LTC2991

RECOMMENDED FOR NEW DESIGNS

Octal I2C Voltage, Current, and Temperature Monitor

Data Sheet Product Selection Table
Part Models
4
1ku List Price
Starting From $5.37
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Part Details

  • Measures Voltage, Current, Temperature
  • Measures Four Remote Diode Temperatures
  • 0.7°C (Typ) Accuracy, 0.06°C Resolution
  • 1°C (Typ) Internal Temperature Sensor
  • Series Resistance Cancellation
  • 14-Bit ADC Measures Voltage/Current
  • PWM Temperature Output
  • 3V to 5.5V Supply Operating Voltage
  • Eight Selectable Addresses
  • Internal 10ppm/°C Voltage Reference
  • V1 to V8 Inputs ESD Rated to 6kV HBM
  • 16-Lead MSOP Package
LTC2991
Octal I2C Voltage, Current, and Temperature Monitor
Temperature Total Unadjusted Error Product Package 1
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 1

Application Note 2

Technical Articles 2

Data Sheet

This is the most up-to-date revision of the Data Sheet.

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Software Resources

Device Drivers 1

Hardware Ecosystem

Parts Product Life Cycle Description
Current Sense Amplifiers 2
LTC2990
RECOMMENDED FOR NEW DESIGNS Quad I2C Voltage, Current and Temperature Monitor
LTC6102
PRODUCTION Precision Zero Drift Current Sense Amplifier
I²C Isolators 1
LTM2883
PRODUCTION SPI/Digital or I2C μModule Isolator with Adjustable ±12.5V and 5V Regulated Power
Serial Bus Buffers, Extenders, and Accelerators 2
LTC4311
PRODUCTION Low Voltage I2C/SMBus Accelerator
LTC4317
PRODUCTION Dual I2C/SMBus Address Translator
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Tools & Simulations

Linduino 3

LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

Evaluation Kits

eval board
schematic 1
schematic 2
schematic 3
schematic 4
schematic 5
DC1785B

LTC2991 Demo board | I2C Temperature, Voltage, and Current Monitor (requires DC590 or DC2026)

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Product Details

Demonstration circuit 1785B features the LTC2991, a high performance temperature, voltage and current monitor that uses an I2C interface for communication. It offers sub-millivolt voltage resolution, 1% current measurement and 1°C temperature accuracy.


 


eval board
schematic 6
schematic 7
schematic 8
schematic 9
DC2561A

LTC2992 Demo Board | Dual Wide Range Power Monitor

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Product Details

Demonstration Circuit 2561A features the LTC2992, a rail-to-rail system monitor that measures current, voltage, and power of two supplies. It features an operating range of 2.7V to 100V and includes a shunt regulator for supplies above 100V. The voltage measurement range of 0V to 100V is independent of the input supply. Two ADCs simultaneously measure each supply's current. A third ADC monitors the input voltages and four auxiliary external voltages. Each supply's current and power is added for total system consumption. Minimum and maximum values are stored and an over range alert with programmable thresholds minimizes the need for software polling. Data is reported via a standard l2C interface. Shutdown mode reduces power consumption to 25μA typically.
DC1785B
LTC2991 Demo board | I2C Temperature, Voltage, and Current Monitor (requires DC590 or DC2026)
DC1785B Demo Board DC1785B Demo Board DC1785B Demo Board DC1785B Demo Board DC1785B - Schematic
DC2561A
LTC2992 Demo Board | Dual Wide Range Power Monitor
DC2561A Evaluation Board DC2561A Evaluation Board - Top View DC2561A Evaluation Board - Bottom View DC2561A

Latest Discussions

1 Years Ago
RE: connecting LTM4657 TSENSE+ & TSENSE- to LTC2991 to monitor temperature
2 Years Ago
RE: Not sure about the description of table1 in ltc2991
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