The document introduces the features and characteristics of ADS1206 and ADS1207 low-cost, high-performance, synchronous voltage-to-frequency converters (VFC), including synchronous operation, external clock setting, maximum input frequency, selectable high-impedance buffered input, 2.5V reference voltage, high-current output driver, 3.3V or 5V power supply, low power consumption, alternate source for AD7740, -40°C to +85°C operating temperature range.