MAX6649MUA Maxim Integrated Products, MAX6649MUA Datasheet
MAX6649MUA
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MAX6649MUA Summary of contents
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... Programmable Conversion Rate ♦ SMBus-Compatible Interface ♦ SMBus Timeout PART MAX6646MUA -55°C to +125°C 8 µMAX MAX6647MUA -55°C to +125°C 8 µMAX MAX6649MUA -55°C to +125°C 8 µMAX Applications P Selector Guide, Pin Configurations, and Functional Diagram appear at end of data sheet. Features Ordering Information ...
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Precision SMBus-Compatible Remote/ Local Sensors with Overtemperature Alarms ABSOLUTE MAXIMUM RATINGS All Voltages Referenced to GND V ...........................................................................-0.3V to +6V CC DXP.............................................................-0. DXN .......................................................................-0.3V to +0.8V SCLK, SDA, ALERT, OVERT.....................................-0.3V to +6V SDA, ALERT, OVERT Current .............................-1mA ...
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Precision SMBus-Compatible Remote/ Local Sensors with Overtemperature Alarms ELECTRICAL CHARACTERISTICS (continued 3.0V to 5.5V -55°C to +125°C, unless otherwise specified. Typical values are PARAMETER SYMBOL ALERT, OVERT Output Low Voltage Output ...
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Precision SMBus-Compatible Remote/ Local Sensors with Overtemperature Alarms (V = 3.3V +25°C, unless otherwise noted STANDBY SUPPLY CURRENT vs. SUPPLY VOLTAGE 5.0 4.5 4.0 3.5 3.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 SUPPLY VOLTAGE ...
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Precision SMBus-Compatible Remote/ Local Sensors with Overtemperature Alarms PIN NAME Supply Voltage Input 5.5V. Bypass resistor is recommended but not required for additional noise filtering. Combined Remote-Diode Current Source and A/D Positive Input ...
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Precision SMBus-Compatible Remote/ Local Sensors with Overtemperature Alarms The DXP-DXN differential input voltage range is 0.25V to 0.95V. Excess resistance in series with the remote diode causes +0.5°C (typ) error per ohm. Remote Temperature Measurement The MAX6646/MAX6647/MAX6649 measure remote ...
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Precision SMBus-Compatible Remote/ Local Sensors with Overtemperature Alarms Write Byte Format S ADDRESS WR 7 bits Slave Address: equiva- lent to chip-select line of a 3-wire interface Read Byte Format S ADDRESS WR ACK 7 bits Slave Address: equiva- ...
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Precision SMBus-Compatible Remote/ Local Sensors with Overtemperature Alarms LOW HIGH SMBCLK SMBDATA t t HD:STA SU:STA A = START CONDITION B = MSB OF ADDRESS CLOCKED INTO SLAVE C = LSB OF ADDRESS CLOCKED INTO ...
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Precision SMBus-Compatible Remote/ Local Sensors with Overtemperature Alarms Table 3. Fault Queue Register Bit Definition (22h) POR BIT NAME STATE Reserved. Always write RFU 1 this bit. Reserved. Always write RFU 0 zero ...
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Precision SMBus-Compatible Remote/ Local Sensors with Overtemperature Alarms Table 5. Command-Byte Bit Assignments REGISTER ADDRESS RLTS 00h 0000 0000 RRTE 01h 0000 0000 RSL 02h N/A RCL 03h 0000 0000 RCRA 04h 0000 0111 RLHN 05h 0101 0101 RLLI ...
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Precision SMBus-Compatible Remote/ Local Sensors with Overtemperature Alarms Table 7. Status Register Bit Assignments (02h) POR BIT NAME STATE 7 (MSB) BUSY 0 A/D is busy converting when 1. Local (internal) high-temperature alarm has tripped when 1; cleared by ...
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Precision SMBus-Compatible Remote/ Local Sensors with Overtemperature Alarms Applications Information Remote-Diode Selection The MAX6646/MAX6647/MAX6649 can directly measure the die temperature of CPUs and other ICs that have on-board temperature-sensing diodes (see Typical Operating Circuit), or they can measure the ...
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Precision SMBus-Compatible Remote/ Local Sensors with Overtemperature Alarms GND 10 MILS DXP 10 MILS DXN GND Figure 4. Recommended DXP-DXN PC Traces ADC Noise Filtering The integrating ADC used has good noise rejection for low-frequency signals such as 60Hz/120Hz ...
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Precision SMBus-Compatible Remote/ Local Sensors with Overtemperature Alarms When measuring the temperature of a CPU or other IC with an on-chip sense junction, thermal mass has virtu- ally no effect; the measured temperature of the junction tracks the actual ...
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Precision SMBus-Compatible Remote/ Local Sensors with Overtemperature Alarms EXTERNAL OVERT PART ADDRESS MAX6646 1001 101 MAX6647 1001 110 MAX6649 1001 100 Pin Configuration TOP VIEW DXP 2 7 MAX6646 MAX6647 DXN 3 6 MAX6649 OVERT ...
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... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 16 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2007 Maxim Integrated Products ...