NSC LM7372MWC, LM7372MR, LM7372IMA, LM7372ILDX, LM7372ILD Datasheet

February 2002

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 amplifiers; 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 ±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

n−80dBc highest harmonic distortion @1MHz, 2VPP

nVery high slew rate: 3000V/µs

nWide gain bandwidth product: 120MHz

n−3dB frequency @ AV = +2: 200MHz

nLow supply current: 13mA (both amplifiers)

nHigh open loop gain: 85dB

nHigh output current: 150mA

nDifferential gain and phase: 0.01%, 0.02Ê

Applications

nHDSL and ADSL Drivers

nMultimedia broadcast systems

nProfessional video cameras

nCATV/Fiber optics signal processing

nPulse amplifiers and peak detectors

nHDTV amplifiers

Typical Application

20004903

FIGURE 1. Single Supply Application (SOIC-16)

Amplifier Operational Dual Current, Output High Speed, High LM7372

© 2002 National Semiconductor Corporation

DS200049

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LM7372

Connection Diagrams

16-Pin SOIC

8-Contact LLP

	20004902
Top View	20004901
* Heatsink Pins. See note 4	Top View

8-Pin PSOP

20004929

Top View

For PSOP SOIC-8 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	Package Markiing	Transport Media	NSC
					Drawing
		−40ÊC to +85ÊC
	16-Pin SOIC	LM7372IMA	LM7372IMA	Rails	M16A
		LM7372IMAX	LM7372IMA	2.5k Units Tape and Reel
	8-Pin LLP	LM7372ILD	L7372	1k Units Tape and Reel	LDC08A
		LM7372ILDX	L7372	4.5k Units Tape and Reel
	8-Pin PSOP	LM7372MR	LM7372MR	Rails	MRA08A
		LM7372MRX	LM7372MR	2.5k Units Tape and Reel

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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
Human Body Model	1.5kV (Note 2)
Machine Model	200V (Note 2)
Suppy Voltage (V+−V − )	36V
Differential Input Voltage (VS = ±15V)	±10V
Output Short Circuit to Ground
(Note 3)	Continuous
Storage Temp. Range	−65ÊC to 150ÊC
Soldering Information
Infrared or Convection Reflow (20
sec.)	235ÊC
Wave Soldering Lead Temperature
(10 sec.)	260ÊC

Input Voltage	V− to V+
Maximum Junction Temperature
(Note 4)	150ÊC

Operating Ratings (Note 1)

Supply Voltage	9V ≤ VS ≤ 36V
Junction Temperature Range(TJ)
LM7372	−40ÊC ≤ TJ ≤ 85ÊC
Thermal Resistance(θJA)
16-Pin SOIC See (Note 4)	106ÊC/W
	70ÊC/W
LLP-8 Package
(See Application Section)	40ÊC/W
8-Pin PSOP
(See Application Section)	59ÊC/W

± 15V DC Electrical Characteristics

Unless otherwise specified, all limits guaranteed for TJ = 25ÊC, VCM = 0V and RL = 1kΩ. Boldface apply at the temperature extremes.

Symbol	Parameter	Conditions	Min	Typ	Max	Units
			(Note 6)	(Note 5)	(Note 6)
VOS	Input Offset Voltage			2.0	8.0	mV
					10.0
TC VOS	Input Offset Voltage Average Drift			12		µV/ÊC
IB	Input Bias Current			2.7	10	µA
					12
IOS	Input Offset Current			0.1	4.0	µA
					6.0
RIN	Input Resistance	Common Mode		40		MΩ
		Differential Mode		3.3		MΩ
RO	Open Loop Output Resistance			15		Ω
CMRR	Common Mode Rejection Ratio	VCM = ±10V	75	93		dB
			70
PSRR	Power Supply Rejection Ratio	VS = ±15V to ±5V	75	90		dB
			70
VCM	Input Common-Mode Voltage Range	CMRR > 60dB		±13		V
AV	Large Signal Voltage Gain (Note 7)	RL = 1kΩ	75	85		dB
			70
		RL = 100Ω	70	81		dB
			66
VO	Output Swing	RL = 1kΩ	13	13.4		V
			12.7
			−13	−13.3		V
			−12.7
		IOUT = − 150mA	11.8	12.4		V
			11.4
		IOUT = 150mA	−11.2	−11.9		V
			−10.8
ISC	Output Short Circuit Current	Sourcing		260		mA
		Sinking		250		mA

LM7372

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LM7372

± 15V DC Electrical Characteristics (Continued)

Unless otherwise specified, all limits guaranteed for TJ = 25ÊC, VCM = 0V and RL = 1kΩ. Boldface apply at the temperature extremes.

Symbol	Parameter	Conditions	Min	Typ	Max	Units
			(Note 6)	(Note 5)	(Note 6)
IS	Supply Current (both Amps)			13	17	mA
					19

± 15V AC Electrical Characteristics

Unless otherwise specified, all limits guaranteed for TJ = 25ÊC, VCM = 0V and RL = 1kΩ. Boldface apply at the temperature extremes.

Symbol	Parameter	Conditions	Min	Typ	Max	Units
			(Note 6)	(Note 5)	(Note 6)
SR	Slew Rate (Note 8)	AV = +2, VIN 13VP-P		3000		V/µs
		AV = +2, VIN 10VP-P		2000
	Unity Bandwidth Product			120		MHz
	−3dB Frequency	A V = +2		220		MHz
φm	Phase Margin	AVOL = 6dB		70		deg
tS	Settling Time (0.1%)	AV = −1, A O = ±5V,		50		ns
		RL = 500Ω
tP	Propagation Delay	AV = −2, V IN = ±5V,		6.0		ns
		RL = 500Ω
AD	Differential Gain (Note 9)			0.01		%
φD	Differential Phase (Note 9)			0.02		deg
hd2	Second Harmonic Distortion	VOUT = 2VP-P, RL = 100Ω		−80		dBc
	FIN = 1MHz, AV = +2	VOUT = 16.8VP-P, RL = 100Ω		−73		dBc
hd3	Third Harmonic Distortion	VOUT = 2VP-P, RL = 100Ω		−91		dBc
	FIN = 1MHz, AV = +2	VOUT = 16.8VP-P, RL = 100Ω		−67		dBc
IMD	Intermodulation Distortion	Fin 1 = 75kHz,		−87		dBc
		Fin 2 = 85kHz
		VOUT = 16.8VP-P, RL = 100Ω
en	Input-Referred Voltage Noise	f = 10kHz		14		nV/
in	Input-Referred Current Noise	f = 10kHz		1.5		pA/

± 5V DC Electrical Characteristics

Unless otherwise specified, all limits guaranteed for TJ = 25ÊC, VCM = 0V and RL = 1kΩ. Boldface apply at the temperature extremes.

Symbol	Parameter	Conditions	Min	Typ	Max	Units
			(Note 6)	(Note 5)	(Note 6)
VOS	Input Offset Voltage			2.2	8.0	mV
					10.0
TC VOS	Input Offset Voltage Average Drift			12		µV/ÊC
IB	Input Bias Current			3.3	10	µA
					12
IOS	Input Offset Current			0.1	4	µA
					6
RIN	Input Resistance	Common Mode		40		MΩ
		Differential Mode		3.3		MΩ
RO	Open Loop Output Resistance			15		Ω
CMRR	Common Mode Rejection Ratio	VCM = ±2.5V	70	90		dB
			65

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± 5V DC Electrical Characteristics (Continued)

Unless otherwise specified, all limits guaranteed for TJ = 25ÊC, VCM = 0V and RL = 1kΩ. Boldface apply at the temperature extremes.

Symbol	Parameter	Conditions	Min	Typ	Max	Units
			(Note 6)	(Note 5)	(Note 6)
PSRR	Power Supply Rejection Ratio	VS = ±15V to ±5V	75	90		dB
			70
VCM	Input Common-Mode Voltage Range	CMRR > 60dB		±3		V
AV	Large Signal Voltage Gain (Note 7)	RL = 1kΩ	70	78		dB
			65
		RL = 100Ω	64	72		dB
			60
VO	Output Swing	RL = 1kΩ	3.2	3.4		V
			3.0
			−3.2	−3.4		V
			−3.0
		IOUT = − 80mA	2.5	2.8		V
			2.2
		IOUT = 80mA	−2.5	−2.7		V
			−2.2
ISC	Output Short Circuit Current	Sourcing		150		mA
		Sinking		150		mA
IS	Supply Current (both Amps)			12.4	16	mA
					18

± 5V AC Electrical Characteristics

Unless otherwise specified, all limits guaranteed for TJ = 25ÊC, VCM = 0V and RL = 1kΩ. Boldface apply at the temperature extremes.

Symbol	Parameter	Conditions	Min	Typ	Max	Units
			(Note 6)	(Note 5)	(Note 6)
SR	Slew Rate (Note 8)	AV = +2, VIN 3VP-P		700		V/µs
	Unity Bandwidth Product			100		MHz
	−3dB Frequency	A V = +2		125		MHz
φm	Phase Margin			70		deg
tS	Settling Time (0.1%)	AV = −1, V O = ±1V, RL =		70		ns
		500Ω
tP	Propagation Delay	AV = +2, VIN = ±1V, RL =		7		ns
		500Ω
AD	Differential Gain (Note 9)			0.02		%
φD	Differential Phase (Note 9)			0.03		deg
hd2	Second Harmonic Distortion	VOUT = 2VP-P, RL = 100Ω		−84		dBc
	FIN = 1MHz, AV = +2
hd3	Third Harmonic Distortion	VOUT = 2VP-P, RL = 100Ω		−94		dBc
	FIN = 1MHz, AV = +2
en	Input-Referred Voltage Noise	f = 10kHz		14		nV/
in	Input-Referred Current Noise	f = 10kHz		1.8		pA/

Note 1: 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 specific performance is not guaranteed. For guaranteed specifications and the test conditions, see the Electrical Characteristics.

Note 2: For testing purposes, ESD was applied using human body model, 1.5kΩ in series with 100pF. Machine model, 0Ω in series with 200pF.

Note 3: Applies to both single-supply and split-supply operation. Continuous short circuit operation at elevated ambient temperature can result in exceeding the maximum allowed junction temperature of 150ÊC.

LM7372

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