lt1194cs8-trpbf Linear Technology Corporation, lt1194cs8-trpbf Datasheet - Page 10

• Manufacturer Part Number: lt1194cs8-trpbf
• Description: Video Difference Amplifier
• Manufacturer: Linear Technology Corporation

LT1194
APPLICATIO S I FOR ATIO
Murphy Circuits
There are several precautions the user should take when
using the LT1194 in order to realize its full capability.
Although the LT1194 can drive a 50pF capacitive load,
isolating the capacitance with 10 can be helpful. Precau-
tions primarily have to do with driving large capacitive
loads.
10
LT1194 IN DEMO BOARD, C
Driving Capacitive Load
U
U
An Unterminated Cable is
a Large Capacitive Load
3
2
5
L
+
W
–
= 50pF
1
LT1194
8
–5V
5V
7
4
LT1194 • TA12
6
U
COAX
Other precautions include:
1. Use a ground plane (see Design Note 50, High Fre-
2. Do not use high source impedances. The input capaci-
3. PC board socket may reduce stability.
quency Amplifier Evaluation Board).
tance of 2pF, and R
8MHz – 3dB bandwidth.
Large Capacitive Load
A 1X Scope Probe is a
3
2
5
+
–
1
LT1194
8
–5V
5V
LT1194 IN DEMO BOARD, C
Driving Capacitive Load
WITH 10 ISOLATING RESISTOR
7
4
S
6
= 10k for instance, will give an
1X SCOPE
PROBE
LT1194 • TA14
L
= 50pF
LT1194 • TA13