LMH6644 - Low Power, 130MHz, 75mA Rail-to-Rail Output Amplifiers

LMH6644 - Low Power, 130MHz, 75mA Rail-to-Rail Output Amplifiers from the PowerWise® Family

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

Features

(V_S = ±5V, T_A = 25°C, R_L = 2kΩ, A_V = +1. Typical values unless specified).

−3dB BW (A_V = +1)	130MHz
Supply voltage range	2.7V to 12.8V
Slew rate , (A_V = −1)	130V/µs
Supply current (no load)	2.7mA/amp
Output short circuit current	+115mA/−145mA
Linear output current	±75mA
Input common mode volt.	0.5V beyond V −, 1V from V +
Output voltage swing	40mV from rails
Input voltage noise (100kHz)	17nV/
Input current noise (100kHz)	0.9pA/
THD (5MHz, R_L = 2kΩ, V_O = 2V_PP, A_V = +2)	−62dBc
Settling time	68ns
Fully characterized for 3V, 5V, and ±5V
Overdrive recovery	100ns
Output short circuit protected
No output phase reversal with CMVR exceeded

General Description

The LMH664X family true single supply voltage feedback amplifiers offer high speed (130MHz), low distortion (−62dBc), and exceptionally high output current (approximately 75mA) at low cost and with reduced power consumption when compared against existing devices with similar performance.

Input common mode voltage range extends to 0.5V below V − and 1V from V +. More...

Applications

•	Active filters
•	CD/DVD ROM
•	ADC buffer amp
•	Portable video
•	Current sense buffer

Parameters Values

-3dB BW 130 MHz

AvCL for -3dB BW 1 V/V

Slew Rate 135 Volts/usec

Input OutputType Vcm to V-, R-R Out

Supply Min 2.7 Volt

Supply Max 12.8 Volt

Supply Current Per Channel 2.7 mA

PowerWise Rating 2 20.8 uA/MHz

Channels 4 Channels

Offset Voltage max, 25C 5 mV

Max Input Bias Current 3250 nA

Output Current 115 mA

Voltage Noise 17 nV/root(Hz)

Shut down No

Feedback Type Voltage

Av+1 BW 130 MHz

Av+2 BW 65 MHz

Av+5 BW 26 MHz

Av+10 BW 13 MHz

Av+20 BW 6.5 MHz

HD 2nd -80 dB

HD 3rd -65 dB

Diff Gain 0.01 dB

Diff Phase 0.01 %

Settling Time 68 ns

Tsettling Conditions to 0.1%

Function Op Amp

Gain Bandwidth 130 MHz

Temperature Min -40 deg C

Temperature Max 85 deg C

PowerWise Yes

Typical Performance

click for larger image

WEBENCH Live Simulation!

LMH6644 Webench® Custom
Design/Analyze/Build It

Select Topology

Active Filter Designer

Inverting Amplifier

AC-Coupled Inverting Amp

NonInverting Amp

Integrator

Lowpass Filter

Lowpass Filter 4th Order

Highpass Filter

Required Parameters

Supply voltage:

If "Other", Positive Supply is:

If "Other", Negative Supply is:

NOTE: 2.7 V <= Total Supply Voltage <= 12.8 V

What is Webench?

Also Recommended

LMH6612▲

Dual With Higher 345MHz Bandwidth And Rail To Rail Output

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
LMH6642/LMH6643/LMH6644 Low Power, 130MHz, 75mA Rail-to-Rail Output Amplifiers	700 Kbytes	20-Nov-08	Download
LMH6642/LMH6643/LMH6644 Low Power, 130MHz, 75mA Rail-to-Rail Output Amplifiers (Japanese)	1216 Kbytes

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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

LMH6644MA

SOIC NARROW

NOPB
STD

1
1

260
235

RoHS

Download

Full production

LMH6644.MOD

1K+

$1.30

rail
of
55

NSUZXYTTE#
LMH6644MA

6 weeks

2000

LMH6644MAX

SOIC NARROW

NOPB
STD

1
1

260
235

RoHS

Download

Full production

LMH6644.MOD

1K+

$1.30

reel
of
2500

NSUZXYTTE#
LMH6644MA

8 weeks

7500

LMH6644MT

TSSOP

NOPB

260

RoHS

Download

Full production

LMH6644.MOD

1K+

$1.30

rail
of
94

NSZXYTT
LMH66
44MT

6 weeks

1000

LMH6644MTX

TSSOP

NOPB
STD

1
1

260
260

RoHS

Download

Full production

LMH6644.MOD

1K+

$1.30

reel
of
2500

NSZXYTT
LMH66
44MT

6 weeks

7500

LMH6644 MDC

Unpackaged Die

Full production

LMH6644.MOD

CALL

tray
of
N/A

6 weeks

N/A

Obsolete Versions

Obsolete Part	Alternate Part or Supplier	Source	Last Time Buy Date
LMH6644MAXEP	NONE	NATIONAL SEMICONDUCTOR	16 Nov 2008
LMH6644MDC	NONE	NATIONAL SEMICONDUCTOR	16 Nov 2008

General Description

Input common mode voltage range extends to 0.5V below V − and 1V from V +. Output voltage range extends to within 40mV of either supply rail, allowing wide dynamic range especially desirable in low voltage applications. The output stage is capable of approximately 75mA in order to drive heavy loads. Fast output Slew Rate (130V/µs) ensures large peak-to-peak output swings can be maintained even at higher speeds, resulting in exceptional full power bandwidth of 40MHz with a 3V supply. These characteristics, along with low cost, are ideal features for a multitude of industrial and commercial applications.

Careful attention has been paid to ensure device stability under all operating voltages and modes. The result is a very well behaved frequency response characteristic (0.1dB gain flatness up the 12MHz under 150Ω load and A_V = +2) with minimal peaking (typically 2dB maximum) for any gain setting and under both heavy and light loads. This along with fast settling time (68ns) and low distortion allows the device to operate well in ADC buffer, and high frequency filter applications as well as other applications.

This device family offers professional quality video performance with low DG (0.01%) and DP (0.01°) characteristics. Differential Gain and Differential Phase characteristics are also well maintained under heavy loads (150Ω) and throughout the output voltage range. The LMH664X family is offered in single (LMH6642), dual (LMH6643), and quad (LMH6644) options. See ordering information for packages offered.

Reliability Metrics

Part Number	Process	EFR Sample Size	LTA Device Hours	FITS	MTTF (Hours)
LMH6644 MDC	VIP 10	12801	1155000	4	327734403
LMH6644MA	VIP 10	12801	1155000	4	327734403
LMH6644MAX	VIP 10	12801	1155000	4	327734403
LMH6644MT	VIP 10	12801	1155000	4	327734403
LMH6644MTX	VIP 10	12801	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
CLC730131 TSSOP-14 Quad Evaluation Board - Included with LMH6644MT Sample Order	297 Kbytes	19-Feb-02	View Online	Download
CLC730231 SOIC-14 Quad High-Speed Evaluation Board - Included with LMH6644MA Sample Order	114 Kbytes	1-May-03	View Online	Download

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More Application Notes

Title	Size in Kbytes	Date
AN-1255: Application Note 1255 An OrCAD PSPICE Library for the VIP10 High-Speed Op Amp	160 Kbytes	19-Nov-08	Download
AN-1255 (Japanese): Application Note 1255 An OrCAD PSPICE Library for the VIP10 High-Speed Op Amp	138 Kbytes
AN-1255 (Chinese): Application Note 1255 An OrCAD PSPICE Library for the VIP10 High-Speed Op Amp	236 Kbytes
AN-1244: Application Note 1244 Photo-Diode Current-to-Voltage Converters	77 Kbytes	17-Sep-02	Download
AN-1240: Application Note 1240 Video Transmission Over Twisted Pair Wire	59 Kbytes	24-Sep-02	Download

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[Information as of 7-Nov-2009]