1
LT1206
250mA/60MHz Current
Feedback Amplifier
D
U
ESCRIPTIO
S
FEATURE
s
250mA Minimum Output Drive Current
s
60MHz Bandwidth, A
V
= 2, R
L
= 100
s
900V/
s Slew Rate, A
V
= 2, R
L
= 50
s
0.02% Differential Gain, A
V
= 2, R
L
= 30
s
0.17
Differential Phase, A
V
= 2, R
L
= 30
s
High Input Impedance, 10M
s
Wide Supply Range,
5V to
15V
s
Shutdown Mode: I
S
< 200
A
s
Adjustable Supply Current
s
Stable with C
L
= 10,000pF
The LT1206 is a current feedback amplifier with high
output current drive capability and excellent video char-
acteristics. The LT1206 is stable with large capacitive
loads, and can easily supply the large currents required
by the capacitive loading. A shutdown feature switches
the device into a high impedance, low current mode,
reducing dissipation when the device is not in use. For
lower bandwidth applications, the supply current can be
reduced with a single external resistor. The low differen-
tial gain and phase, wide bandwidth, and the 250mA
minimum output current drive make the LT1206 well
suited to drive multiple cables in video systems.
The LT1206 is manufactured on Linear Technology's
proprietary complementary bipolar process.
TYPICAL APPLICATIO S
U
Noninverting Amplifier with Shutdown
LT1206 TA02
V
S
=
15V
R
L
=
R
F
= R
G
= 3k
APPLICATIO S
U
s
Video Amplifiers
s
Cable Drivers
s
RGB Amplifiers
s
Test Equipment Amplifiers
s
Buffers
+
LT1206
S/D**
15V
15V
C
COMP
0.01
F*
R
F
R
G
V
IN
5V
24k
15V
ENABLE
V
OUT
OPTIONAL, USE WITH CAPACITIVE LOADS
GROUND SHUTDOWN PIN FOR
NORMAL OPERATION
*
**
LT1206 TA01
COMP
74C906
Large-Signal Response, C
L
= 10,000pF
2
LT1206
A
U
G
W
A
W
U
W
A
R
BSOLUTE
XI
TI
S
Supply Voltage .....................................................
18V
Input Current ....................................................
15mA
Output Short-Circuit Duration (Note 1) ....... Continuous
Specified Temperature Range (Note 2) ...... 0
C to 70
C
Operating Temperature Range
LT1206C ........................................... 40
C to 85
C
Junction Temperature ......................................... 150
C
Storage Temperature Range ................. 65
C to 150
C
Lead Temperature (Soldering, 10 sec) ................. 300
C
ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
OS
Input Offset Voltage
T
A
= 25
C
3
10
mV
q
15
mV
Input Offset Voltage Drift
q
10
V/
C
I
IN
+
Noninverting Input Current
T
A
= 25
C
2
5
A
q
20
A
I
IN
Inverting Input Current
T
A
= 25
C
10
60
A
q
100
A
e
n
Input Noise Voltage Density
f = 10kHz, R
F
= 1k, R
G
= 10
, R
S
= 0
3.6
nV/
Hz
+i
n
Input Noise Current Density
f = 10kHz, R
F
= 1k, R
G
= 10
, R
S
= 10k
2
pA/
Hz
i
n
Input Noise Current Density
f = 10kHz, R
F
= 1k, R
G
= 10
, R
S
= 10k
30
pA/
Hz
R
IN
Input Resistance
V
IN
=
12V, V
S
=
15V
q
1.5
10
M
V
IN
=
2V, V
S
=
5V
q
0.5
5
M
C
IN
Input Capacitance
V
S
=
15V
2
pF
Input Voltage Range
V
S
=
15V
q
12
13.5
V
V
S
=
5V
q
2
3.5
V
JA
= 100
C/W
JA
60
C/W
PART MARKING
1206
ORDER PART
NUMBER
ORDER PART
NUMBER
ORDER PART
NUMBER
1
2
3
4
8
7
6
5
TOP VIEW
NC
IN
+IN
S/D*
V
+
OUT
V
COMP
N8 PACKAGE
8-LEAD PLASTIC DIP
1
2
3
4
8
7
6
5
TOP VIEW
V
+
OUT
V
COMP
V
+
IN
+IN
S/D*
S8 PACKAGE
8-LEAD PLASTIC SO
ORDER PART
NUMBER
LT1206CN8**
LT1206CR**
LT1206CS8**
LT1206CY**
W
U
U
PACKAGE/ORDER I FOR ATIO
*Ground shutdown pin for normal operation **See Note 2
V
CM
= 0,
5V
V
S
15V, pulse tested, V
S/D
= 0V, unless otherwise noted.
OUT
V
COMP
V
+
S/D*
+IN
IN
R PACKAGE
7-LEAD PLASTIC DD
FRONT VIEW
7
6
5
4
3
2
1
TAB IS
V
+
JA
30
C/W
Y PACKAGE
7-LEAD TO-220
OUT
V
COMP
V
+
S/D*
+IN
IN
FRONT VIEW
7
6
5
4
3
2
1
TAB IS
V
+
JC
= 5
C/W
3
LT1206
ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
CMRR
Common-Mode Rejection Ratio
V
S
=
15V, V
CM
=
12V
q
55
62
dB
V
S
=
5V, V
CM
=
2V
q
50
60
dB
Inverting Input Current
V
S
=
15V, V
CM
=
12V
q
0.1
10
A/V
Common-Mode Rejection
V
S
=
5V, V
CM
=
2V
q
0.1
10
A/V
PSRR
Power Supply Rejection Ratio
V
S
=
5V to
15V
q
60
77
dB
Noninverting Input Current
V
S
=
5V to
15V
q
30
500
nA/V
Power Supply Rejection
Inverting Input Current
V
S
=
5V to
15V
q
0.7
5
A/V
Power Supply Rejection
A
V
Large-Signal Voltage Gain
V
S
=
15V, V
OUT
=
10V, R
L
= 50
q
55
71
dB
V
S
=
5V, V
OUT
=
2V, R
L
= 25
q
55
68
dB
R
OL
Transresistance,
V
OUT
/
I
IN
V
S
=
15V, V
OUT
=
10V, R
L
= 50
q
100
260
k
V
S
=
5V, V
OUT
=
2V, R
L
= 25
q
75
200
k
V
OUT
Maximum Output Voltage Swing
V
S
=
15V, R
L
= 50
, T
A
= 25
C
11.5
12.5
V
q
10.0
V
V
S
=
5V, R
L
= 25
, T
A
= 25
C
2.5
3.0
V
q
2.0
V
I
OUT
Maximum Output Current
R
L
= 1
q
250
500
1200
mA
I
S
Supply Current
V
S
=
15V, V
S/D
= 0V, T
A
= 25
C
20
30
mA
q
35
mA
Supply Current, R
S/D
= 51k (Note 3)
V
S
=
15V, T
A
= 25
C
12
17
mA
Positive Supply Current, Shutdown
V
S
=
15V, V
S/D
= 15V
q
200
A
Output Leakage Current, Shutdown
V
S
=
15V, V
S/D
= 15V
q
10
A
SR
Slew Rate (Note 4)
A
V
= 2, T
A
= 25
C
400
900
V/
s
Differential Gain (Note 5)
V
S
=
15V, R
F
= 560
, R
G
= 560
, R
L
= 30
0.02
%
Differential Phase (Note 5)
V
S
=
15V, R
F
= 560
, R
G
= 560
, R
L
= 30
0.17
DEG
BW
Small-Signal Bandwidth
V
S
=
15V, Peaking
0.5dB
60
MHz
R
F
= R
G
= 620
, R
L
= 100
V
S
=
15V, Peaking
0.5dB
52
MHz
R
F
= R
G
= 649
, R
L
= 50
V
S
=
15V, Peaking
0.5dB
43
MHz
R
F
= R
G
= 698
, R
L
= 30
V
S
=
15V, Peaking
0.5dB
27
MHz
R
F
= R
G
= 825
, R
L
= 10
V
CM
= 0,
5V
V
S
15V, pulse tested, V
S/D
= 0V, unless otherwise noted.
beyond 0
C to 70
C. Industrial grade parts tested over 40
C to 85
C are
available on special request. Consult factory.
Note 3: R
S/D
is connected between the shutdown pin and ground.
Note 4: Slew rate is measured at
5V on a
10V output signal while
operating on
15V supplies with R
F
= 1.5k, R
G
= 1.5k and R
L
= 400
.
Note 5: NTSC composite video with an output level of 2V.
The
q
denotes specifications which apply for 0
C
T
A
70
C.
Note 1: Applies to short circuits to ground only. A short circuit between
the output and either supply may permanently damage the part when
operated on supplies greater than
10V.
Note 2: Commercial grade parts are designed to operate over the
temperature range of 40
C to 85
C but are neither tested nor guaranteed
4
LT1206
S ALL-SIG AL BA DWIDTH
W
U
U
I
S
= 20mA Typical, Peaking
0.1dB
I
S
= 10mA Typical, Peaking
0.1dB
I
S
= 5mA Typical, Peaking
0.1dB
3dB BW
0.1dB BW
A
V
R
L
R
F
R
G
(MHz)
(MHz)
V
S
=
5V, R
SD
= 22.1k
1
150
604
604
21
10.5
30
715
715
14.6
7.4
10
681
681
10.5
6.0
1
150
768
20
9.6
30
866
14.1
6.7
10
825
9.8
5.1
2
150
634
634
20
9.6
30
750
750
14.1
7.2
10
732
732
9.6
5.1
10
150
100
11.1
16.2
5.8
30
100
11.1
13.4
7.0
10
100
11.1
9.5
4.7
3dB BW
0.1dB BW
A
V
R
L
R
F
R
G
(MHz)
(MHz)
V
S
=
15V, R
SD
= 121k
1
150
619
619
25
12.5
30
787
787
15.8
8.5
10
825
825
10.5
5.4
1
150
845
23
10.6
30
1k
15.3
7.6
10
1k
10
5.2
2
150
681
681
23
10.2
30
845
845
15
7.7
10
866
866
10
5.4
10
150
100
11.1
15.9
4.5
30
100
11.1
13.6
6
10
100
11.1
9.6
4.5
3dB BW
0.1dB BW
A
V
R
L
R
F
R
G
(MHz)
(MHz)
V
S
=
5V, R
SD
= 0
1
150
562
562
48
21.4
30
649
649
34
17
10
732
732
22
12.5
1
150
619
54
22.3
30
715
36
17.5
10
806
22.4
11.5
2
150
576
576
48
20.7
30
649
649
35
18.1
10
750
750
22.4
11.7
10
150
442
48.7
40
19.2
30
511
56.2
31
16.5
10
649
71.5
20
10.2
3dB BW
0.1dB BW
A
V
R
L
R
F
R
G
(MHz)
(MHz)
V
S
=
5V, R
SD
= 0
1
150
681
681
50
19.2
30
768
768
35
17
10
887
887
24
12.3
1
150
768
66
22.4
30
909
37
17.5
10
1k
23
12
2
150
665
665
55
23
30
787
787
36
18.5
10
931
931
22.5
11.8
10
150
487
536
44
20.7
30
590
64.9
33
17.5
10
768
84.5
20.7
10.8
3dB BW
0.1dB BW
A
V
R
L
R
F
R
G
(MHz)
(MHz)
V
S
=
5V, R
SD
= 10.2k
1
150
576
576
35
17
30
681
681
25
12.5
10
750
750
16.4
8.7
1
150
665
37
17.5
30
768
25
12.6
10
845
16.5
8.2
2
150
590
590
35
16.8
30
681
681
25
13.4
10
768
768
16.2
8.1
10
150
301
33.2
31
15.6
30
392
43.2
23
11.9
10
499
54.9
15
7.8
3dB BW
0.1dB BW
A
V
R
L
R
F
R
G
(MHz)
(MHz)
V
S
=
15V, R
SD
= 60.4k
1
150
634
634
41
19.1
30
768
768
26.5
14
10
866
866
17
9.4
1
150
768
44
18.8
30
909
28
14.4
10
1k
16.8
8.3
2
150
649
649
40
18.5
30
787
787
27
14.1
10
931
931
16.5
8.1
10
150
301
33.2
33
15.6
30
402
44.2
25
13.3
10
590
64.9
15.3
7.4
5
LT1206
TYPICAL PERFOR A CE CHARACTERISTICS
W U
4
0
10
30
40
50
100
70
8
12
20
80
90
60
6
10
14
16
18
SUPPLY VOLTAGE (V)
3dB BANDWIDTH (MHz)
LT1206 TPC01
PEAKING
0.5dB
PEAKING
5dB
R
F
= 470
R
F
= 560
R
F
= 680
R
F
= 750
R
F
= 1k
R
F
= 1.5k
A
V
= 2
R
L
= 100
Bandwidth and Feedback Resistance
vs Capacitive Load for 0.5dB Peak
CAPACITIVE LOAD (pF)
1
100
FEEDBACK RESISTOR (
)
1k
10k
100
10000
LT1206 TPC03
10
1000
BANDWIDTH
FEEDBACK RESISTOR
A
V
= 2
R
L
=
V
S
= 15V
C
COMP
= 0.01
F
1
10
100
3dB BANDWIDTH (MHz)
4
0
20
50
8
12
10
40
30
6
10
14
16
18
SUPPLY VOLTAGE (V)
3dB BANDWIDTH (MHz)
LT1206 TPC02
PEAKING
0.5dB
PEAKING
5dB
R
F
= 560
R
F
= 1k
R
F
= 2k
R
F
= 750
A
V
= 2
R
L
= 10
Bandwidth vs Supply Voltage
Bandwidth vs Supply Voltage
Bandwidth vs Supply Voltage
Bandwidth vs Supply Voltage
4
0
10
30
40
50
100
70
8
12
20
80
90
60
6
10
14
16
18
SUPPLY VOLTAGE (V)
3dB BANDWIDTH (MHz)
LT1206 TPC04
PEAKING
0.5dB
PEAKING
5dB
R
F
= 470
R
F
= 1.5k
R
F
= 330
R
F
= 680
R
F
=390
A
V
= 10
R
L
= 100
4
0
20
50
8
12
10
40
30
6
10
14
16
18
SUPPLY VOLTAGE (V)
3dB BANDWIDTH (MHz)
LT1206 TPC05
PEAKING
0.5dB
PEAKING
5dB
R
F
= 560
R
F
= 1k
R
F
= 1.5k
R
F
= 680
A
V
= 10
R
L
= 10
SUPPLY VOLTAGE (V)
5
DIFFERENTIAL PHASE (DEG)
0.30
0.40
0.50
13
LT1206 TPC07
0.20
0.10
0
7
9
11
15
R
F
= R
G
= 560
A
V
= 2
N PACKAGE
R
L
= 15
R
L
= 50
R
L
= 30
R
L
= 150
SUPPLY VOLTAGE (V)
5
DIFFERENTIAL GAIN (%)
0.06
0.08
0.10
13
LT1206 TPC08
0.04
0.02
0
7
9
11
15
R
F
= R
G
= 560
A
V
= 2
N PACKAGE
R
L
= 15
R
L
= 30
R
L
= 150
R
L
= 50
Spot Noise Voltage and Current
vs Frequency
FREQUENCY (Hz)
10
1
10
100
100
100k
LT1206 TPC09
1k
10k
SPOT NOISE (nV/
Hz OR pA/
Hz)
i
n
e
n
i
n
Differential Gain
vs Supply Voltage
Differential Phase
vs Supply Voltage
Bandwidth and Feedback Resistance
vs Capacitive Load for 5dB Peak
CAPACITIVE LOAD (pF)
FEEDBACK RESISTOR (
)
1
LT1206 TPC06
10
100
1k
10k
0
3dB BANDWIDTH (MHz)
1k
10k
0
100
10
100
1
FEEDBACK RESISTOR
BANDWIDTH
A
V
= +2
R
L
=
V
S
= 15V
C
COMP
= 0.01
F
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