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LM359 Dual, High Speed, Programmable, Current Mode (Norton) Amplifiers
February 1995
LM359 Dual, High Speed, Programmable,
Current Mode (Norton) Amplifiers
General Description
The LM359 consists of two current differencing (Norton) in-
put amplifiers. Design emphasis has been placed on obtain-
ing high frequency performance and providing user pro-
grammable amplifier operating characteristics. Each amplifi-
er is broadbanded to provide a high gain bandwidth product,
fast slew rate and stable operation for an inverting closed
loop gain of 10 or greater. Pins for additional external fre-
quency compensation are provided. The amplifiers are de-
signed to operate from a single supply and can accommo-
date input common-mode voltages greater than the supply.
Features
Y
User programmable gain bandwidth product, slew rate,
input bias current, output stage biasing current and total
device power dissipation
Y
High gain bandwidth product (I
SET
e
0.5 mA)
400 MHz for A
V
e
10 to 100
30 MHz for A
V
e
1
Y
High slew rate (I
SET
e
0.5 mA)
60 V/
m
s for A
V
e
10 to 100
30 V/
m
s for A
V
e
1
Y
Current differencing inputs allow high common-mode
input voltages
Y
Operates from a single 5V to 22V supply
Y
Large inverting amplifier output swing, 2 mV to
V
CC
b
2V
Y
Low spot noise, 6 nV/
Applications
Y
General purpose video amplifiers
Y
High frequency, high Q active filters
Y
Photo-diode amplifiers
Y
Wide frequency range waveform generation circuits
Y
All LM3900 AC applications work to much higher
frequencies
0
Hz, for f
l
1 kHz
Typical Application
Connection Diagram
Dual-In-Line Package
TL/H/7788±2
TL/H/7788±1
Top View
Order Number LM359J, LM359M or LM359N
See NS Package Number J14A, M14A or N14A
#
A
V
e
20 dB
#
b
3 dB bandwidth
e
2.5 Hz to 25 MHz
#
Differential phase error
k
1
§
at 3.58 MHz
#
Differential gain error
k
0.5% at 3.58 MHz
C
1995 National Semiconductor Corporation
TL/H/7788
RRD-B30M115/Printed in U. S. A.
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
Supply Voltage
Input Currents, I
IN
(
a
)orI
IN
(
b
)
10 mA
DC
Set Currents, I
SET(IN)
or I
SET(OUT)
2mA
DC
22 V
DC
or
g
11 V
DC
Operating Temperature Range
LM359
0
§
Cto
a
70
§
C
Storage Temperature Range
b
65
§
Cto
a
150
§
C
Power Dissipation (Note 1)
J Package
1W
Lead Temperature (Soldering, 10 sec.)
260
§
C
N Package
750 mW
Soldering Information
Dual-In-Line Package
Soldering (10 sec.)
Maximum T
J
J Package
a
150
§
C
260
§
C
Small Outline Package
Vapor Phase (60 sec.) 215
§
C
Infrared (15 sec.) 220
§
C
See AN-450 ``Surface Mounting Methods and Their Effect
on Product Reliability'' for other methods of soldering sur-
face mount devices.
ESD rating to be determined.
N Package
a
125
§
C
Thermal Resistance
J Package
i
jA
147
§
C/W still air
110
§
C/W with 400 linear feet/min air flow
N Package
i
jA
100
§
C/W still air
75
§
C/W with 400 linear feet/min air flow
Electrical Characteristics
I
SET(IN)
e
I
SET(OUT)
e
0.5 mA, V
supply
e
12V, T
A
e
25
§
C unless otherwise noted
Parameter
Conditions
LM359
Units
Min
Typ Max
Open Loop Voltage
V
supply
e
12V, R
L
e
1k, f
e
100 Hz
62
72
dB
Gain
T
A
e
125
§
C
68
dB
Bandwidth
R
IN
e
1k
X
,C
comp
e
10 pF
15
30
MHz
Unity Gain
Gain Bandwidth Product
R
IN
e
50
X
to 200
X
200
400
MHz
Gain of 10 to 100
Slew Rate
Unity Gain
R
IN
e
1k
X
,C
comp
e
10 pF
30
V/
m
s
Gain of 10 to 100
R
IN
k
200
X
60
V/
m
s
Amplifier to Amplifier
f
e
100 Hz to 100 kHz, R
L
e
1k
b
80
dB
Coupling
Mirror Gain
at 2 mA I
IN
(
a
), I
SET
e
5
m
A, T
A
e
25
§
C
0.9
1.0
1.1
m
A/
m
A
(Note 2)
at 0.2 mA I
IN
(
a
), I
SET
e
5
m
A
0.9
1.0
1.1
m
A/
m
A
Over Temp.
at 20
m
AI
IN
(
a
), I
SET
e
5
m
A
Over Temp.
0.9
1.0
1.1
m
A/
m
A
D
Mirror Gain
at 20
m
A to 0.2 mA I
IN
(
a
)
3
5
%
(Note 2)
Over Temp, I
SET
e
5
m
A
Input Bias Current
Inverting Input, T
A
e
25
§
C
8
15
m
A
Over Temp.
30
m
A
Input Resistance (
b
re)
Inverting Input
2.5
k
X
Output Resistance
I
OUT
e
15 mA rms, f
e
1 MHz
3.5
X
Output Voltage Swing
R
L
e
600
X
V
OUT
High
I
IN
(
b
) and I
IN
(
a
) Grounded
9.5
10.3
V
V
OUT
Low
I
IN
(
b
)
e
100
m
A, I
IN
(
a
)
e
0
2
50
mV
Output Currents
Source
I
IN
(
b
) and I
IN
(
a
) Grounded, R
L
e
100
X
16
40
mA
Sink (Linear Region)
V
comp
b
0.5V
e
V
OUT
e
1V, I
IN
(
a
)
e
0
4.7
mA
Sink (Overdriven)
I
IN
(
b
)
e
100
m
A, I
IN
(
a
)
e
0,
V
OUT
Force
e
1V
1.5
3
mA
Supply Current
Non-Inverting Input
18.5
22
mA
Grounded, R
L
e
%
Power Supply Rejection
f
e
120 Hz, I
IN
(
a
) Grounded
40
50
dB
(Note 3)
Note 1: See Maximum Power Dissipation graph.
Note 2: Mirror gain is the current gain of the current mirror which is used as the non-inverting input.
#
A
I
e
I
IN
(
b
)
I
IN
(
a
)
J
D
Mirror Gain is the % change in A
I
for two
different mirror currents at any given temperature.
Note 3: See Supply Rejection graphs.
2
Schematic Diagram
3
Typical Performance Characteristics
Open Loop Gain
Open Loop Gain
Open Loop Gain
Note: Shaded area refers to LM359
Gain and Phase
Gain Bandwidth Product
Slew Rate
Feedback Gain
eb
100
Inverting Input Bias Current
Inverting Input Bias Current
Mirror Gain
Note: Shaded area refers to LM359
Mirror Gain
Mirror Gain
Mirror Current
TL/H/7788±4
Note: Shaded area refers to LM359
Note: Shaded area refers to LM359
4
Typical Performance Characteristics
(Continued)
Supply Current
Supply Rejection
Supply Rejection
Output Sink Current
Output Swing
Output Impedance
Amplifier to Amplifier
Coupling (Input Referred)
Noise Voltage
Maximum Power Dissipation
Note: Shaded area refers to LM359J/LM359N
TL/H/7788±5
Application Hints
The LM359 consists of two wide bandwidth, decompensat-
ed current differencing (Norton) amplifiers. Although similar
in operation to the original LM3900, design emphasis for
these amplifiers has been placed on obtaining much higher
frequency performance as illustrated in Figure1.
This significant improvement in frequency response is the
result of using a common-emitter/common-base (cascode)
gain stage which is typical in many discrete and integrated
video and RF circuit designs. Another versatile aspect of
these amplifiers is the ability to externally program many
internal amplifier parameters to suit the requirements of a
wide variety of applications in which this type of amplifier
can be used.
TL/H/7788±6
FIGURE 1
5
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