Product Overview
The Microchip Technology Inc. MCP9804 is a digital temperature sensor that converts temperatures between -40C and +125C to a digital word with 0.25C/1C (typical/maximum) accuracy. It features user-programmable registers for flexibility, allowing settings like Shutdown or Low-Power modes, and user-defined temperature Alert window limits and critical output limits. The MCP9804 outputs an Alert signal when temperature boundaries are exceeded and offers configurable Alert output polarity (active-low or active-high) for thermostat or interrupt applications. Its industry-standard 100 kHz, 2-wire, SMBus/I2C compatible serial interface supports up to sixteen sensors on a single bus, making it ideal for sophisticated, multi-zone temperature monitoring. Applications include general purpose, industrial, food processing, personal computers and servers, PC peripherals, consumer electronics, and handheld/portable devices.
Product Attributes
- Brand: Microchip Technology Inc.
- Product Name: MCP9804
- Interface: I2C/SMBus Compatible
Technical Specifications
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | |
| Temperature Sensor Accuracy | TACY | -1.0 | 0.25 | +1.0 | C | -40C < TA +125C, VDD = 3.3V (Note 1) | |
| Accuracy Drift | TDRIFT | +0.05 | C | VDD = 3.3V (Note 2) | |||
| Accuracy Repeatability | TREPEAT | 0.0625 | C | 48 hours at 55C, VDD = 3.3V | |||
| Temperature Conversion Time (0.5C/bit) | tCONV | 30 | ms | 33s/sec (typical) | |||
| Temperature Conversion Time (0.25C/bit) | tCONV | 65 | ms | 15s/sec (typical) | |||
| Temperature Conversion Time (0.125C/bit) | tCONV | 130 | ms | 7s/sec (typical) | |||
| Temperature Conversion Time (0.0625C/bit) | tCONV | 250 | ms | 4s/sec (typical) | |||
| Operating Voltage Range | VDD | 2.7 | 5.5 | V | |||
| Operating Current | IDD | 200 | 400 | A | |||
| Shutdown Current | ISHDN | 0.1 | 2 | A | |||
| Power-on Reset (POR) Threshold | VPOR | 2.2 | V | Threshold for falling VDD | |||
| Power Supply Rejection | C/VDD | -0.1 | C/V | VDD = 2.7V to 5.5V, TA = +25C | |||
| Alert Output High-Level Current (leakage) | IOH | 1 | A | VOH = VDD (Active-Low, Pull-up Resistor) | |||
| Alert Output Low-Level Voltage | VOL | 0.4 | V | IOL= 3 mA (Active-Low, Pull-up Resistor) | |||
| Thermal Response (8L-DFN) | tRES | 0.7 | s | Time to 63% (+89C) from +25C (air) to +125C (oil bath) | |||
| Thermal Response (8L-MSOP) | tRES | 1.4 | s | Time to 63% (+89C) from +25C (air) to +125C (oil bath) | |||
| Serial Input/Output High-Level Voltage | VIH | 0.7 VDD | V | ||||
| Serial Input/Output Low-Level Voltage | VIL | 0.3 VDD | V | ||||
| Serial Input Current | IIN | 5 | A | ||||
| SDA Output Low-Level Voltage | VOL | 0.4 | V | IOL= 3 mA | |||
| SDA Output High-Level Current (leakage) | IOH | 1 | A | VOH = 5.5V | |||
| SDA Output Low-Level Current | IOL | 6 | mA | VOL = 0.6V | |||
| Serial Input/Output Hysteresis | VHYST | 0.05 VDD | V | ||||
| Spike Suppression | tSP | 50 | ns | ||||
| Serial Port Frequency | fSCL | 0 | 100 | 400 | kHz | (Note 2, Note 4) | |
| Low Clock Time | tLOW | 4700 | 1300 | ns | (Note 2) | ||
| High Clock Time | tHIGH | 4000 | 600 | ns | (Note 2) | ||
| Rise Time | tR | 1000 | 20 | 300 | ns | ||
| Fall Time | tF | 20 | 300 | 20 | 300 | ns | |
| Data in Setup Time | tSU-DI | 250 | 100 | ns | (Note 3) | ||
| Data in Hold Time | tHD-DI | 0 | 0 | ns | (Note 5) | ||
| Data out Hold Time | tHD-DO | 300 | 200 | 900 | ns | (Note 4) | |
| Start Condition Setup Time | tSU-START | 4700 | 600 | ns | |||
| Start Condition Hold Time | tHD-START | 4000 | 600 | ns | |||
| Stop Condition Setup Time | tSU-STOP | 4000 | 600 | ns | |||
| Bus Free Time | tB-FREE | 4700 | 1300 | ns | |||
| Bus Time-out | tOUT | 25 | 50 | 25 | 50 | ms | |
| Bus Capacitive Load | Cb | 400 | pf | ||||
| Specified Temperature Range | TA | -40 | +125 | C | (Note 1) | ||
| Operating Temperature Range | TA | -40 | +125 | C | |||
| Storage Temperature Range | TA | -65 | +150 | C | |||
| Thermal Resistance (8L-DFN) | JA | 41 | C/W | ||||
| Thermal Resistance (8L-MSOP) | JA | 206 | C/W |
2410121817_MICROCHIP-MCP9804-E-MC_C635046.pdf
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