LTC2992

RECOMMENDED FOR NEW DESIGNS

Dual Wide Range Power Monitor

Data Sheet (Rev. A) Product Selection Table
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Overview

  • Rail-to-Rail Input Range: 0V to 100V
  • Wide Input Supply Range: 2.7V to 100V
  • Measures Current, Voltage, and Power
  • Shunt Regulator for Supplies >100V
  • 8-/12-Bit ADCs with Less Than ±0.3% Total Unadjusted Error
  • Four General Purpose Inputs/Outputs Configurable as ADC Inputs
  • Continuous Scan and Snapshot Modes
  • Stores Minimum and Maximum Measurements
  • Alerts When Alarm Thresholds Exceeded
  • Shutdown Mode with IQ < 50μA
  • Split SDA Pin Eases Opto-Isolation
  • Available in 16-Lead 4mm × 3mm DFN and MSOP Packages
LTC2992
Dual Wide Range Power Monitor
LTC2992 Application Circuit LTC2992 Performance Graph LTC2992 Pin Configuration LTC2992 Pin Configuration LTC2992 Pin Configuration LTC2992 Pin Configuration
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Documentation

Data Sheet 1

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Software Resources

Device Drivers 1

Hardware Ecosystem

Parts Product Life Cycle Description
LTC2945
RECOMMENDED FOR NEW DESIGNS Wide Range I2C Power Monitor
LTC2946
RECOMMENDED FOR NEW DESIGNS Wide Range I2C Power, Charge and Energy Monitor
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Tools & Simulations

LTspice

Models for the following parts are available in LTspice:

  • LTC2992

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
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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.

eval board
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AD-PAARRAY3552R-SL

RF Front-end GaN Power Amplifier Biasing, Protection, and Control Reference Design

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Features and Benefits

  • Designed to cover full Tx signal chains with integrated MCU and user-friendly GUI for faster and easier integration
  • Supports fault event protection - overvoltage (OV), overcurrent (OC), and overtemperature (OT)
  • Supports ultrafast sub-µs GaN gate voltage switching ~ (<1 µs)
  • Supports ultrafast (<10 µs) fault event protection from detection up to GaN gate pinch-off
  • Wide range of gate bias voltages from -10 V to +10 V
  • Configurable power-up and power-down sequence

Product Details

The AD-PAARRAY3552R-SL reference design provides control, protection, and proper biasing sequence for GaN power amplifier (PA) arrays. The design incorporates the AD3553R high-speed, dual-channel, 16-bit DAC to support the ultrafast sub-µs voltage settling time of GaN gates.

Key fault events, including overvoltage, overcurrent, and overtemperature, are effectively managed by the LTC7000, a static switch driver responsible for system fault protection.

The on-board MAX32666 ultralow-power ARM® Cortex®-M4 microprocessor provides essential debug and programming features for a comprehensive software development experience with the system. The system's firmware is built on ADI's open-source no-OS framework and includes a user-friendly graphical interface (GUI) for evaluation. Updates are easily applied through an SWD UART bootloader, streamlining prototyping.

The system can be powered by an external +48 V supply, requiring high current capabilities.

APPLICATIONS

  • 5G massive MIMOs
  • Macro base stations
Specifications
Fault Events
Fault Default Limit
Overvoltage +55 V
Overcurrent 3.5 A
Overtemperature 75°C
Output Ports
Port Name No. of ports
GaN gate ports 6
+48 V Gan drain ports 4
+5 V ports 5
Enable ports 2
Power Supply
External +48 V DC at 5 A
Operating Conditions
Temperature Range 45°C to +75°C

DC2561A
LTC2992 Demo Board | Dual Wide Range Power Monitor
DC2561A Evaluation Board DC2561A Evaluation Board - Top View DC2561A Evaluation Board - Bottom View DC2561A
AD-PAARRAY3552R-SL
RF Front-end GaN Power Amplifier Biasing, Protection, and Control Reference Design
AD-PAARRAY3552R-SL Block Diagram AD-PAARRAY3552R-SL Board Photo Angle View AD-PAARRAY3552R-SL Board Photo Top View AD-PAARRAY3552R-SL Board Photo Bottom View

Latest Discussions

1 Years Ago
multiple ltc2992 devices with isolation
1 Years Ago
Doubts regarding negative voltajes/currents in LTC2992
2 Years Ago
I2C register pointer set failing
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