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Humidity Sensor Interface
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1MHz Pulse Width Modulator 8 Second to 8.5 Minute Low Frequency Clock (Intervalometer for Time-Lapse Photography) A Galvanically Isolated Thermistor Digitizer Acoustic Thermometry Measures Temperature To 0.1 Degree Clock Tunable, Filter Based Sine Wave Generator Clock Tuned, Highly Selective Notch Filter Consecutive Test Sequencer Crossover Gate—Break-Before-Make Interval Timer Delayed One Shot Energy-Tripped Circuit Breaker Trips After a Time Interval That Varies as a Function of Sensed Load Current Isolated PWM (5% to 95%) Controller Light to Frequency Converter LTC6945 Wideband Point-to-Point Radio Local Oscillator LTC6946-2 Driving a Passive Downconverting Mixer Motor Speed/Direction Control for Full H-Bridge (Locked Anti-Phase Drive) On-Time Programmable Pulsed Solenoid Driver Platinum RTD Digitizer Accurate within 1° Over 0°C to 100°C Pulse Staircase Ramp Generator Quadrature Sine Wave Oscillator. Voltage Controlled Frequency Range from 2Hz to 18kHz with 1VP-P Constant Output Amplitude Ratiometric Sensor to Pulse Width, Non-Inverting Response Relative Humidity Sensor Digitizer-Charge Pump Based Relative Humidity Sensor Digitizer-Hetrodyne Based Relative Humidity Sensor Digitizer-Time Domain Bridge Based Simple Diode Temperature Sensor With Frequency Output Simplified DC Motor Torque Control Temperature to Frequency Converter Voltage Controlled Oscillator with 16:1 Frequency Range
Relative Humidity Sensor Digitizer-Time Domain Bridge Based
Humidity Transducer Digitizer Has Grounded Sensor, 1% Accuracy; Trim Scheme Allows Low Tolerance Sensors. Clocked Q1A-Q1B Configurations Produce Ramp Outputs. Q1A Ramp Slope Varies with Humidity Sensor Value, Q1B Ramp Represents Sensor’s Offset (0% RH does not equal 0pF). C1, C2 Digitize Ramp Times. Gate Extracts Time Difference, Presents 0 to 100 Counts Out for 0% to 100% Relative Humidity