MAX6516

PRODUCTION

Low-Cost, 2.7V to 5.5V, Analog Temperature Sensor Switches in a SOT23

Low-Cost, 2.7V to 5.5V, Analog Temperature-Sensor Switches in a SOT23 Assert a Logic Signal when Their Die Temperature Crosses a Factory-Programmed Threshold

Data Sheet (Rev. 1) Product Selection Table
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Overview

  • High Accuracy ±1.5°C (max) Over -15°C to +65°C Temperature Range
  • Low Power Consumption—22µA Typical Current
  • Factory-Programmed Thresholds from -45°C to +115°C in 10°C Increments
  • Analog Output to Allow Board-Level Testing
  • Open-Drain or Push-Pull Outputs
  • Pin-Selectable 2°C or 10°C Hysteresis

The MAX6516–MAX6519 low-cost, fully integrated temperature switches assert a logic signal when their die temperature crosses a factory-programmed threshold. Operating from a 2.7V to 5.5V supply, these devices feature a fixed voltage reference, an analog temperature sensor, and a comparator. They are available with factory-trimmed temperature trip thresholds from -45°C to +115°C in 10°C increments, and are accurate to ±0.5°C (typ). These devices require no external components and typically consume 22µA of supply current. Hysteresis is pin selectable at 2°C or 10°C.

The MAX6516–MAX6519 are offered with hot-temperature thresholds (+35°C to +115°C), asserting when the temperature is above the threshold, or with cold-temperature thresholds (-45°C to +15°C), asserting when the temperature is below the threshold.

These devices provide an analog output proportional to temperature and are stable with any capacitive load up to 1000pF. The MAX6516–MAX6519 can be used over a range of -55°C to +125°C with a supply voltage of 2.7V to 5.5V. For applications sensing temperature down to -45°C, a supply voltage above 4.5V is required.

The MAX6516 and MAX6518 have an active-high, push-pull output. The MAX6517 and MAX6519 have an active-low, open-drain output. These devices are available in a space-saving 5-pin SOT23 package.

Applications

  • Fan Control
  • Notebook, Desktop PCs
  • Over/Undertemperature Protection
  • RAID
  • Servers
  • Temperature Alarms
  • Temperature Control
  • Test Equipment
MAX6516
Low-Cost, 2.7V to 5.5V, Analog Temperature Sensor Switches in a SOT23
MAX6516, MAX6517, MAX6518, MAX6519: Typical Operating Circuit
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Documentation

Data Sheet 1

Technical Articles 1

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
Temperature Sensors 4
MAX6501
PRODUCTION Low-Cost, +2.7V to +5.5V, Micropower Temperature Switches in SOT23
MAX6502
PRODUCTION Low-Cost, +2.7V to +5.5V, Micropower Temperature Switches in SOT23
MAX6503
PRODUCTION Low-Cost, +2.7V to +5.5V, Micropower Temperature Switches in SOT23
MAX6504
PRODUCTION Low-Cost, +2.7V to +5.5V, Micropower Temperature Switches in SOT23
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Evaluation Kits

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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

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

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