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SPT9400 Datasheet, PDF (1/7 Pages) List of Unclassifed Manufacturers – TRIPLE VIDEO DRIVER WITH Y/C & COMPOSITE OUTPUT | |||
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SPT9400
TRIPLE VIDEO DRIVER WITH Y/C & COMPOSITE OUTPUT
FEATURES
⢠Triple Video Line Driver Chip With Y/C Inputs
⢠Composite and Y/C Outputs
⢠RL = 150 ⦠(75 ⦠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
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 ⦠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 simulta-
neously 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 ⦠resistor and 75 â¦
cable load. The internal 1.5 k⦠resistor provides gain com-
pensation 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 ⦠resistor and 75 ⦠cable load.
The SPT9400 features a standby (active low) mode that
draws only 113 µW of power. Nominal power dissipation (no
input) is typically 168 mW. It requires a single +5 V supply,
operates over the commercial temperature range (0 to +70 °C)
and is available in a very small (5.0 x 4.4 mm) 12-lead Shrink
Small Outline Package (SSOP).
BLOCK DIAGRAM
+VCC
Y Input
Clamp
1.25 V
Driver
5 k⦠5 kâ¦
1.5 kâ¦
Y Output
Y Feedback
Standby
Driver
Reference
+
Standby
Logic
Clamp
1.25 V
5 kâ¦
5 kâ¦
1.5 kâ¦
CVBS Output
CVBS Feedback
C Input
Bias
2.0 V
Driver
C Output
GND
Signal Processing Technologies, Inc.
4755 Forge Road, Colorado Springs, Colorado 80907, USA
Phone: (719) 528-2300 FAX: (719) 528-2370
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