1
LT1361/LT1362
s
50MHz Gain Bandwidth
s
800V/
s Slew Rate
s
5mA Maximum Supply Current per Amplifier
s
Unity-Gain Stable
s
C-Load
TM
Op Amp Drives All Capacitive Loads
s
9nV/
Hz Input Noise Voltage
s
1mV Maximum Input Offset Voltage
s
1
A Maximum Input Bias Current
s
250nA Maximum Input Offset Current
s
13V Minimum Output Swing into 500
s
3.2V Minimum Output Swing into 150
s
4.5V/mV Minimum DC Gain, R
L
=1k
s
60ns Settling Time to 0.1%, 10V Step
s
0.2% Differential Gain, A
V
=2, R
L
=150
s
0.3
Differential Phase, A
V
=2, R
L
=150
s
Specified at
2.5V,
5V, and
15V
Dual and Quad
50MHz, 800V/
s Op Amps
The LT1361/LT1362 are dual and quad low power high
speed operational amplifiers with outstanding AC and DC
performance. The amplifiers feature much lower supply
current and higher slew rate than devices with comparable
bandwidth. The circuit topology is a voltage feedback
amplifier with matched high impedance inputs and the
slewing performance of a current feedback amplifier. The
high slew rate and single stage design provide excellent
settling characteristics which make the circuit an ideal
choice for data acquisition systems. Each output drives a
500
load to
13V with
15V supplies and a 150
load to
3.2V on
5V supplies. The amplifiers are stable with any
capacitive load making them useful in buffer or cable
driving applications.
The LT1361/LT1362 are members of a family of fast, high
performance amplifiers using this unique topology and
employing Linear Technology Corporation's advanced
bipolar complementary processing. For a single amplifier
version of the LT1361/LT1362 see the LT1360 data sheet.
For higher bandwidth devices with higher supply currents
see the LT1363 through LT1365 data sheets. For lower
supply current amplifiers see the LT1354 to LT1359 data
sheets. Singles, duals, and quads of each amplifier are
available.
s
Wideband Amplifiers
s
Buffers
s
Active Filters
s
Video and RF Amplification
s
Cable Drivers
s
Data Acquisition Systems
Cable Driver Frequency Response
1361/1362 TA02
A
V
= 1 Large-Signal Response
C-Load is a trademark of Linear Technology Corporation
FREQUENCY (MHz)
1
8
6
4
2
0
GAIN (dB)
2
100
1361/1362 TA01
10
V
S
=
10V
V
S
=
5V
V
S
=
2.5V
V
S
=
15V
+
1/2
LT1361
510
75
OUT
75
IN
510
APPLICATIO S
U
FEATURES
TYPICAL APPLICATIO
U
DESCRIPTIO
U
, LTC and LT are registered trademarks of Linear Technology Corporation.
2
LT1361/LT1362
SYMBOL
PARAMETER
CONDITIONS
V
SUPPLY
MIN
TYP
MAX
UNITS
V
OS
Input Offset Voltage
(Note 4)
15V
0.3
1.0
mV
5V
0.3
1.0
mV
2.5V
0.4
1.2
mV
I
OS
Input Offset Current
2.5V to
15V
80
250
nA
I
B
Input Bias Current
2.5V to
15V
0.3
1.0
A
e
n
Input Noise Voltage
f = 10kHz
2.5V to
15V
9
nV/
Hz
i
n
Input Noise Current
f = 10kHz
2.5V to
15V
0.9
pA/
Hz
R
IN
Input Resistance
V
CM
=
12V
15V
20
50
M
Input Resistance
Differential
15V
5
M
C
IN
Input Capacitance
15V
3
pF
Total Supply Voltage (V
+
to V
) ............................... 36V
Differential Input Voltage
(Transient Only) (Note 2)...................................
10V
Input Voltage ............................................................
V
S
Output Short-Circuit Duration (Note 3) ............ Indefinite
ABSOLUTE
M
AXI
M
U
M
RATINGS
W
W
W
U
Operating Temperature Range (Note 8) ...40
C to 85
C
Specified Temperature Range (Note 9) ....40
C to 85
C
Maximum Junction Temperature (See Below)
Plastic Package ................................................ 150
C
Storage Temperature Range ..................65
C to 150
C
Lead Temperature (Soldering, 10 sec).................. 300
C
PACKAGE/ORDER I
N
FOR
M
ATIO
N
W
U
U
ORDER PART
NUMBER
ORDER PART
NUMBER
T
JMAX
= 150
C,
JA
= 190
C/ W
T
JMAX
= 150
C,
JA
= 130
C/ W
LT1361CS8
S8 PART MARKING
1361
LT1361CN8
ORDER PART
NUMBER
ORDER PART
NUMBER
LT1362CS
LT1362CN
V
+
D
14
13
12
11
10
9
8
7
6
5
4
3
2
1
OUT A
IN A
+IN A
+IN B
IN B
OUT B
OUT C
V
IN D
OUT D
TOP VIEW
A
+IN D
+IN C
IN C
C
B
N PACKAGE
14-LEAD PDIP
V
+
D
16
15
14
13
12
11
10
7
6
5
4
3
2
1
OUT A
IN A
+IN A
+IN B
IN B
OUT B
OUT C
9
8
NC
NC
V
IN D
OUT D
TOP VIEW
A
+IN D
+IN C
IN C
C
B
S PACKAGE
16-LEAD PLASTIC SO
8
7
6
5
4
3
2
1
IN A
+IN A
V
+
TOP VIEW
S8 PACKAGE
8-LEAD PLASTIC SO
OUT A
OUT B
V
IN B
+IN B
A
B
8
7
6
5
4
3
2
1
IN A
+IN A
V
+
TOP VIEW
N8 PACKAGE
8-LEAD PDIP
OUT A
OUT B
V
IN B
+IN B
A
B
T
JMAX
= 150
C,
JA
= 150
C/ W
T
JMAX
= 150
C,
JA
= 110
C/ W
T
A
= 25
C, V
CM
= 0V unless otherwise noted.
ELECTRICAL CHARACTERISTICS
Consult factory for Industrial and Military grade parts.
(Note 1)
3
LT1361/LT1362
Input Voltage Range
+
15V
12.0
13.4
V
5V
2.5
3.4
V
2.5V
0.5
1.1
V
Input Voltage Range
15V
13.2
12.0
V
5V
3.2
2.5
V
2.5V
0.9
0.5
V
CMRR
Common Mode Rejection Ratio
V
CM
=
12V
15V
86
92
dB
V
CM
=
2.5V
5V
79
84
dB
V
CM
=
0.5V
2.5V
68
74
dB
PSRR
Power Supply Rejection Ratio
V
S
=
2.5V to
15V
93
105
dB
A
VOL
Large-Signal Voltage Gain
V
OUT
=
12V, R
L
= 1k
15V
4.5
9.0
V/mV
V
OUT
=
10V, R
L
= 500
15V
3.0
6.5
V/mV
V
OUT
=
2.5V, R
L
= 500
5V
3.0
6.4
V/mV
V
OUT
=
2.5V, R
L
= 150
5V
1.5
4.2
V/mV
V
OUT
=
1V, R
L
= 500
2.5V
2.5
5.2
V/mV
V
OUT
Output Swing
R
L
= 1k, V
IN
=
40mV
15V
13.5
13.9
V
R
L
= 500
, V
IN
=
40mV
15V
13.0
13.6
V
R
L
= 500
, V
IN
=
40mV
5V
3.5
4.0
V
R
L
= 150
, V
IN
=
40mV
5V
3.2
3.8
V
R
L
= 500
, V
IN
=
40mV
2.5V
1.3
1.7
V
I
OUT
Output Current
V
OUT
=
13V
15V
26
34
mA
V
OUT
=
3.2V
5V
21
29
mA
I
SC
Short-Circuit Current
V
OUT
= 0V, V
IN
=
3V
15V
40
54
mA
SR
Slew Rate
A
V
= 2, (Note 5)
15V
600
800
V/
s
5V
250
350
V/
s
Full Power Bandwidth
10V Peak, (Note 6)
15V
12.7
MHz
3V Peak, (Note 6)
5V
18.6
MHz
GBW
Gain Bandwidth
f = 200kHz
15V
35
50
MHz
5V
25
37
MHz
2.5V
32
MHz
t
r
, t
f
Rise Time, Fall Time
A
V
= 1, 10%-90%, 0.1V
15V
3.1
ns
5V
4.3
ns
Overshoot
A
V
= 1, 0.1V
15V
35
%
5V
27
%
Propagation Delay
50% V
IN
to 50% V
OUT
, 0.1V
15V
5.2
ns
5V
6.4
ns
t
s
Settling Time
10V Step, 0.1%, A
V
= 1
15V
60
ns
10V Step, 0.01%, A
V
= 1
15V
90
ns
5V Step, 0.1%, A
V
= 1
5V
65
ns
Differential Gain
f = 3.58MHz, A
V
= 2, R
L
= 150
15V
0.20
%
5V
0.20
%
f = 3.58MHz, A
V
= 2, R
L
= 1k
15V
0.04
%
5V
0.02
%
Differential Phase
f = 3.58MHz, A
V
= 2, R
L
= 150
15V
0.40
Deg
5V
0.30
Deg
f = 3.58MHz, A
V
= 2, R
L
= 1k
15V
0.07
Deg
5V
0.26
Deg
R
O
Output Resistance
A
V
= 1, f = 1MHz
15V
1.4
Channel Separation
V
OUT
=
10V, R
L
= 500
15V
100
113
dB
I
S
Supply Current
Each Amplifier
15V
4.0
5.0
mA
Each Amplifier
5V
3.8
4.8
mA
SYMBOL
PARAMETER
CONDITIONS
V
SUPPLY
MIN
TYP
MAX
UNITS
T
A
= 25
C, V
CM
= 0V unless otherwise noted.
ELECTRICAL CHARACTERISTICS
4
LT1361/LT1362
SYMBOL
PARAMETER
CONDITIONS
V
SUPPLY
MIN
TYP
MAX
UNITS
V
OS
Input Offset Voltage
(Note 4)
15V
q
1.5
mV
5V
q
1.5
mV
2.5V
q
1.7
mV
Input V
OS
Drift
(Note 7)
2.5V to
15V
q
9
12
V/
C
I
OS
Input Offset Current
2.5V to
15V
q
350
nA
I
B
Input Bias Current
2.5V to
15V
q
1.5
A
CMRR
Common Mode Rejection Ratio
V
CM
=
12V
15V
q
84
dB
V
CM
=
2.5V
5V
q
77
dB
V
CM
=
0.5V
2.5V
q
66
dB
PSRR
Power Supply Rejection Ratio
V
S
=
2.5V to
15V
q
91
dB
A
VOL
Large-Signal Voltage Gain
V
OUT
=
12V, R
L
= 1k
15V
q
3.6
V/mV
V
OUT
=
10V, R
L
= 500
15V
q
2.4
V/mV
V
OUT
=
2.5V, R
L
= 500
5V
q
2.4
V/mV
V
OUT
=
2.5V, R
L
= 150
5V
q
1.0
V/mV
V
OUT
=
1V, R
L
= 500
2.5V
q
2.0
V/mV
V
OUT
Output Swing
R
L
= 1k, V
IN
=
40mV
15V
q
13.4
V
R
L
= 500
, V
IN
=
40mV
15V
q
12.8
V
R
L
= 500
, V
IN
=
40mV
5V
q
3.4
V
R
L
= 150
, V
IN
=
40mV
5V
q
3.1
V
R
L
= 500
, V
IN
=
40mV
2.5V
q
1.2
V
I
OUT
Output Current
V
OUT
=
12.8V
15V
q
25
mA
V
OUT
=
3.1V
5V
q
20
mA
I
SC
Short-Circuit Current
V
OUT
= 0V, V
IN
=
3V
15V
q
32
mA
SR
Slew Rate
A
V
= 2, (Note 5)
15V
q
475
V/
s
5V
q
185
V/
s
GBW
Gain Bandwidth
f = 200kHz
15V
q
31
MHz
5V
q
22
MHz
Channel Separation
V
OUT
=
10V, R
L
= 500
15V
q
98
dB
I
S
Supply Current
Each Amplifier
15V
q
5.8
mA
Each Amplifier
5V
q
5.6
mA
ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
V
SUPPLY
MIN
TYP
MAX
UNITS
V
OS
Input Offset Voltage
(Note 4)
15V
q
2.0
mV
5V
q
2.0
mV
2.5V
q
2.2
mV
Input V
OS
Drift
(Note 7)
2.5V to
15V
q
9
12
V/
C
I
OS
Input Offset Current
2.5V to
15V
q
400
nA
I
B
Input Bias Current
2.5V to
15V
q
1.8
A
CMRR
Common Mode Rejection Ratio
V
CM
=
12V
15V
q
84
dB
V
CM
=
2.5V
5V
q
77
dB
V
CM
=
0.5V
2.5V
q
66
dB
PSRR
Power Supply Rejection Ratio
V
S
=
2.5V to
15V
q
90
dB
A
VOL
Large-Signal Voltage Gain
V
OUT
=
12V, R
L
= 1k
15V
q
2.5
V/mV
V
OUT
=
10V, R
L
= 500
15V
q
1.5
V/mV
V
OUT
=
2.5V, R
L
= 500
5V
q
1.5
V/mV
V
OUT
=
2.5V, R
L
= 150
5V
q
0.6
V/mV
V
OUT
=
1V, R
L
= 500
2.5V
q
1.3
V/mV
The
q
denotes the specifications which apply over the temperature range 40
C
T
A
85
C, V
CM
= 0V unless otherwise noted. (Note 9)
The
q
denotes the specifications which apply over the temperature range
0
C
T
A
70
C, V
CM
= 0V unless otherwise noted.
5
LT1361/LT1362
SYMBOL
PARAMETER
CONDITIONS
V
SUPPLY
MIN
TYP
MAX
UNITS
V
OUT
Output Swing
R
L
= 1k, V
IN
=
40mV
15V
q
13.4
V
R
L
= 500
, V
IN
=
40mV
15V
q
12.0
V
R
L
= 500
, V
IN
=
40mV
5V
q
3.4
V
R
L
= 150
, V
IN
=
40mV
5V
q
3.0
V
R
L
= 500
, V
IN
=
40mV
2.5V
q
1.2
V
I
OUT
Output Current
V
OUT
=
12.0V
15V
q
24
mA
V
OUT
=
3.0V
5V
q
20
mA
I
SC
Short-Circuit Current
V
OUT
= 0V, V
IN
=
3V
15V
q
30
mA
SR
Slew Rate
A
V
= 2, (Note 5)
15V
q
450
V/
s
5V
q
175
V/
s
GBW
Gain Bandwidth
f = 200kHz
15V
q
30
MHz
5V
q
20
MHz
Channel Separation
V
OUT
=
10V, R
L
= 500
15V
q
98
dB
I
S
Supply Current
Each Amplifier
15V
q
6.0
mA
Each Amplifier
5V
q
5.8
mA
TYPICAL PERFOR
M
A
N
CE CHARACTERISTICS
U
W
Input Common Mode Range vs
Supply Voltage
SUPPLY VOLTAGE (
V)
1
SUPPLY CURRENT (mA)
3
2
6
5
4
10
5
0
15
20
1361/1362 G01
55
C
25
C
125
C
Supply Current vs Supply Voltage
and Temperature
Input Bias Current vs
Input Common Mode Voltage
INPUT COMMON MODE VOLTAGE (V)
0
INPUT BIAS CURRENT (
A)
0.2
0.1
0.6
0.5
0.4
0.3
15
10
0
10
15
5
5
1361/1362 G03
V
S
=
15V
T
A
= 25
C
I
B
=
I
B
+ + I
B
--------
2
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: Differential inputs of
10V are appropriate for transient operation
only, such as during slewing. Large, sustained differential inputs will cause
excessive power dissipation and may damage the part. See Input
Considerations in the Applications Information section of this data sheet
for more details.
Note 3: A heat sink may be required to keep the junction temperature
below absolute maximum when the output is shorted indefinitely.
Note 4: Input offset voltage is pulse tested and is exclusive of warm-up drift.
Note 5: Slew rate is measured between
10V on the output with
6V input
for
15V supplies and
1V on the output with
1.75V input for
5V supplies.
Note 6: Full power bandwidth is calculated from the slew rate
measurement: FPBW = SR/2
V
P
.
Note 7: This parameter is not 100% tested.
Note 8: The LT1361C/LT1362C are guaranteed functional over the
operating temperature range of 40
C to 85
C.
Note 9: The LT1361C/LT1362C are guaranteed to meet specified
performance from 0
C to 70
C. The LT1361C/LT1362C 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. For
guaranteed I-grade parts, consult the factory.
SUPPLY VOLTAGE (
V)
V
COMMON MODE RANGE (V)
2.0
0.5
1.0
1.5
V
+
1.0
0.5
2.0
1.5
10
5
0
15
20
1361/1362 G02
T
A
= 25
C
V
OS
< 1mV
ELECTRICAL CHARACTERISTICS
The
q
denotes the specifications which apply over the temperature range
40
C
T
A
85
C, V
CM
= 0V unless otherwise noted. (Note 9)
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