LT6551CMS#PBF Linear Technology, LT6551CMS#PBF Datasheet - Page 14
![IC AMP VIDEO QUAD 3.3V 10-MSOP](/photos/1/36/13608/10-msop_05-08-1661_sml.jpg)
LT6551CMS#PBF
Manufacturer Part Number
LT6551CMS#PBF
Description
IC AMP VIDEO QUAD 3.3V 10-MSOP
Manufacturer
Linear Technology
Datasheet
1.LT6550CMS.pdf
(16 pages)
Specifications of LT6551CMS#PBF
Applications
Voltage Feedback
Output Type
Rail-to-Rail
Number Of Circuits
4
-3db Bandwidth
90MHz
Slew Rate
600 V/µs
Current - Supply
8.5mA
Current - Output / Channel
60mA
Voltage - Supply, Single/dual (±)
3 V ~ 12.6 V
Mounting Type
Surface Mount
Package / Case
10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
LT6550/LT6551
Consumer products require generation of YP
nance/chrominance component signals, often from RGB
source content. The YP
and two weighted color difference signals at baseband.
Even with their fixed internal gain resistors, two LT6550s
connected as shown easily implement the required con-
version matrix equations. The Y channel is a weighted
average of the 2X amplified RGB signals and with the
feedback connection of the Y channel output in the second
LT6550 back to the gain-resistor common pin, an implicit
Y subtraction is performed for the chroma channels and
TYPICAL APPLICATIO
14
R
G
B
75Ω
75Ω
75Ω
B
P
R
format has a luminance signal
1
2
3
LT6550
4
450Ω
450Ω
450Ω
U
Y = 0.299R + 0.587G + 0.114B
P
3.3V
B
= 0.565(B – Y)
RGB to YP
10
+
+
+
–
–
–
450Ω
450Ω
450Ω
–3.3V
B
5
P
B
R
P
9
8
7
R
1070Ω
2940Ω
lumi-
549Ω
Component-Video Conversion
the desired unity gain is produced for the Y-channel. The
necessary scaling of the color-difference signals is per-
formed passively by their respective output termination
resistor networks. Since this circuit naturally produces
bipolar chroma signals (±0.35V at the cable load) regard-
less of RGB offset, the simplest implementation is to
power the circuit with ±3.3V split supplies. With an avail-
able output swing of about 5.6V for this supply configura-
tion, the circuit handles video with composite syncs and/
or various offsets without difficulty.
1
2
3
P
f
3dB
LT6550
R
= 0.713(R – Y)
≈ 44MHz
4
450Ω
450Ω
450Ω
3.3V
10
–
+
–
+
–
+
450Ω
450Ω
450Ω
–3.3V
5
9
8
7
105Ω
133Ω
75Ω
261Ω
174Ω
6550/51 TAO3
P
Y
P
R
B
65501fa