does the LTC2499 use?
The LTC2499 uses a 2-wire I²C interface.
- What is the input range of the LTC2499?
The input range is 0V to VCC.
- What is the power consumption of the LTC2499?
The power consumption is 0.8mW.
- What is the package type of the LTC2499?
The package type is a 38-Lead QFN (5mm x 7mm w/ EP).
- What is the operating temperature range of the LTC2499?
The operating temperature range is 0°C to 70°C for the LTC2499CUHF and -40°C to 85°C for the LTC2499IUHF.
- Does the LTC2499 have an integrated temperature sensor?
Yes, the LTC2499 includes a high-accuracy temperature sensor with 1/30th°C resolution and 2°C absolute accuracy.
- What is the benefit of the Easy Drive technology in the LTC2499?
The Easy Drive technology enables rail-to-rail inputs with zero differential input current, allowing direct digitization of high-impedance sensors.
- Does the LTC2499 support auto-calibration?
Yes, the LTC2499 continuously removes offset and drift associated with external amplifiers through auto-calibration.
