MAX6655
Dual Remote/Local Temperature Sensors and Four-Channel Voltage Monitors
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Key Features
Applications/Uses
| Sensor Type | Remote |
| # Channels | Two |
| Interface | 2-Wire/I2C/SMBus |
| Alarm Output | Alert Overt |
| Functions | Remote & Local Sensor Voltage Monitor |
| Accuracy (±°C) | 1 |
| Parasite Pwr. | No |
| Temp. Thresh. | Programmable |
| Temp. Resolution (bits) | 11 |
| Oper. Temp. (°C) | -55 to +125 |
| Package/Pins | QSOP/16 |
| Budgetary Price (See Notes) | 4.29 |
Simplified Block Diagram
Technical Docs
| Data Sheet | Dual Remote/Local Temperature Sensors and Four-Channel Voltage Monitors | Dec 13, 2021 |
Support & Training
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Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
Sampling:
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Parameters
| Sensor Type | Remote |
| # Channels | Two |
| Interface | 2-Wire/I2C/SMBus |
| Alarm Output | Alert Overt |
| Functions | Remote & Local Sensor Voltage Monitor |
| Accuracy (±°C) | 1 |
| Parasite Pwr. | No |
| Temp. Thresh. | Programmable |
| Temp. Resolution (bits) | 11 |
| Oper. Temp. (°C) | -55 to +125 |
| Package/Pins | QSOP/16 |
| Budgetary Price (See Notes) | 4.29 |
Key Features
- Three Temperature Channels
- Two Remote PN Junctions
- One Local Sensor
- Four Voltage Channels
- +12V, +5V, +3.3V, +2.5V
- Three External Monitors
- One Internal Supply Monitor
- 11-Bit, 0.125°C Resolution
- High Accuracy: ±1°C Over +60°C to +100°C Temperature Range
- Programmable Under/Over-Threshold Alarms
- Programmable Power-Saving Mode
- No Calibration Required
- SMBus/I²C-Compatible Interface
- Active-low OVERT Output for Fan Control and System Shutdown
Applications/Uses
- Communication Systems
- Computers: Desktop, Workstation, Server
- Notebook Computers
- Servers
- Thin Clients
- Workstations
Description
The MAX6655/MAX6656 also measure their own supply voltage and three external voltages with 8-bit resolution. Each voltage input's sensitivity is set to give approximately 3/4-scale output code when the input voltage is at its nominal value. The MAX6655 operates at +5V supply and its second voltage monitor is 3.3V. The MAX6656 operates on a +3.3V supply and its second voltage monitor is 5V.
The 2-wire serial interface accepts standard SMBus™ Write Byte, Read Byte, Send Byte, and Receive Byte commands to program the alarm thresholds and to read data. The MAX6655/MAX6656 also provide SMBus alert response and timeout functions. The MAX6655/MAX6656 measure automatically and autonomously, with the conversion rate programmable. The adjustable rate allows the user to control the supply current.
In addition to the SMBus active-low ALERT output, the MAX6655/MAX6656 feature an active-low OVERT output, which is used as a temperature reset that remains active only while the temperature is above the maximum temperature limit. The active-low OVERT output is optimal for fan control or for system shutdown.
Technical Docs
| Data Sheet | Dual Remote/Local Temperature Sensors and Four-Channel Voltage Monitors | Dec 13, 2021 |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.
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