255:

+

-

LMH6553

V

+

V

-

255:

-

+

275:

275:

ADC

8 to14 Bit

+

-

59:

50:

Single-Ended

AC-Coupled

Source

C

59:

49.9:

0.1PF

LMH6553

www.ti.com

SNOSB07H – SEPTEMBER 2008 – REVISED MARCH 2013

LMH6553 900 MHz Fully Differential Amplifier With Output Limiting Clamp

Check for Samples: LMH6553

1

FEATURES

DESCRIPTION

The LMH6553 is a 900 MHz differential amplifier with

23

•

900 MHz

−3 dB Small Signal

an integrated adjustable output limiting clamp. The

clamp increases system performance and provides

•

670 MHz

−3 dB Large Signal

transient over-voltage protection to following stages.

The internal clamp feature of the LMH6553 reduces

or eliminates the need for external discrete overload

•

−79 dB THD @ 20 MHz

protection networks. When used to drive ADCs, the

•

amplifier's output clamp allows low voltage ADC

•

10 ns Settling Time to 0.1%

inputs to be protected from being overdriven and

•

600 ps Clamp Overdrive Recovery Time

damaged by large input signals appearing at the

system input. Fast overdrive recovery of 600 ps

•

40 mV Clamp Accuracy with 100% Overdrive

ensures the amplifier output rapidly recovers from a

•

−0.1 mV/°C Clamp Temperature Drift

clamping event and quickly resumes to follow the

•

4.5 to 12 Supply Voltage Operation

input signal. The LMH6553 delivers exceptional

bandwidth, distortion, and noise performance ideal for

driving ADCs up to 14-bits. The LMH6553 could also

APPLICATIONS

be used for automotive, communication, medical, test

•

Differential ADC Driver

and measurement, video, and LIDAR applications.

•

Video Over Twisted Pair

With external gain set resistors and integrated

•

Differential Line Driver

common mode feedback, the LMH6553 can be

•

Single End to Differential Converter

configured as either a differential input to differential

output or single ended input to differential output gain

•

High Speed Differential Signaling

block. The LMH6553 can be AC or DC coupled at the

•

IF/RF Amplifier

input which makes it suitable for a wide range of

•

SAW Filter Buffer/Driver

applications including communication systems and

high speed oscilloscope front ends. The LMH6553 is

•

CCD Output Limiting Amplifier

available in 8-pin SO PowerPAD and 8-pin WSON

•

Automotive Safety Applications

packages, and is part of our LMH™ high speed

amplifier family.

Typical Application

Figure 1. Single-Ended Input Differential Output ADC Driver

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2

LMH is a trademark of Texas Instruments.

3

All other trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2008–2013, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.