LT1206
250mA/60MHz Current
Feedback Amplifier
FEATURES
s
s
s
s
s
s
s
s
s
s
DESCRIPTIO
250mA Minimum Output Drive Current
60MHz Bandwidth, A
V
= 2, R
L
= 100Ω
900V/µs Slew Rate, A
V
= 2, R
L
= 50Ω
0.02% Differential Gain, A
V
= 2, R
L
= 30Ω
0.17° Differential Phase, A
V
= 2, R
L
= 30Ω
High Input Impedance, 10MΩ
Wide Supply Range,
±5V
to
±15V
Shutdown Mode: I
S
< 200µA
Adjustable Supply Current
Stable with C
L
= 10,000pF
APPLICATIO S
s
s
s
s
s
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.
Video Amplifiers
Cable Drivers
RGB Amplifiers
Test Equipment Amplifiers
Buffers
TYPICAL APPLICATIO S
Noninverting Amplifier with Shutdown
15V
V
IN
Large-Signal Response, C
L
= 10,000pF
+
LT1206 COMP
C
COMP
–
S/D**
0.01µF*
–15V
R
F
15V
5V
R
G
24k
74C906
LT1206 • TA01
V
OUT
*OPTIONAL, USE WITH CAPACITIVE LOADS
**GROUND SHUTDOWN PIN FOR
NORMAL OPERATION
V
S
=
±15V
R
L
=
∞
R
F
= R
G
= 3k
ENABLE
LT1206 • TA02
U
U
U
1
LT1206
ABSOLUTE
AXI U
RATI GS
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
Supply Voltage .....................................................
±18V
Input Current ....................................................
±15mA
Output Short-Circuit Duration (Note 1) ....... Continuous
Specified Temperature Range (Note 2) ...... 0°C to 70°C
PACKAGE/ORDER I FOR ATIO
TOP VIEW
NC 1
–IN 2
+IN 3
S/D* 4
8
7
6
5
V
+
OUT
V
–
COMP
ORDER PART
NUMBER
LT1206CN8**
N8 PACKAGE
8-LEAD PLASTIC DIP
θ
JA
= 100°C/W
FRONT VIEW
7
6
5
4
3
2
1
OUT
V
–
COMP
V
+
S/D*
+IN
–IN
ORDER PART
NUMBER
LT1206CR**
TAB IS
V
+
TAB IS
V
+
R PACKAGE
7-LEAD PLASTIC DD
θ
JA
≈
30°C/W
*Ground shutdown pin for normal operation
**See Note 2
ELECTRICAL CHARACTERISTICS
V
CM
= 0,
±5V ≤
V
S
≤ ±15V,
pulse tested, V
S/D
= 0V, unless otherwise noted.
SYMBOL
V
OS
PARAMETER
Input Offset Voltage
Input Offset Voltage Drift
I
IN
+
I
IN
e
n
+i
n
–i
n
R
IN
C
IN
–
CONDITIONS
T
A
= 25°C
q
q
Noninverting Input Current
Inverting Input Current
Input Noise Voltage Density
Input Noise Current Density
Input Noise Current Density
Input Resistance
Input Capacitance
Input Voltage Range
T
A
= 25°C
q
T
A
= 25°C
q
f = 10kHz, R
F
= 1k, R
G
= 10Ω, R
S
= 0Ω
f = 10kHz, R
F
= 1k, R
G
= 10Ω, R
S
= 10k
f = 10kHz, R
F
= 1k, R
G
= 10Ω, R
S
= 10k
V
IN
=
±12V,
V
S
=
±15V
V
IN
=
±2V,
V
S
=
±5V
V
S
=
±15V
V
S
=
±15V
V
S
=
±5V
q
q
q
q
2
U
U
W
W W
U
W
TOP VIEW
V
+
1
–IN 2
+IN 3
S/D* 4
8
7
6
5
V
+
OUT
V
–
COMP
ORDER PART
NUMBER
LT1206CS8**
PART MARKING
1206
ORDER PART
NUMBER
LT1206CY**
S8 PACKAGE
8-LEAD PLASTIC SO
θ
JA
≈
60°C/W
FRONT VIEW
7
6
5
4
3
2
1
Y PACKAGE
7-LEAD TO-220
OUT
V
–
COMP
V
+
S/D*
+IN
–IN
θ
JC
= 5°C/W
MIN
TYP
±3
10
±2
±10
3.6
2
30
MAX
±10
±15
±5
±20
±60
±100
UNITS
mV
mV
µV/°C
µA
µA
µA
µA
nV/√Hz
pA/√Hz
pA/√Hz
MΩ
MΩ
pF
V
V
1.5
0.5
±12
±2
10
5
2
±13.5
±3.5
LT1206
ELECTRICAL CHARACTERISTICS
V
CM
= 0,
±5V ≤
V
S
≤ ±15V,
pulse tested, V
S/D
= 0V, unless otherwise noted.
SYMBOL
CMRR
PARAMETER
Common-Mode Rejection Ratio
Inverting Input Current
Common-Mode Rejection
PSRR
Power Supply Rejection Ratio
Noninverting Input Current
Power Supply Rejection
Inverting Input Current
Power Supply Rejection
A
V
R
OL
V
OUT
Large-Signal Voltage Gain
Transresistance,
∆V
OUT
/∆I
IN–
Maximum Output Voltage Swing
CONDITIONS
V
S
=
±15V,
V
CM
=
±12V
V
S
=
±5V,
V
CM
=
±2V
V
S
=
±15V,
V
CM
=
±12V
V
S
=
±5V,
V
CM
=
±2V
V
S
=
±5V
to
±15V
V
S
=
±5V
to
±15V
V
S
=
±5V
to
±15V
V
S
=
±15V,
V
OUT
=
±10V,
R
L
= 50Ω
V
S
=
±5V,
V
OUT
=
±2V,
R
L
= 25Ω
V
S
=
±15V,
V
OUT
=
±10V,
R
L
= 50Ω
V
S
=
±5V,
V
OUT
=
±2V,
R
L
= 25Ω
V
S
=
±15V,
R
L
= 50Ω, T
A
= 25°C
V
S
=
±5V,
R
L
= 25Ω, T
A
= 25°C
I
OUT
I
S
Maximum Output Current
Supply Current
Supply Current, R
S/D
= 51k (Note 3)
Positive Supply Current, Shutdown
Output Leakage Current, Shutdown
SR
Slew Rate (Note 4)
Differential Gain (Note 5)
Differential Phase (Note 5)
BW
Small-Signal Bandwidth
R
L
= 1Ω
V
S
=
±15V,
V
S/D
= 0V, T
A
= 25°C
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
MIN
55
50
TYP
62
60
0.1
0.1
MAX
UNITS
dB
dB
10
10
500
5
µA/V
µA/V
dB
nA/V
µA/V
dB
dB
kΩ
kΩ
V
V
V
V
60
77
30
0.7
55
55
100
75
±11.5
±10.0
±2.5
±2.0
250
71
68
260
200
±12.5
±3.0
500
20
12
1200
30
35
17
200
10
mA
mA
mA
mA
µA
µA
V/µs
%
DEG
MHz
MHz
MHz
MHz
V
S
=
±15V,
T
A
= 25°C
V
S
=
±15V,
V
S/D
= 15V
V
S
=
±15V,
V
S/D
= 15V
A
V
= 2, T
A
= 25°C
V
S
=
±15V,
R
F
= 560Ω, R
G
= 560Ω, R
L
= 30Ω
V
S
=
±15V,
R
F
= 560Ω, R
G
= 560Ω, R
L
= 30Ω
V
S
=
±15V,
Peaking
≤
0.5dB
R
F
= R
G
= 620Ω, R
L
= 100Ω
V
S
=
±15V,
Peaking
≤
0.5dB
R
F
= R
G
= 649Ω, R
L
= 50Ω
V
S
=
±15V,
Peaking
≤
0.5dB
R
F
= R
G
= 698Ω, R
L
= 30Ω
V
S
=
±15V,
Peaking
≤
0.5dB
R
F
= R
G
= 825Ω, R
L
= 10Ω
q
q
400
900
0.02
0.17
60
52
43
27
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
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
= 400Ω.
Note 5:
NTSC composite video with an output level of 2V.
3
LT1206
S ALL-SIG AL BA DWIDTH
I
S
= 20mA Typical, Peaking
≤
0.1dB
A
V
R
L
R
F
562
649
732
619
715
806
576
649
750
442
511
649
R
G
562
649
732
–
–
–
576
649
750
48.7
56.2
71.5
– 3dB BW
(MHz)
48
34
22
54
36
22.4
48
35
22.4
40
31
20
– 0.1dB BW
(MHz)
21.4
17
12.5
22.3
17.5
11.5
20.7
18.1
11.7
19.2
16.5
10.2
A
V
R
L
R
F
681
768
887
768
909
1k
665
787
931
487
590
768
R
G
681
768
887
–
–
–
665
787
931
536
64.9
84.5
– 3dB BW
(MHz)
50
35
24
66
37
23
55
36
22.5
44
33
20.7
– 0.1dB BW
(MHz)
19.2
17
12.3
22.4
17.5
12
23
18.5
11.8
20.7
17.5
10.8
V
S
=
±5V,
R
SD
= 0Ω
–1
150
30
10
1
150
30
10
2
150
30
10
10
150
30
10
I
S
= 10mA Typical, Peaking
≤
0.1dB
A
V
R
L
R
F
R
G
576
681
750
–
–
–
590
681
768
33.2
43.2
54.9
– 3dB BW
(MHz)
35
25
16.4
37
25
16.5
35
25
16.2
31
23
15
– 0.1dB BW
(MHz)
17
12.5
8.7
17.5
12.6
8.2
16.8
13.4
8.1
15.6
11.9
7.8
A
V
R
L
R
F
R
G
634
768
866
–
–
–
649
787
931
33.2
44.2
64.9
– 3dB BW
(MHz)
41
26.5
17
44
28
16.8
40
27
16.5
33
25
15.3
– 0.1dB BW
(MHz)
19.1
14
9.4
18.8
14.4
8.3
18.5
14.1
8.1
15.6
13.3
7.4
V
S
=
±5V,
R
SD
= 10.2k
–1
150
576
30
681
10
750
1
150
665
30
768
10
845
2
150
590
30
681
10
768
10
150
301
30
392
10
499
I
S
= 5mA Typical, Peaking
≤
0.1dB
A
V
–1
R
L
150
30
10
150
30
10
150
30
10
150
30
10
R
F
604
715
681
768
866
825
634
750
732
100
100
100
R
G
604
715
681
–
–
–
634
750
732
11.1
11.1
11.1
– 3dB BW
(MHz)
21
14.6
10.5
20
14.1
9.8
20
14.1
9.6
16.2
13.4
9.5
– 0.1dB BW
(MHz)
10.5
7.4
6.0
9.6
6.7
5.1
9.6
7.2
5.1
5.8
7.0
4.7
A
V
–1
R
L
150
30
10
150
30
10
150
30
10
150
30
10
R
F
619
787
825
845
1k
1k
681
845
866
100
100
100
R
G
619
787
825
–
–
–
681
845
866
11.1
11.1
11.1
– 3dB BW
(MHz)
25
15.8
10.5
23
15.3
10
23
15
10
15.9
13.6
9.6
– 0.1dB BW
(MHz)
12.5
8.5
5.4
10.6
7.6
5.2
10.2
7.7
5.4
4.5
6
4.5
V
S
=
±5V,
R
SD
= 22.1k
1
2
10
4
U
U
W
V
S
=
±5V,
R
SD
= 0Ω
–1
150
30
10
1
150
30
10
2
150
30
10
10
150
30
10
V
S
=
±15V,
R
SD
= 60.4k
–1
150
634
30
768
10
866
1
150
768
30
909
10
1k
2
150
649
30
787
10
931
10
150
301
30
402
10
590
V
S
=
±15V,
R
SD
= 121k
1
2
10
LT1206
TYPICAL PERFOR A CE CHARACTERISTICS
Bandwidth vs Supply Voltage
100
90
– 3dB BANDWIDTH (MHz)
PEAKING
≤
0.5dB
PEAKING
≤
5dB
R
F
= 470Ω
R
F
= 560Ω
A
V
= 2
R
L
= 100Ω
FEEDBACK RESISTOR (Ω)
–3dB BANDWIDTH (MHz)
80
70
60
50
40
30
20
10
0
4
6
14
12
10
8
SUPPLY VOLTAGE (±V)
16
18
R
F
= 1k
R
F
= 1.5k
R
F
= 750Ω
R
F
= 680Ω
LT1206 • TPC01
Bandwidth vs Supply Voltage
100
90
PEAKING
≤
0.5dB
PEAKING
≤
5dB
A
V
= 10
R
L
= 100Ω
– 3dB BANDWIDTH (MHz)
FEEDBACK RESISTOR (Ω)
–3dB BANDWIDTH (MHz)
80
70
60
50
40
30
20
10
0
4
6
14
12
10
8
SUPPLY VOLTAGE (±V)
16
18
R
F
= 680Ω
R
F
= 1.5k
R
F
= 470Ω
R
F
=390Ω
R
F
= 330Ω
LT1206 • TPC04
Differential Phase
vs Supply Voltage
0.50
R
L
= 15Ω
0.10
DIFFERENTIAL PHASE (DEG)
0.40
0.08
R
L
= 15Ω
SPOT NOISE (nV/√Hz OR pA/√Hz)
0.30
DIFFERENTIAL GAIN (%)
0.20
R
F
= R
G
= 560Ω
A
V
= 2
N PACKAGE
R
L
= 30Ω
R
L
= 50Ω
R
L
= 150Ω
0.10
0
5
7
11
13
9
SUPPLY VOLTAGE (±V)
15
LT1206 • TPC07
U W
Bandwidth vs Supply Voltage
50
PEAKING
≤
0.5dB
PEAKING
≤
5dB
40
R
F
= 560Ω
30
R
F
= 750Ω
R
F
= 1k
R
F
= 2k
10
A
V
= 2
R
L
= 10Ω
Bandwidth and Feedback Resistance
vs Capacitive Load for 0.5dB Peak
10k
BANDWIDTH
–3dB BANDWIDTH (MHz)
100
1k
FEEDBACK RESISTOR
A
V
= 2
R
L
=
∞
V
S
= ±15V
C
COMP
= 0.01µF
1
100
10
1000
CAPACITIVE LOAD (pF)
10
20
0
4
6
14
12
10
8
SUPPLY VOLTAGE (±V)
16
18
100
1
10000
LT1206 • TPC03
LT1206 • TPC02
Bandwidth vs Supply Voltage
50
PEAKING
≤
0.5dB
PEAKING
≤
5dB
40
A
V
= 10
R
L
= 10Ω
10k
Bandwidth and Feedback Resistance
vs Capacitive Load for 5dB Peak
100
BANDWIDTH
–3dB BANDWIDTH (MHz)
30
R
F
= 560Ω
R
F
= 680Ω
R
F
= 1k
1k
10
20
10
R
F
= 1.5k
0
100
4
6
14
12
10
8
SUPPLY VOLTAGE (±V)
16
18
1
FEEDBACK RESISTOR
0
A
V
= +2
R
L
=
∞
V
S
= ±15V
C
COMP
= 0.01µF
10
100
1k
CAPACITIVE LOAD (pF)
1
10k
LT1206 • TPC05
LT1206 • TPC06
Differential Gain
vs Supply Voltage
100
R
F
= R
G
= 560Ω
A
V
= 2
N PACKAGE
Spot Noise Voltage and Current
vs Frequency
–i
n
0.06
R
L
= 30Ω
0.04
R
L
= 50Ω
10
e
n
i
n
1
10
0.02
R
L
= 150Ω
0
5
7
11
13
9
SUPPLY VOLTAGE (±V)
15
100
1k
10k
FREQUENCY (Hz)
100k
LT1206 • TPC09
LT1206 • TPC08
5
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