MAX1618
NOT RECOMMENDED FOR NEW DESIGNSRemote Temperature Sensor with SMBus Serial Interface
Industry's Smallest Remote Diode Temperature Sensor - Measurement and Protection in a uMAX-10
- Part Models
- 2
- 1ku List Price
- price unavailable
Part Details
- Single Channel: Measures Remote CPU Temperature
- No Calibration Required
- SMBus 2-Wire Serial Interface
- Programmable Under/Overtemperature Alarms
- Overtemperature Output for Fan Control (Thermostat Mode)
- Supports SMBus Alert Response Accuracy
- ±3°C (+60°C to +100°C)
- ±5°C (-55°C to +120°C)
- 3°A (typ) Standby Supply Current
- 900°A (max) Supply Current in Autoconvert Mode
- +3V to +5.5V Supply Range
- Small 10-Pin °MAX Package
The MAX1618 precise digital thermometer reports the temperature of a remote sensor. The remote sensor is a diode-connected transistor-typically a low-cost, easily mounted 2N3904 NPN type-that replaces conventional thermistors or thermocouples. Remote accuracy is ±3°C for multiple transistor manufacturers, with no calibration needed. The MAX1618 can also measure the die temperature of other ICs, such as microprocessors, that contain an on-chip, diode-connected transistor.
The 2-wire serial interface accepts standard System Management Bus (SMBus™) Write Byte, Read Byte, Send Byte, and Receive Byte commands to program the alarm thresholds and to read temperature data. The data format is 7 bits plus sign, with each bit corresponding to 1°C, in two's complement format. Measurements can be done automatically and autonomously, with the 16Hz conversion rate or programmed to operate in a single-shot mode.
The thermostat mode configures the active-low ALERT output as an interrupt or as a temperature reset that remains active only while the temperature is above the maximum temperature limit or below the minimum temperature limit. The active-low ALERT output polarity in thermostat mode can be configured for active high or active low. Fan control is implemented using this active-low ALERT output.
The MAX1618 is available in a small (1.1mm high) 10-pin µMAX package.
Applications
- Central Office Telecom Equipment
- Computers: Desktop, Workstation, Server
- Industrial Controls
- LAN Servers
- Multichip Modules
- Smart Battery Packs/Chargers
- Test and Measurement Equipment
Documentation
Reliability Data 1
Technical Articles 1
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Complete documentation is available upon completion of a Non-Disclosure Agreement (NDA).
Request an NDAADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| MAX1618MUB+ | 10-MINI_SO-N/A | ||
| MAX1618MUB+T | 10-MINI_SO-N/A |
Software Resources
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Request a Driver/SoftwareHardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Analog-to-Digital Converters (ADCs) 1 | ||
| MAX1617A | PRODUCTION | Remote/Local Temperature Sensor with SMBus Serial Interface |
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