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LM7372 High Speed, High Output Current, Dual Operational Amplifier
June 24, 2008
LM7372
High Speed, High Output Current, Dual Operational
Amplifier
General Description
The LM7372 is a high speed dual voltage feedback amplifier
that has the slewing characteristic of current feedback ampli-
fiers; yet it can be used in all traditional voltage feedback
amplifier configurations.
The LM7372 is stable for gains as low as +2 or −1. It provides
a very high slew rate at 3000V/µs and a wide gain bandwidth
product of 120MHz, while consuming only 6.5mA/per ampli-
fier of supply current. It is ideal for video and high speed signal
processing applications such as xDSL and pulse amplifiers.
With 150mA output current, the LM7372 can be used for video
distribution, as a transformer driver or as a laser diode driver.
Operation on ±15V power supplies allows for large signal
swings and provides greater dynamic range and signal-to-
noise ratio. The LM7372 offers high SFDR and low THD, ideal
for ADC/DAC systems. In addition, the LM7372 is specified
for ±5V operation for portable applications.
The LM7372 is built on National's Advance VIP
®
III (Vertically
integrated PNP) complementary bipolar process.
Features
■
■
■
■
■
■
■
■
−80dBc highest harmonic distortion @1MHz, 2V
PP
Very high slew rate: 3000V/µs
Wide gain bandwidth product: 120MHz
−3dB frequency @ A
V
= +2: 200MHz
Low supply current: 13mA (both amplifiers)
High open loop gain: 85dB
High output current: 150mA
Differential gain and phase: 0.01%, 0.02°
Applications
■
■
■
■
■
■
HDSL and ADSL Drivers
Multimedia broadcast systems
Professional video cameras
CATV/Fiber optics signal processing
Pulse amplifiers and peak detectors
HDTV amplifiers
Typical Application
20004903
FIGURE 1. Single Supply Application (16-Pin SOIC)
VIP
®
is a registered trademark of National Semiconductor Corporation.
© 2008 National Semiconductor Corporation
200049
www.national.com
LM7372
Connection Diagrams
16-Pin SOIC
8-Pin PSOP
20004902
* Heatsink Pins. See note 4
20004929
Top View
Top View
Note:
For PSOP and SOIC the exposed pad should be tied either to V
−
or left electrically floating.
(Die attach material is conductive and is internally tied to V
−
)
Ordering Information
Symbol
Temperature Range
−40°C to 85°C
16-Pin SOIC
8-Pin PSOP
LM7372IMA
LM7372IMAX
LM7372MR
LM7372MRX
LM7372IMA
LM7372MR
48 Units/Rail
2.5k Units Tape and Reel
95 Units/Rail
2.5k Units Tape and Reel
M16A
MRA08B
Package Marking
Transport Media
NSC Drawing
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2
LM7372
Absolute Maximum Ratings
(Notes 1, 3)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
ESD Tolerance
Input Voltage
Maximum Junction Temperature
(Note 4)
V
−
to V
+
150°C
(Note 1)
9V
≤
V
S
≤
36V
−40°C
≤
T
J
≤
85°C
106°C/W
70°C/W
47°C/W
Operating Ratings
Supply Voltage
Human Body Model
Machine Model
Suppy Voltage (V
+
−V
−
)
Differential Input Voltage (V
S
= ±15V)
Output Short Circuit to Ground
(Note 3)
Storage Temp. Range
Soldering Information
1.5kV (Note 2)
200V (Note 2)
36V
±10V
Continuous
−65°C to 150°C
235°C
260°C
Junction Temperature Range (T
J
)
LM7372
Thermal Resistance(θ
JA
)
16-Pin SOIC see (Note 4)
8-Pin PSOP (Note 4)
(see Application Information)
Infrared or Convection Reflow (20 sec.)
Wave Soldering Lead Temperature (10
sec.)
±15V DC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for T
J
= 25°C, V
CM
= 0V and R
L
= 1kΩ.
Boldface
apply at the temperature
extremes.
Symbol
V
OS
TC V
OS
I
B
I
OS
R
IN
R
O
CMRR
PSRR
V
CM
A
V
Parameter
Input Offset Voltage
Input Offset Voltage Average Drift
Input Bias Current
Input Offset Current
Input Resistance
Open Loop Output Resistance
Common Mode Rejection Ratio
Power Supply Rejection Ratio
Input Common-Mode Voltage Range
Large Signal Voltage Gain (Note 7)
V
CM
= ±10V
V
S
= ±15V to ±5V
CMRR > 60dB
R
L
= 1kΩ
R
L
= 100Ω
V
O
Output Swing
R
L
= 1kΩ
75
70
70
66
13
12.7
−13
−12.7
I
OUT
= − 150mA
I
OUT
= 150mA
I
SC
I
S
Output Short Circuit Current
Supply Current (both Amps)
Sourcing
Sinking
11.8
11.4
−11.2
−10.8
75
70
75
70
Common Mode
Differential Mode
Conditions
Min
(Note 6)
Typ
(Note 5)
2.0
12
2.7
0.1
40
3.3
15
93
90
±13
85
81
13.4
−13.3
12.4
−11.9
260
250
13
17
19
10
12
4.0
6.0
Max
(Note 6)
8.0
10.0
Units
mV
µV/°C
µA
µA
MΩ
MΩ
Ω
dB
dB
V
dB
dB
V
V
V
V
mA
mA
mA
3
www.national.com
LM7372
±15V AC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for T
J
= 25°C, V
CM
= 0V and R
L
= 1kΩ.
Boldface
apply at the temperature
extremes.
Symbol
SR
Parameter
Slew Rate (Note 8)
Unity Bandwidth Product
−3dB Frequency
φ
m
t
S
t
P
A
D
φ
D
hd2
Phase Margin
Settling Time (0.1%)
Propagation Delay
Differential Gain (Note 9)
Differential Phase (Note 9)
Second Harmonic Distortion
F
IN
= 1MHz, A
V
= +2
Third Harmonic Distortion
F
IN
= 1MHz, A
V
= +2
Intermodulation Distortion
V
OUT
= 2V
P-P
, R
L
= 100Ω
V
OUT
= 16.8V
P-P
, R
L
= 100Ω
V
OUT
= 2V
P-P
, R
L
= 100Ω
V
OUT
= 16.8V
P-P
, R
L
= 100Ω
Fin 1 = 75kHz,
Fin 2 = 85kHz
V
OUT
= 16.8V
P-P
, R
L
= 100Ω
f = 10kHz
f = 10kHz
A
V
= +2
A
VOL
= 6dB
A
V
= −1, A
O
= ±5V,
R
L
= 500Ω
A
V
= −2, V
IN
= ±5V,
R
L
= 500Ω
0.01
0.02
−80
−73
−91
−67
−87
%
deg
dBc
dBc
dBc
dBc
dBc
6.0
ns
Conditions
A
V
= +2, V
IN
13V
P-P
A
V
= +2, V
IN
10V
P-P
Min
(Note 6)
Typ
(Note 5)
3000
2000
120
220
70
50
MHz
MHz
deg
ns
Max
(Note 6)
Units
V/µs
hd3
IMD
e
n
i
n
Input-Referred Voltage Noise
Input-Referred Current Noise
14
1.5
nV/
pA/
±5V DC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for T
J
= 25°C, V
CM
= 0V and R
L
= 1kΩ.
Boldface
apply at the temperature
extremes.
Symbol
V
OS
TC V
OS
I
B
I
OS
R
IN
R
O
CMRR
PSRR
V
CM
A
V
Parameter
Input Offset Voltage
Input Offset Voltage Average Drift
Input Bias Current
Input Offset Current
Input Resistance
Open Loop Output Resistance
Common Mode Rejection Ratio
Power Supply Rejection Ratio
Input Common-Mode Voltage Range
Large Signal Voltage Gain (Note 7)
V
CM
= ±2.5V
V
S
= ±15V to ±5V
CMRR > 60dB
R
L
= 1kΩ
R
L
= 100Ω
70
65
64
60
70
65
75
70
Common Mode
Differential Mode
Conditions
Min
(Note 6)
Typ
(Note 5)
2.2
12
3.3
0.1
40
3.3
15
90
90
±3
78
72
10
12
4
6
Max
(Note 6)
8.0
10.0
Units
mV
µV/°C
µA
µA
MΩ
MΩ
Ω
dB
dB
V
dB
dB
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4
