Here is the English description of the TL494CDR2G chip:
The TL494CDR2G is a voltage-controlled oscillator from Texas Instruments.
Key Features:
Common Applications:
Benefits include straightforward frequency control over a broad range in an industry standard package.
Well-suited for applications requiring a versatile oscillator where frequency should be easily set or varied via an input voltage.
In summary, the TL494CDR2G provides stable oscillation that can be controlled from 0.5Hz to 300kHz with a voltage input.