lm7372mrx National Semiconductor Corporation, lm7372mrx Datasheet

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lm7372mrx

Manufacturer Part Number
lm7372mrx
Description
High Speed, High Output Current, Dual Operational Amplifier
Manufacturer
National Semiconductor Corporation
Datasheet
© 2005 National Semiconductor Corporation
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 am-
plifiers; 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 amplifier 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
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
The LM7372 is built on National’s Advance VIP
cally integrated PNP) complementary bipolar process.
Typical Application
±
±
5V operation for portable applications.
15V power supplies allows for large signal
FIGURE 1. Single Supply Application (SOIC-16)
DS200049
III (Verti-
Features
n −80dBc highest harmonic distortion
n Very high slew rate: 3000V/µs
n Wide gain bandwidth product: 120MHz
n −3dB frequency
n Low supply current: 13mA (both amplifiers)
n High open loop gain: 85dB
n High output current: 150mA
n Differential gain and phase: 0.01%, 0.02˚
Applications
n HDSL and ADSL Drivers
n Multimedia broadcast systems
n Professional video cameras
n CATV/Fiber optics signal processing
n Pulse amplifiers and peak detectors
n HDTV amplifiers
@
A
V
= +2: 200MHz
20004903
@
1MHz, 2V
November 2005
www.national.com
PP

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lm7372mrx Summary of contents

Page 1

... The LM7372 is built on National’s Advance VIP cally integrated PNP) complementary bipolar process. Typical Application FIGURE 1. Single Supply Application (SOIC-16) © 2005 National Semiconductor Corporation Features n −80dBc highest harmonic distortion n Very high slew rate: 3000V/µs n Wide gain bandwidth product: 120MHz n − ...

Page 2

... Top View Ordering Information Symbol Temperature Range −40˚C to +85˚C LM7372IMA 16-Pin SOIC LM7372IMAX LM7372ILD 8-Pin LLP LM7372ILDX LM7372MR 8-Pin PSOP LM7372MRX www.national.com 8-Contact LLP 20004902 20004929 − or left Package Markiing Transport Media LM7372IMA LM7372IMA 2.5k Units Tape and Reel L7372 ...

Page 3

Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. ESD Tolerance Human Body Model Machine Model + − Suppy Voltage (V −V ) ± Differential Input Voltage (V ...

Page 4

AC Electrical Characteristics Unless otherwise specified, all limits guaranteed for T extremes. Symbol Parameter SR Slew Rate (Note 8) Unity Bandwidth Product −3dB Frequency φ Phase Margin m t Settling Time (0.1 Propagation Delay P A ...

Page 5

DC Electrical Characteristics Unless otherwise specified, all limits guaranteed for T extremes. Symbol Parameter V Output Swing O I Output Short Circuit Current SC I Supply Current (both Amps) S ± Electrical Characteristics Unless otherwise specified, ...

Page 6

Typical Performance Characteristics Harmonic Distortion vs. Frequency Harmonic Distortion vs. Frequency Harmonic Distortion vs. Output Level www.national.com Harmonic Distortion vs. Frequency 20004904 Harmonic Distortion vs. Frequency 20004906 Harmonic Distortion vs. Output Level 20004908 6 20004905 20004907 20004909 ...

Page 7

Typical Performance Characteristics Harmonic Distortion vs. Output Level Harmonic Distortion vs. Load Resistance Harmonic Distortion vs. Load Resistance (Continued) Harmonic Distortion vs. Output Level 20004910 Harmonic Distortion vs. Load Resistance 20004912 Harmonic Distortion vs. Load Resistance 20004914 7 20004911 20004913 ...

Page 8

Typical Performance Characteristics Frequency Response Frequency Response Large Signal Pulse Response www.national.com (Continued) Frequency Response 20004916 Small Signal Pulse Response 20004918 Thermal Performance of 8ld-LLP 20004921 8 20004917 20004920 20004922 ...

Page 9

Typical Performance Characteristics Harmonic Distortion vs. Frequency Output Voltage vs. Output Current (Continued) Input Bias Current (µA) vs. Temperature 20004927 20004924 9 20004923 www.national.com ...

Page 10

Simplified Schematic Diagram Application Notes The LM7372 is a high speed dual operational amplifier with a very high slew rate and very low distortion, yet like many other op amps used in conventional voltage feedback amplifier applications. Also, ...

Page 11

Application Notes (Continued) For each amplifier then, with an effective load each sine wave source, integration over the half cycle with a supply voltage V and a load voltage V S power dissipation ...

Page 12

Application Notes (Continued) tance of these packages below 100˚C/W by these methods and several manufacturers, including National, offer pack- age modifications to enhance the thermal characteristics. Improved removal of internal heat can be achieved by di- rectly connecting bond wires ...

Page 13

Application Notes (Continued) Although this application shows a single supply, conversion to a split supply is straightforward. The half supply resistive divider network is eliminated and the bias resistors at the non-inverting inputs are returned to ground, see Figure 3 ...

Page 14

Physical Dimensions unless otherwise noted www.national.com inches (millimeters) 16-Pin SOIC NS Package Number M16A 8-Pin LLP NS Package Number LDC08A 14 ...

Page 15

Physical Dimensions inches (millimeters) unless otherwise noted (Continued) National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry ...

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