LMH6704 Datasheet, PDF (1/20 Pages) National Semiconductor (TI) – 650 MHz Progammable Gain Buffer with Disable

LMH6704
www.ti.com
SNOSAD0C – FEBRUARY 2005 – REVISED MARCH 2013
LMH6704 650 MHz Selectable Gain Buffer with Disable
Check for Samples: LMH6704
FEATURES
1
•23 Wideband operation
– A_V = +1, V_O = 0.5 V_PP 650 MHz
– A_V = +2, V_O = 0.5 V_PP 450 MHz
– A_V = +2, V_O = 2 V_PP 400 MHz
• High output current ±90 mA
• Very low distortion
– 2^nd/3^rd harmonics (10 MHz, R_L = 100Ω):
−62/−78dBc
– Differential gain/Differential phase:
0.02%/0.02°
• Low noise 2.3nV/√Hz
• High slew rate 3000 V/μs
• Supply current 11.5 mA
APPLICATIONS
• HDTV, NTSC and PAL video systems
• Video switching and distribution
• ADC driver
• DAC buffer
• RGB driver
• High speed multiplexer
DESCRIPTION
The LMH™6704 is a very wideband, DC coupled
selectable gain buffer designed specifically for wide
dynamic range systems requiring exceptional signal
fidelity. The LMH6704 includes on chip feedback and
gain set resistors, simplifying PCB layout while
providing user selectable gains of +1, +2 and −1 V/V.
The LMH6704 provides a disable pin, which places
the amplifier in a high output impedance, low power
mode. The Disable pin may be allowed to float high.
With a 650 MHz Small Signal Bandwidth (A_V = +1),
full power gain flatness to 200 MHz, and excellent
Differential Gain and Phase, the LMH6704 is
optimized for video applications. High resolution video
systems will benefit from the LMH6704 ability to drive
multiple video loads at low levels of differential gain
or differential phase distortion.
The LMH6704 is constructed with proprietary high
speed complementary bipolar process using proven
current feedback circuit architectures. It is available in
8 Pin SOIC and 6 Pin SOT-23 packages.
CONNECTION DIAGRAM
8 Pin SOIC
Top View
1
N/C
465:
-IN ^{2 465:} -
+IN ³
+
8 _DIS
7 _VS+
6 _OUT
V_S- ⁴
5
N/C
6 Pin SOT-23
Top View
1
OUT
6 _VS+
V_S- ²
3
+IN
+-
465:
5
DIS
465:
4
-IN
See Package Number D0008A
See Package Number DBV0006A
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.
LMH is a trademark of Texas Instruments.
2
All other trademarks are the property of their respective owners.
3
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2005–2013, Texas Instruments Incorporated