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TMP435 Datasheet(PDF) 3 Page - Texas Instruments |
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TMP435 Datasheet(HTML) 3 Page - Texas Instruments |
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3 / 35 page  TMP435 www.ti.com SBOS495A – MARCH 2010 – REVISED APRIL 2010 ELECTRICAL CHARACTERISTICS At TA = –40°C to +125°C and VS = 2.7V to 5.5V, unless otherwise noted. TMP435 PARAMETER CONDITIONS MIN TYP MAX UNIT TEMPERATURE ERROR Local Temperature Sensor TELOCAL TA = –40°C to +125°C ±1.25 ±2.5 °C TA = +0°C to +100°C, VS = 3.3V ±0.25 ±1 °C Remote Temperature Sensor(1) TEREMOTE TA = 0°C to +100°C, TDIODE = –40°C to +150°C, VS = 3.3V ±0.25 ±1 °C TA = –40°C to +100°C, TDIODE = –40°C to +150°C, VS = 3.3V ±0.5 ±1.5 °C TA = –40°C to +125°C, TDIODE = –40°C to +150°C ±3 ±5 °C vs Supply (Local/Remote) VS = 2.7V to 5.5V ±0.2 ±0.5 °C/V TEMPERATURE MEASUREMENT Conversion Time (per channel) Local Channel 12 15 17 ms Remote Channel RC = 1 97 126 137 ms MBeta Correction Enabled (2) RC = 0 36 47 52 ms RC = 1 72 93 100 ms MBeta Correction Disabled (3) RC = 0 33 44 47 ms Resolution Local Channel 12 Bits Remote Channel 12 Bits Remote Sensor Source Currents High 120 mA Series Resistance (beta correction) (4) Medium High 60 mA Medium Low 12 mA Low 6 mA Remote Transistor Ideality Factor n TMP435 optimized ideality factor 1.000(2) 1.008(3) Beta Correction Range b 0.1 27 SMBus INTERFACE Logic Input High Voltage (SCL, SDA) VIH 2.1 V Logic Input Low Voltage (SCL, SDA) VIL 0.8 V Hysteresis 500 mV SMBus Output Low Sink Current 6 mA SDA Output Low Voltage VOL IOUT = 6mA 0.15 0.4 V Logic Input Current 0 ≤ VIN ≤ 6V –1 +1 mA SMBus Input Capacitance (SCL, SDA) 3 pF SMBus Clock Frequency 3.4 MHz SMBus Timeout 25 32 35 ms SCL Falling Edge to SDA Valid Time 1 ms DIGITAL OUTPUTS Output Low Voltage VOL IOUT = 6mA 0.15 0.4 V High-Level Output Leakage Current IOH VOUT = VS 0.1 1 mA ALERT/THERM2 Output Low Sink Current ALERT/THERM2 Forced to 0.4V 6 mA THERM Output Low Sink Current THERM2 Forced to 0.4V 6 mA (1) Tested with less than 5 Ω effective series resistance and 100pF differential input capacitance. TA is the ambient temperature of the TMP435. TDIODE is the temperature at the remote diode sensor. (2) Beta correction configuration set to '1000' and sensor is GND collector-connected (PNP collector to ground). (3) Beta correction configuration set to '0111' or sensor is diode-connected (base shorted to collector). (4) If beta correction is disabled ('0111'), then up to 1k Ω of series line resistance is cancelled; if beta correction is enabled ('1xxx'), up to 300 Ω is cancelled. Copyright © 2010, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Link(s): TMP435 |
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