TK15409
75
Ω
VIDEO LINE DRIVER
FEATURES
s
Internal Y-C Summing Circuit
s
Voltage Gain is 6 dB Fixed
s
Internal 75
Ω
Driver
s
Active High ON/OFF Control
s
Very Low Standby Current (typ. I
STBY
≤
25
µ
A)
s
Very Small Output Capacitor Using SAG Function Pin
s
Very Small Package (SOT23L-8)
s
Single +5 V Power Supply Operation
APPLICATIONS
s
s
s
s
s
s
Video Equipment
Digital Cameras
CCD Cameras
TV Monitors
Video Tape Recorders
LCD Projectors
DESCRIPTION
Operating from a single +5 V supply, the TK15409 is a
video line driver IC that takes standard Y and C analog
inputs and provides a composite analog output for driving
150
Ω
loads (75
Ω
resistor and 75
Ω
cable load). Internal
summing of the Y and C inputs is performed to produce the
composite video output. The luminance (Y) input is
clamped at 1.25 V and amplified 6 dB; the chromanance
(C) input is biased at 2.0 V and amplified 6 dB. The internal
1.5 kΩ SAG function resistor provides gain compensation
for low frequency signals. During standby (Pin 5 grounded),
the TK15409 consumes only 127
µW
of power. Nominal
power dissipation (no input) is typically 90 mW.
The TK15409M is available in the very small SOT23L-8
surface mount package.
Clamp
1.25 V
6 dB
Amp
TK15409
Y-INPUT
C-INPUT
N/C
01S
VCC
GND
SAG
OUTPUT
STANDBY
BLOCK DIAGRAM
BIAS
2.0 V
6 dB
Amp
5 kΩ
Clamp
1.25 V
ORDERING INFORMATION
1.5 kΩ
6 dB
75
Ω
DRIVER
5 kΩ
Reference
&
Standby
TK15409M
Tape/Reel Code
TAPE/REEL CODE
TL: Tape Left
January 2000 TOKO, Inc.
VCC
Page 1
TOKO [ TOKO, INC ]
