MAX1669EEE Maxim Integrated Products, MAX1669EEE Datasheet
MAX1669EEE
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MAX1669EEE Summary of contents
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... Supports SMBus Alert Response o ±3°C Temperature Accuracy (-40°C to +125°C, remote) o 3µA Standby Supply Current o +3V to +5.5V Supply Range o Small 16-Pin QSOP Package PART Applications MAX1669EEE TOP VIEW Features Ordering Information TEMP. RANGE PIN-PACKAGE -40°C to +85°C 16 QSOP Pin Configuration ...
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Fan Controller and Remote Temperature Sensor with SMBus Serial Interface ABSOLUTE MAXIMUM RATINGS V to AGND...........................................................-0.3V to +6V CC DXP, ADD_ to AGND.................................-0. DXN to AGND.......................................................-0.3V to +0.8V SMBCLK, SMBDATA, ALERT, SYNC, I/O1, I/O2, OVERT, FAN to AGND ...
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Fan Controller and Remote Temperature Sensor ELECTRICAL CHARACTERISTICS (continued +3.3V 0°C to +85°C, unless otherwise noted. Typical values are PARAMETER FAN PWM Frequency Error FAN Total Unadjusted Error FAN Output Voltage High ...
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Fan Controller and Remote Temperature Sensor with SMBus Serial Interface ELECTRICAL CHARACTERISTICS (V = +3.3V -40°C to +85°C, unless otherwise noted.) (Note PARAMETER ADC AND POWER SUPPLY Temperature Resolution (Note 1) Temperature Error, Remote Diode ...
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Fan Controller and Remote Temperature Sensor (Temperature error = measured - actual, T TEMPERATURE ERROR vs. LEAKAGE RESISTANCE PATH = DXP TO GND; CONFIG = 02h 10 0 -10 -20 PATH = DXP TO V (5V); CONFIG ...
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Fan Controller and Remote Temperature Sensor with SMBus Serial Interface (Temperature error = measured - actual, T PWM DUTY FACTOR vs. CODE (D3D2D1D0) 100 V = +3. ...
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Fan Controller and Remote Temperature Sensor V CC DXP DXN MUX GND 8 8 TEMPERATURE SENSOR I/O1 GENERAL-PURPOSE I/O CONTROLLER I/O2 TEMPERATURE T Figure 1. MAX1669 Temperature Sensor Functional Diagram _______________Detailed Description The MAX1669 temperature sensor is designed to work ...
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Fan Controller and Remote Temperature Sensor with SMBus Serial Interface The PWM or DAC fan control circuitry is completely independent from the temperature measurement, and software closes the temperature-control feedback loop (Figure 2). ADC and Multiplexer The ADC is an ...
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Fan Controller and Remote Temperature Sensor Write Byte Format S ADDRESS bits 1 7-bit slave address: equivalent to chip-select line Read Byte Format S ADDRESS WR ACK 1 7 bits 1 1 Slave address: equivalent to chip-select ...
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Fan Controller and Remote Temperature Sensor with SMBus Serial Interface ALERT Interrupts The ALERT interrupt output signal is latched and can only be cleared by reading the Alert Response address. Interrupts are generated in response to T and T comparisons, ...
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Fan Controller and Remote Temperature Sensor Table 3. Command Byte Bit Assignments REGISTER COMMAND 00h RTEMP 01h RSTAT 02h RCFG 03h 04h 05h 06h RHI 07h RLOW 08h WCFG 09h 0Ah 0Bh 0Ch WHI 0Dh WLOW 0Eh OSHT 0Fh RCRIT ...
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Fan Controller and Remote Temperature Sensor with SMBus Serial Interface Table 4. Configuration Byte Bit Assignments BIT NAME POR STATE 7 MASK0 0 (MSB) 6 STBY 0 5 POL 0 4 MASK1 0 3 MASK2 0 2 FAN ON 0 ...
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Fan Controller and Remote Temperature Sensor Table 6. Fan Duty-Factor Data Byte Bit Assignments (Write Command = 1Bh) BIT NAME NAME 7 (MSB 3–0 RFU I/O_ PIN Figure 4. GPIO Logic Diagram GPIO ...
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Fan Controller and Remote Temperature Sensor with SMBus Serial Interface Table 7. GPIO Input/Output Data Byte Bit Assignments BIT NAME POR STATE 7 DATA1 1 (MSB) 6 DATA2 1 5–0 RFU 0 Table 8. Write-Once Protection Byte Bit Assignments BIT ...
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Fan Controller and Remote Temperature Sensor Table 9. Status Byte Bit Assignments BIT NAME 7 I/O1 This bit indicates the current state of I/O1 (unlatched). (MSB) 6 I/O2 This bit indicates the current state of I/O2 (unlatched). This bit is ...
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Fan Controller and Remote Temperature Sensor with SMBus Serial Interface Power-Up Defaults • Interrupt latch is cleared. • ADC begins autoconverting at a 2Hz rate. • Command byte is set to 01h to facilitate quick remote receive-byte queries. • T ...
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Fan Controller and Remote Temperature Sensor 10k 2N3906 Figure 5. Linear Fan Control (DAC Mode) with Fan “Off” at Power-Up 10k 10k 2N3906 Figure 6. Linear Fan Control (DAC Mode) with Fan “On” at Power-Up ______________________________________________________________________________________ with SMBus Serial Interface ...
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Fan Controller and Remote Temperature Sensor with SMBus Serial Interface HIGH LOW SMBCLK SMBDATA SU:STA HD:STA A = START CONDITION B = MSB OF ADDRESS CLOCKED INTO SLAVE C = LSB OF ADDRESS ...
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Fan Controller and Remote Temperature Sensor 10k 2N3906 ______________________________________________________________________________________ with SMBus Serial Interface +3V TO +5.5V 0.1µF 10k 10k 10k V SMBCLK CC SMBDATA ALERT OVERT DXP 2200pF MAX1669 FAN DXN SYNC ADD0 I/O1 ADD1 I/O2 ADD2 AGND PGND TRANSISTOR ...
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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. 20 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2000 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products ...