Overview
The LTC2991IMS#TRPBF, produced by Analog Devices Inc., is a highly versatile octal I2C voltage, current, and temperature monitor. This integrated circuit is designed to monitor system temperatures, voltages, and currents through an I2C serial interface. It is particularly useful in applications requiring precise and simultaneous monitoring of multiple parameters. The device supports single or repeated measurements and can be configured to measure various combinations of voltage, current, and temperature.
Key Specifications
| Parameter | Conditions | Min | Max | Units | |
|---|---|---|---|---|---|
| VCC Input Supply Range | 2.9 | 5.5 | 5.5 | V | |
| ICC Input Supply Current During Conversion, I2C Inactive | 1.1 | 1.5 | 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 | |
| TINTERNAL(TUE) Internal Temperature Total Unadjusted Error | ±1 | ±3.5 | °C | ||
| TRMT(TUE) Remote Diode Temperature Total Unadjusted Error | η = 1.004 | ±0.7 | ±1.5 | °C | |
| VCC(TUE) VCC Voltage Total Unadjusted Error | 2.9V ≤ 5.5V | ±0.05 | ±0.25 | % | |
| VN(TUE) V1 Through V8 Total Unadjusted Error | 0V ≤ 4.9V | ±0.05 | ±0.25 | % | |
| VDIFF(TUE) Differential Voltage Total Unadjusted Error | –300mV ≤ VD ≤ 300mV | ±0.1 | ±0.75 | % | |
| VDIFF(MAX) Full-Scale Differential Voltage | –312.5 | 312.5 | mV | ||
| fSCL(MAX) Maximum SCL Clock Frequency | 400 | kHz |
Key Features
- Octal Monitoring Capability: Monitors eight channels for voltage, current, and temperature.
- I2C Interface: Communicates through an I2C serial interface, allowing for easy integration with microcontrollers.
- Internal and Remote Temperature Measurement: Uses internal ADC and remote diode temperature sensors, supporting discrete NPN or embedded PNP devices.
- High Measurement Accuracy: Offers high accuracy for voltage, current, and temperature measurements with minimal unadjusted errors.
- Low Power Consumption: Features low supply current during conversion and shutdown modes.
- Flexible Configuration: Supports single or repeated measurements and various measurement combinations.
- Compact Package: Available in a 16-lead plastic MSOP package, suitable for space-constrained applications.
Applications
- Server and Data Center Monitoring: Ideal for monitoring temperatures, voltages, and currents in server racks and data centers.
- Industrial Automation: Used in industrial control systems to monitor various parameters for equipment health and performance.
- Aerospace and Defense: Suitable for monitoring critical parameters in aerospace and defense applications where reliability and accuracy are paramount.
- Automotive Systems: Applied in automotive systems for monitoring battery health, temperature, and other critical parameters.
- Medical Devices: Used in medical equipment to ensure precise monitoring of temperatures, voltages, and currents.
Q & A
- What is the primary function of the LTC2991IMS#TRPBF?
The primary function of the LTC2991IMS#TRPBF is to monitor system temperatures, voltages, and currents through an I2C serial interface.
- What is the operating temperature range of the LTC2991IMS#TRPBF?
The operating temperature range of the LTC2991IMS#TRPBF is –40°C to 85°C.
- How many channels can the LTC2991IMS#TRPBF monitor simultaneously?
The LTC2991IMS#TRPBF can monitor eight channels simultaneously for voltage, current, and temperature.
- What type of interface does the LTC2991IMS#TRPBF use for communication?
The LTC2991IMS#TRPBF uses an I2C serial interface for communication.
- What is the maximum SCL clock frequency for the I2C interface?
The maximum SCL clock frequency for the I2C interface is 400 kHz.
- How accurate is the internal temperature measurement of the LTC2991IMS#TRPBF?
The internal temperature measurement has a total unadjusted error of ±1°C to ±3.5°C.
- Can the LTC2991IMS#TRPBF measure remote temperatures?
Yes, the LTC2991IMS#TRPBF can measure remote temperatures using transistors as temperature sensors.
- What is the typical supply current during conversion for the LTC2991IMS#TRPBF?
The typical supply current during conversion is 1.5 mA.
- What is the package type of the LTC2991IMS#TRPBF?
The LTC2991IMS#TRPBF is available in a 16-lead plastic MSOP package.
- Is the LTC2991IMS#TRPBF suitable for high-reliability applications?
Yes, the LTC2991IMS#TRPBF is suitable for high-reliability applications such as aerospace, defense, and medical devices due to its high accuracy and reliability.
