MICROCHIP MCP9804-E MS AEC-Q100 Automotive Temp Sensor, ±0.25°C Accuracy, I²C, for Battery Management/ADAS
The Microchip MCP9804-E MS is a high-performance digital temperature sensor from Microchip Technology Inc., a global leader in semiconductor solutions. This precision device combines an analog-to-digital converter (ADC), non-volatile memory for calibration, and an I2C interface in a compact package. With ultra-high accuracy, low power consumption, and programmable alarms, it provides reliable temperature monitoring for industrial control, consumer electronics, medical equipment, automotive systems, and IoT applications.
| Category | Parameter | Value | Notes |
|---|---|---|---|
| Temperature Measurement Performance | Measurement Range | -40 °C ~ +125 °C | Covers most industrial, consumer, and automotive scenarios |
| Measurement Accuracy | ±0.25 °C (Typical, -20 °C ~ +100 °C); ±0.5 °C (Max, -40 °C ~ +125 °C) | Ultra-high precision for critical monitoring | |
| Resolution | 0.0625 °C (Programmable, up to 13-bit ADC) | Fine resolution for subtle temperature changes | |
| Conversion Time | 10 ms (Typical, at 0.0625 °C Resolution) | Fast response for real-time monitoring | |
| Power & Interface | Supply Voltage Range | 1.7 V ~ 3.6 V | Wide voltage compatibility |
| Operating Current | 200 µA (Active Mode); 0.1 µA (Shutdown Mode) | Ultra-low power consumption | |
| Communication Interface | I2C Bus (100 kHz Standard Mode, 400 kHz Fast Mode) | Supports multi-device cascading | |
| Alarm & Calibration | Alarm Function | Programmable Over/Under-Temperature Alarms | Open-drain alarm output |
| Hysteresis | Programmable (0.5 °C, 1.0 °C, 2.0 °C, 4.0 °C) | Prevents alarm chattering | |
| Calibration | Factory-Calibrated with Non-Volatile Memory | No user calibration required | |
| Mechanical & Environmental | Package Type | 8-pin SOIC (3.91 mm × 4.90 mm) / 8-pin TSSOP (3.00 mm × 3.00 mm) | Compact footprints |
| Operating Humidity Range | 0% ~ 100% Relative Humidity (Non-Condensing) | Stable performance in high-humidity environments |
- Ultra-High Measurement Accuracy: ±0.25 °C typical accuracy in -20 °C ~ +100 °C range, superior to standard sensors.
- Programmable High Resolution: 13-bit ADC resolution (0.0625 °C) with optional lower resolutions for optimization.
- Ultra-Low Power Consumption: 200 µA active current and 0.1 µA shutdown current for extended battery life.
- Flexible I2C Interface: Supports 100 kHz/400 kHz modes with 8 programmable addresses for multi-device cascading.
- Programmable Alarm Functions: Over/under-temperature alarms with programmable hysteresis and open-drain output.
- Factory-Calibrated Reliability: Industrial-grade temperature range with robust package designs.
- Wide Voltage Compatibility: 1.7 V ~ 3.6 V supply range for easy integration with various power systems.
Used in PLCs and process control systems to monitor critical components (motor windings, power modules) with ±0.25 °C accuracy. Ideal for semiconductor manufacturing and food processing.
Applied in smartphones, laptops, and smart home devices for temperature monitoring and control. Extends battery life in wireless sensors.
Meets medical-grade requirements in portable devices (blood glucose monitors) and clinical equipment (incubators) with high accuracy and immediate alarm alerts.
Used in cabin climate control and EV battery management systems, with -40 °C ~ +125 °C range for extreme environments.
Enables years of operation on single coin cell batteries in wireless sensor networks and smart agriculture applications.
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