Analog Devices dBCool ADT7475 Manuals

Manuals and User Guides for Analog Devices dBCool ADT7475. We have 1 Analog Devices dBCool ADT7475 manual available for free PDF download: Manual

Analog Devices dBCool ADT7475 Manual

Analog Devices dBCool ADT7475 Manual (64 pages)

Remote Thermal Monitor and Fan Controller

Brand: Analog Devices | Category: Controller | Size: 1 MB

Table of Contents

Table of Contents
2
Specifications
3
Rpm
3
High Level Output Current, I
3
Input High Voltage, V
4
Ihv
4
Input Low Voltage, V
4
Ilv
4
Absolute Maximum Ratings
5
Thermal Characteristics
5
ESD Caution
5
Pin Configuration and Function Descriptions
6
Typical Performance Characteristics
7
Product Description
9
Quick Comparison between ADT7473 and ADT7475
9
Recommended Implementation
9
Serial Bus Interface
10
Write Operations
11
For V CCP
11
Read Operations
12
Smbus Timeout
12
Virus Protection
12
Voltage Measurement Input
12
Analog-To-Digital Converter
12
Input Circuitry
13
Voltage Measurement Registers
13
VCCP Limit Registers
13
Extended Resolution Registers
13
Additional ADC Functions for Voltage Measurements
13
Temperature Measurement Method
15
Vout
15
Factors Affecting Diode Accuracy
17
Additional ADC Functions for Temperature Measurement
18
Limits, Status Registers, and Interrupts
20
Limit Values
20
Status Registers
21
THERM Timer
23
Fan Drive Using PWM Control
26
Operating from 3.3 V Standby
31
Standby Mode
31
XNOR Tree Test Mode
31
Power-On Default
31
Programming the Automatic Fan Speed Control Loop
32
Automatic Fan Control Overview
32
Step 1: Hardware Configuration
33
Recommended Implementation 1
34
Recommended Implementation 2
35
Step 2: Configuring the Mux
36
Step 3: TMIN Settings for Thermal Calibration Channels
38
Step 4: PWM MIN for each PWM (Fan) Output
39
Step 5: PWM MAX for PWM (Fan) Outputs
39
Step 6: TRANGE for Temperature Channels
40
Step 7: TTHERM for Temperature Channels
43
Step 8: THYST for Temperature Channels
44
Register Tables
47
Outline Dimensions
64
Ordering Guide
64

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