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LM75BIM-3/NOPB Datasheet(PDF) 5 Page - Texas Instruments |
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LM75BIM-3/NOPB Datasheet(HTML) 5 Page - Texas Instruments |
5 / 31 page LM75B, LM75C www.ti.com SNIS153D – JULY 2009 – REVISED OCTOBER 2015 6.5 Temperature-to-Digital Converter Characteristics Unless otherwise noted, these specifications apply for: +VS = 5 Vdc for LM75BIM-5, LM75BIMM-5, LM75CIM-5, and LM75CIMM-5; and +VS = 3.3 Vdc for LM75BIM-3, LM75BIMM-3, LM75CIM-3, and LM75CIMM-3 (1). T A = TJ = 25°C, unless otherwise noted. (2) PARAMETER TEST CONDITIONS MIN(3) TYP(4) MAX(3) UNIT TA = −25°C to 100°C –2 2 Accuracy °C TA = −55°C to 125°C –3 3 Resolution 9 Bits Temperature Conversion Time See(5) 100 ms See(5), –55°C ≤ TA ≤ 125°C 300 I2C Inactive 0.25 mA I2C Inactive, –55°C ≤ TA ≤ 125°C 0.5 LM75B Shutdown Mode, +VS = 3 V 4 μA Shutdown Mode, +VS = 5 V 6 Quiescent Current I2C Inactive 0.25 mA I2C Inactive, –55°C ≤ TA ≤ 125°C 1 LM75C Shutdown Mode, +VS = 3 V 4 μA Shutdown Mode, +VS = 5 V 6 O.S. Output Saturation Voltage IOUT = 4.0 mA, –55°C ≤ TA ≤ 0.8 V 125°C O.S. Delay See (6), –55°C ≤ TA ≤ 125°C 1 6 Conversions TOS Default Temperature 80 See (7) °C THYST Default Temperature 75 (1) All part numbers of the LM75 will operate properly over the +VS supply voltage range of 3 V to 5.5 V. The devices are tested and specified for rated accuracy at their nominal supply voltage. Accuracy will typically degrade 1°C/V of variation in +VS as it varies from the nominal value. (2) For best accuracy, minimize output loading. Higher sink currents can affect sensor accuracy with internal heating. This can cause an error of 0.64°C at full rated sink current and saturation voltage based on junction-to-ambient thermal resistance. (3) Limits are specified to AOQL (Average Outgoing Quality Level). (4) Typicals are at TA = 25°C and represent most likely parametric norm. (5) The conversion-time specification is provided to indicate how often the temperature data is updated. The LM75 can be accessed at any time and reading the Temperature Register will yield result from the last temperature conversion. When the LM75 is accessed, the conversion that is in process will be interrupted and it will be restarted after the end of the communication. Accessing the LM75 continuously without waiting at least one conversion time between communications will prevent the device from updating the Temperature Register with a new temperature conversion result. Consequently, the LM75 should not be accessed continuously with a wait time of less than 300 ms. (6) O.S. Delay is user programmable up to 6 “over limit” conversions before O.S. is set to minimize false tripping in noisy environments. (7) Default values set at power up. 6.6 Digital DC Characteristics Unless otherwise noted, these specifications apply for +VS = 5 Vdc for LM75BIM-5, LM75BIMM-5, LM75CIM-5, and LM75CIMM-5; and +VS = 3.3 Vdc for LM75BIM-3, LM75BIMM-3, LM75CIM-3, and LM75CIMM-3 (1). T A = TJ = 25°C, unless otherwise noted. PARAMETER TEST CONDITIONS MIN(2) TYP(3) MAX(2) UNIT VIN(1) Logical “1” Input Voltage –55°C ≤ TA ≤ 125°C +VS × 0.7 +VS + 0.3 V VIN(0) Logical “0” Input Voltage –55°C ≤ TA ≤ 125°C −0.3 +VS × 0.3 V IIN(1) Logical “1” Input Current VIN = +VS 0.005 μA VIN = +VS, –55°C ≤ TA ≤ 1 125°C IIN(0) Logical “0” Input Current VIN = 0 V −0.005 μA VIN = 0 V, –55°C ≤ TA ≤ −1 125°C (1) All part numbers of the LM75 will operate properly over the +VS supply voltage range of 3 V to 5.5 V. The devices are tested and specified for rated accuracy at their nominal supply voltage. Accuracy will typically degrade 1°C/V of variation in +VS as it varies from the nominal value. (2) Limits are specified to AOQL (Average Outgoing Quality Level). (3) Typicals are at TA = 25°C and represent most likely parametric norm. Copyright © 2009–2015, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links: LM75B LM75C |
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