LMH6739 Datasheet, PDF (1/10 Pages) National Semiconductor (TI) – Very Wideband, Low Distortion Triple Video Buffer

November 2004
LMH6739
Very Wideband, Low Distortion Triple Video Buffer
General Description
The LMH6739 is a very wideband, DC coupled monolithic
programmable gain buffer 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 LMH6739 of-
fers gains of −1, 1 and 2. At a gain of +2 the LMH6739
supports ultra high resolution video systems with a 400 MHz
2 V_PP 3 dB Bandwidth. With 12-bit distortion level through 30
MHz (R_L = 100Ω), 2.3nV/
input referred noise, the
LMH6739 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
LMH6739’s low input referred noise and low harmonic dis-
tortion make it an attractive solution. The LMH6739 is avail-
able in a space saving SSOP package.
Features
n 750 MHz −3 dB small signal bandwidth (A_V = +1)
n −85 dBc 3^rd harmonic distortion (20 MHz)
n 2.3 nV/
input noise voltage
n 3300 V/µs slew rate
n 32 mA supply current (10.6 mA per op amp)
n 90 mA linear output current
n 0.02/0.01 Diff. Gain / Diff. Phase (R_L = 150Ω)
n 2mA shutdown current
Applications
n RGB video driver
n High resolution projectors
n Flash A/D driver
n D/A transimpedance buffer
n Wide dynamic range IF amp
n Radar/communication receivers
n DDS post-amps
n Wideband inverting summer
n Line driver
Connection Diagram
16-Pin SSOP
Ordering Information
Package
16-pin SSOP
Part Number
LMH6739MQ
LMH6739MQX
Top View
20104110
Package Marking
LH6739MQ
Transport Media
95 Units/Rail
2.5k Units Tape and Reel
NSC Drawing
MQA16
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© 2004 National Semiconductor Corporation DS201041
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