LT6553 Linear Technology Corporation, LT6553 Datasheet

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LT6553

Manufacturer Part Number
LT6553
Description
650mhz Gain Of 2 Triple Video Amplifier
Manufacturer
Linear Technology Corporation
Datasheet

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FEATURES
TYPICAL APPLICATIO
APPLICATIO S
650MHz –3dB Small Signal Bandwidth
400MHz –3dB 2V
150MHz 0.1dB Bandwidth
High Slew Rate: 2500V/ s
Fixed Gain of 2 Requires No External Resistors
75dB Channel Separation at 10MHz
50dB Channel Separation at 100MHz
–82dBc 2nd Harmonic Distortion at 10MHz, 2V
–72dBc 3rd Harmonic Distortion at 10MHz, 2V
Low Supply Current: 8mA per Amplifier
6ns 0.1% Settling Time for 2V Step
TTL Compatible Enable I
Differential Gain of 0.022%, Differential
Phase of 0.006
Wide Supply Range: 2.25V (4.5V) to 6V (12V)
Available in 16-Lead SSOP Package
RGB Amplifiers
Coaxial Cable Drivers
LCD Projectors
R
G
B
IN
IN
IN
75
75
75
–5V
1
2
3
4
5
6
7
8
Triple Video Line Driver
U
P-P
370
370
370
Large Signal Bandwidth
LT6553
+
+
+
SS
370
370
370
100 A when Disabled
U
16
15
14
13
12
11
10
9
–5V
5V
–5V
75
75
75
5V
75
75
75
6553 TA01a
P-P
P-P
DESCRIPTIO
The LT
internally fixed gain of 2. The individual amplifiers are
optimized for performance with a double terminated 75
video load and feature a 2V
400MHz, making them ideal for driving very high-resolu-
tion video signals. Separate power supply pins for each
amplifier boost channel separation to 75dB, allowing the
LT6553 to excel in many high-speed applications.
While the performance of the LT6553 is optimized for dual
supply operation, it can also be used on a single supply as
small as 4.5V. Using dual 5V supplies, each amplifier
draws only 8mA. When disabled, the amplifiers draw less
than 100 A and the output pins become high impedance.
Furthermore, the amplifiers are capable of turning on in
less than 50ns, making them ideal for multiplexing and
portable applications.
The LT6553 is manufactured on Linear Technology’s
proprietary low voltage complementary bipolar process
and is available in the 16-lead SSOP package that fits in the
same PCB area as an SO-8 package.
, LTC and LT are registered trademarks of Linear Technology Corporation.
®
6553 is a high-speed triple video amplifier with an
Triple Video Amplifier
–0.5
–1.0
–1.5
1.5
1.0
0.5
0
Large Signal Transient Response
0
V
V
R
T
A
IN
S
L
= 25 C
= 5V
= 15O
2
= 1V
650MHz Gain of 2
U
4
P–P
6
8
TIME (ns)
P–P
10
12
full signal bandwidth of
14
16
6553 TA01b
18
LT6553
20
1
6553f

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LT6553 Summary of contents

Page 1

... LT6553 to excel in many high-speed applications. P-P P-P While the performance of the LT6553 is optimized for dual supply operation, it can also be used on a single supply as small as 4.5V. Using dual 5V supplies, each amplifier draws only 8mA. When disabled, the amplifiers draw less than 100 A and the output pins become high impedance ...

Page 2

... Output Step (Note 200mV OUT P 200mV OUT P ORDER PART NUMBER + LT6553CGN OUTR LT6553IGN – OUTG GN PART + 11 V MARKING 10 OUTB – 6553 6553I = 0.4V 0V. EN AGND DGND MIN TYP MAX UNITS 3 ...

Page 3

... Note 4: The LT6553C is guaranteed functional over the operating temperature range of – Note 5: The LT6553C is guaranteed to meet specified performance from The LT6553C is designed, characterized and expected to meet specified performance from –40 C and 85 C but is not tested or QA sampled at these temperatures. The LT6553I is guaranteed to meet specified performance from – ...

Page 4

... LT6553 W U TYPICAL PERFOR A CE CHARACTERISTICS Supply Current per Amplifier vs Temperature 0. –55 –35 – 105 125 TEMPERATURE ( C) 6553 G01 Input Referred Offset Voltage vs Temperature 10 7.5 IN 5.0 2.5 0 –2.5 –5.0 – ...

Page 5

... – 30 – 40 – 50 – 60 HD3 – 70 – 80 HD2 – 90 – 100 – 110 – 120 0.01 0 100 FREQUENCY (MHz) 6553 G17 LT6553 PSRR vs Frequency PSRR –PSRR 40 +PSRR 0.001 0.01 0 100 ...

Page 6

... LT6553 W U TYPICAL PERFOR A CE CHARACTERISTICS Small Signal Transient Response 0. 100mV IN P– 150 0. 0.05 0 –0.05 –0.10 –0. TIME (ns) 6553 G19 Large Signal Transient Response 1 P– 150 1 ...

Page 7

... V (Pin 16): Positive Supply Voltage. V internally connected to each other, and must all be con- nected externally. Proper supply bypassing is necessary for best performance. See the Applications Information section. LT6553 + pins are not internally connected to + pins are not internally connected to + pins are not ...

Page 8

... U U APPLICATIO S I FOR ATIO Power Supplies The LT6553 is optimized for 5V supplies but can be operated on as little as 2.25V or a single 4.5V supply and as much single 12V supply. Internally, each supply is independent to improve channel isolation. Do not leave any supply pins disconnected or the part may ...

Page 9

... For ideal operation load termination should be connected at the output. The LT6553’s gain of 2 will compensate for the resulting divider between the series and load termination resistors. JP1 ...

Page 10

... AC cou- pling and setting a DC bias point at the input. A schematic of a single channel is shown in Figure 2. AC performance of the LT6553 in the single supply application as shown is nearly identical to performance with dual supplies. The 6.8k and 2.2k bias resistors at the input set up a ...

Page 11

... TYP .015 .004 45 .053 – .068 (0.38 0.10) (1.351 – 1.727) 0 – 8 TYP .008 – .012 (0.203 – 0.305) LT6553 + V AGND 370 370 OUT – V 6553 SS .189 – .196* (4.801 – 4.978) .009 (0 ...

Page 12

... FAX: (408) 434-0507 3. LT6553 LT6553 NOTE: 75 POWER SUPPLY BYPASS CAPACITORS NOT SHOWN FOR CLARITY –3.3V Figure 3. RGB Video Selector/Cable Driver COMMENTS ...

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