EVAL-ADM1023EB ON Semiconductor, EVAL-ADM1023EB Datasheet
EVAL-ADM1023EB
Specifications of EVAL-ADM1023EB
Related parts for EVAL-ADM1023EB
EVAL-ADM1023EB Summary of contents
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ADM1023 ACPI-Compliant, High Accuracy Microprocessor System Temperature Monitor The ADM1023 is a 2−channel digital thermometer and under/overtemperature alarm for use in personal computers and other systems requiring thermal monitoring and management. Optimized for the Pentium® III, the higher accuracy allows ...
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ON−CHIP TEMPERATURE SENSOR LOCAL TEMPERATURE VALUE REGISTER D+ 3 A−TO−D ANALOG CONVERTER MUX D– 4 BUSY RUN/STANDBY REMOTE TEMPERATURE VALUE REGISTERS EXTERNAL DIODE OPEN−CIRCUIT ADM1023 GND GND ...
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PIN ASSIGNMENT Pin No. Mnemonic D− ADD1 7 GND 8 GND ADD0 11 ALERT 12 SDATA SCLK 15 STBY 16 NC ELECTRICAL CHARACTERISTICS ...
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ELECTRICAL CHARACTERISTICS Parameter SMBus Interface (See Figure 2) Logic Input High Voltage STBY, SCLK, SDATA Logic Input Low Voltage STBY, SCLK, SDATA SMBus Output Low Sink Current ALERT Output Low Sink Current Logic Input Current, I ...
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D+ TO GND –5 – –15 –20 –25 – LEAKAGE RESISTANCE (MΩ) Figure 3. Temperature Error vs. Resistance from Track to V and GND DD 9 100mV p−p 8 ...
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FREQUENCY (Hz) Figure 9. Temperature Error vs. Differential−Mode Noise Frequency 100 −20 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 SUPPLY VOLTAGE (V) Figure 11. ...
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Theory of Operation Functional Description The ADM1023 contains a two−channel analog−to−digital converter (ADC) with special input−signal conditioning to enable operation with remote and on−chip diode temperature sensors. When the ADM1023 is operating normally, the ADC operates in a free−running mode. ...
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This is given by: + nKT where Boltzmann’s constant the charge on the electron (1.6 × the absolute temperature in Kelvins the ratio of ...
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Temperature Data Format One LSB of the ADC corresponds to 0.125°C, so the ADM1023 can measure from 0°C to 127.875°C. The temperature data format and extended temperature resolution are shown in Table 1 and Table 2. Table 1. Temperature Data ...
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Table 3. List of ADM1023 Registers Read Address (Hex) Write Address (Hex) Not applicable Not applicable 00 Not applicable 01 Not applicable 02 Not applicable Not applicable 0F ...
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Table 5. Status Register Bit Assignments Bit Name Function 7 BUSY At 1 when ADC converting 6 LHIGH when local high temp limit tripped 5 LLOW when local low temp limit tripped 4 RHIGH ...
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Table 8. Device Addresses (Note 1) ADD0 ADD1 Device Address ADD0 and ADD1 are sampled at powerup only. The serial bus ...
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SCLK SDATA START BY MASTER SERIAL BUS ADDRESS BYTE Figure 17. Reading Data from a Previously Selected Register Any number of bytes of data may be transferred over the serial bus in one operation, but it ...
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If more than one device’s ALERT output is low, the one with the lowest device address has priority, in accordance with normal SMBus arbitration. 5. Once the ADM1023 has responded to the ARA, it resets its ALERT output, provided ...
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Use wide tracks to minimize inductance and reduce noise pickup. 10 mil track minimum width and spacing is recommended. GND D+ D– GND Figure 19. Arrangement of Signal Tracks • Try to minimize the number of copper/solder joints, which ...
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