SPT9400 Datasheet, PDF (1/7 Pages) List of Unclassifed Manufacturers – TRIPLE VIDEO DRIVER WITH Y/C & COMPOSITE OUTPUT

SPT9400
TRIPLE VIDEO DRIVER WITH Y/C & COMPOSITE OUTPUT
FEATURES
• Triple Video Line Driver Chip With Y/C Inputs
• Composite and Y/C Outputs
• R_L = 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 V_P-P Input Range
• 6 dB Voltage Gain
• Flat Response f_IN = 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 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 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 V_P-P (typical) into a series 75 Ω resistor and 75 Ω
cable load. The internal 1.5 kΩ 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 V_P-P
(typical), into a series 75 Ω resistor and 75 Ω 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 kΩ 5 kΩ
1.5 kΩ
Y Output
Y Feedback
Standby
Driver
Reference
+
Standby
Logic
Clamp
1.25 V
5 kΩ
5 kΩ
1.5 kΩ
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: [phone] FAX: [phone]