NSC CLC428MDC, CLC428AJP, CLC428AJE-TR13, CLC428AJE, 5962-9470801MPA Datasheet

N	June 1999

CLC428

Dual Wideband, Low-Noise, Voltage Feedback Op Amp

General Description

The CLC428 is a very high-speed dual op amp that offers a traditional voltage-feedback topology featuring unity-gain stability and slewenhanced circuitry. The CLC428’s ultra low noise and very low harmonic distortion combine to form a very wide dynamic-range op amp that operates from a single (5 to 12V) or dual (±5V) power supply.

Each of the CLC428’s closely matched channels provides a 160MHz unity-gain bandwidth with an ultra low input voltage noise density (2nV/√Hz). Very low 2nd/3rd harmonic distortion (-62/-72dBc) as well as high channel-to-channel isolation (-62dB) make the CLC428 a perfect wide dynamic-range amplifier for matched I/Q channels.

With its fast and accurate settling (16ns to 0.1%), the CLC428 is also a excellent choice for wide-dynamic range, anti-aliasing filters to buffer the inputs of hi-resolution analog-to-digital converters. Combining the CLC428’s two tightly-matched amplifiers in a single eight-pin SOIC reduces cost and board space for many composite amplifier applications such as active filters, differential line drivers/ receivers, fast peak detectors and instrumentation amplifiers.

To reduce design times and assist in board layout, the CLC428 is supported by an evaluation board and a SPICE simulation model available from National Semiconductor.

Features

■Wide unity-gain bandwidth: 160MHz

■Ultra-low noise: 2.0nV/√Hz

■Low distortion: -78dBc 2nd (2MHz)

-62/-72dBc (10MHz)

■Settling time: 16ns to 0.1%

■Supply voltage range: ±2.5 to ±5 or single supply

■High output current: ±80mA

Applications

■General purpose dual op amp

■Low noise integrators

■Low noise active filters

■Diff-in/diff-out instrumentation amp

■Driver/receiver for transmission systems

■High-speed detectors

■I/Q channel amplifiers

Typical Application

5-Decade Integrator

CLC428

Amp Op Feedback Voltage Noise,-Low Wideband, Dual

			Vout1		1
Pinout
DIP & SOIC			Vinv1		2
		Vnon-inv1
					3
			-Vcc
					4

-

+

-

+

8 +Vcc

7 Vout2

6 Vinv2

5 Vnon-inv2

1999 National Semiconductor Corporation

http://www.national.com

Printed in the U.S.A.

CLC428 Electrical Characteristics (VCC = ±5V; AV = +2V/V; Rf =100Ω; Rg =100Ω; RL = 100Ω; unless noted;

PARAMETERS	CONDITIONS		TYP			MIN/MAX RATINGS					UNITS		NOTES
Ambient Temperature	CLC428		+25°C		+25°C		0 to +70°C	-40 to +85°C
FREQUENCY DOMAIN RESPONSE
gain bandwidth product	Vout < 0.5Vpp		135		100		80		70		MHz
-3dB bandwidth, Av=+1	Vout < 0.5Vpp		160		120		90		80		MHz
Av=+2	Vout < 0.5Vpp		80		50		40		35		MHz
	Vout < 5.0Vpp		40		25		22		20		MHz
gain flatness	Vout < 0.5Vpp
peaking	DC to 200MHz		0.0		0.6		0.8		1.0		dB
rolloff	DC to 20MHz		0.05		0.5		0.7		0.7		dB
linear phase deviation	DC to 20MHz		0.2		1.0		1.5		1.5		°
TIME DOMAIN RESPONSE
rise and fall time	1V step		5.5		7.5		9.0		10.0		ns
settling time	2V step to 0.1%		16		20		24		24		ns
overshoot	1V step		1		5		10		10		%
slew rate	5V step		500		300		275		250		V/µs
DISTORTION AND NOISE RESPONSE
2nd harmonic distortion	1Vpp,10MHz		- 62		- 50		- 45	-	43		dBc
3rd harmonic distortion	1Vpp,10MHz		- 72		- 60		- 56	-	56		dBc
equivalent input noise											nV/√Hz
voltage	1MHz to 100MHz		2.0		2.5		2.8		2.8
current	1MHz to 100MHz		2.0		3.0		3.6		4.6		pA/√Hz
crosstalk	input referred, 10MHz		- 62		- 58		- 58	-	58		dB
STATIC DC PERFORMANCE
open-loop gain			60		56		50		50		dB
input offset voltage			1.0		2.0		3.0		3.5		mV		A
average drift			5		---		15		20		µV/°C
input bias current			1.5		25		40		65		µA		A
average drift			150		---		600		700		nA/°C
input offset current			0.3		3		5		5		µA
average drift			5		---		25		50		nA/°C
power supply rejection ratio			66		60		55		55		dB
common-mode rejection ratio	per channel, RL= ∞		63		57		52		52		dB
supply current			11		12		13		15		mA		A
MISCELLANEOUS PERFORMANCE											kΩ
input resistance	common-mode		500		250		125		125
	differential-mode		200		50		25		25		kΩ
input capacitance	common-mode		2.0		3.0		3.0		3.0		pF
	differential-mode		2.0		3.0		3.0		3.0		pF
output resistance	closed loop		0.05		0.1		0.2		0.2		Ω
output voltage range	RL= ∞		± 3.8		± 3.5		± 3.3	±	3.3		V
	RL=100Ω		± 3.5		± 3.2		± 2.6	±	1.3		V
input voltage range	common mode		± 3.7		± 3.5		± 3.3	±	3.3		V
output current			± 70		± 50		± 40	±	20		mA

Min/max ratings are based on product characterization and simulation. Individual parameters are tested as noted. Outgoing quality levels are determined from tested parameters.

Absolute Maximum Ratings

supply voltage	±7V
short circuit current	(note 1)
common-mode input voltage	±Vcc
differential input voltage	±10V
maximum junction temperature	+150° C
storage temperature	-65°C to+150°C
lead temperature (soldering 10 sec)	+300°C

Ordering Information

Model	Temperature Range	Description
CLC428AJP	-40°C to +85°C	8-pin PDIP
CLC428AJE	-40°C to +85°C	8-pin SOIC
CLC428A8B	-55°C to +125°C	8-pin CerDIP, MIL-STD-883

DESC SMD number: 5962-94708

Notes

A)J-level: spec is 100% tested at +25°C, sample tested at +85°C.

1)Output is short circuit protected to ground, however maximum reliability is obtained if output current does not exceed 160mA.

Reliability Information

Transistor count

104

Package Thermal Resistance

Package	θjc	θjA
Plastic (AJP)	60°C/W	115°C/W
Surface Mount (AJE)	40°C/W	115°C/W
CerDIP	25°C/W	115°C/W

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