DatasheetsPDF.com

ADM1033


Part Number ADM1033
Manufacturer Analog Devices
Title Thermal Monitor and Fan Speed (RPM) Controller
Description . 3 Specifications.....
Features 1 local and 1 remote temperature channel ±1.5°C accuracy on local and remote channels Automatic series resistance cancellation on remote Temperature channels 1 kΩ Fast (up to 64 measurements per second) SMBus 2.0, 1.1, and 1.0 compliant SMBus address input/LOCATION input to UDID Programmable over-...

File Size 2.17MB
Datasheet ADM1033 PDF File








Similar Ai Datasheet

ADM1030 : The ADM1030 is an ACPI-compliant two-channel digital thermometer and under/over temperature alarm, for use in computers and thermal management systems. Optimized for the Pentium III, the higher 1°C accuracy offered allows systems designers to safely reduce temperature guardbanding and increase system performance. A Pulsewidth Modulated (PWM) Fan Control output controls the speed of a cooling fan by varying output duty cycle. Duty cycle values between 33%–100% allow smooth control of the fan. The speed of the fan can be monitored via a TACH input for a fan with a tach output. The TACH input can be programmed as an analog input, allowing the speed of a 2-wire fan to be determined via a sense .

ADM1030 : ADM1030 Intelligent Temperature Monitor and PWM Fan Controller The ADM1030 is an ACPI-compliant two-channel digital thermometer and under/over temperature alarm, for use in computers and thermal management systems. Optimized for the Pentium III, the higher 1C accuracy offered allows systems designers to safely reduce temperature guardbanding and increase system performance. A Pulsewidth Modulated (PWM) Fan Control output controls the speed of a cooling fan by varying output duty cycle. Duty cycle values between 33%–100% allow smooth control of the fan. The speed of the fan can be monitored via a TACH input for a fan with a tach output. The TACH input can be programmed as an analog input,.

ADM1031 : FEATURES Optimized for Pentium® III: Allows Reduced Guardbanding Software and Automatic Fan Speed Control Automatic Fan Speed Control Allows Control Independent of CPU Intervention after Initial Setup Control Loop Minimizes Acoustic Noise and Battery Consumption Remote Temperature Measurement Accurate to 1؇ C Using Remote Diode (Two Channels) 0.125؇ C Resolution on External Temperature Channels Local Temperature Sensor with 0.25؇C Resolution Pulsewidth Modulation Fan Control (PWM) for Two Fans Programmable PWM Frequency Programmable PWM Duty Cycle Tach Fan Speed Measurement (Two Channels) Analog Input To Measure Fan Speed of 2-Wire Fans (Using Sense Resistor) 2-Wire System Management Bus (S.

ADM1031 : ADM1031 Intelligent Temperature Monitor and Dual PWM Fan Controller The ADM1031 is an ACPI-compliant, three-channel digital thermometer and under/overtemperature alarm for use in personal computers and thermal management systems. Optimized for the PentiumIII, the part offers a 1C higher accuracy, which allows system designers to safely reduce temperature guard-banding and http://onsemi.com increase system performance. Two PWM fan control outputs control the speed of two cooling fans by varying output duty cycle. Duty cycle values between 33% and 100% allow smooth control of the fans. The speed of each fan can be QSOP−16 CASE 492 monitored via TACH inputs, which can be reprogramme.

ADM1032 : The ADM1032 is a dual-channel digital thermometer and under/over temperature alarm, intended for use in personal computers and thermal management systems. The higher 1°C accuracy offered allows systems designers to safely reduce temperature guardbanding and increase system performance. The device can measure the temperature of a microprocessor using a diode-connected NPN or PNP transistor, which may be provided on-chip or can be a low-cost discrete device such as the 2N3906. A novel measurement technique cancels out the absolute value of the transistor’s base emitter voltage, so that no calibration is required. The second measurement channel measures the output of an on-chip temperature sen.

ADM1032 : Positive Supply, 3.0 V to 5.5 V. Positive Connection to Remote Temperature Sensor. Negative Connection to Remote Temperature Sensor. THERM is an open-drain output that can be used to turn a fan on/off or throttle a CPU clock in the event of an overtemperature condition. Requires pullup to VDD, the same supply as the ADM1032. Note: Please refer to Power Sequencing Considerations; THERM Pin Pullup on page 15 for more information. 5 GND Supply Ground Connection. 6 ALERT Open-Drain Logic Output Used as Interrupt or SMBus Alert. 7 SDATA Logic Input/Output, SMBus Serial Data. Open-drain output. Requires pullup resistor. 8 SCLK Logic Input, SMBus Serial Clock. Requires pullup resistor. .

ADM1033 : ADM1033 Thermal Monitor and Fan Speed (RPM) Controller The ADM1033 is a one channel remote- and local-temperature sensor and fan controller. The remote channel monitors the temperature of the remote thermal diode, which may be discrete 2N3904/6s or may be located on a microprocessor die. The device also monitors its own ambient temperature. The ADM1033 can monitor and control the speed of cooling fan. The user can program a target fan speed, or else use the look-up table to input a temperature-to-fan speed profile. The look-up table can be configured to run the fans at discrete speeds (discrete mode) or to ramp the fan speed with temperature (linear mode). The ADM1033 communicates over a 2-.

ADM1034 : DRIVE1 Pin Drives Fan 1. Open-drain output. Requires a pullup resistor. Fan 1 Fan Speed Measurement Input. Connects to the fan’s TACH output to measure the fan speed. DRIVE2 Pin Drives Fan 2. Open-drain output. Requires a pullup resistor. Fan 2 Fan Speed Measurement Input. Connects to the fan’s TACH output to measure the fan speed. Ground for Analog and Digital Circuitry. Power. Can be powered by 3.3 V standby power if monitoring in low power states is required. Can be configured as an overtemperature interrupt output, or as an input (to monitor PROCHOT output of an INTEL CPU). A timer measures assertion times on the THERM pin (either input or output). FAN_FAULT: Open-Drain Output. Asserted .

ADM1034 : ..... 7 Typical Performance Characteristics ... 8 Functional Description 10 Internal Registers 10 Serial Bus Interface... 10 Location Input..... 10 SMBus 2.0 ARP-Capable Mode 10 SMBus 2.0 Fixed-and-Discoverable Mode 12 SMBus 2.0 Read and Write Operations ......




Since 2006. D4U Semicon,
Electronic Components Datasheet Search Site. (Privacy Policy & Contact)