LT6206CMS8 [Linear]
Single/Dual/Quad Single Supply 3V, 100MHz Video Op Amps; 单/双/四路，单3V电源， 100MHz的视频运算放大器
| 型号： | LT6206CMS8 |
| 厂家： | 
Linear |
| 描述： | Single/Dual/Quad Single Supply 3V, 100MHz Video Op Amps |
| 文件： | 总16页 (文件大小：431K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LT6205/LT6206/LT6207
Single/Dual/Quad
Single Supply 3V,
100MHz Video Op Amps
U
DESCRIPTIO
FEATURES
The LT®6205/LT6206/LT6207 are low cost single/dual/
quad voltage feedback amplifiers that feature 100MHz
gain-bandwidth product, 450V/µs slew rate and 50mA
output current. These amplifiers have an input range that
includesgroundandanoutputthatswingswithin60mVof
either supply rail, making them well suited for single
supply operation.
■
450V/µs Slew Rate
■
100MHz Gain Bandwidth Product
■
Wide Supply Range 2.7V to 12.6V
Output Swings Rail-to-Rail
■
■
Input Common Mode Range Includes Ground
■
High Output Drive: 50mA
■
Channel Separation: 90dB at 10MHz
■
Specified on 3V, 5V, and ±5V Supplies
These amplifiers maintain their performance for supplies
from 2.7V to 12.6V and are specified at 3V, 5V and ±5V.
The inputs can be driven beyond the supplies without
damage or phase reversal of the output. Isolation between
channels is high, over 90dB at 10MHz.
■
Input Offset Voltage: 1mV
■
Low Power Dissipation: 20mW Per Amplifier on
Single 5V
■
Operating Temperature Range: –40°C to 85°C
■
Single in SOT-23, Dual in MSOP,
Quad in SSOP Package
The LT6205 is available in the 5-pin SOT-23, and the
LT6206 is available in an 8-lead MSOP package with
standard op amp pin-outs. For compact layouts the quad
LT6207 is available in the 16-pin SSOP package. These
devices are specified over the commercial and industrial
temperature ranges.
U
APPLICATIO S
■
■
■
■
■
Video Line Driver
Automotive Displays
, LTC and LT are registered trademarks of Linear Technology Corporation.
RGB Amplifiers
Coaxial Cable Drivers
Low Voltage High Speed Signal Processing
U
TYPICAL APPLICATIO
Baseband Video Splitter/Cable Driver
Output Step Response
3.3V
V
1µF
OUT
75Ω
499Ω
499Ω
V
OUT1
8
0V
LT6206
75Ω
2
3
–
1
7
+
V
IN
V
IN
75Ω
0V
5
6
+
–
75Ω
V
OUT2
20ns/DIV
V
V
= 3.3V
S
75Ω
= 0.1V TO 1.1V
IN
f = 10MHz
620567 TA01b
4
F
≈ 50MHz
3dB
≤ 25mA
499Ω
499Ω
I
S
620567 TA01a
620567f
1
LT6205/LT6206/LT6207
W W U W
ABSOLUTE AXI U RATI GS
(Note 1)
Operating Temperature Range .................–40°C to 85°C
Specified Temperature Range (Note 4)....–40°C to 85°C
Storage Temperature Range ..................–65°C to 150°C
Maximum Junction Temperature .......................... 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
Total Supply Voltage (V+ to V–)............................ 12.6V
Input Current ...................................................... ±10mA
Input Voltage Range (Note 2) ...................................±VS
Output Short-Circuit Duration (Note 3)............ Indefinite
Pin Current While Exceeding Supplies (Note 9) .. ±25mA
U
W
U
PACKAGE/ORDER I FOR ATIO
TOP VIEW
OUT A
–IN A
+IN A
1
2
3
4
5
6
7
8
16 OUT D
15 –IN D
–
+
–
+
A
B
D
C
TOP VIEW
TOP VIEW
14
13
12
11
10
9
+IN D
+
+
OUT A
–IN A
+IN A
1
2
3
4
8 V
+
–
OUT 1
–
5 V
V
V
–
7 OUT B
6 –IN B
5 +IN B
+
V
2
–
+IN B
–IN B
OUT B
NC
+IN C
–IN C
OUT C
NC
+
–
+
–
–
+
V
+IN 3
4 –IN
MS8 PACKAGE
8-LEAD PLASTIC MSOP
TJMAX = 150°C, θJA = 250°C/W
S5 PACKAGE
5-LEAD PLASTIC SOT-23
JMAX = 150°C, θJA = 250°C/W
T
GN PACKAGE
16-LEAD NARROW PLASTIC SSOP
TJMAX = 150°C, θJA = 135°C/W
ORDER PART
NUMBER
ORDER PART
S5 PART
MARKING*
GN PART
MARKING
ORDER PART
MS8 PART
MARKING
NUMBER
NUMBER
LT6205CS5
LT6205IS5
LTAEM
LT6207CGN
LT6207IGN
6207
6207I
LT6206CMS8
LT6206IMS8
LTH3
LTH4
*The temperature grades are identified by a label on the shipping container. Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS
The ● denotes specifications which apply over the specified temperature
range, otherwise specifications are at TA = 25°C. VS = 3V, 0V; VS = 5V, 0V; VCM = VOUT = 1V, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
Input Offset Voltage
1
3.5
5
mV
mV
OS
●
Input Offset Voltage Match
(Channel-to-Channel) (Note 5)
1
3
4
mV
mV
●
●
●
●
Input Offset Voltage Drift (Note 6)
Input Bias Current
7
10
0.6
2
15
30
3
µV/°C
µA
I
I
B
Input Offset Current
µA
OS
Input Noise Voltage
0.1Hz to 10Hz
f = 10kHz
µV
P-P
e
Input Noise Voltage Density
Input Noise Current Density
Input Resistance
9
nV/√Hz
pA/√Hz
MΩ
n
i
f = 10kHz
4
n
+
V
= 0V to V – 2V
1
CM
Input Capacitance
2
pF
620567f
2
LT6205/LT6206/LT6207
ELECTRICAL CHARACTERISTICS
The ● denotes specifications which apply over the specified temperature
range, otherwise specifications are at TA = 25°C. VS = 3V, 0V; VS = 5V, 0V; VCM = VOUT = 1V, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
78
0
TYP
MAX
UNITS
dB
+
CMRR
Common Mode Rejection Ratio
Input Voltage Range
V
= 0 to V – 2V
●
●
●
90
CM
+
V – 2
V
PSRR
Power Supply Rejection Ratio
V = 3V to 12V
S
67
75
dB
V
= V
= 0.5V
CM
OUT
Minimum Supply Voltage
Large-Signal Voltage Gain
V
= 0.5V
●
2.7
V
CM
A
V
V = 5V, V = 0.5V to 4.5V, R = 1k
V = 5V, V = 1V to 3V, R = 150Ω
V = 3V, V = 0.5V to 2.5V, R = 1k
●
●
●
30
5
20
100
20
60
V/mV
V/mV
V/mV
VOL
OL
S
O
L
S
O
L
S
O
L
Output Voltage Swing Low (Note 7)
Output Voltage Swing High (Note 7)
Short-Circuit Current
No Load, Input Overdrive = 30mV
= 5mA
●
●
●
●
10
75
300
200
25
mV
mV
mV
mV
I
150
500
350
SINK
V = 5V, I
V = 3V, I
= 25mA
= 15mA
S
SINK
SINK
S
V
No Load, Input Overdrive = 30mV
= 5mA
●
●
●
●
60
100
250
1200
500
mV
mV
mV
mV
OH
I
140
650
300
SOURCE
V = 5V, I
V = 3V, I
= 25mA
= 15mA
S
SOURCE
SOURCE
S
I
V = 5V, Output Shorted to GND
35
25
60
mA
mA
SC
S
●
●
V = 3V, Output Shorted to GND
30
20
50
mA
mA
S
I
Supply Current per Amplifier
3.75
5
5.75
mA
mA
S
●
●
GBW
SR
Gain Bandwidth Product
Slew Rate
f = 2MHz
65
100
450
MHz
V = 5V, A = 2, R = R = 1k
S
V/µs
V
F
G
V = 1V to 4V, Measured from 1.5V to 3.5V
O
Channel Separation
f = 10MHz
90
71
dB
FPBW
Full Power Bandwidth
V
= 2V (Note 8)
MHz
OUT
P-P
t
Settling time to 3%
Settling time to 1%
V = 5V, ∆V
S
= 2V, A = –1, R = 150Ω
15
25
ns
ns
S
OUT
V
L
Differential Gain
Differential Phase
V = 5V, A = 2, R = 150Ω, Output Black Level =1V
0.05
0.08
%
Deg
S
V
L
V = 5V, A = 2, R = 150Ω, Output Black Level =1V
S
V
L
The ● denotes specifications which apply over the specified temperature range, otherwise specifications are at TA = 25°C. VS = ±5V;
VCM = VOUT = 0V, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
Input Offset Voltage
1.3
4.5
6
mV
mV
OS
●
Input Offset Voltage Match
(Channel-to-Channel) (Note 5)
1
3
4
mV
mV
●
●
●
●
Input Offset Voltage Drift (Note 6)
Input Bias Current
10
18
0.6
2
18
30
3
µV/°C
µA
I
I
B
Input Offset Current
µA
OS
Input Noise Voltage
0.1Hz to 10Hz
µV
P-P
620567f
3
LT6205/LT6206/LT6207
ELECTRICAL CHARACTERISTICS
The ● denotes specifications which apply over the specified temperature
range, otherwise specifications are at TA = 25°C. VS = ±5V; VCM = VOUT = 0V, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
f = 10kHz
MIN
TYP
9
MAX
UNITS
nV/√Hz
pA/√Hz
MΩ
e
Input Noise Voltage Density
Input Noise Current Density
Input Resistance
n
i
f = 10kHz
4
n
V
V
= –5V to 3V
= –5V to 3V
1
CM
CM
Input Capacitance
2
pF
CMRR
PSRR
Common Mode Rejection Ratio
Input Voltage Range
●
●
●
●
●
78
–5
67
50
7.5
90
dB
3
V
Power Supply Rejection Ratio
Large-Signal Voltage Gain
V = ±2V to ±6V
S
75
133
20
dB
A
V = –4V to 4V, R = 1k
O
V/mV
V/mV
VOL
L
V = –3V to 3V, R = 150Ω
O
L
Output Voltage Swing
No Load, Input Overdrive = 30mV
●
●
●
±4.88
±4.75
±3.8
±4.92
±4.85
±4.35
V
V
V
I
I
= ±5mA
= ±25mA
OUT
OUT
I
I
Short-Circuit Current
Short to Ground
±40
±30
±60
mA
mA
SC
●
Supply Current per Amplifier
4
5.6
6.5
mA
mA
S
●
●
GBW
SR
Gain Bandwidth Product
Slew Rate
f = 2MHz
65
100
600
MHz
A = –1, R = 1k
350
V/µs
V
L
V = –4V to 4V, Measured from –3V to 3V
O
Channel Separation
f = 10MHz
90
24
dB
FPBW
Full Power Bandwidth
V
= 8V (Note 8)
14
MHz
OUT
P-P
t
Settling Time to 3%
Settling Time to 1%
∆V
OUT
= 2V, A = –1, R = 150Ω
15
25
ns
ns
S
V
L
Differential Gain
Differential Phase
A = 2, R = 150Ω, Output Black Level = 1V
0.05
0.08
%
Deg
V
L
A = 2, R = 150Ω, Output Black Level = 1V
V
L
Note 1: Absolute Maximum ratings are those values beyond which the life
of a device may be impaired.
Note 2: The inputs are protected by back-to-back diodes. If the differential
input voltage exceeds 1.4V, the input current should be limited to less than
10mA.
Note 5: Matching parameters are the difference between the two amplifiers
A and D and between B and C of the LT6207; between the two amplifiers
of the LT6206.
Note 6: This parameter is not 100% tested.
Note 7: Output voltage swings are measured between the output and
Note 3: 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.
power supply rails.
Note 8: Full power bandwidth is calculated from the slew rate
measurement: FPBW = SR/2πV
.
PEAK
Note 4: The LT6205C/LT6206C/LT6207C 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 LT6205I/LT6206I/
LT6207I are guaranteed to meet specified performance from
–40°C to 85°C.
Note 9: There are reverse biased ESD diodes on all inputs and outputs.
If these pins are forced beyond either supply, unlimited current will flow
through these diodes. If the current is transient in nature and limited to
less than 25mA, no damage to the device will occur.
620567f
4
LT6205/LT6206/LT6207
U W
TYPICAL PERFOR A CE CHARACTERISTICS
Supply Current per Amplifier vs
Supply Voltage
VOS Distribution
Minimum Supply Voltage
100
40
35
30
25
20
15
10
5
5
4
3
2
1
0
V
V
= 5V, 0V
CM
S
= 1V
T
= 125°C
0
A
–100
T
= 25°C
A
T
= –55°C
T
= –55°C
A
–200
–300
–400
–500
–600
A
T
=125°C
A
T
= 25°C
A
0
1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
TOTAL SUPPLY VOLTAGE (V)
–3
–2
–1
0
1
2
3
0
1
2
3
4
5
6
7
8
9
10 11 12
INPUT OFFSET VOLTAGE (mV)
TOTAL SUPPLY VOLTAGE (V)
620567 G03
620567 G01
620567 G02
Change in Offset Voltage vs Input
Common Mode Voltage
Input Bias Current vs Input
Common Mode Voltage
Input Bias Current vs
Temperature
1000
800
600
400
200
0
–4
–5
–2
–3
V
= 5V, 0V
V
V
= 5V, 0V
CM
V
= 5V, 0V
S
S
S
= 1V
–4
–6
–5
–7
–6
T
= 125°C
A
–8
–7
–8
–9
T
= 25°C
T
= 25°C
A
–9
A
–10
–11
–12
–10
–11
–12
T
=125°C
A
T
= –55°C
A
T
= –55°C
A
0
1
2
3
4
5
–50 –25
0
25
50
75 100 125
0
1
2
3
4
5
INPUT COMMON MODE VOLTAGE (V)
TEMPERATURE (°C)
INPUT COMMON MODE VOLTAGE (V)
620567 G04
620567 G06
620567 G05
Output Saturation Voltage vs
Load Current (Output High)
Output Saturation Voltage vs
Load Current (Output Low)
Short-Circuit Current vs
Temperature
75
70
65
60
55
50
45
40
35
10
1
10
1
V
V
= 5V, 0V
= 30mV
V
V
= 5V, 0V
= 30mV
OD
S
OD
S
SINKING
T
= 125°C
SOURCING
A
T
= 125°C
V
V
= 5V, 0V
CM
A
S
= 1V
SINKING
T
= 25°C
T
= 25°C
A
A
SOURCING
0.1
0.01
0.1
0.01
T
= –55°C
T
= –55°C
A
A
V
V
= 3V, 0V
CM
S
= 1V
–50 –25
0
25
50
75 100 125
0.01
0.1
1
10
100
0.01
0.1
1
10
100
TEMPERATURE (°C)
LOAD CURRENT (mA)
LOAD CURRENT (mA)
620567 G07
620567 G08
620567 G09
620567f
5
LT6205/LT6206/LT6207
U W
TYPICAL PERFOR A CE CHARACTERISTICS
Short-Circuit Current vs
Open-Loop Gain
Open-Loop Gain
Temperature
500
400
500
400
90
80
70
60
50
40
3O
V
V
T
= 5V, 0V
CM
= 25°C
V
= ±5V
V
= ±5V
S
S
A
S
= 1V
T
= 25°C
A
300
300
SINKING
200
200
100
100
R
= 1k
R
= 1k
L
L
SOURCING
0
0
–100
–200
–300
–400
–500
–100
–200
–300
–400
–500
R
= 150Ω
R
1
= 150Ω
L
L
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
OUTPUT VOLTAGE (V)
–5 –4 –3 –2 –1
0
2
3
4
5
–50 –25
0
25
50
75 100 125
OUTPUT VOLTAGE (V)
TEMPERATURE (°C)
620567 G11
620567 G12
620567 G10
Input Noise Voltage Density vs
Frequency
Input Noise Current Density vs
Frequency
Warm Up Drift vs Time (LT6206)
30
25
20
15
10
5
120
100
80
60
40
20
0
16
14
12
10
8
V
V
T
= 5V, 0V
= 1V
V
V
T
= 5V, 0V
= 1V
T
= 25°C
S
CM
A
S
CM
A
A
= 25°C
= 25°C
V
= ±5V
S
V
= 5V, 0V
S
6
4
2
0
0
100
1k
10k
100k
100
1k
10k
100k
0
10 20 30 40 50 60 70 80 90 100
TIME AFTER POWER-UP (s)
FREQUENCY (Hz)
FREQUENCY (Hz)
620567 G14
620567 G15
620567 G13
Gain Bandwidth and Phase
Margin vs Supply Voltage
Gain and Phase vs Frequency
0.1Hz to 10Hz Noise Voltage
50
45
40
35
70
60
50
40
30
20
10
0
140
T
= 25°C
V
V
T
= 5V, 0V
= 1V
A
F
L
S
CM
A
PHASE
R = R = 1k
G
120
100
80
C
= 5pF
= 25°C
PHASE MARGIN
V
= 3V, 0V
S
V
= ±5V
S
60
110
105
100
95
40
GAIN BANDWIDTH
20
V
= 3V, 0V
S
0
T
= 25°C
= 1k
= 5pF
A
L
L
GAIN
R
V = ±5V
S
–10
-20
C
–20
-40
0
2
4
6
8
10
12
100k
1M
10M
FREQUENCY (Hz)
100M 500M
TIME (2 SEC/DIV)
TOTAL SUPPLY VOLTAGE (V)
620567 G16
620567 G17
620567 G18
620567f
6
LT6205/LT6206/LT6207
U W
TYPICAL PERFOR A CE CHARACTERISTICS
Gain Bandwidth and Phase
Margin vs Temperature
Slew Rate vs Temperature
Slew Rate vs Closed-Loop Gain
750
700
650
600
550
500
450
400
350
750
55
50
45
40
35
A
V
= –1
V
V
= ±5V
R
C
= 1k
= 5pF
S
O
L
L
L
V
= ±5V
R
R
= R = 1k
= –4V to 4V
= 1k
S
G
L
F
700
650
600
550
500
450
400
RISING V = ±5V
= 1k
R
S
T
= 25°C
A
PHASE MARGIN
FALLING V = ±5V
S
RISING
V
= 3V, 0V
S
RISING V = 5V, 0V
S
V
= ±5V
120
110
100
90
S
FALLING
V
= 3V, 0V
S
FALLING V = 5V, 0V
S
GAIN BANDWIDTH
80
–50 –25
0
25
50
75 100 125
2
3
4
5
–50 –25
0
25
50
75 100 125
TEMPERATURE (°C)
GAIN (A )
V
TEMPERATURE (°C)
620567 G20
620567 G21
620567 G19
Power Supply Rejection Ratio vs
Frequency
Closed-Loop Gain vs Frequency
Output Impedance vs Frequency
1000
100
10
15
12
9
90
80
70
60
50
40
30
20
10
0
T
C
A
= 25°C
= 5pF
= +1
V
T
= 5V, 0V
= 25°C
V
T
= 5V, 0V
S
A
A
L
V
S
A
= 25°C
V
V
= ±5V
CM
S
= 0V
6
A
= 10
V
–PSRR
+PSRR
3
A
= 1
V
A
= 2
V
0
–3
–6
–9
–12
–15
V
V
= 3V
CM
S
= 1V
1
0.1
100k
1M
10M
100M 500M
100k
1M
10M
FREQUENCY (Hz)
100M 500M
10k
100k
1M
FREQUENCY (Hz)
10M
100M
FREQUENCY (Hz)
620567 G22
620567 G24
620567 G23
Common Mode Rejection Ratio
vs Frequency
Series Output Resistor vs
Capacitive Load
Channel Separation vs Frequency
100
90
80
70
60
50
40
30
20
10
0
120
110
100
90
40
35
30
25
20
15
10
5
V
= ±5V
V
A
T
= 5V, 0V
= 1
= 25°C
V
= ±5V
= 25°C
S
S
V
A
S
A
LT6206 CH A-B
T
LT6207 CH A-D, CH B-C
R
= 10Ω, R = ∞
S
L
T
= 25°C
A
80
R
S
= 20Ω, R = ∞
L
70
60
R
= R = 50Ω
S
L
50
40
0
10k
100k
1M
10M
100M
1G
1M
10M
100M
10
100
1000
FREQUENCY (Hz)
CAPACITIVE LOAD (pF)
FREQUENCY (Hz)
620567 G25
620567 G26
620567 G27
620567f
7
LT6205/LT6206/LT6207
U W
TYPICAL PERFOR A CE CHARACTERISTICS
Maximum Undistorted Output
Signal vs Frequency
Series Output Resistor vs
Capacitive Load
Distortion vs Frequency
10
9
8
7
6
5
4
3
2
1
0
–30
–40
–50
–60
–70
–80
–90
–100
40
35
30
25
20
15
10
5
V
A
T
= 5V, 0V
= 2
= 25°C
A
V
= +1
= 2V
S
V
A
V
O
P–P
AV = –1
R
= 10Ω, R = ∞
L
S
V
= 5V, 0V
S
AV = 2
R
= 1k, 2ND
L
R
= 150Ω, 3RD
L
R
= 20Ω, R = ∞
L
S
R
= 150Ω, 2ND
L
R
= R = 50Ω
S
V
T
= ±5V
= 25°C
L
S
A
R
= 1k, 3RD
L
HD , HD < –30dBc
2
3
0
0.1
1
10
100
0.01
0.1
1
10
10
100
1000
FREQUENCY (MHz)
FREQUENCY (MHz)
CAPACITIVE LOAD (pF)
620567 G30
620567 G31
620567 G28
Distortion vs Frequency
Distortion vs Frequency
Distortion vs Frequency
–30
–40
–50
–60
–70
–80
–90
–100
–30
–40
–50
–60
–70
–80
–90
–100
–30
–40
–50
–60
–70
–80
–90
–100
A
V
V
= +2
= 2V
= 5V, 0V
A
V
V
= +1
= 2V
= ±5V
A
V
V
= +2
= 2V
= ±5V
V
O
V
O
V
O
P–P
P–P
P–P
R
= 150Ω, 3RD
L
S
S
S
R
= 150Ω, 3RD
R
= 1k, 2ND
L
L
R
= 150Ω, 2ND
L
R
= 150Ω, 2ND
L
R
= 150Ω, 2ND
L
R
= 150Ω, 3RD
L
R
= 1k, 3RD
1
R
= 1k, 3RD
L
R
= 1k, 2ND
0.1
L
R
1
= 1k, 3RD
L
L
R
= 1k, 2ND
L
0.01
0.1
1
10
0.01
0.1
10
0.01
10
FREQUENCY (MHz)
FREQUENCY (MHz)
FREQUENCY (MHz)
620567 G32
620567 G33
620567 G34
Large Signal Response
VS = 5V, 0V
Small Signal Response
VS = 5V, 0V
2.5V
0V
VS = 5V, 0V
AV = 1
50ns/DIV
VS = 5V, 0V
AV = 1
50ns/DIV
R
L = 150Ω
620567 G35
R
L = 150Ω
620567 G36
620567f
8
LT6205/LT6206/LT6207
U W
TYPICAL PERFOR A CE CHARACTERISTICS
Large Signal Response VS = ±5V
Small Signal Response VS = ±5V
Output-Overdrive Recovery
0V
0V
0V
0V
VS = ±5V
50ns/DIV
VS = ±5V
50ns/DIV
VS = 5V, 0V
AV = 2
100ns/DIV
AV = 1
AV = 1
R
L = 150Ω
620567 G37
R
L = 150Ω
620567 G38
620567 G39
W U U
U
APPLICATIO S I FOR ATIO
+
V
R2
R3
I1
I2
I3
Q13
Q9
Q10
C
M
+
–
Q2
Q7
Q8
V
Q3
Q5
Q6
+
V
R1
DESD5
DESD6
R
IN
150Ω
COMPLEMENTARY
DRIVE
OUT
DESD1
DESD2
Q1
+IN
–IN
Q4
GENERATOR
D1
D2
D3
D4
Q12
Q11
V
–
+
V
V
Q14
R
IN
150Ω
DESD3
DESD4
R4
R5
I4
–
V
620567 F01
–
V
Figure 1. Simplified Schematic
620567f
9
LT6205/LT6206/LT6207
W U U
U
APPLICATIO S I FOR ATIO
Amplifier Characteristics
negative supply pin. For optimum performance all feed-
back components and bypass capacitors should be con-
tained in a 0.5 inch by 0.5 inch area. This helps ensure
minimal stray capacitances.
Figure 1 shows a simplified schematic of the LT6205/
LT6206/LT6207. The input stage consists of transistors
Q1 to Q8 and resistor R1. This topology allows for high
slew rates at low supply voltages. The input common
mode range extends from ground to typically 1.75V from
VCC, and is limited by 2 VBEs plus a saturation voltage of
acurrentsource.Thereareback-to-backseriesdiodes,D1
to D4, across the + and – inputs of each amplifier to limit
the differential voltage to ±1.4V. RIN limits the current
through these diodes if the input differential voltage ex-
ceeds ±1.4V. The input stage drives the degeneration
resistors of PNP and NPN current mirrors, Q9 to Q12,
which convert the differential signals into a single-ended
output. The complementary drive generator supplies cur-
rent to the output transistors that swing from rail-to-rail.
The parallel combination of the feedback resistor and gain
setting resistor on the inverting input can combine with
the input capacitance to form a pole which can degrade
stability. In general, use feedback resistors of 1k or less.
Capacitive Load
TheLT6205/LT6206/LT6207areoptimizedforwideband-
width video applications. They can drive a capacitive load
of 20pF in a unity-gain configuration. When driving a
larger capacitive load, a resistor of 10Ω to 50Ω should be
connected between the output and the capacitive load to
avoid ringing or oscillation. The feedback should still be
taken from the output pin so that the resistor will isolate
the capacitive load and ensure stability. The Typical Per-
formanceCurvesshowtheoutputovershootwhendriving
a capacitive load with different series resistors.
The current generated through R1, divided by the capaci-
tor CM, determines the slew rate. Note that this current,
and hence the slew rate, are proportional to the magnitude
of the input step. The input step equals the output step
divided by the closed loop gain. The highest slew rates are
therefore obtained in the lowest gain configurations. The
Typical Performance Characteristic Curve of Slew Rate vs
Closed Loop Gain shows the details.
Video Signal Characteristics
Composite video is the most commonly used signal in
broadcast-grade products and includes Luma (or lumi-
nance, the intensity information), Chroma (the colorim-
etry information) and Sync (vertical and horizontal raster
timing) elements combined into a single signal, NTSC and
PAL being the common formats. Component video for
entertainment systems include separate signal(s) for the
Luma and Chroma (i.e. Y/C or YPbPr) with Sync generally
appliedtotheLumachannel(Ysignal). Insomeinstances,
native RGB signals (separate intensity information for
each primary color: red, green, blue) will have Sync
included as well. All the signal types that include Sync are
electricallysimilarfromavoltage-swingstandpoint,though
various timing and bandwidth relationships exist depend-
ing on the applicable standard.
ESD
The LT6205/LT6206/LT6207 have reverse-biased ESD
protection diodes on all inputs and outputs as shown in
Figure 1. If these pins are forced beyond either supply
unlimited current will flow through these diodes. If the
current is transient, and limited to 25mA or less, no
damage to the device will occur.
Layout and Passive Components
With a gain bandwidth product of 100MHz and a slew rate
of 450V/µs the LT6205/LT6206/LT6207 require special
attention to board layout and supply bypassing. Use a
ground plane, short lead lengths and RF-quality low ESR
supply bypass capacitors. The positive supply pin should
be bypassed with a small capacitor (typically 0.01µF to
0.1µF) within 0.25 inches of the pin. When driving heavy
loads, an additional 4.7µF electrolytic capacitor should be
used. When using split supplies, the same is true for the
The typical video waveforms that include Sync (including
full composite) are specified to have nominal 1VP-P ampli-
tude. The lower 0.3V is reserved for “sync tips” that carry
timing information, and by being at a lower potential than
all the other information, represents blacker-than-black
intensity, thereby causing scan retrace activity to be
620567f
10
LT6205/LT6206/LT6207
W U U
APPLICATIO S I FOR ATIO
U
invisible on a CRT. The “black” level of the waveform is at
(or “setup” very slightly above) the upper limit of the sync
information. Waveform content above the black-level is
intensity information, with peak brightness represented at
the maximum signal level. In the case of composite video,
the modulated color subcarrier is superimposed on the
waveform, but the dynamics remain inside the 1VP-P limit
(a notable exception is the chroma ramp used for differen-
tial-gain and differential-phase measurements, which can
reach 1.15VP-P).
tive design margin of 1.03V. The amplifier output (for gain
of 2) must swing +1.47V to –1.65V around the DC-
operating point, so the biasing circuitry needs to be
designed accordingly for optimal fidelity.
Clamped AC-Input Cable Driver
A popular method of further minimizing supply require-
ments with AC-coupling is to employ a simple clamping
scheme as shown in Figure 2. In this circuit, the LT6205
operates from 3.3V by having the sync-tips control the
charge on the coupling capacitor C1, thereby reducing the
black-level input wander to ≈ 0.07V. The only minor
drawback to this circuit is the slight sync-tip compression
(≈ 0.025V at input) due to the diode conduction current,
thoughthepicturecontentremainsfullfidelity.Thiscircuit
has nearly the design margin of its DC-coupled counter-
part,at0.31V(forthiscircuit,VMIN =2.14+VOH +VOL).The
clamp-diode anode bias is selected to set the sync-tip
output voltage at or slightly above VOL.
DC-Coupled Video Amplifier Considerations
Typically video amplifiers drive cables that are series
terminated (“back-terminated”) at the source and load-
terminated at the destination with resistances equal to the
cable characteristic impedance, Z0 (usually 75Ω). This
configuration forms a 2:1 resistor divider in the cabling
that must be accounted for in the driver amplifier by
delivering 2VP-P output into an effective 2 • Z0 load (e.g.
150Ω). Driving the cable can require more than 13mA
whiletheoutputisapproachingthesaturation-limitsofthe
YPbPr to RGB Component-Video Converter
amplifier output. The absolute minimum supply is: VMIN
=
Theback-pageapplicationusestheLT6207quadtoimple-
ment a minimum amplifier count topology to transcode
consumer component-video into RGB. In this circuit,
signals only pass through one active stage from any input
to any output, with passive additions being performed by
the cable back-termination resistors. The compromise in
using passive output addition is that the amplifier outputs
must be twice as large as that of a conventional cable
driver. The Y-channel section also has the demanding
requirement that it single-handedly drives all three out-
puts to full brightness during times of white content, so a
helper current source is used to assure unclipped video
when operating from ±5V supplies. This circuit maps
sync-on-Y to sync on all the RGB channels, and for best
results should have input black-levels at 0V nominal to
prevent clipping.
2 + VOH +VOL. For example, the LT6206 dual operating on
3.3V as shown on the front page of this datasheet, with
exceptionally low VOH ≤ 0.5V and VOL ≤ 0.35V, provides a
design margin of 0.45V. The design margin must be large
enough to include supply variations and DC bias accuracy
for the DC-coupled video input.
Handling AC-Coupled Video Signals
AC-coupled video inputs are intrinsically more difficult to
handle than those with DC-coupling because the average
signal voltage of the video waveform is effected by the
picture content, meaning that the black-level at the ampli-
fier “wanders” with scene brightness. The wander is
measured as 0.56V for a 1VP-P NTSC waveform changing
from black-field to white-field and vice-versa, so an addi-
tional 1.12V allowance must be made in the amplifier
supply (assuming gain of 2, so VMIN = 3.12 + VOH +VOL).
For example, an LT6205 operating on 5V has a conserva-
620567f
11
LT6205/LT6206/LT6207
U
TYPICAL APPLICATIO
3.3V
0.1µF
75Ω
1k
1k
2.4k
VIDEO OUT
75Ω
5
LT6205
2
4
3
–
+
C1
4.7µF
1
COMPOSITE
VIDEO IN 1V
P–P
BAT54
10k
C2
4.7µF
470Ω
I
≤ 19mA
S
620567 TA02
Figure 2. Clamped AC-Input Video Cable Driver
620567f
12
LT6205/LT6206/LT6207
U
PACKAGE DESCRIPTIO
S5 Package
5-Lead Plastic TSOT-23
(Reference LTC DWG # 05-08-1635)
0.62
MAX
0.95
REF
2.90 BSC
(NOTE 4)
1.22 REF
1.50 – 1.75
(NOTE 4)
2.80 BSC
1.4 MIN
3.85 MAX 2.62 REF
PIN ONE
RECOMMENDED SOLDER PAD LAYOUT
PER IPC CALCULATOR
0.30 – 0.45 TYP
5 PLCS (NOTE 3)
0.95 BSC
0.80 – 0.90
0.20 BSC
DATUM ‘A’
0.01 – 0.10
1.00 MAX
0.30 – 0.50 REF
1.90 BSC
0.09 – 0.20
(NOTE 3)
NOTE:
S5 TSOT-23 0302
1. DIMENSIONS ARE IN MILLIMETERS
2. DRAWING NOT TO SCALE
3. DIMENSIONS ARE INCLUSIVE OF PLATING
4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR
5. MOLD FLASH SHALL NOT EXCEED 0.254mm
6. JEDEC PACKAGE REFERENCE IS MO-193
620567f
13
LT6205/LT6206/LT6207
U
PACKAGE DESCRIPTIO
MS8 Package
8-Lead Plastic MSOP
(Reference LTC DWG # 05-08-1660)
0.889 ± 0.127
(.035 ± .005)
5.23
(.206)
MIN
3.20 – 3.45
(.126 – .136)
3.00 ± 0.102
(.118 ± .004)
(NOTE 3)
0.52
(.0205)
REF
0.65
(.0256)
BSC
0.42 ± 0.038
(.0165 ± .0015)
TYP
8
7 6 5
RECOMMENDED SOLDER PAD LAYOUT
3.00 ± 0.102
(.118 ± .004)
(NOTE 4)
4.90 ± 0.152
(.193 ± .006)
DETAIL “A”
0.254
(.010)
0° – 6° TYP
GAUGE PLANE
1
2
3
4
0.53 ± 0.152
(.021 ± .006)
1.10
(.043)
MAX
0.86
(.034)
REF
DETAIL “A”
0.18
(.007)
SEATING
PLANE
0.22 – 0.38
(.009 – .015)
TYP
0.127 ± 0.076
(.005 ± .003)
0.65
(.0256)
BSC
MSOP (MS8) 0603
NOTE:
1. DIMENSIONS IN MILLIMETER/(INCH)
2. DRAWING NOT TO SCALE
3. DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS.
MOLD FLASH, PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.152mm (.006") PER SIDE
4. DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS.
INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.152mm (.006") PER SIDE
5. LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.102mm (.004") MAX
620567f
14
LT6205/LT6206/LT6207
U
PACKAGE DESCRIPTIO
GN Package
16-Lead Plastic SSOP (Narrow .150 Inch)
(Reference LTC DWG # 05-08-1641)
.189 – .196*
(4.801 – 4.978)
.045 ±.005
.009
(0.229)
REF
16 15 14 13 12 11 10 9
.254 MIN
.150 – .165
.229 – .244
.150 – .157**
(5.817 – 6.198)
(3.810 – 3.988)
.0165 ±.0015
.0250 TYP
RECOMMENDED SOLDER PAD LAYOUT
1
2
3
4
5
6
7
8
.015 ± .004
(0.38 ± 0.10)
× 45°
.053 – .068
(1.351 – 1.727)
.004 – .0098
(0.102 – 0.249)
.007 – .0098
(0.178 – 0.249)
0° – 8° TYP
.016 – .050
(0.406 – 1.270)
.0250
(0.635)
BSC
.008 – .012
(0.203 – 0.305)
NOTE:
1. CONTROLLING DIMENSION: INCHES
INCHES
2. DIMENSIONS ARE IN
(MILLIMETERS)
GN16 (SSOP) 0502
3. DRAWING NOT TO SCALE
*DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
**DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD
FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
620567f
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tationthattheinterconnectionofitscircuitsasdescribedhereinwillnotinfringeonexistingpatentrights.
15
LT6205/LT6206/LT6207
U
TYPICAL APPLICATIO
YPBPR to RGB Converter
5V
CMPD6001S
36Ω
FMMT3906
1µF
150Ω
150Ω
R
4.7k
4
75Ω
165Ω
499Ω
1
2
16
15
499Ω
107Ω
80.6Ω
–
+
–
150Ω
150Ω
B
3
5
14
+
Y
75Ω
75Ω
LT6207
12
+
–
+
6
7
11
–
499Ω
365Ω
499Ω
10
150Ω
150Ω
P
B
13
95.3Ω
133Ω
174Ω
G
P
R
75Ω
F
≈ 40MHz
R = Y + 1.4 • P
3dB
≤ 60mA
R
I
S
B = Y + 1.8 • P
1µF
B
BLACK LEVELS ≈ 0V
G = Y – 0.34 • P – 0.71 • P
B R
620567 TA03
–5V
RELATED PARTS
PART NUMBER
DESCRIPTION
COMMENTS
LT1253/LT1254
Low Cost Dual and Quad Video Amplifiers
–3dB Bandwidth = 90MHz, Current Feedback
0.1dB Flatness to 100MHz, 80mA Output Drive
LT1395/LT1396/LT1397 Single Dual Quad 400MHz Current Feedback Amplifiers
LT1675
RGB Multiplexer with Current Feedback Amplifiers
Single/Dual, 180MHz, Rail-to-Rail Input and Output Amplifiers 350V/µs Slew Rate, Shutdown, Low Distortion –90dBc at 5MHz
–3dB Bandwidth = 250MHz, 100MHz Pixel Switching
LT1809/LT1810
LT6550/LT6551
3.3V Triple and Quad Video Amplifiers
Internal Gain of 2, 110MHz –3dB Bandwidth, Input Common
Modes to Ground
LT6552
3.3V Single Supply Video Difference Amplifier
Differential or Single-Ended Gain Block, 600V/µs Slew Rate,
Input Common Modes to Ground
620567f
LT/TP 1003 1K • PRINTED IN USA
16 LinearTechnology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
●
●
LINEAR TECHNOLOGY CORPORATION 2003
(408) 432-1900 FAX: (408) 434-0507 www.linear.com
相关型号：
LT6206CMS8#TR
LT6206 - Dual, Single Supply 3V, 100MHz Video Op Amps; Package: MSOP; Pins: 8; Temperature Range: 0°C to 70°C
Linear
LT6206IMS8#TR
LT6206 - Dual, Single Supply 3V, 100MHz Video Op Amps; Package: MSOP; Pins: 8; Temperature Range: -40°C to 85°C
Linear
©2020 ICPDF网 联系我们和版权申明