| AD537 | Analog Devices | Integrated Circuit Voltage-to-Frequency Converter |
| AD650 | Analog Devices | Voltage-to-Frequency and Frequency-to-Voltage Converter |
| AD652 | Analog Devices | Monolithic Synchronous Voltage-to-Frequency Converter |
| AD654 | Analog Devices | Low Cost Monolithic Voltage-to-Frequency Converter |
| AD7740 | Analog Devices | 3 V/5 V Low Power, Synchronous Voltage-to-Frequency Converter |
| AD7741 | Analog Devices | New Low-Cost, Single-Supply, Single-Channel Synchronous VFC |
| AD7742 | Analog Devices | New Low-Cost, Single-Supply, MultiChannel Synchronous VFC |
| ADVFC32 | Analog Devices | Low Cost Monolithic Voltage-to-Frequency (V/F) Converter |
| KA331 | Fairchild Semiconductor | Voltage to Frequency Converter |
| LM231 | National Semiconductor | Precision Voltage-to-Frequency Converter |
| LM331 | National Semiconductor | Precision Voltage-to-Frequency Converter |
| LM331 | Fairchild Semiconductor | Voltage to Frequency Converter |
| VFC110 | Texas Instruments | High Frequency Voltage-to-Frequency Converter |
| VFC32 | Texas Instruments | Voltage-to-Frequency and Frequency-to-Voltage Converter |
| VFC320 | Texas Instruments | Voltage-to-Frequency and Frequency-to-Voltage Converter |
| XR4151 | Exar | Voltage-to-Frequency Converter |