AD7416

Data Sheet 10-Bit Digital Temperature Sensor (AD7416) and 4-/1-Channel ADCs AD7416/AD7417/AD7418 01126-001 FEATURES 10-bit ADC with 15 μs and 30 μs conversion times Single and 4 single-ended analog input channels On-chip temperature sensor: −40°C to +125°C On-chip track-and-hold Overtemperature indicator Automatic power-down at the end of a conversion Wide operating supply range: 2.7 V to 5.5 V I2C-compatible serial interface Selectable serial bus address allows connection of up to 8 AD7416/AD7417 devices to a single bus AD7416 is a superior replacement for LM75 APPLICATIONS Data acquisition with ambient temperature monitoring Industrial process control Automotive Battery-charging applications Personal computers GENERAL DESCRIPTION The AD7417 and AD7418 are 10-bit, 4-channel and single-channel ADCs with an on-chip temperature sensor that can operate from a single 2.7 V to 5.5 V power supply. The devices contain a 15 μs successive approximation converter, a 5-channel multiplexer, a temperature sensor, a clock oscillator, a track-and-hold, and a reference (2.5 V). The AD7416 is a temperature-monitoring only device in an 8-lead package. The temperature sensor on the parts can be accessed via multiplexer Channel 0. When Channel 0 is selected and a conversion is initiated, the resulting ADC code at the end of the conversion gives a measurement of the ambient temperature (±1°C at 25°C). On-chip registers can be programmed with high and low temperature limits, and an open-drain o...