Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLinear ICsLinear IC - Op-amp Voltage feedback SO 8

+ V

1:1

Twisted

Pair Line

100

1/2

LM7372

20uF

0.1uF

1/2

LM7372

0.1uF

5.1k

10.2k

47uF

0.1uF

- V

LM7372

www.ti.com

SNOS926E –MAY 1999–REVISED MARCH 2013

LM7372 High Speed, High Output Current, Dual Operational Amplifier

Check for Samples: LM7372

FEATURES

DESCRIPTION

The LM7372 is a high speed dual voltage feedback

• −80dBc Highest Harmonic Distortion @1MHz,

amplifier that has the slewing characteristic of current

feedback amplifiers; yet it can be used in all

• Very High Slew Rate: 3000V/µs

traditional voltage feedback amplifier configurations.

• Wide Gain Bandwidth Product: 120MHz

The LM7372 is stable for gains as low as +2 or −1. It

• −3dB Frequency @ A

= +2: 200MHz

provides a very high slew rate at 3000V/µs and a

wide gain bandwidth product of 120MHz, while

• Low Supply Current: 13mA (both amplifiers)

consuming only 6.5mA/per amplifier of supply current.

• High Open Loop Gain: 85dB

It is ideal for video and high speed signal processing

• High Output Current: 150mA

applications such as xDSL and pulse amplifiers. With

• Differential Gain and Phase: 0.01%, 0.02°

150mA output current, the LM7372 can be used for

video distribution, as a transformer driver or as a

laser diode driver.

APPLICATIONS

Operation on ±15V power supplies allows for large

• HDSL and ADSL Drivers

signal swings and provides greater dynamic range

• Multimedia Broadcast Systems

and signal-to-noise ratio. The LM7372 offers high

• Professional Video Cameras

SFDR and low THD, ideal for ADC/DAC systems. In

• CATV/Fiber Optics Signal Processing addition, the LM7372 is specified for ±5V operation

for portable applications.

• Pulse Amplifiers and Peak Detectors

The LM7372 is built on TI's Advance VIP™ III

• HDTV Amplifiers

(Vertically integrated PNP) complementary bipolar

process.

Typical Application

Figure 1. Single Supply Application (16-Pin SOIC)

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2VIP is a trademark of Texas Instruments.

3All other trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

Summary of content (26 pages)

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LM7372 www.ti.com SNOS926E – MAY 1999 – REVISED MARCH 2013 LM7372 High Speed, High Output Current, Dual Operational Amplifier Check for Samples: LM7372 FEATURES DESCRIPTION 1 • 23 • • • • • • • The LM7372 is a high speed dual voltage feedback amplifier that has the slewing characteristic of current feedback amplifiers; yet it can be used in all traditional voltage feedback amplifier configurations.
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LM7372 SNOS926E – MAY 1999 – REVISED MARCH 2013 www.ti.com Connection Diagrams * 1 16 NC 2 15 NC OUT A 3 14 V+ A - + -IN 4 13 OUT B 12 -IN 5 +IN * B V- 6 * Heatsink Pins. 11 +IN - + NC 7 10 NC * 8 9 * (1) Figure 2. 16-Pin SOIC, Top View 1 8 OUT A + V A 2 - + 7 -IN A +IN A 3 6 B + - V 4 OUT B -IN B 5 +IN B Figure 3. 8-Pin SO PowerPAD, Top View NOTE For SO PowerPAD package the exposed pad should be tied either to V− or left electrically floating.
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LM7372 www.ti.com SNOS926E – MAY 1999 – REVISED MARCH 2013 Absolute Maximum Ratings (1) (2) (3) ESD Tolerance + Human Body Model 1.5kV (4) Machine Model 200V (4) − Suppy Voltage (V −V ) 36V Differential Input Voltage (VS = ±15V) ±10V Output Short Circuit to Ground (2) Continuous −65°C to 150°C Storage Temp. Range Soldering Information Infrared or Convection Reflow (20 sec.) 235°C Wave Soldering Lead Temperature (10 sec.
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LM7372 SNOS926E – MAY 1999 – REVISED MARCH 2013 www.ti.com ±15V DC Electrical Characteristics Unless otherwise specified, all limits ensured for TJ = 25°C, VCM = 0V and RL = 1kΩ. Boldface apply at the temperature extremes. Symbol Parameter Conditions Min (1) Typ (2) Max (1) Units 2.0 8.0 10.0 mV VOS Input Offset Voltage TC VOS Input Offset Voltage Average Drift 12 IB Input Bias Current 2.7 10 12 µA IOS Input Offset Current 0.1 4.0 6.
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LM7372 www.ti.com SNOS926E – MAY 1999 – REVISED MARCH 2013 ±15V AC Electrical Characteristics Unless otherwise specified, all limits ensured for TJ = 25°C, VCM = 0V and RL = 1kΩ. Boldface apply at the temperature extremes. Symbol SR Parameter Slew Rate (3) Conditions Min (1) Typ (2) AV = +2, VIN 13VP-P 3000 AV = +2, VIN 10VP-P 2000 Unity Bandwidth Product Max (1) Units V/µs 120 MHz −3dB Frequency AV = +2 220 MHz φm Phase Margin AVOL = 6dB 70 deg tS Settling Time (0.
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LM7372 SNOS926E – MAY 1999 – REVISED MARCH 2013 www.ti.com ±5V DC Electrical Characteristics (continued) Unless otherwise specified, all limits ensured for TJ = 25°C, VCM = 0V and RL = 1kΩ. Boldface apply at the temperature extremes. Symbol AV Large Signal Voltage Gain VO Output Short Circuit Current IS (3) (3) Output Swing ISC Min (1) Typ (2) RL = 1kΩ 70 65 78 dB RL = 100Ω 64 60 72 dB RL = 1kΩ 3.2 3.0 3.4 V −3.2 −3.0 −3.4 V IOUT = − 80mA 2.5 2.2 2.8 V IOUT = 80mA −2.5 −2.
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LM7372 www.ti.com SNOS926E – MAY 1999 – REVISED MARCH 2013 Typical Performance Characteristics Harmonic Distortion vs Frequency Harmonic Distortion vs Frequency -30 -50 VS = ±12V AV = 2 HARMONIC DISTORTION (dBc) HARMONIC DISTORTION (dBc) VS = ±12V VO = 2VP-P -70 HD2 RL = 100 HD3 -90 -110 AV = 2 -50 RL = 100 HD2 -70 -90 -110 1M 100k 1M 100k 10M Figure 4. Figure 5.
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LM7372 SNOS926E – MAY 1999 – REVISED MARCH 2013 www.ti.com Typical Performance Characteristics (continued) Harmonic Distortion vs Output Level Harmonic Distortion vs Output Level -50 VS = ±12V VS = ±12V AV = 2 AV = 2 RL = 100 f = 100kHZ -80 DISTORTION (dBc) DISTORTION (dBc) -60 HD2 -100 RL = 100 f = 1MHZ -70 HD2 -90 HD3 HD3 -120 -110 1 10 1 20 OUTPUT VOLTAGE (VP-P) 10 OUTPUT VOLTAGE (VP-P) Figure 10. Figure 11.
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LM7372 www.ti.com SNOS926E – MAY 1999 – REVISED MARCH 2013 Typical Performance Characteristics (continued) Frequency Response Frequency Response 2 2 VS = ±12V 1 1 RL = 100 GAIN = +2 -1 0 NORMALIZED GAIN (dB) NORMALIZED GAIN (dB) 0 -2 GAIN = +8 -3 -4 -1 GAIN = +2 -2 GAIN = +8 -3 -4 -5 -5 -6 -6 VS = ±15V RL = 100 1 10 100 1 1000 10 FREQUENCY (MHz) 100 1000 FREQUENCY (MHz) Figure 16. Figure 17.
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LM7372 SNOS926E – MAY 1999 – REVISED MARCH 2013 www.ti.com Typical Performance Characteristics (continued) Harmonic Distortion vs Frequency Input Bias Current (µA) vs Temperature -50 3 VS = ±5V VS = ±15V 2.5 VO = 2VP-P -70 INPUT BIAS CURRENT (µA) HARMONIC DISTORTION (dBc) AV = 2 RL = 100 HD2 -90 HD3 2 1.5 1 0.5 0 -40 -110 100k 1M 10M 25 85 125 TEMPERATURE (°C) FREQUENCY (Hz) Figure 22. Figure 23.
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LM7372 www.ti.com SNOS926E – MAY 1999 – REVISED MARCH 2013 Typical Performance Characteristics (continued) M1 Q1 Q4 RE IN - V - IN + OUTPUT BUFFER + A V Q3 Q2 M2 Figure 25.
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LM7372 SNOS926E – MAY 1999 – REVISED MARCH 2013 www.ti.com APPLICATION INFORMATION 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, it is used in conventional voltage feedback amplifier applications.
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LM7372 www.ti.com SNOS926E – MAY 1999 – REVISED MARCH 2013 For the package, the power dissipation will be doubled since there are two amplifiers in the package, each contributing half the swing across the load. The circuit in Figure 1 is using the LM7372 as the upstream driver in an ADSL application with Discrete MultiTone modulation. With DMT the upstream signal is spread into 32 adjacent channels each 4kHz wide.
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LM7372 SNOS926E – MAY 1999 – REVISED MARCH 2013 www.ti.com The required signal swing can be reduced by using a step-up transformer to drive the line. For example a 1:2 ratio will reduce the peak swing requirement by half, and this would allow the supply to be reduced by a corresponding amount. This is not recommended for the LM7372 in this particular application for two reasons.
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LM7372 www.ti.com SNOS926E – MAY 1999 – REVISED MARCH 2013 From Table 1 it is apparent that two areas of 1oz copper at each end of the package, each 2 in2 in area (for a total of 2600mm2) will be sufficient to hold the maximum junction temperature under 120°C with an 85°C ambient temperature. An even better package for removing internally generated heat is a package with an exposed die attach paddle.
PAGE 16
LM7372 SNOS926E – MAY 1999 – REVISED MARCH 2013 www.ti.com 1000 10V supply (1 amplifier) 10V supply (2 amplifiers) TJ = 140°C 100 30V supply (1 amplifier) 10 30V supply 10 V 6V PP PP (2 amplifiers) PP PP 2V 3V PP PP V 1V 1 15 20 V PP 24 V PP IS INCREASE (mA) 8-Pin SO PowerPAD qJA = 47°C/W TA = 85°C 1 10 100 FREQUENCY (MHz) Figure 27.
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LM7372 www.ti.
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LM7372 SNOS926E – MAY 1999 – REVISED MARCH 2013 www.ti.com V+ + 0.1uF 3 + VIN 20uF + 1/2 LM7372 - 2 5.1k 0.1uF 8 1 50 1:1 2k Twisted Pair Line 2k 100 2k 50 6 1/2 LM7372 0.1uF 5 - VIN + 7 4 5.1k V0.1uF + 20uF Figure 28. Split Supply Application (SO PowerPAD) PRINTED CIRCUIT BOARD LAYOUT and EVALUATION BOARDS Generally, a good high-frequency layout will keep power supply and ground traces away from the inverting input and output pins.
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LM7372 www.ti.com SNOS926E – MAY 1999 – REVISED MARCH 2013 REVISION HISTORY Changes from Revision D (March 2013) to Revision E • Page Changed layout of National Data Sheet to TI format ..........................................................................................................
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 1-Nov-2013 (5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation of the previous line and the two combined represent the entire Device Marking for that device. (6) Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line.
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PACKAGE MATERIALS INFORMATION www.ti.com 23-Sep-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant LM7372IMAX/NOPB SOIC D 16 2500 330.0 16.4 6.5 10.3 2.3 8.0 16.0 Q1 LM7372MRX SO Power PAD DDA 8 2500 330.0 12.4 6.5 5.4 2.0 8.0 12.0 Q1 LM7372MRX/NOPB SO Power PAD DDA 8 2500 330.0 12.4 6.5 5.4 2.0 8.0 12.
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PACKAGE MATERIALS INFORMATION www.ti.com 23-Sep-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) LM7372IMAX/NOPB SOIC D 16 2500 367.0 367.0 35.0 LM7372MRX SO PowerPAD DDA 8 2500 367.0 367.0 35.0 LM7372MRX/NOPB SO PowerPAD DDA 8 2500 367.0 367.0 35.
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MECHANICAL DATA DDA0008B MRA08B (Rev B) www.ti.
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