LMH6738 - Very Wideband, Low Distortion Triple Op Amp

LMH6738 - Very Wideband, Low Distortion Triple Op Amp from the PowerWise® Family

Datasheet	Packaging	Samples & Pricing	Reliability	Design Tools	Models	Application Notes	Knowledge Base

Features

•	750 MHz -3 dB small signal bandwidth (A_V = +1)
•	-85 dBc 3rd harmonic distortion (20 MHz)
•	2.3 nV/Hz input noise voltage
•	3300 V/µs slew rate
•	33 mA supply current (11.3 mA per op amp)
•	90 mA linear output current
•	0.02/0.01 Diff. Gain / Diff. Phase (R_L = 150)

General Description

Applications

•	RGB video driver
•	High resolution projectors
•	Flash A/D driver
•	D/A transimpedance buffer
•	Wide dynamic range IF amp
•	Radar/communication receivers
•	DDS post-amps
•	Wideband inverting summer
•	Line driver

Parameters Values

-3dB BW 750 MHz

AvCL for -3dB BW 1 V/V

Slew Rate 3300 Volts/usec

Input OutputType Not Rail to Rail

Supply Min 10 Volt

Supply Max 12 Volt

Supply Current Per Channel 10.5 mA

PowerWise Rating 2 14 uA/MHz

Channels 3 Channels

Offset Voltage max, 25C 2.5 mV

Max Input Bias Current 5000 nA

Output Current 90 mA

Voltage Noise 2.2 nV/root(Hz)

Shut down Yes

Feedback Type Current

Av+1 BW 750 MHz

Av+2 BW 480 MHz

Av+5 BW 320 MHz

Av+10 BW 300 MHz

HD 2nd -80 dB

HD 3rd -90 dB

Diff Gain 0.02 dB

Diff Phase 0.01 %

Settling Time 10 ns

Tsettling Conditions to 1%

Function Op Amp

Gain Bandwidth 400 MHz

Temperature Min -40 deg C

Temperature Max 85 deg C

PowerWise Yes

Typical Performance

click for larger image

Also Recommended

LMH6733▲

Pin Compatible, Single Supply, Higher BW (1 GHz) Version

Additional Resources

Online Seminars

National`s Solutions for Video Applications: Part One
High Speed Amplifiers for Video Applications

Design Tools

Application Notes

Connection Diagram

click for larger image

Datasheet

RoHS Compliance Information	Size in Kbytes	Date
LMH6738 Very Wideband, Low Distortion Triple Op Amp	847 Kbytes	12-Apr-06	Download

If you have trouble printing or viewing PDF file(s), see Printing Problems.

Package Availability, Models, Samples & Pricing

Part Number

Package

Factory Lead Time

Models

Samples &
Electronic
Orders

Budgetary Pricing

Std
Pack
Size

Package
Marking
Format

Type

Pins

Spec.

MSL
Rating

Peak
Reflow

RoHS
Report

CAD
Symbols

Weeks

Qty

$US each

LMH6738MQ

SSOP

NOPB

260

RoHS

Download

Full production

LMH6738.MOD

1K+

$2.60

rail
of
95

NSXYTT
LH67
38MQ

8 weeks

2000

LMH6738MQX

SSOP

NOPB

260

RoHS

Download

Full production

LMH6738.MOD

1K+

$2.60

reel
of
2500

NSXYTT
LH67
38MQ

6 weeks

7500

General Description

The LMH6738 is a very wideband, DC coupled monolithic operational amplifier designed specifically for ultra high resolution video systems as well as wide dynamic range systems requiring exceptional signal fidelity. Benefiting from National's current feedback architecture, the LMH6738 offers a gain range of ±1 to ±10 while providing stable, operation without external compensation, even at unity gain. At a gain of +2 the LMH6738 supports ultra high resolution video systems with a 400 MHz 2 V_PP -3 dB Bandwidth. With 12-bit distortion levels through 30 MHz (R_L = 100), 2.3 nV/Hz input referred noise, the LMH6738 is the ideal driver or buffer for high speed flash A/D and D/A converters. Wide dynamic range systems such as radar and communication receivers requiring a wideband amplifier offering exceptional signal purity will find the LMH6738's low input referred noise and low harmonic distortion make it an attractive solution.

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LMH6738MQ	VIP 10	0	12801	0	0	1155000	4	327734403
LMH6738MQX	VIP 10	0	12801	0	0	1155000	4	327734403

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

For more information on Reliability Metrics, please click here.

Design Tools

Title	Size in Kbytes	Date
LMH730275 SSOP Triple High Speed Evaluation Board	114 Kbytes	1-May-03	View Online	Download

If you have trouble printing or viewing PDF file(s), see Printing Problems.

More Application Notes

Title	Size in Kbytes	Date
AN-1822: Application Note 1822 LMH6733 High Definition Video Transmission Over CAT5	691 Kbytes	14-Jan-09	Download
AN-1836: Application Note 1836 LMH1251 Evaluation Board Users Guide v2.0	2267 Kbytes	24-Jun-08	Download

If you have trouble printing or viewing PDF file(s), see Printing Problems.

[Information as of 7-Nov-2009]