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TMP431CDGKT Datasheet(PDF) 6 Page - Texas Instruments |
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TMP431CDGKT Datasheet(HTML) 6 Page - Texas Instruments |
6 / 40 page TMP431, TMP432 SBOS441G – SEPTEMBER 2009 – REVISED DECEMBER 2015 www.ti.com 6.5 Electrical Characteristics at TA = –40°C to 125°C and V+ = 2.7 V to 5.5 V (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT TEMPERATURE ERROR TA = –40°C to 125°C ±1.25 ±2.5 TELOCAL Local temperature sensor °C TA = 0°C to 100°C, V+ = 3.3 V ±0.25 ±1 TA = 0°C to 100°C, TDIODE = –40°C to 150°C, V+ = 3.3 V ±0.25 ±1 TEREMOTE Remote temperature sensor (1) TA = –40°C to 100°C, TDIODE = –40°C to 150°C, V+ = 3.3 V ±0.5 ±1.5 °C TA = –40°C to 125°C, TDIODE = –40°C to 150°C ±3 ±5 vs Supply (Local/Remote) V+ = 2.7 V to 5.5 V ±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 Beta correction enabled (2) RC = 0 36 47 52 RC = 1 72 93 100 ms Beta correction disabled (3) RC = 0 33 44 47 TEMPERATURE MEASUREMENT RESOLUTION Local channel 12 Bits Remote channel 12 Bits TEMPERATURE MEASUREMENT REMOTE SENSOR SOURCE CURRENTS High 120 μA Series resistance (beta correction) (4) Medium-high 60 μA Medium-low 12 μA Low 6 μA 1.000(2) η Remote transistor ideality factor TMP43x optimized ideality factor 1.008(3) β Beta correction range 0.1 27 SMBus INTERFACE Logic input high voltage VIH 2.1 V (SCL, SDA) VIL Logic input low voltage (SCL, SDA) 0.8 V Hysteresis 500 mV SMBus output low sink current 6 mA VOL SDA output low voltage IOUT = 6 mA 0.15 0.4 V Logic input current 0 ≤ VIN ≤ 6 V –1 1 μA SMBus input capacitance 3 pF (SCL, SDA) SMBus clock frequency 3.4 MHz SMBus timeout 25 32 35 ms SCL falling edge to SDA valid time 1 μs DIGITAL OUTPUTS VOL Output low voltage IOUT = 6 mA 0.15 0.4 V IOH High-level output leakage current VOUT = V+ 0.1 1 μA ALERT/THERM2 output low ALERT/THERM2 forced to 0.4 V 6 mA sink current THERM output low sink current THERM2 forced to 0.4 V 6 mA (1) Tested with less than 5- Ω effective series resistance and 100-pF differential input capacitance. TA is the ambient temperature of the TMP43x. 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 1-k Ω of series line resistance is cancelled; if beta correction is enabled (1xxx), up to 300 Ω is cancelled. 6 Submit Documentation Feedback Copyright © 2009–2015, Texas Instruments Incorporated Product Folder Links: TMP431 TMP432 |
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