MCP9808 Digital Temperature Sensor
The MCP9808 is a digital temperature sensor from Microchip Technology Inc. that converts temperature to a digital word with high accuracy, suitable for general, industrial, food processing, personal computer, PC peripheral, consumer electronics, and handheld/portable device applications. It offers user-programmable features such as temperature limits, measurement resolution, and alarm outputs, providing flexibility for various temperature monitoring needs. The sensor utilizes a 2-wire interface compatible with I2C/SMBus, allowing for control of multiple sensors on a single bus, making it ideal for precision multi-zone temperature monitoring.
Product Attributes
- Brand: Microchip Technology Inc.
- Origin: Not specified
- Material: Not specified
- Color: Not specified
- Certifications: Not specified
Technical Specifications
| Parameter | Symbol | Min | Typical | Max | Unit | Condition |
|---|---|---|---|---|---|---|
| Temperature Sensor Accuracy | ||||||
| Temperature Accuracy | TACY | -0.5 | ±0.25 | +0.5 | °C | -20°C < TA ≤ +100°C, VDD = 3.3V |
| Temperature Accuracy | TACY | -1.0 | ±0.25 | +1.0 | °C | -40°C < TA ≤ +125°C, VDD = 3.3V |
| Temperature Conversion Time | ||||||
| 0.5°C/bit | tCONV | - | 30 | - | ms | 33s/sec (Typical) |
| 0.25°C/bit | tCONV | - | 65 | - | ms | 15s/sec (Typical) |
| 0.125°C/bit | tCONV | - | 130 | - | ms | 7s/sec (Typical) |
| 0.0625°C/bit | tCONV | - | 250 | - | ms | 4s/sec (Typical) |
| Power Supply | ||||||
| Operating Voltage Range | VDD | 2.7 | - | 5.5 | V | |
| Operating Current | IDD | - | 200 | 400 | µA | |
| Shutdown Current | ISHDN | - | 0.1 | 2 | µA | |
| Power-on Reset (POR) | VPOR | - | 2.2 | - | V | Falling VDD Threshold |
| Power Supply Rejection | Δ°C/ΔVDD | -0.1 | - | - | °C/V | VDD = 2.7V to 5.5V, TA = +25°C |
| Alarm Output (Open-Drain) | ||||||
| High-Level Current (Leakage) | IOH | - | - | 1 | µA | VOH = VDD (Active Low, Pull-up Resistor) |
| Low-Level Voltage | VOL | - | - | 0.4 | V | IOL= 3 mA (Active Low, Pull-up Resistor) |
| Thermal Response | ||||||
| 8-Pin DFN | tRES | - | 0.7 | - | s | Time to 63% (+89°C) from +25°C (Air) to +125°C (Oil Bath) |
| 8-Pin MSOP | tRES | - | 1.4 | - | s | Time to 63% (+89°C) from +25°C (Air) to +125°C (Oil Bath) |
| Digital I/O Pin Characteristics | ||||||
| Serial Input/Output (SCL, SDA, A0, A1, A2) Input High Voltage | VIH | 0.7 VDD | - | VDD | V | |
| Serial Input/Output (SCL, SDA, A0, A1, A2) Input Low Voltage | VIL | GND | - | 0.3 VDD | V | |
| Serial Input/Output (SCL, SDA, A0, A1, A2) Input Current | IIN | - | - | ±5 | µA | |
| Output (SDA) Low-Level Voltage | VOL | - | - | 0.4 | V | IOL= 3 mA |
| Output (SDA) High-Level Current (Leakage) | IOH | - | - | 1 | µA | VOH = 5.5V |
| Output (SDA) Low-Level Current | IOL | 6 | - | - | mA | VOL = 0.6V |
| SDA and SCL Input Hysteresis | VHYST | - | 0.05 VDD | - | V | |
| Spike Pulse Suppression | tSP | - | - | 50 | ns | |
| Capacitance | CIN | - | 5 | - | pF | |
| Temperature Characteristics | ||||||
| Specified Temperature Range | TA | -40 | - | +125 | °C | (Note 1) |
| Operating Temperature Range | TA | -40 | - | +125 | °C | |
| Storage Temperature Range | TA | -65 | - | +150 | °C | |
| Package Thermal Resistance | ||||||
| 8-Pin DFN | θJA | - | 68 | - | °C/W | |
| 8-Pin MSOP | θJA | - | 211 | - | °C/W | |
| Sensor Serial Interface Timing Specifications (2-Wire SMBus/Standard Mode I2C Compatible) | ||||||
| Serial Port Clock Frequency | fSC | 0 | - | 400 | kHz | (Note 2 & 4) |
| Clock Low Time | tLOW | 1300 | - | - | ns | (Note 2) |
| Clock High Time | tHIGH | 600 | - | - | ns | (Note 2) |
| Rise Time | tR | 20 | - | 300 | ns | |
| Fall Time | tF | 20 | - | 300 | ns | |
| Data Input Setup Time | tSU-DI | 100 | - | - | ns | (Note 3) |
| Data Input Hold Time | tHD-DI | 0 | - | - | ns | (Note 5) |
| Data Output Hold Time | tHD-DO | 200 | - | 900 | ns | (Note 4) |
| Start Condition Setup Time | tSU-START | 600 | - | - | ns | |
| Start Condition Hold Time | tHD-START | 600 | - | - | ns | |
| Stop Condition Setup Time | tSU-STOP | 600 | - | - | ns | |
| Bus Free Time | tB-FREE | 1300 | - | - | ns | |
| Timeout | tOUT | 25 | - | 35 | ms | |
| Bus Capacitive Load | Cb | - | - | 400 | pf | |
1810010808_MICROCHIP-MCP9808T-E-MS_C129490.pdf
Please Use Our Online Inquiry Contact Form Below If You Have Any Questions, Our Team Will Get Back To You As Soon As Possible
