DEVICE DESCRIPTION
The GF9102A is a linear phase FIR digital filter that is usable in a variety of video signal processing applications. The device contains three separate fixed coefficient filters and can be operated in three basic modes: 53 tap low pass filter, 9 tap chroma bandpass filter or 21 tap chroma bandpass filter.

FEATURES
• improved performance over TMC2242 in applications not requiring 1:1 low pass filtering
• low power (60mA typical at ƒ = 20MHz)
• 40 MHz maximum clock rate
• single device exceeds CCIR 601 lowpass filter requirements
• true unity gain (0.0 dB) at DC
• reduced output ringing with constant input in interpolation mode
• built-in TRS code protection
• 12 bit inputs and 16 bit outputs in 2s complement signed or unsigned formats
• user-selectable 8 to 16 bit output rounding
• can also be operated as a 9 or 21 tap chroma bandpass filter under user control
• single +5 V power supply
• three state outputs

APPLICATIONS
• CCIR 601-compliant oversampling video A/D and D/A conversion
• 2:1 interpolation and decimation
• 4:2:2 to 4:4:4 format conversion
• Chroma bandpass filtering