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ADT7461AARMZ-R 数据表(PDF) 1 Page - ON Semiconductor |
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ADT7461AARMZ-R 数据表(HTML) 1 Page - ON Semiconductor |
1 / 19 page © Semiconductor Components Industries, LLC, 2009 December, 2009 − Rev. 6 1 Publication Order Number: ADT7461A/D ADT7461A +15C Temperature Monitor with Series Resistance Cancellation The ADT7461A is a dual−channel digital thermometer and undertemperature/overtemperature alarm, intended for use in PCs and thermal management systems. It is pin− and register−compatible with the ADM1032 and ADT7461. A feature of the ADT7461A is series resistance cancellation, where up to 1.5 k W (typical) of resistance in series with the temperature monitoring diode can be automatically cancelled from the temperature result, allowing noise filtering. The ADT7461A has a configurable ALERT output and an extended, switchable temperature measurement range. The ADT7461A can measure the temperature of a remote thermal diode accurate to ±1°C and the ambient temperature accurate to ±3°C. The temperature measurement range defaults to 0 °C to +127°C, compatible with the ADM1032, but it can be switched to a wider measurement range of −64 °C to +191°C. The ADT7461A communicates over a 2−wire serial interface, compatible with system management bus (SMBus) standards. The default SMBus address of the ADT7461A is 0x4C. An ADT7461A−2 is available with an SMBus address of 0x4D. This is useful if more than one ADT7461A is used on the same SMBus. An ALERT output signals when the on−chip or remote temperature is out of range. The THERM output is a comparator output that allows on/off control of a cooling fan. The ALERT output can be reconfigured as a second THERM output, if required. Features • On−Chip and Remote Temperature Sensor • 0.25°C Resolution/1°C Accuracy on Remote Channel • 1°C Resolution/1°C Accuracy on Local Channel • Automatically Cancels Up to 1.5 kW (Typ) of Resistance in Series with Remote Diode to Allow Noise Filtering • Extended, Switchable Temperature Measurement Range 0 °C to +127°C (Default) or –64°C to +191°C • Pin− and Register−Compatible with ADM1032 and ADT7461 • 2−Wire SMBus Serial Interface with SMBus Alert Support • Programmable Over/Undertemperature Limits • Offset Registers for System Calibration • Up to Two Overtemperature Fail−Safe THERM Outputs • Small 8−Lead MSOP • 240 mA Operating Current, 5 mA Standby Current • These are Pb−Free Devices Applications • Desktop and Notebook Computers • Industrial Controllers • Smart Batteries • Automotive • Embedded Systems • Burn−In Applications • Instrumentation MARKING DIAGRAM http://onsemi.com PIN ASSIGNMENT VDD D+ D– GND ALERT/THERM2 THERM 1 2 3 4 8 7 6 5 (Top View) SCLK SDATA See detailed ordering and shipping information in the package dimensions section on page 18 of this data sheet. ORDERING INFORMATION MSOP−8 CASE 846AB T1x = Refer to Order Info Table A = Assembly Location Y = Year W = Work Week G = Pb−Free Package 1 (Note: Microdot may be in either location) 1 8 T1x AYWG G |
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类似说明 - ADT7461AARMZ-R |
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