Features Small signal bandwidth 2.8 GHz 2 VPP large signal bandwidth 1.8 GHz 0.1 dB Gain flatness 830 MHz OIP3 @ 150 MHz 46.5 dBm HD2/HD3 @ 75 MHz -96 / -97 dBc Input noise voltage 0.9 nV/ √Hz Input noise current 11 pA/ √Hz Slew rate 6200 V/μs Power 260mW Typical supply current 52 mA Package 14 Lead LLP Description The LMH6554 is a high performance fully differential amplifier designed to provide the exceptional signal fidelity and wide large-signal bandwidth necessary for driving 8 to 16 bit high speed data acquisition systems. Using National’s proprietary differential current mode input stage architecture, the LMH6554 has unity gain, small-signal bandwidth of 2.8 GHz and allows operation at gains greater than unity without sacrificing response flatness, bandwidth, harmonic distortion, or output noise performance. The device's low impedance differential output is designed to drive ADC inputs and any intermediate filter stage. The LMH6554 delivers 16-bit linearity up to 75 MHz when driving 2V peak-to-peak into loads as low as 200Ω. The LMH6554 is fabricated in National Semiconductor’s advanced complementary BiCMOS process and is available in a space saving 14 lead LLP package for higher performance. Applications Differential ADC driver Single-ended to differential converter High speed differential signaling IF/RF and baseband gain blocks SAW filter buffer/driver Oscilloscope Probes Automotive Safety Applications Video over twisted pair Differential line driver

Also Recommended ADC16DV160 High-performance Dual 16-bit, 160-MSPS ADC ADC16V130 16-Bit, 130 MSPS A/D Converter To Complete Signal Path LMK04000 Precision Clock Conditioner With Dual PLL Typical Application, SE input driving ADC

Typical Application click for larger image Typical Application, SE input driving ADC	Connection Diagram click for larger image Connection Diagram
Typical Performance click for larger image Frequency response vs Rf at Av=2

Parameters Values Channels 1 Channels Input OutputType Diff In and Out Gain Bandwidth 2500 MHz Slew Rate 6200 Volts/usec Supply Min 4.7 Volt Supply Max 5.25 Volt Offset Voltage max, 25C 3 mV Supply Current Per Channel 52 mA PowerWise Rating 2 20.8 uA/MHz Max Input Bias Current 10000 nA Output Current 150 mA Voltage Noise 0.9 nV/root(Hz) Shut down Yes Feedback Type Current Av+1 BW 2800 MHz Av+2 BW 2500 MHz HD 2nd -96 dB HD 3rd -97 dB Special Features Output Common Mode Control Pin Function Op Amp Temperature Min -40 deg C Temperature Max 125 deg C Automotive Yes PowerWise Yes

Datasheets

Title		Size	Date	Other Language
	LMH6554 2.8 GHz Ultra Linear Fully Differential Amplifier	945 Kbytes	14-Nov-11

Application Notes

Title		Size	Date	Other Language
	AN-1945: Application Note 1945 LMH6554LE-EVAL High Speed Differential Amplifier Evaluation Board	440 Kbytes	5-Jul-11
	AN-2177: Application Note 2177 Using the LMH6554 as a ADC Driver	1907 Kbytes	25-Jul-11
	AN-2188: Application Note 2188 Between the Amplifier and the ADC: Managing Filter Loss in Communications Systems	174 Kbytes	26-Oct-11
	AN-1704: Application Note 1704 LMH6555 Application as High Speed ADC Input Driver	141 Kbytes	20-Sep-07	日本語 中文
	AN-1716: Application Note 1716 Driving the ADC14DS105 High-Speed A/D Converter for High Performance	86 Kbytes	20-Jul-11	日本語 中文
	AN-1719: Application Note 1719 Noise Figure Analysis Fully Differential Amplifier	158 Kbytes	18-Sep-07	日本語 中文
	AN-1743: Application Note 1743 LMH6552SDEVAL High Speed Differential Amplifier Evaluation Board	417 Kbytes	20-Jun-08

Other Technical Documents

Title		Type	Date
	Driving High-Speed ADCs in Wideband Applications	External Article	2010-02-24
	Solutions for Time Interleaving Ultra-high-speed ADCs at the PCB Level	External Article	2009-11-09
	The Tinker's Toolbox - Scott Kulchycki of National Semiconductor on RF-Sampling ADCs (Podcast + Foils)	External Article	2011-08-30

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
LMH6554LE/NOPB RoHS Status	LLP	Full production Lead Time: 6 weeks	Distributor Region Qty AVNET-EM Worldwide 870 DIGI-KEY Worldwide 0	$4.49 each at 1K+ pcs	reel of 1000
LMH6554LEE/NOPB RoHS Status	LLP	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 250 AVNET-EM Worldwide 463 DIGI-KEY Worldwide 460 FARNELL Europe and Asia 191 MOUSER Worldwide 169 NEWARK Americas 131 TAYLOR Americas 250	$4.49 each at 1K+ pcs	reel of 250
LMH6554LEX/NOPB RoHS Status	LLP	Full production Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 0	$4.49 each at 1K+ pcs	reel of 4500

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for LMH6554.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for LMH6554 is located at RoHS Status.

Part Number(s) (NSID)	Description	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
LMH6554LE-EVAL/NOPB	Evaluation board for the LMH6554	Full production Lead Free (RoHS)	Distributor Region Qty ARROW Worldwide 2 AVNET-EM Worldwide 2 DIGI-KEY Worldwide 0 MOUSER Worldwide 4 TAYLOR Americas 2	$100.00 each	1
Description: The LMH6554LE−EVAL evaluation board is designed to aid in the characterization of National Semiconductors LMH6554 fully differential amplifier in an 14 lead LLP package. The LMH6554 is part of the LMH® high speed amplifier family. Use the evaluation board as a guide for high frequency layout and as a tool to aid in device testing and characterization. Contents: Assembled LMH6554LE-EVAL Board LMH6554 Datasheet LMH6554 AN-1945

National Semiconductor follows the provisions of the Product Stewardship Guide for Customers (CSP-9-111C1) and Banned Substances and Materials of Interest Specification (CSP-9-111S2) for regulatory environmental compliance. Details may be found at: www.national.com/en/packaging/greennopb.html. Lead free products are RoHS compliant.

Lead Free product status is available through the search tool located here

Part Number(s) (NSID)	Weight (milligrams)	Type	Pins	MSL Rating	Peak Reflow	RoHS Status	CAD Symbols	Models	Package Marking Format
LMH6554LE/NOPB	11.252	LLP	14	3	260	Detail	Download	spice file	XYTT AJA
LMH6554LEE/NOPB	11.252	LLP	14	3	260	Detail	Download	spice file	XYTT AJA
LMH6554LEX/NOPB	11.252	LLP	14	3	260	Detail	Download	spice file	XYTT AJA

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for LMH6554.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for LMH6554 is located at RoHS Status.

CAD Symbols and Models Download LMH6554 CAD Symbols

Models spice file

Software-Defined Radio (SDR) Webinar Click image to play video in new window What's New in Signal Path -- November 09 Loading video...

Software-Defined Radio (SDR) Webinar Date: 2010-08-30 Length: 0:28:23 What's New in Signal Path -- November 09 Date: 2009-12-07 Length: 0:08:13