Product Summary

The ADM1030ARQZ 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℃ 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 resistor. The ADM1030ARQZ will also detect a stalled fan.

Parametrics

ADM1030ARQZ absolute maximum ratings: (1)Positive Supply Voltage (VCC): 6.5 V; (2)Voltage on Any Input or Output Pin: -0.3 V to +6.5 V; (3)Input Current at Any Pin: ± 5 mA; (4)Package Input Current: ± 20 mA; (5)Maximum Junction Temperature (TJMAX): 150℃; (6)Storage Temperature Range: -65℃ to +150℃.

Features

ADM1030ARQZ features: (1)Automatic Fan Speed Control Allows Control Independent of CPU Intervention after Initial Setup; (2)Control Loop Minimizes Acoustic Noise and Battery Consumption; (3)Remote Temperature Measurement Accurate to 1℃ Using Remote Diode; (4)0.125℃ Resolution on Remote Temperature Channel; (5)Local Temperature Sensor with 0.25℃ Resolution; (6)Pulsewidth Modulation Fan Control (PWM); (7)Programmable PWM Frequency; (8)Programmable PWM Duty Cycle; (9)Tach Fan Speed Measurement.

Diagrams

 ADM1030ARQZ pin connection

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