GENERAL DESCRIPTION
The SPT9400 is a triple video line driver chip that takes standard Y/C analog inputs and provides simultaneous Y/C and composite video analog outputs for driving 75 Ω lines. Internal summing of the Y and C inputs is performed to produce composite video output. It is possible to achieve composite output on both the Y and CVBS outputs simultaneously by inputting a composite signal on the Y input. The luminance input is clamped at 1.25 V and amplified 6 dB to produce a 2 VP-P (typical) into a series 75 Ω resistor and 75 Ω cable load. The internal 1.5 kΩ resistor provides gain compensation for low frequency signals. The chrominance input is biased at 2.0 V and amplified 6 dB to produce a 1.2 VP-P (typical), into a series 75 Ω resistor and 75 Ω cable load.

FEATURES
• Triple Video Line Driver Chip With Y/C Inputs
• Composite and Y/C Outputs
• RL = 150 Ω (75 Ω Back-Terminated Cable)
• Internal Clamping and Bias Circuitry
• Power-Down Standby Mode
• Very Small 5.0 x 4.4 mm Package
• Low Power Dissipation: 168 mW
• 1 VP-P Input Range
• 6 dB Voltage Gain
• Flat Response fIN = 100 kHz to 10 MHz (typical)
• Crosstalk -40 dB (Typical)
• Single +5 Volt Power Supply

APPLICATIONS
• Video Editing Equipment
• Video Capture/Playback Cards
• Video Tape Recorders
• TV Monitor Sources
• Multimedia PCs