LT1210X
High Temperature 1.0A,
35MHz Current Feedback Amplifier
FEATURES
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DESCRIPTION
The
LT
®
1210X
is a current feedback amplifier with high
output current and excellent large-signal characteristics.
The combination of high slew rate, 1.0A output drive and
±15V operation enables the device to deliver significant
power at frequencies in the 1MHz to 2MHz range. Short-
circuit protection ensures the device’s ruggedness. The
LT1210X is stable with large capacitive loads, and can
easily supply the large currents required by the capaci-
tive loading. A shutdown feature switches the device
into a high impedance and low supply 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 LT1210X is a member of a growing series of high
temperature qualified products offered by Analog
Devices. For a complete selection of high temperature
products, please consult our website
www.linear.com
The LT1210X is available in the thermally enhanced
TSSOP16-E package for operation with supplies from
±5V up to ± 15V. The LT1210X is also available as dice.
All registered trademarks and trademarks are the property of their respective owners.
Extreme High Temperature Operation: –40°C to 175°C
1.0A Minimum Output Drive Current
35MHz Bandwidth, A
V
= 2, R
L
= 10
900V/µs Slew Rate, A
V
= 2, R
L
= 10
High Input Impedance: 10M
Wide Supply Range: ± 5V to ±15V
Shutdown Mode: I
S
< 200µA
Adjustable Supply Current
Stable with C
L
= 10,000pF
Available as Dice
Available in 16-Lead Thermally Enhanced TSSOP
Package
APPLICATIONS
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Down-Hole Drilling and Instrumentation
Heavy Industrial
Avionics
High Temperature Environments
Cable Drivers
Buffers
Test Equipment Amplifiers
Video Amplifiers
ADSL Drivers
TYPICAL APPLICATION
Twisted Pair Driver
15V
4.7µF
100nF
R
T
11
2.5W
TOTAL HARMONIC DISTORTION (dB)
Total Harmonic Distortion vs Frequency
–50
V
S
= ±15V
V
OUT
= 20V
P-P
A
V
= 4
–60
V
IN
+
–
LT1210X
SD
T1**
1
3
R
L
100
2.5W
–70
R
L
= 12.5
–80
R
L
= 10
R
L
= 50
4.7µF
–15V
100nF
845
** MIDCOM 671-7783 OR EQUIVALENT
274
1210X TA01
–90
–100
1k
10k
100k
FREQUENCY (Hz)
1M
1210X TA02
1210Xfa
For more information
www.linear.com/LT1210X
1
LT1210X
ABSOLUTE MAXIMUM RATINGS
(Note 1)
PIN CONFIGURATION
TOP VIEW
V
+
NC
OUT
NC
NC
–IN
NC
V
+
1
2
3
4
5
6
7
8
17
16 V
+
15 NC
14 V
–
13 COMP
12 SHUTDOWN
11 +IN
10 NC
9
V
+
Supply Voltage ..................................................... ± 18V
Input Current....................................................... ±15mA
Output Short-Circuit Duration
(Note 2) ..........................................Thermally Limited
Operating Temperature Range
LT1210X ............................................. –40°C to 175°C
Junction Temperature ........................................ 200°C
Storage Temperature Range ..................–65°C to 200°C
Lead Temperature (Soldering, 10 sec)................... 300°C
FE PACKAGE
16-LEAD PLASTIC TSSOP
θ
JA
= 45°C/W,
θ
JC(PAD)
= 10°C/W
EXPOSED PAD (PIN 17) IS V
+
. MUST BE SOLDERED TO LARGE COPPER PLANE
ORDER INFORMATION
TUBE
LT1210XFE#PBF
TAPE AND REEL
LT1210XFE#TRPBF
http://www.linear.com/product/LT1210X#orderinfo
PART MARKING
1210XFE
PACKAGE DESCRIPTION
16-Lead Plastic TSSOP
TEMPERATURE RANGE
–40°C to 175°C
For more information on lead free part marking, go to:
http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to:
http://www.linear.com/tapeandreel/.
Some packages are available in 500 unit reels through
designated sales channels with #TRMPBF suffix.
The
l
denotes the specifications which apply over the full operating
temperature range of –40°C to 175°C, otherwise specifications are at T
A
= 25°C. V
CM
= 0V, ± 5V ≤ V
S
≤ ± 15V, pulse tested, V
SD
= 0V,
unless otherwise noted.
SYMBOL
V
OS
PARAMETER
Input Offset Voltage
l
ELECTRICAL CHARACTERISTICS
CONDITIONS
MIN
TYP
±3
MAX
±15
±20
±5
±20
±60
±100
UNITS
mV
mV
µV/°C
µA
µA
µA
µA
nV/√Hz
pA/√Hz
pA/√Hz
MΩ
MΩ
pF
V
V
1210Xfa
Input Offset Voltage Drift
I
IN+
I
IN–
e
n
+i
n
–i
n
R
IN
C
IN
Noninverting Input Current
l
l
10
±2
±10
Inverting Input Current
l
Input Noise Voltage Density
Input Noise Current Density
Input Noise Current Density
Input Resistance
Input Capacitance
Input Voltage Range
f = 10kHz, R
F
= 1k , R
G
= 10 , R
S
= 0
f = 10kHz, R
F
= 1k , R
G
= 10 , R
S
= 10k
f = 10kHz, R
F
= 1k , R
G
= 10 , R
S
= 10k
V
IN
= ±12V, V
S
= ±15V
V
IN
= ±2V, V
S
= ±5V
V
S
= ±15V
V
S
= ±15V
V
S
= ± 5V
l
l
l
l
3.0
2.0
40
1.50
0.25
±12
±2
10
5
2
±13.5
±3.5
2
For more information
www.linear.com/LT1210X
LT1210X
ELECTRICAL CHARACTERISTICS
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
Large-Signal Voltage Gain
The
l
denotes the specifications which apply over the full operating
temperature range of –40°C to 175°C, otherwise specifications are at T
A
= 25°C. V
CM
= 0V, ± 5V ≤ V
S
≤ ± 15V, pulse tested, V
SD
= 0V,
unless otherwise noted.
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
T
A
= 25°C, V
S
= ± 15V, V
OUT
= ±10V,
R
L
= 10
V
S
= ± 15V, V
OUT
= ±5.5V, R
L
= 10
V
S
= ±5V, V
OUT
= ±2V, R
L
= 10
R
OL
Transresistance,
∆V
OUT
/∆I
IN
–
MIN
l
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TYP
62
60
0.1
0.1
MAX
UNITS
dB
dB
55
50
10
10
500
5
µA/V
µA/V
dB
nA/V
µA/V
dB
dB
dB
kΩ
kΩ
kΩ
V
V
V
V
A
60
77
30
0.7
55
l
l
71
68
68
260
200
200
±11.5
±3.0
2.0
35
50
65
30
200
10
45
55
100
T
A
= 25°C, V
S
= ± 15V, V
OUT
= ±10V,
R
L
= 10
V
S
= ± 15V, V
OUT
= ±5.5V, R
L
= 10
V
S
= ±5V, V
OUT
= ±2V, R
L
= 10
l
l
l
l
l
l
24
75
±10.0
±8.5
±2.5
±2.0
1.0
V
OUT
Maximum Output Voltage Swing
T
A
= 25°C, V
S
= ± 15V, R
L
= 10
T
A
= 25°C, V
S
= ± 5V, R
L
= 10
I
OUT
I
S
Maximum Output Current
Supply Current
Supply Current, R
SD
= 51k (Note 3)
Positive Supply Current, Shutdown
Output Leakage Current, Shutdown
V
S
= ± 15V, R
L
= 1
T
A
= 25°C, V
S
= ±15V, V
SD
= 0V
T
A
= 25°C, V
S
= ±15V
V
S
= ± 15V, V
SD
= 15V
V
S
= ± 15V, V
SD
= 15V
T
A
= 25°C, A
V
= 2, R
L
= 400
T
A
= 25°C, A
V
= 2, R
L
= 10
V
S
= ±15V, R
F
= 750 , R
G
= 750 , R
L
= 15
V
S
= ±15V, R
F
= 750 , R
G
= 750 , R
L
= 15
A
V
= 2, V
S
= ±15V, Peaking ≤ 1dB,
R
F
= R
G
= 680 , R
L
= 100
A
V
= 2, V
S
= ± 15V, Peaking ≤ 1dB,
R
F
= R
G
= 576 , R
L
= 10
mA
mA
mA
µA
µA
V/µs
V/µs
%
DEG
MHz
MHz
15
l
l
SR
Slew Rate (Note 4)
Differential Gain (Note 5)
Differential Phase (Note 5)
400
900
900
0.3
0.1
55
35
BW
Small-Signal Bandwidth
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2:
A heat sink may be required to keep the junction temperature
below the Absolute Maximum rating. 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 3:
R
SD
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
= 1.5kΩ, R
G
= 1.5kΩ and R
L
= 400 .
Note 5:
NTSC composite video with an output level of 2V.
1210Xfa
For more information
www.linear.com/LT1210X
3
LT1210X
SMALL-SIGNAL BANDWIDTH
R
SD
= 0 , I
S
= 30mA, V
S
= ± 5V, Peaking ≤ 1dB
A
V
–1
R
L
( )
150
30
10
150
30
10
150
30
10
150
30
10
R
F
( )
549
590
619
604
649
619
562
590
576
392
383
215
R
G
( )
549
590
619
–
–
–
562
590
576
43.2
42.2
23.7
– 3dB BW
(MHz)
52.5
39.7
26.5
53.5
39.7
27.4
51.8
38.8
27.4
48.4
40.3
36.0
R
SD
= 0 , I
S
= 35mA, V
S
= ± 15V, Peaking ≤ 1dB
A
V
–1
R
L
( )
150
30
10
150
30
10
150
30
10
150
30
10
R
F
( )
604
649
665
750
866
845
665
715
576
453
432
221
R
G
( )
604
649
665
–
–
–
665
715
576
49.9
47.5
24.3
– 3dB BW
(MHz)
66.2
48.4
46.5
56.8
35.4
24.7
52.5
38.9
35.0
61.5
43.1
45.5
1
1
2
2
10
10
R
SD
= 7.5k , I
S
= 15mA, V
S
= ± 5V, Peaking ≤ 1dB
A
V
–1
R
L
( )
150
30
10
150
30
10
150
30
10
150
30
10
R
F
( )
562
619
604
634
681
649
576
604
576
324
324
210
R
G
( )
562
619
604
–
–
–
576
604
576
35.7
35.7
23.2
– 3dB BW
(MHz)
39.7
28.9
20.5
41.9
29.7
20.7
40.2
29.6
21.6
39.5
32.3
27.7
R
SD
= 47.5k , I
S
= 18mA, V
S
= ± 15V, Peaking ≤ 1dB
A
V
–1
R
L
( )
150
30
10
150
30
10
150
30
10
150
30
10
R
F
( )
619
698
698
732
806
768
634
698
681
348
357
205
R
G
( )
619
698
698
–
–
–
634
698
681
38.3
39.2
22.6
– 3dB BW
(MHz)
47.8
32.3
22.2
51.4
33.9
22.5
48.4
33.0
22.5
46.8
36.7
31.3
1
1
2
2
10
10
R
SD
= 15k , I
S
= 7.5mA, V
S
= ± 5V, Peaking ≤ 1dB
A
V
–1
R
L
( )
150
30
10
150
30
10
150
30
10
150
30
10
R
F
( )
536
549
464
619
634
511
536
549
412
150
118
100
R
G
( )
536
549
464
–
–
–
536
549
412
16.5
13.0
11.0
– 3dB BW
(MHz)
28.2
20.0
15.0
28.6
19.8
14.9
28.3
19.9
15.7
31.5
27.1
19.4
R
SD
= 82.5k , I
S
= 9mA, V
S
= ± 15V, Peaking ≤ 1dB
A
V
–1
R
L
( )
150
30
10
150
30
10
150
30
10
150
30
10
R
F
( )
590
649
576
715
768
649
590
665
549
182
182
100
R
G
( )
590
649
576
–
–
–
590
665
549
20.0
20.0
11.0
– 3dB BW
(MHz)
34.8
22.5
16.3
35.5
22.5
16.1
35.3
22.5
16.8
37.2
28.9
22.5
1
1
2
2
10
10
4
1210Xfa
For more information
www.linear.com/LT1210X
LT1210X
TYPICAL PERFORMANCE CHARACTERISTICS
Bandwidth vs Supply Voltage
100
90
–3dB BANDWIDTH (MHz)
80
70
60
50
40
30
20
10
0
4
6
R
F
= 1.5kΩ
14
12
10
8
SUPPLY VOLTAGE (±V)
16
18
0
4
6
14
12
10
8
SUPPLY VOLTAGE (±V)
16
18
100
1
R
F
= 680
R
F
= 1kΩ
R
F
= 470
PEAKING ≤ 1dB
PEAKING ≤ 5dB
A
V
= 2
R
L
= 100
–3dB BANDWIDTH (MHz)
50
PEAKING ≤ 1dB
PEAKING ≤ 5dB
40
R
F
= 560
30
R
F
= 750
R
F
= 1k
A
V
= 2
R
L
= 10
FEEDBACK RESISTANCE ( )
Bandwidth vs Supply Voltage
10k
Bandwidth and Feedback Resistance
vs Capacitive Load for Peaking ≤ 1dB
100
BANDWIDTH
–3dB BANDWIDTH (MHz)
R
F
= 560
R
F
= 750
1k
FEEDBACK RESISTANCE
A
V
= 2
R
L
=
∞
V
S
= ±15V
C
COMP
= 0.01µF
10
100
1000
CAPACITIVE LOAD (pF)
10
20
10
R
F
= 2k
1
10000
1210X G03
1210X G01
1210X G02
Bandwidth vs Supply Voltage
100
90
–3dB BANDWIDTH (MHz)
80
70
60
50
40
30
20
10
0
4
6
R
F
= 1.5k
14
12
10
8
SUPPLY VOLTAGE (±V)
16
18
0
R
F
=390
PEAKING ≤ 1dB
PEAKING ≤ 5dB
A
V
= 10
R
L
= 100
–3dB BANDWIDTH (MHz)
50
Bandwidth vs Supply Voltage
PEAKING ≤ 1dB
40
A
V
= 10
R
L
= 10
FEEDBACK RESISTANCE ( )
10k
Bandwidth and Feedback Resistance
vs Capacitive Load for Peaking ≤ 5dB
100
BANDWIDTH
–3dB BANDWIDTH (MHz)
R
F
= 330
R
F
= 470
R
F
= 680
30
R
F
= 680
R
F
= 560
R
F
= 1k
R
F
= 1.5k
1k
20
FEEDBACK
RESISTANCE
A
V
= +2
R
L
=
∞
V
S
= ±15V
C
COMP
= 0.01µF
1
10
100
1000
CAPACITIVE LOAD (pF)
10
10
4
6
14
12
10
8
SUPPLY VOLTAGE (±V)
16
18
0
100
1
10000
1210X G06
1210X G04
1210X G05
Differential Phase vs
Supply Voltage
0.6
0.5
0.4
0.3
0.2
0.1
0
R
F
= R
G
= 750
A
V
= 2
R
L
= 15
R
L
= 50
R
L
= 30
5
7
11
13
9
SUPPLY VOLTAGE (±V)
15
1210X G07
Differential Gain vs
Supply Voltage
0.5
R
L
= 10
0.4
DIFFERENTIAL GAIN (%)
R
L
= 10
SPOT NOISE (nV/√Hz OR pA/√Hz)
R
F
= R
G
= 750
A
V
= 2
100
Spot Noise Voltage and Current
vs Frequency
–i
n
DIFFERENTIAL PHASE (DEG)
0.3
R
L
= 15
10
0.2
e
n
+i
n
1
10
100
1k
10k
FREQUENCY (Hz)
100k
1210X G09
0.1
R
L
= 50
R
L
= 30
15
1210X G08
0
5
7
11
13
9
SUPPLY VOLTAGE (±V)
1210Xfa
For more information
www.linear.com/LT1210X
5
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