LT1809 Linear Technology, LT1809 Datasheet - Page 8

• Manufacturer Part Number: LT1809
• Description: 180MHz/ 350V/ms Rail-to-Rail Input and Output Low Distortion Op Amp
• Manufacturer: Linear Technology

RELATED PARTS
LT1809
TYPICAL APPLICATIO
Single Supply Video Line Driver
The LT1809 is a wideband rail-to-rail op amp with high
output current that allows it to drive video signals in low
supply applications. Figure 1 depicts a single supply video
line driver with AC coupling to minimize the quiescent
power dissipation. Resistors R1 and R2 are used to level-
shift the input and output to provide the largest signal
swing. The gain of two is set up with R3 and R4 to restore
the signal at V
PART NUMBER
LT1632/LT1633
LT1630/LT1631
LT1215/LT1216
8
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] FAX: [phone] www.linear-tech.com
OUT
which is attenuated by 6dB due to the
DESCRIPTION
Dual/Quad 45MHz, 45V/ s Rail-to-Rail Input and Output Op Amps
Dual/Quad 30MHz, 10V/ s Rail-to-Rail Input and Output Op Amps
Dual/Quad 23MHz, 50V/ s Single Supply Precision Op Amps
V
IN
R
75
T
33 F
C1
U
R2
5k
R1
5k
Figure 1. Single Supply Video Line Driver
+
3
2
R3
1k
C2
150 F
+
–
LT1809
5V
7
4
R4
1k
6
matching of the 75 line with the back-terminated resis-
tor, R5. The back termination will eliminate any reflection
of the signal that comes from the load. The input termina-
tion resistor, R
the incoming line is necessary. The values of C1, C2 and
C3 are selected to minimize the droop of the luminance
signal. In some less stringent requirements, the value of
capacitors could be reduced.
1000 F
C3
75
R5
COMMENTS
High DC Accuracy, 1.35mV V
Max Supply Current 5.2mA per Amplifier
High DC Accuracy, 525 V V
Max Supply Current 4.4mA per Amplifier
Input Common Mode Includes Ground, 450 V V
6 V/ C Max Drift, Max Supply Current 6.6mA per Amplifier
COAX CABLE
T
, is optional—it is used only if matching of
75
R
75
LOAD
LINEAR TECHNOLOGY CORPORATION 2000
1809 TA02
OS(MAX)
1809i LT/TP 0100 4K • PRINTED IN USA
V
OS(MAX)
OUT
, 70mA Output Current,
, 70mA Output Current,
OS(MAX)
,