MAX7500MUA+T

The MAX7500MUA+T is a digital temperature sensor and thermal watchdog with bus lock-up protection in 8 pin µMAX package. This device accurately measures temperature and provide an overtemperature alarm/interrupt/shutdown output. It converts temperature measurements to digital form using high resolution, sigma delta ADC and communicates through an I2C compatible 2-wire serial interface. The MAX7500 accepts standard I2C commands to read data, set overtemperature alarm (OS) trip thresholds and configure other characteristics. The 2-wire serial interface accepts standard write byte, read byte, send byte and receive byte commands to read temperature data and configure the behaviour of open-drain overtemperature shutdown output. The MAX7500 has three address select lines. The 3V to 5.5V supply voltage range, low 250μA supply current and lock-up protected I2C compatible interface make it ideal for wide range of applications including PCs, electronic test equipment and office electronics.

• 9bit resolution with 100ms conversion time
• Operating temperature range from -55°C to 125°C
• Hardware reset for added protection
• Integrates timeout feature that offers protection against I2C bus lock-ups
• Shutdown supply current of 3μA
• Accuracy (6-σ) of ±2°C at 25°C ≤ TA ≤ +100°C and ±3°C at -55°C ≤ TA ≤ +125°C
• Separate open-drain OS output operates as interrupt or comparator/thermostat input
• Register readback capability, improved LM75 second source
• Serial clock frequency range from DC to 400KHz
• Accuracy (3-σ) of +1.5°C at -25°C ≤ TA ≤ +100°C and +2.0°C at 55°C ≤ TA ≤ +125°C

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