ADM1032ARM-1 ON Semiconductor, ADM1032ARM-1 Datasheet
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ADM1032ARM-1
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ADM1032ARM-1 Summary of contents
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ADM1032 +15C Remote and Local System Temperature Monitor The ADM1032 is a dual−channel digital thermometer and under/overtemperature alarm intended for use in PCs and thermal management systems. The device can measure the temperature of a remote thermal diode, which can ...
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ON−CHIP TEMPERATURE SENSOR LOCAL TEMPERATURE VALUE REGISTER D+ ANALOG A/D MUX CONVERTER D– BUSY RUN/STANDBY REMOTE TEMPERATURE VALUE REGISTER REMOTE OFFSET REGISTER EXTERNAL DIODE OPEN−CIRCUIT ADM1032 V GND DD ABSOLUTE MAXIMUM RATINGS Parameter Positive Supply Voltage ( GND ...
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PIN ASSIGNMENT Pin No. Mnemonic 1 V Positive Supply Positive Connection to Remote Temperature Sensor. 3 D− Negative Connection to Remote Temperature Sensor. 4 THERM THERM is an open−drain output that can ...
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ELECTRICAL CHARACTERISTICS Parameter Serial Bus Timing (Note 2) SDATA Output Low Sink Current ALERT Output Low Sink Current Logic Input Current Input Capacitance, SCLK, SDATA Clock Frequency SMBus Timeout (Note 3) SCLK Clock Low Time, ...
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D+ TO GND 0 −4 − −12 – LEAKAGE RESISTANCE ( Figure 3. Temperature Error vs. Leakage Resistance 40mV p−p ...
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V = 100mV p− 50mV p− 25mV p− 100k 1M 10M FREQUENCY (Hz) Figure 9. Temperature Error vs. Common−Mode Noise Frequency ...
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Functional Description The ADM1032 is a local and remote temperature sensor and overtemperature alarm. When the ADM1032 is operating normally, the on−board A/D converter operates in a free running mode. The analog input multiplexer alternately selects either the on−chip temperature ...
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Temperature Data Format One LSB of the ADC corresponds to 0.125°C, so the ADC can measure from 0°C to 127.875°C. The temperature data format is shown in Table 1 and Table 2. The results of the local and remote temperature ...
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When Flag 1 and Flag 0 are set, the THERM output goes low to indicate that the temperature measurements are outside the programmed limits. THERM output does not need to be reset, unlike the ALERT output. Once the measurements are ...
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Table 7. Consecutive ALERT Register Codes Register Value Number of Out−of−Limit Measurements Required yxxx 000x yxxx 001x yxxx 011x yxxx 111x NOTE don’t care bits, and y = SMBus timeout bit. Default = 0. See SMBus section for ...
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The peripheral whose address corresponds to the transmitted address responds by pulling the data line low during the low period before the ...
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SCLK SDATA A6 START BY MASTER Figure 13. Writing a Register Address to the Address Pointer Register, 1 SCLK SDATA START BY MASTER SERIAL BUS ADDRESS BYTE Figure 14. Writing to the Address Pointer Register Only ...
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LSB added. The address of the device is now known, and it can be interrogated in the usual way more than one device’s ALERT output is low, the one with the lowest ...
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In this respect, the ADM1032 differs from and improves upon competitive devices that output zero if the external sensor goes short−circuit. These devices can misinterpret a genuine 0°C measurement as a fault condition. When the D+ and D− lines are ...
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Layout Considerations Digital boards can be electrically noisy environments, and the ADM1032 is measuring very small voltages from the remote sensor, so care must be taken to minimize noise induced at the sensor inputs. The following precautions should be taken. ...
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... ADM1032ARMZ−R7 8−Lead MSOP ADM1032ARMZ−001 8−Lead MSOP ADM1032ARMZ−1RL 8−Lead MSOP ADM1032ARMZ−002 8−Lead MSOP ADM1032ARMZ−2R 8−Lead MSOP ADM1032ARMZ−2RL7 8−Lead MSOP †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. *The “ ...
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... G C SEATING PLANE −Z− 0.25 (0.010 *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. PACKAGE DIMENSIONS SOIC−8 NB CASE 751−07 ISSUE 0.10 (0.004 SOLDERING FOOTPRINT* 1 ...
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... A1 8X *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. Protected by US Patents 5,982,221; 6,097,239; 6,133,753; 6,169,442; 5,867,012. ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein ...