SAA4978H is a Picture Improved Combined Network (PICNIC) integrated circuit with 9-bit analog-to-digital conversion, automatic gain control, time base correction and sample rate conversion.
The SAA4978H is a monolithic integrated circuit suitable for 1f/4 or 2f/4 applications containing a large variety of picture improvement functions. It combines analog-to-digital and digital-to-analog conversion for YUV signals, digital processing, line-locked clock regeneration, and an 80C51 microcontroller core in one IC.
Key features include triple 9-bit Analog-to-Digital Converters (ADC), a 4 MHz notch filter, non-linear phase filters after ADC, selectable I/O interfaces (4:2:2 or 4:1:1), time base correction, histogram analysis and modification, subtitle detection, black bar detection, line memory based noise reduction, dynamic peaking, and an embedded microcontroller.
| Digital supply voltage (Vppp) | 3.0 to 3.6 V |
|---|---|
| Analog supply current (typical) | 180 mA |
| Digital supply current (typical) | 270 mA |
| Clock frequency (fak) | up to 16 MHz |
| Signal-to-noise ratio (S/N) | 50 dB |
The device comes in a plastic quad flat package with 160 leads.
The integrated circuit includes an 80C51 microcontroller core.
Yes, the device features subtitle detection as one of its functional blocks.