Application
Resistive Thermal Device (RTD)
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2-Channel ADC Measures Differential Temperature from Bridge Configured RTDs 5V Powered, Linearized Platinum RTD 0°C to 400°C ±0.05°C Signal Conditioner Battery Powered (Li-Ion) Platinum RTD Signal Conditioner with Curvature Correction High Resolution 0°C to 220°C Platinum RTD Temperature Digitizer using 5V Supply Kelvin-Sensed Temperature Sensor Amplifier for –50°C to 150°C Platinum RTD from 10V Reference Linearized Platinum Resistance Thermometer with ±0.025°C Accuracy Over 0 to 100°C Measuring Seven RTD Temperatures with One Reference Resistor and One Reference Current Platinum RTD Digitizer Accurate within 1° Over 0°C to 100°C Platinum RTD Signal Conditioner with Curvature Correction Platinum RTD Signal Conditioner with Curvature Correction Remote Half Bridge Digitizer Platinum RTD with Noise Suppression on Reference RTD and Thermocouple Remote Temperature Digitizer Single 2.7V to 20V Supply Current Source for –50°C to 600°C Platinum RTD Single 5V Supply Linearized 0°C to 400°C Platinum RTD Amplifier Single 5V Supply Precision Linearized 0°C to 400°C Platinum RTD Signal Conditioner
2-Channel ADC Measures Differential Temperature from Bridge Configured RTDs
The LTC2402 is a 2-channel 2.7V to 5.5V micropower 24-bit analog-to-digital converters with an integrated oscillator, 4ppm INL and 0.6ppm RMS noise. These ultrasmall devices use delta-sigma technology and a new digital filter architecture that settles in a single cycle. This eliminates the latency found in conventional DS converters and simplifies multiplexed applications. This example uses switched excitation to reduce the standby current and cancel offset and low frequency noise.