BUY AD537SD https://www.utsource.net/itm/p/1145579.html
Integrated Circuit Voltage-to-Frequency Converter
Description: The AD537SD is a monolithic, low cost, precision, temperature-compensated, voltage-to-frequency converter. Features: Low Cost Wide Supply Range: 4.5V to 18V Low Temperature Coefficient: 0.01%/°C Low Input Offset Voltage: 10μV Low Input Offset Voltage Drift: 0.2μV/°C Low Output Frequency Drift: 0.001%/°C Low Output Frequency Error: 0.005% Low Output Frequency Noise: 0.1Hz High Output Frequency: 1MHz High Output Current: 10mA Applications: Temperature Measurement Process Control Frequency Synthesis Frequency-to-Voltage Conversion Frequency-to-Current Conversion Frequency-to-Digital Conversion (For reference only)