Overview
The LTC2991IMS#PBF, produced by Analog Devices Inc., is an octal I2C voltage, current, and temperature monitor. This device is designed to monitor system temperatures, voltages, and currents through its eight individual monitors. It utilizes an I2C serial interface for communication and can be configured to measure various combinations of these parameters. The LTC2991 is particularly useful in systems that require precise monitoring of voltage, current, and temperature, and it offers flexibility with its selectable address and configurable functionality.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| VCC Input Supply Range | 2.9 | - | 5.5 | V |
| ICC Input Supply Current During Conversion, I2C Inactive | 1.1 | 1.5 | - | mA |
| ISD Input Supply Current Shutdown Mode, I2C Inactive | 1 | - | 6 | µA |
| VCC(UVL) Input Supply Undervoltage Lockout | 1.3 | 2.0 | 2.6 | V |
| fSCL(MAX) Maximum SCL Clock Frequency | - | - | 400 | kHz |
| tLOW Minimum SCL Low Period | 1.3 | - | - | µs |
| tHIGH Minimum SCL High Period | 0.6 | - | - | µs |
| Package | - | - | 16-TFSOP (0.118, 3.00mm Width) | - |
| Number of Pins | - | - | 16 | - |
| Operating Temperature Range | -40 | - | 85 | °C |
Key Features
- Octal Monitoring Capability: The LTC2991 can monitor eight channels individually for voltage, current, and temperature measurements.
- I2C Interface: Communication is facilitated through an I2C serial interface, allowing for easy integration into various systems.
- Internal Temperature and VCC Measurement: In addition to external measurements, the device can measure internal temperature and VCC.
- Differential Measurements: The monitors can be paired for differential measurements of current sense resistors or temperature sensing transistors.
- High Accuracy: Features a 10ppm internal reference, minimizing the need for additional supporting components and ensuring high measurement accuracy.
- Configurable Functionality: Selectable address and configurable functionality provide flexibility for use in various systems.
- Low Power Consumption: Low supply current during conversion and shutdown modes, making it suitable for power-sensitive applications.
Applications
- System Monitoring: Ideal for monitoring system temperatures, voltages, and currents in a variety of electronic systems.
- Remote Temperature Sensing: Can use external transistors as temperature sensors, allowing for remote temperature measurements.
- Industrial Automation: Suitable for use in industrial automation systems where precise monitoring of voltage, current, and temperature is crucial.
- Embedded Systems: Can be integrated into embedded systems such as microprocessors or FPGAs for comprehensive monitoring.
- Power Management Systems: Useful in power management systems where real-time monitoring of voltage and current is essential.
Q & A
- What is the primary function of the LTC2991?
The primary function of the LTC2991 is to monitor system temperatures, voltages, and currents through its eight individual monitors.
- What type of interface does the LTC2991 use for communication?
The LTC2991 uses an I2C serial interface for communication.
- What is the operating temperature range of the LTC2991?
The operating temperature range of the LTC2991 is from -40°C to 85°C.
- What is the package type of the LTC2991IMS#PBF?
The package type of the LTC2991IMS#PBF is 16-TFSOP (0.118, 3.00mm Width).
- Can the LTC2991 measure internal temperature and VCC?
- What is the maximum SCL clock frequency for the LTC2991?
- Does the LTC2991 support differential measurements?
- What is the supply voltage range for the LTC2991?
- Is the LTC2991 RoHS compliant?
- Can the LTC2991 be used in industrial automation systems?
