LT1259/LT1260
U
TYPICAL APPLICATIO S
RGB Demo Board All Hostile Crosstalk
4. Capacitors C1 and C6 are optional and only needed to
reduce overshoot when EN 1 or EN 2 are activated with
a long inductive ground wire.
0
V
=
12V
S
L
F
S
R
= 100Ω
R = R = 1.6k
R
–20
–40
G
5. The R, G and B amplifiers have slightly different
frequency responses due to different output trace
routing to RF (between pins 3 and 4). All amplifiers
have slightly less bandwidth in PCB #039 than when
measured alone as shown in the Typical AC Perfor-
mance table.
= 10Ω
G
B
R
–60
–80
6. Part-to-part variation can change the peaking by
–100
±0.25dB.
1
10
FREQUENCY (MHz)
100
LT1259/60 • TA06
RGB Demo Board Gain vs Frequency
4
V
R
R
=
12V
S
L
F
= 150Ω
P-DIP PC Board #039
= R = 1.6k
2
0
G
R
G
V+
U1
V–
GND
EN2
R1
EN1
B
C1
–2
–4
–6
R1
R13
R14
R2
C2
R3
R4
R
G1
C3
R15
1
10
FREQUENCY (MHz)
100
R5
R6
LT1259/60 • TA04
C4
C5
G
B
B1
R2
C6
RGB Demo Board Gain vs Frequency
U2
R7
R8
4
2
R16
V
=
5V
S
L
F
C7
R
= 150Ω
R9
R10
R = R = 1.1k
R17
C8
R18
G
R, B
G2 R11
0
R12
G
(408) 432-1900
LT1260 RGB AMPLIFIER
DEMONSTRATION BOARD
–2
–4
–6
B2
LT1259/60 • TA07
1
10
FREQUENCY (MHz)
100
LT1259/60 • TA05
10
Linear [ Linear ]
