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Specifications
Mfr. Part #:
MIC281-7BM6-TR
Package:
SOT-23-6
Key Attributes
Model Number:
MIC281-7BM6-TR
Product Description
Product Overview
The MIC281 is a digital thermal sensor designed for low-cost and small-size applications, capable of measuring the temperature of a remote PN junction. It is optimized for use with inexpensive commodity transistors or embedded thermal diodes found in CPUs and FPGAs. The device features an I2C and SMBus 2.0-compatible serial interface with voltage-tolerant I/Os and a low power shutdown mode. Its advanced analog front-end and integrating A/D converter provide excellent noise rejection for accurate remote sensing.
Product Attributes
- Brand: Microchip Technology Inc.
- Package Type: SOT23-6
Technical Specifications
| Parameter | Symbol | Min. | Typ. | Max. | Units | Conditions |
| Power Supply | ||||||
| Power Supply Voltage | VDD | 3.0 | 3.6 | V | Operating Rating | |
| Power Supply Voltage | VDD | +3.8 | V | Absolute Maximum Rating | ||
| Supply Current (Normal Mode) | IDD | 0.23 | 0.4 | mA | T1 open; CLK = DATA = High | |
| Supply Current (Shutdown Mode) | IDD | 9 | µA | T1 open; Note 2; CLK = 100 kHz | ||
| Power-on Reset Time | tPOR | 200 | µs | VDD > VPOR | ||
| Power-on Reset Voltage | VPOR | 2.65 | 2.95 | V | All registers reset to default values; A/D conversions initiated | |
| Temperature-to-Digital Converter Characteristics | ||||||
| Accuracy (0°C to 100°C) | ±1 | ±3 | °C | 0°C ≤ TD ≤ 100°C, 0°C < TA < 85°C; 3.15V < VDD < 3.45V | ||
| Accuracy (-40°C to 125°C) | ±2 | ±5 | °C | -40°C ≤ TD ≤ 125°C, 0°C < TA < 85°C; 3.15V < VDD < 3.45V | ||
| Conversion Time | tCONV | 200 | 240 | ms | - | |
| Remote Temperature Input, T1 | ||||||
| Current into External Diode | IF | 192 | 400 | µA | T1 forced to 1.0V, high level | |
| Low level | 7 | 12 | - | - | ||
| Serial Data I/O Pin, DATA | ||||||
| Low Output Voltage | VOL | 0.3 | V | IOL = 3 mA | ||
| Low Output Voltage | VOL | 0.5 | V | IOL = 6 mA | ||
| Low Input Voltage | VIL | 0.8 | V | 3V ≤ VDD ≤ 3.6V | ||
| High Input Voltage | VIH | 2.1 | 5.5 | V | 3V ≤ VDD ≤ 3.6V | |
| Input Capacitance | CIN | 10 | pF | Note 2 | ||
| Input Current | ILEAK | ±1 | µA | - | ||
| Serial Clock Input, CLK | ||||||
| Low Input Voltage | VIL | 0.8 | V | 3V ≤ VDD ≤ 3.6V | ||
| High Input Voltage | VIH | 2.1 | 5.5 | V | 3V ≤ VDD ≤ 3.6V | |
| Input Capacitance | CIN | 10 | pF | Note 2 | ||
| Input Current | ILEAK | ±1 | µA | - | ||
| Serial Interface Timing | ||||||
| CLK (Clock) Period | t1 | 2.5 | µs | - | ||
| Data-In Set-Up Time to CLK High | t2 | 100 | ns | - | ||
| Data-Out Stable after CLK Low | t3 | 300 | ns | - | ||
| Data-Low Set-Up Time to CLK Low | t4 | 100 | ns | Start Condition | ||
| Data-High Hold Time after CLK High | t5 | 100 | ns | Stop Condition | ||
| Bus Timeout | tTO | 25 | 30 | 35 | ms | - |
2410301801_MICROCHIP-MIC281-7BM6-TR_C19582582.pdf
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