LINEAR TECHNOLOGY LT6550, LT6551 Technical data
FEATURES
V
IN
V
OUT
0V
0V
V
S
= 3.3V
V
IN
= 0.5V TO 1.25V
f = 10MHz
6550/51 TA01b
■
Single Supply Operation from 3V to 12.6V
■
Small (3mm × 5mm) MSOP 10-Lead Package
■
Internal Resistors for a Gain of Two
■
340V/µs Slew Rate
■
110MHz –3dB Bandwidth
■
30MHz Flat to 0.25dB
■
3% Settling Time: 20ns
■
Input Common Mode Range Includes Ground
■
Rail-to-Rail Output
■
High Output Drive: 60mA
■
Operating Temperature Range: –40°C to 85°C
■
24-Bit RGB
U
APPLICATIO S
■
Automotive Displays
■
LCD and CRT Compatible
■
RGB Amplifiers
■
Coaxial Cable Drivers
■
Low Voltage High Speed Signal Processing
■
Set Top Boxes
, LTC and LT are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
LT6550/LT6551
3.3V Triple and Quad
Video Amplifiers
U
DESCRIPTIO
The LT®6550/LT6551 are 3.3V triple and quad high speed
video amplifiers. These voltage feedback amplifiers drive
double terminated 50Ω or 75Ω cables and are configured
for a fixed gain of 2, eliminating six or eight external gain
setting resistors. The LT6550/LT6551 feature 110MHz
–3dB bandwidth, high slew rates and fast settling, making
them ideal for RGB video processing.
The LT6551 quad is designed for single supply operation
and the LT6550 triple can be used on either single or split
supplies. On a single 3.3V supply, the input voltage range
extends from ground to 1.55V and the output swings to
within 400mV of the supply voltage while driving a 150Ω
load. These features, combined with the ability to accept
RGB video signals without the need for AC coupling or
level shifting of the incoming signals, make the LT6550/
LT6551 an ideal choice for low voltage video applications.
Both the LT6550 and LT6551 are available in the small
10-Pin MSOP package and utilize a flow-thru pin out. The
small footprint results in a compact high performance
video amplifier solution.
TYPICAL APPLICATIO
3.3V Single Supply LT6551 RGB Plus SYNC Cable Driver
LT6551
450Ω 450Ω
450Ω 450Ω
450Ω 450Ω
450Ω 450Ω
SYNC
GND
R
IN
75Ω
G
IN
75Ω
B
IN
75Ω
IN
75Ω
–
OA
+
–
OA
+
–
OA
+
–
OA
+
U
3.3V
75Ω
R
OUT
75Ω
75Ω
G
OUT
75Ω
75Ω
B
OUT
SYNC
OUT
75Ω
75Ω
75Ω
6551 TA01a
Output Step Response
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1
LT6550/LT6551
1
2
3
4
5
IN1
IN2
IN3
IN4
GND
10
9
8
7
6
V
CC
OUT1
OUT2
OUT3
OUT4
TOP VIEW
MS10 PACKAGE
10-LEAD PLASTIC MSOP
X2
X2
X2
X2
WW
W
U
ABSOLUTE AXI U RATI GS
(Note 1)
Total Supply Voltage
LT6550 (V
LT6551 (V
TO VEE)........................................ 12.6V
CC
TO GND) ...................................... 12.6V
CC
Input Current (Note 9) ........................................ ±10mA
Output Short-Circuit Duration (Note 2) ............ Indefinite
Operating Temperature Range ................ –40°C to 85°C
UUW
PACKAGE/ORDER I FOR ATIO
TOP VIEW
1
IN1
2
IN2
3
IN3
4
GND
5
V
EE
MS10 PACKAGE
10-LEAD PLASTIC MSOP
T
= 150°C, θJA = 110°C/W
JMAX
ORDER PART NUMBER
X2
X2
(Note 4)
10
V
CC
OUT1
9
X2
OUT2
8
OUT3
7
N/C
6
MS10 PART MARKING
Specified Temperature Range (Note 3)
LT6550C/LT6551C .............................. –40°C to 85°C
LT6550I/LT6551I................................ –40°C to 85°C
Maximum Junction Temperature .......................... 150°C
Storage Temperature Range ................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
T
= 150°C, θJA = 110°C/W
JMAX
(Note 4)
ORDER PART NUMBER MS10 PART MARKING
Consult LTC Marketing for parts specified with wider operating temperature ranges.
3.3V ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
LT6551 (Pins 1,2,3,4). V
PARAMETER CONDITIONS MIN TYP MAX UNITS
DC Output Accuracy No Load, V
Output Voltage Matching Between Any Two Outputs
Input Current Any Input
Input Impedance, ∆VIN/∆I
Input Noise Voltage Density f = 100kHz (Note 10) 12 nV/√Hz
Input Noise Current Density f = 100kHz (Note 10) 8 pA/√Hz
Voltage Gain (Note 5) 0.25V ≤ VIN ≤ 1.25V
Output Voltage Swing Low VIN = –0.1V
2
LT6550CMS
LT6550IMS
Order Options Tape and Reel: Add #TR Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: http://www.linear.com/leadfree/
= 0V LT6550 (Pin 5), unless otherwise noted.
EE
IN
LTB9
LTC1
The
= 25°C. VCC = 3.3V, V
A
Ideal = 1.5V
OUT
VIN = 0V to 1V
No Load
= 150Ω
R
L
R
= 75Ω, 0.25V ≤ VIN ≤ 0.75V 1.85 2.15 V/V
L
No Load
= 5mA
I
SINK
I
= 10mA
SINK
LT6551CMS
LT6551IMS
●
denotes the specifications which apply over the specified
= 0V; VIN = 0.75V LT6550 (Pins 1,2,3);
GND
LTC2
LTC3
●
●
●
●
100 300 kΩ
●
1.9 2.1 V/V
●
1.9 2.1 V/V
●
●
●
30 70 mV
25 75 mV
15 65 µA
10 30 mV
60 150 mV
90 200 mV
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LT6550/LT6551
3.3V ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
LT6551 (Pins 1,2,3,4). V
PARAMETER CONDITIONS MIN TYP MAX UNITS
Output Voltage Swing High VIN = 1.75V
PSRR VCC = 3V to 10V, VIN = 0.5V
Minimum Supply Voltage (Note 6)
Output Short-Circuit Current VIN = 1V, V
Supply Current per Amplifier (Note 7) 8.5 10 mA
Slew Rate (Note 8) RL = 150Ω, V
Small Signal –3dB Bandwidth RL = 150Ω 90 MHz
Gain Flatness Less than 0.25dB 30 MHz
Gain Matching Any One Channel to Any Other Channel 0.15 dB
Settling Time to 3% RL = 150Ω, V
Settling Time to 1% RL = 150Ω, V
% Overshoot V
Differential Gain RL = 150Ω, Black Level = 0.6V at Device Output 0.09 %
Differential Phase RL = 150Ω, Black Level = 0.6V at Device Output 0.09 Deg
Channel Separation Measured at 10MHz 60 dB
= 0V LT6550 (Pin 5), unless otherwise noted.
EE
Measured from 1V to 2V
= 25°C. VCC = 3.3V, V
A
No Load
R
= 150Ω
L
= 75Ω 2.0 2.5 V
R
L
= 0V 35 50 mA
OUT
= 0.5V to 2.5V 140 250 V/µs
OUT
= 1V to 2.5V 20 ns
OUT
= 1V to 2.5V 30 ns
OUT
= 1V to 2.5V, RL = 150Ω 5%
OUT
The ● denotes the specifications which apply over the specified
= 0V; VIN = 0.75V LT6550 (Pins 1,2,3);
GND
●
3.0 3.2 V
●
2.5 2.9 V
●
40 48 dB
●
3V
●
25 mA
●
●
115 V/µs
11 mA
5V ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
LT6551 (Pins 1,2,3,4). V
PARAMETER CONDITIONS MIN TYP MAX UNITS
Output Accuracy No Load, V
Output Voltage Matching Between Any Two Outputs
Input Current
Input Impedance, ∆VIN/∆I
Input Noise Voltage Density f = 100kHz (Note 10) 12 nV/√Hz
Input Noise Current Density f = 100kHz (Note 10) 8 pA/√Hz
Voltage Gain (Note 5) 0.25V ≤ VIN ≤ 1.75V
Output Voltage Swing Low VIN = –0.1V
Output Voltage Swing High VIN = 2.6V
= 0V LT6550 (Pin 5), unless otherwise noted.
EE
IN
VIN = 0V to 2V
No Load
R
R
No Load
I
SINK
I
SINK
No Load
R
R
= 25°C. VCC = 5V, V
A
OUT
= 150Ω
L
= 75Ω, 0.25V ≤ VIN ≤ 1.25V, 0°C ≤ TA ≤ 70°C (Only)
L
= 5mA
= 10mA
= 150Ω
L
= 75Ω, 0°C ≤ TA ≤ 70°C (Only)
L
The ● denotes the specifications which apply over the specified
= 0V; VIN = 1.25V LT6550 (Pins 1,2,3);
GND
Ideal = 2.5V
●
●
●
●
100 300 kΩ
●
1.9 2.1 V/V
●
1.9 2.1 V/V
●
1.85 2.15 V/V
●
●
●
●
4.6 4.8 V
●
3.5 4.1 V
●
2.5 3.2 V
30 70 mV
40 90 mV
15 65 µA
10 30 mV
60 150 mV
90 200 mV
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3
LT6550/LT6551
5V ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
LT6551 (Pins 1,2,3,4). V
PARAMETER CONDITIONS MIN TYP MAX UNITS
PSRR VCC = 3V to 10V, VIN = 0.5V
Minimum Supply Voltage (Note 6)
Output Short-Circuit Current VIN = 1V, V
Supply Current per Amplifier (Note 7) 9.5 11.5 mA
Slew Rate RL = 150Ω, V
Small Signal –3dB Bandwidth RL = 150Ω 110 MHz
Gain Flatness Less than 0.25dB 30 MHz
Gain Matching Any One Channel to Any Other Channel 0.15 dB
Settling Time to 3% RL = 150Ω, V
Settling Time to 1% RL = 150Ω, V
% Overshoot V
Differential Gain RL = 150Ω, Black Level = 1V at Device Output 0.05 %
Differential Phase RL = 150Ω, Black Level = 1V at Device Output 0.05 Deg
Channel Separation Measured at 10MHz 60 dB
= 0V LT6550 (Pin 5), unless otherwise noted.
EE
= 25°C. VCC = 5V, V
A
≤ 70°C
0°C ≤ T
A
–40°C ≤ T
Measured from 1V to 3V
= 1V to 2.5V, RL = 150Ω 5%
OUT
The ● denotes the specifications which apply over the specified
= 0V; VIN = 1.25V LT6550 (Pins 1,2,3);
GND
●
40 48 dB
●
3V
= 0V 45 60 mA
OUT
≤ 85°C
A
= 0.5V to 3.5V, 220 340 V/µs
OUT
= 1V to 2.5V 20 ns
OUT
= 1V to 2.5V 35 ns
OUT
●
40 mA
●
30 mA
●
●
180 V/µs
12.5 mA
±5V ELECTRICAL CHARACTERISTICS
the specified temperature range, otherwise specifications are at T
(LT6550 Only) The ● denotes the specifications which apply over
= 25°C. VS = ±5V, VIN = 0V (Pins 1,2,3) V
A
= 0V (Pin 4) unless
GND
otherwise noted.
PARAMETER CONDITIONS MIN TYP MAX UNITS
Output Offset
Output Voltage Matching Between Any Two Outputs
Input Current
Input Impedance, ∆VIN/∆I
Input Noise Voltage Density f = 100kHz (Note 10) 12 nV/√Hz
Input Noise Current Density f = 100kHz (Note 10) 8 pA/√Hz
Voltage Gain –1.75V ≤ VIN ≤ 1.75V
Output Voltage Swing VIN = ±2.6V
PSRR VS = ±2.5V to ±5V,
Output Short-Circuit Current VO = 0V 45 60 mA
IN
VIN = –1V to 1V
No Load
= 150Ω
R
L
= 75Ω, –1V ≤ VIN ≤ 1V
R
L
No Load
= 150Ω
R
L
= 75Ω, 0°C ≤ TA ≤ 70°C (Only)
R
L
0°C ≤ T
≤ 70°C
A
–40°C ≤ T
≤ 85°C
A
●
●
●
●
200 500 kΩ
●
1.9 2.1 V/V
●
1.9 2.1 V/V
●
1.9 2.1 V/V
●
±4.6 ±4.8 V
●
±3.5 ±4.2 V
●
±2.6 ±3.2 V
●
38 48 dB
●
40 mA
●
30 mA
30 70 mV
20 60 mV
20 70 µA
4
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LT6550/LT6551
±5V ELECTRICAL CHARACTERISTICS
the specified temperature range, otherwise specifications are at T
(LT6550 Only) The ● denotes the specifications which apply over
= 25°C. VS = ±5V, VIN = 0V (Pins 1,2,3) V
A
= 0V (Pin 4) unless
GND
otherwise noted.
PARAMETER CONDITIONS MIN TYP MAX UNITS
Supply Current per Amplifier 8.5 10.5 mA
●
Slew Rate RL = 150Ω, V
Measured from –2V to 2V
= –3V to 3V, 400 600 V/µs
OUT
●
300 V/µs
Small Signal –3dB Bandwidth RL = 150Ω 90 MHz
Gain Flatness Less than 0.25dB 30 MHz
Gain Matching Any One Channel to Any Other Channel 0.15 dB
Settling Time to 3% RL = 150Ω, V
Settling Time to 1% RL = 150Ω, V
% Overshoot V
= 1V to 2.5V, RL = 150Ω 5%
OUT
= 1V to 2.5V 20 ns
OUT
= 1V to 2.5V 30 ns
OUT
Differential Gain RL = 150Ω, Black Level = 0V at Device Output 0.15 %
Differential Phase RL = 150Ω, Black Level = 0V at Device Output 0.09 Deg
Channel Separation Measured at 10MHz 60 dB
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: A heat sink may be required to keep the junction temperature
below absolute maximum. This depends on the power supply voltage and
how many amplifiers are shorted.
Note 3: The LT6550C/LT6551C are guaranteed to meet specified
performance from 0°C to 70°C and are designed, characterized and
expected to meet specified performance from –40°C to 85°C but are not
tested or QA sampled at these temperatures. The LT6550I/LT6551I are
guaranteed to meet specified performance from –40°C to 85°C.
Note 4: Thermal resistance varies depending upon the amount of PC board
metal attached to Pin 5 of the device. θ
is specified for a 2500mm2 test
JA
board covered with 2oz copper on both sides.
Note 5: Gain is measured by changing the input voltage, and dividing the
change in output voltage by the change in input voltage.
Note 6: Minimum supply voltage is guaranteed by the PSRR test.
Note 7: The supply current specification includes additional output current
through the internal feedback and gain resistor.
Note 8: Guaranteed by correlation to slew rate at 5V and ±5V.
Note 9: The inputs are protected from ESD with diodes to the supplies.
Note 10: Noise is input referred, including internal gain resistors.
12 mA
UW
5V/3.3V TYPICAL PERFOR A CE CHARACTERISTICS
V
(Pin 5) = 0V (LT6550), GND (Pin 5) = 0V (LT6551)
EE
Supply Current Per Amplifier vs
Supply Voltage
14
VIN = 0.75V
= ∞
R
L
12
GND = 0V
10
8
6
4
SUPPLY CURRENT (mA)
2
0
0
34
2
1
TA = 25°C
V
(V)
CC
TA = 125°C
TA = –55°C
1098765
6550/51 G01
Output Voltage vs Input Voltage
(V)
OUT
V
3.5
3.0
2.5
2.0
1.5
1.0
0.5
VS = 3.3V, 0V
= 150Ω
R
L
0
0
0.2
0.4
0.6 0.8
TA = 125°C
VIN (V)
TA = 25°C
TA = –55°C
6550/51 G02
–10
–11
–12
–13
–14
–15
–16
INPUT BIAS (µA)
–17
–18
–19
2.01.81.61.41.21.0
–20
Input Bias Current vs
Temperature
VS = 5V, 0V
= 2.5V
V
OUT
25
–50
0
–25
TEMPERATURE (°C)
50
75
100
6550/51 G03
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125
5
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