LM6161/LM6261/LM6361
High Speed Operational Amplifier
General Description
The LM6161 family of high-speed amplifiers exhibits an ex-
cellent speed-power product in delivering 300 V/s and
50 MHz unity gain stability with only 5 mA of supply current.
Further power savings and application convenience are pos-
sible by taking advantage of the wide dynamic range in oper-
ating supply voltage which extends all the way down to +5V.
These amplifiers are built with National's VIP
TM
(Vertically In-
tegrated PNP) process which provides fast PNP transistors
that are true complements to the already fast NPN devices.
This advanced junction-isolated process delivers high speed
performance without the need for complex and expensive di-
electric isolation.
Features
n
High slew rate
300 V/s
n
High unity gain freq
50 MHz
n
Low supply current
5 mA
n
Fast settling
120 ns to 0.1%
n
Low differential gain
<
0.1%
n
Low differential phase
0.1
n
Wide supply range
4.75V to 32V
n
Stable with unlimited capacitive load
n
Well behaved; easy to apply
Applications
n
Video amplifier
n
High-frequency filter
n
Wide-bandwidth signal conditioning
n
Radar
n
Sonar
Connection Diagrams
Temperature Range
Package
NSC
Drawing
Military
Industrial
Commercial
-55C
T
A
+125C
-25C
T
A
+85C
0C
T
A
+70C
LM6261N
LM6361N
8-Pin
N08E
Molded DIP
LM6161J/883
LM6361J
8-Pin
J08A
5962-8962101PA
Ceramic DIP
LM6261M
LM6361M
8-Pin Molded
M08A
Surface Mt.
LM6161WG/883
10-Lead
WG10A
5962-8962101XA
Ceramic SOIC
LM6161W/883
10-Pin
W10A
5962-8962101HA
Ceramic Flatpak
VIP
TM
is a trademark of National Semiconductor Corporation.
10Lead Flatpak
DS009057-13
See NS Package Number W10A
DS009057-5
See NS Package Number J08A,
N08E or M08A
May 1999
LM6161/LM6261/LM6361
High
Speed
Operational
Amplifier
1999 National Semiconductor Corporation
DS009057
www.national.com
Absolute Maximum Ratings
(Note 12)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage (V
+
- V
-
)
36V
Differential Input Voltage
(Note 8)
8V
Common-Mode Voltage Range
(Note 10)
(V
+
- 0.7V) to (V
-
+ 0.7V)
Output Short Circuit to GND
(Note 1)
Continuous
Soldering Information
Dual-In-Line Package (N, J)
Soldering (10 sec.)
260C
Small Outline Package (M)
Vapor Phase (60 sec.)
Infrared (15 sec.)
215C
220C
See AN-450 "Surface Mounting Methods and Their Effect
on Product Reliability" for other methods of soldering
surface mount devices.
Storage Temp Range
-65C to +150C
Max Junction Temperature
150C
ESD Tolerance (Notes 6, 7)
700V
Operating Ratings
(Note 12)
Temperature Range (Note 2)
LM6161
-55C
T
J
+125C
LM6261
-25C
T
J
+85C
LM6361
0C
T
J
+70C
Supply Voltage Range
4.75V to 32V
DC Electrical Characteristics
The following specifications apply for Supply Voltage =
15V, V
CM
= 0, R
L
100 k
and R
S
= 50
unless otherwise noted.
Boldface limits apply for T
J
= T
MIN
to T
MAX
; all other limits T
J
= 25C.
Symbol
Parameter
Conditions
Typ
LM6161
LM6261
LM6361
Units
Limit
Limit
Limit
(Notes 3, 11)
(Note 3)
(Note 3)
V
OS
Input Offset Voltage
5
7
7
20
mV
10
9
22
Max
V
OS
Input Offset Voltage
10
V/C
Drift
Average Drift
I
b
Input Bias Current
2
3
3
5
A
6
5
6
Max
I
OS
Input Offset Current
150
350
350
1500
nA
800
600
1900
Max
I
OS
Input Offset Current
0.4
nA/C
Drift
Average Drift
R
IN
Input Resistance
Differential
325
k
C
IN
Input Capacitance
A
V
= +1
@
10 MHz
1.5
pF
A
VOL
Large Signal
V
OUT
=
10V,
750
550
550
400
V/V
Voltage Gain
R
L
= 2 k
(Note 9)
300
400
350
Min
R
L
= 10 k
(Note 9)
2900
V/V
V
CM
Input Common-Mode
Supply =
15V
+14.0
+13.9
+13.9
+13.8
Volts
Voltage Range
+13.8
+13.8
+13.7
Min
-13.2
-12.9
-12.9
-12.8
Volts
-12.7
-12.7
-12.7
Min
Supply = +5V
4.0
3.9
3.9
3.8
Volts
(Note 4)
3.8
3.8
3.7
Min
1.8
2.0
2.0
2.1
Volts
2.2
2.2
2.2
Max
CMRR
Common-Mode
-10V
V
CM
+10V
94
80
80
72
dB
Rejection Ratio
74
76
70
Min
PSRR
Power Supply
10V
V
16V
90
80
80
72
dB
Rejection Ratio
74
76
70
Min
www.national.com
2
DC Electrical Characteristics
(Continued)
The following specifications apply for Supply Voltage =
15V, V
CM
= 0, R
L
100 k
and R
S
= 50
unless otherwise noted.
Boldface limits apply for T
J
= T
MIN
to T
MAX
; all other limits T
J
= 25C.
Symbol
Parameter
Conditions
Typ
LM6161
LM6261
LM6361
Units
Limit
Limit
Limit
(Notes 3, 11)
(Note 3)
(Note 3)
V
O
Output Voltage
Supply =
15V
+14.2
+13.5
+13.5
+13.4
Volts
Swing
and R
L
= 2 k
+13.3
+13.3
+13.3
Min
-13.4
-13.0
-13.0
-12.9
Volts
-12.7
-12.8
-12.8
Min
Supply = +5V
4.2
3.5
3.5
3.4
Volts
and R
L
= 2 k
3.3
3.3
3.3
Min
(Note 4)
1.3
1.7
1.7
1.8
Volts
2.0
1.9
1.9
Max
Output Short
Source
65
30
30
30
mA
Circuit Current
20
25
25
Min
Sink
65
30
30
30
mA
20
25
25
Min
I
S
Supply Current
5.0
6.5
6.5
6.8
mA
6.8
6.7
6.9
Max
AC Electrical Characteristics
The following specifications apply for Supply Voltage =
15V, V
CM
= 0, R
L
100 k
and R
S
= 50
unless otherwise noted.
Boldface limits apply for T
J
= T
MIN
to T
MAX
; all other limits T
J
= 25C.
LM6161
LM6261
LM6361
Symbol
Parameter
Conditions
Typ
Limit
Limit
Limit
Units
(Notes 3, 11)
(Note 3)
(Note 3)
GBW
Gain-Bandwidth
@
f = 20 MHz
50
40
40
35
MHz
Product
30
35
32
Min
Supply =
5V
35
MHz
SR
Slew Rate
A
V
= +1 (Note 8)
300
200
200
200
V/s
180
180
180
Min
Supply =
5V (Note 8)
200
V/s
PBW
Power Bandwidth
V
OUT
= 20 V
PP
4.5
MHz
t
S
Settling Time
10V Step to 0.1%
120
ns
A
V
= -1, R
L
= 2 k
m
Phase Margin
45
Deg
A
D
Differential Gain
NTSC, A
V
= +4
<
0.1
%
D
Differential Phase
NTSC, A
V
= +4
0.1
Deg
e
np-p
Input Noise Voltage
f = 10 kHz
15
i
np-p
Input Noise Current
f = 10 kHz
1.5
Note 1: Continuous short-circuit operation at elevated ambient temperature can result in exceeding the maximum allowed junction temperature of 150C.
Note 2: The typical junction-to-ambient thermal resistance of the molded plastic DIP (N) is 105C/W, the molded plastic SO (M) package is 155C/W, and the cerdip
(J) package is 125C/W. All numbers apply for packages soldered directly into a printed circuit board.
Note 3: Limits are guaranteed by testing or correlation.
Note 4: For single supply operation, the following conditions apply: V
+
= 5V, V
-
= 0V, V
CM
= 2.5V, V
OUT
= 2.5V. Pin 1 & Pin 8 (Vos Adjust) are each connected to
Pin 4 (V
-
) to realize maximum output swing. This connection will degrade V
OS
, V
OS
Drift, and Input Voltage Noise.
Note 5: C
L
5 pF.
Note 6: In order to achieve optimum AC performance, the input stage was designed without protective clamps. Exceeding the maximum differential input voltage re-
sults in reverse breakdown of the base-emitter junction of one of the input transistors and probable degradation of the input parameters (especially Vos, Ios, and
Noise).
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3
AC Electrical Characteristics
(Continued)
Note 7: The average voltage that the weakest pin combinations (those involving Pin 2 or Pin 3) can withstand and still conform to the datasheet limits. The test circuit
used consists of the human body model of 100 pF in series with 1500
.
Note 8: V
IN
= 8V step. For supply =
5V, V
IN
= 5V step.
Note 9: Voltage Gain is the total output swing (20V) divided by the input signal required to produce that swing.
Note 10: The voltage between V
+
and either input pin must not exceed 36V.
Note 11: A military RETS electrical test specification is available on request. At the time of printing, the RETS6161X specs complied with all Boldface limits in this
column.
Note 12: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
intended to be functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics. The
guaranteed specifications apply only for the test conditions listed.
Typical Performance Characteristics
(R
L
= 10 k
, T
A
= 25C unless otherwise specified)
Supply Current vs
Supply Voltage
DS009057-15
Common-Mode
Rejection Ratio
DS009057-16
Power Supply
Rejection Ratio
DS009057-17
Gain-Bandwidth
Product
DS009057-18
Propagation Delay
Rise and Fall Times
DS009057-19
Gain-Bandwidth Product
vs Load Capacitance
DS009057-20
Slew Rate vs
Load Capacitance
DS009057-21
Overshoot vs
Capacitive Load
DS009057-22
Slew Rate
DS009057-23
www.national.com
4
Typical Performance Characteristics
(R
L
= 10 k
, T
A
= 25C unless otherwise
specified) (Continued)
Note 13: Differential gain and differential phase measured for four series LM6361 op amps configured as unity-gain followers, in series with an LM6321 buffer. Error
added by LM6321 is negligible. Test performed using Tektronix Type 520 NTSC test system.
Voltage Gain
vs Load Resistance
DS009057-24
Gain vs Supply Voltage
DS009057-25
Differential Gain (Note 13)
DS009057-7
Differential Phase (Note 13)
DS009057-8
Step Response; Av = +1
(50 ns/div)
Input (2v/div) Output (2v/div)
DS009057-1
www.national.com
5
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