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TMP423AIDCNR Datasheet(PDF) 3 Page - Texas Instruments |
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TMP423AIDCNR Datasheet(HTML) 3 Page - Texas Instruments |
3 / 30 page www.ti.com ELECTRICAL CHARACTERISTICS TMP421 TMP422 TMP423 SBOS398B – JULY 2007 – REVISED MARCH 2008 At TA = –40°C to +125°C and VS = 2.7V to 5.5V, unless otherwise noted. TMP421, TMP422, TMP423 PARAMETER CONDITIONS MIN TYP MAX UNIT TEMPERATURE ERROR Local Temperature Sensor TELOCAL TA = –40°C to +125°C ±1.25 ±2.5 °C TA = +15°C to +85°C, VS = 3.3V ±0.25 ±1.5 °C Remote Temperature Sensor(1) TEREMOTE TA = +15°C to +85°C, TD = –40°C to +150°C, VS = 3.3V ±0.25 ±1 °C TA = –40°C to +100°C, TD = –40°C to +150°C, VS = 3.3V ±1 ±3 °C TA = –40°C to +125°C, TD = –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) 100 115 130 ms Resolution Local Temperature Sensor (programmable) 12 Bits Remote Temperature Sensor 12 Bits Remote Sensor Source Currents High Series Resistance 3k Ω Max 120 µA Medium High 60 µA Medium Low 12 µA Low 6 µA Remote Transistor Ideality Factor η TMP421/22/23 Optimized Ideality Factor 1.008 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 µA SMBus Input Capacitance (SCL, SDA) 3 pF SMBus Clock Frequency 3.4 MHz SMBus Timeout 25 30 35 ms SCL Falling Edge to SDA Valid Time 1 µs DIGITAL INPUTS Input Capacitance 3 pF Input Logic Levels Input High Voltage VIH 0.7(V+) (V+)+0.5 V Input Low Voltage VIL –0.5 0.3(V+) V Leakage Input Current IIN 0V ≤ VIN ≤ VS 1 µA POWER SUPPLY Specified Voltage Range VS 2.7 5.5 V Quiescent Current IQ 0.0625 Conversions per Second 32 38 µA Eight Conversions per Second 400 525 µA Serial Bus Inactive, Shutdown Mode 3 10 µA Serial Bus Active, fS = 400kHz, Shutdown Mode 90 µA Serial Bus Active, fS = 3.4MHz, Shutdown Mode 350 µA Undervoltage Lockout UVLO 2.3 2.4 2.6 V Power-On Reset Threshold POR 1.6 2.3 V TEMPERATURE RANGE Specified Range –40 +125 °C Storage Range –60 +130 °C Thermal Resistance, SOT23 θ JA 100 °C/W (1) Tested with less than 5 Ω effective series resistance and 100pF differential input capacitance. Copyright © 2007–2008, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Link(s): TMP421 TMP422 TMP423 |
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