EVAL-ADT7467EBZ ON Semiconductor, EVAL-ADT7467EBZ Datasheet - Page 2

• Manufacturer Part Number: EVAL-ADT7467EBZ
• Description: BOARD EVALUATION FOR ADT7467
• Manufacturer: ON Semiconductor
• Series: dBCool®r

Specifications of EVAL-ADT7467EBZ

• Sensor Type: Temperature
• Sensing Range: -40°C ~ 120°C
• Interface: SMBus (2-Wire/I²C)
• Sensitivity: ±1.5°C
• Voltage - Supply: 3 V ~ 5.5 V
• Embedded: No
• Utilized Ic / Part: ADT7467
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ADT7467
TABLE OF CONTENTS
Features...............................................................................................1
General Description..........................................................................1
Functional Block Diagram...............................................................1
Revision History................................................................................2
Specifications .....................................................................................3
Absolute Maximum Ratings ............................................................5
Pin Configuration and Function Descriptions .............................6
Typical Performance Characteristics..............................................7
Product Description .........................................................................9
Serial Bus Interface .........................................................................11
Analog-to-Digital Converter .........................................................15
Limits, Status Registers, and Interrupts .......................................21
Active Cooling .................................................................................27
REVISION HISTORY
01/08 - Rev 3: Conversion to ON Semiconductor
12/07—Rev. A to Rev. B
Changes to Limit Values Section
Changes to Table 13
Changes to Figure 34 and Figure 36
Changes to Figure 41
Changes to Step 11: Monitoring THERM Section
Changes to Table 26
Changes to Table 30
Changes to Table 37
Changes to Table 38
Changes to Table 41 and Table 42
Changes to Table 52 and Table 53
Thermal Characteristics...............................................................5
ESD Caution ..................................................................................5
Comparison Between ADT7460 and ADT7467.......................9
Recommended Implementation ...............................................10
Write Operations.........................................................................13
Read Operations..........................................................................13
SMBus Timeout...........................................................................14
Voltage Measurement Input ......................................................15
Additional ADC Functions for Voltage Measurements.........15
Temperature Measurement........................................................16
Series Resistance Cancellation ..................................................17
Additional ADC Functions for Temperature Measurement.19
Limit Values .................................................................................21
Status Registers............................................................................22
Interrupts .....................................................................................22
Driving the Fan Using PWM Control......................................27
Laying Out 2-Wire and 3-Wire Fans........................................29
Rev. 3 | Page 2 of 77 | www.onsemi.com
Miscellaneous Functions................................................................34
Automatic Fan Control Overview ................................................35
Programming the Automatic Fan Speed Control Loop.............38
Enhancing System Acoustics .........................................................57
Register Map ....................................................................................59
ADT7467 Programming Block Diagram.....................................76
Outline Dimensions........................................................................77
Changes to Table 54
Changes to Figure 84
Updated Outline Dimensions
Changes to Ordering Guide
7/05—Rev. 0 to Rev. A
Change to Absolute Maximum Ratings
Change to Recommended Implementation Section
Changes to Recommended Implementation Figure
Deleted Recommended Implementation 2 Section
Deleted Recommended Implementation 2 Figure
Change to Table 17
Changes to Ordering Guide
4/04—Revision 0: Initial Version
Fan Speed Measurement ............................................................30
Fan Spin-Up.................................................................................31
PWM Logic State ........................................................................32
Fan Speed Control ......................................................................33
Operating from 3.3 V Standby..................................................34
XNOR Tree Test Mode ...............................................................34
Power-On Default .......................................................................34
Dynamic T
Step 1: Hardware Configuration ...............................................38
Step 2: Configuring the Mux.....................................................40
Step 3: T
Step 4: PWM
Step 5: PWM
Step 6: T
Step 7: T
Step 8: T
Step 9: Operating Points for Temperature Channels .............50
Step 10: High and Low Limits for Temperature Channels....51
Step 11: Monitoring THERM....................................................53
Step 12: Ramp Rate for Acoustic Enhancement .....................54
Acoustic Enhancement Mode Overview.................................57
Ordering Guide ...........................................................................77
MIN
RANGE
THERM
HYST
MIN
Settings for Thermal Calibration Channels .......42
for Temperature Channels ..................................49
MIN
MAX
for Temperature Channels ................................45
for Temperature Channels................................47
Control Mode ....................................................36
for PWM (Fan) Outputs ...............................43
for PWM (Fan) Outputs ..............................44