lmh6734 National Semiconductor Corporation, lmh6734 Datasheet

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lmh6734

Manufacturer Part Number
lmh6734
Description
Single Supply, Ultra High-speed, Triple Selectable Gain Buffer
Manufacturer
National Semiconductor Corporation
Datasheet
© 2007 National Semiconductor Corporation
LMH6734
Single Supply, Ultra High-Speed, Triple Selectable Gain
Buffer
General Description
The LMH6734 is a high speed monolithic selectable gain
buffer designed specifically for ultra high resolution video sys-
tems as well as wide dynamic range systems requiring ex-
ceptional signal fidelity. Benefiting from National's current
feedback architecture, the LMH6734 offers gains of −1, +1
and +2. At a gain of +2 the LMH6734 supports ultra high res-
olution
3 dB bandwidth. With this large signal bandwidth and 2.1 nV/
component video over CAT5 cable up to 200 ft without fre-
quency and gain equalization. The LMH6734 is offered in a
space saving 16-Pin SSOP package.
Connection Diagram
VIP10™ is a trademark of National Semiconductor Corporation.
of input referred noise, the LMH6734 is ideal for driving
video
systems
with
a
560
300036
MHz
2
R
16-Pin SSOP
F
V
Top View
= R
PP
G
= 327Ω
Features
(Typical values unless otherwise specified.)
Applications
Supply range 3V to 12V single supply
Supply range ±1.5V to ±6V split supply
925 MHz −3 dB small signal bandwidth (A
650 MHz −3 dB small signal bandwidth (A
Low supply current (5.5 mA per op amp, V
2.1 nV/
3750 V/μs slew rate (V
70 mA linear output current (A
Input range and output swing to 1V from each supply rail
HDTV component video driver
CAT5 component video driver
High resolution projectors
Wide dynamic range IF amp
DDS post-amps
Wideband inverting summer
Line driver
Hz input noise voltage
30003610
S
= ±5V)
V
= +2, V
S
September 2007
V
V
= ±5V)
= +1, V
S
= +2, V
www.national.com
= 5V)
S
S
= ±5V)
= 5V)

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lmh6734 Summary of contents

Page 1

... Benefiting from National's current feedback architecture, the LMH6734 offers gains of −1, +1 and + gain of +2 the LMH6734 supports ultra high res- olution video systems with 3 dB bandwidth ...

Page 2

Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. ESD Tolerance (Note 5) Human Body Model Machine Model Supply Voltage ( – OUT ...

Page 3

Symbol Parameter XTLK Crosstalk I Supply Current CC Supply Current Disabled V Supply Current Disabled V Gain Error Gain Miscellaneous Performance R + Non-Inverting Input Resistance Non-Inverting Input Capacitance IN R Output Impedance O V Output Voltage ...

Page 4

Symbol Parameter Distortion HD2L 2 nd Harmonic Distortion HD3L 3 rd Harmonic Distortion Equivalent Input Noise V Non-Inverting Voltage N I Inverting Current CN N Non-Inverting Current CN Video Performance DG Differential Gain DP Differential Phase Static, DC Performance V ...

Page 5

... Note 8: Limits are 100% production tested at 25C. Limits over the operating temperature range are guaranteed through correlation using Statistical Quality Control (SQC) methods. Ordering Information Package Part Number LMH6734MQ 16-Pin SSOP LMH6734MQX , θ . The maximum allowable power dissipation at any ambient temperature is J(MAX) JA Package Marking Transport Media ...

Page 6

Typical Performance Characteristics V specified.) Large Signal Frequency Response Small Signal Frequency Response Frequency Response vs. Supply Voltage www.national.com + = + 25° Small Signal Frequency Response 30003631 Frequency Response vs. V 30003664 Gain Flatness 30003662 ...

Page 7

Gain Flatness, Dual Input Buffer 30003648 Crosstalk vs. Frequency 30003633 Distortion vs. Output Voltage 30003634 Pulse Response Distortion vs. Frequency Small Signal Frequency Response vs. Resistive Load 7 30003622 30003635 30003661 www.national.com ...

Page 8

Frequency Response vs. Capacitive Load PSRR vs. Frequency Closed Loop Output Impedance |Z| www.national.com Series Output Resistance vs. Capacitive Load 30003614 Open Loop Gain and Phase 30003621 Disable Timing 30003604 8 30003619 30003626 30003624 ...

Page 9

DC Errors vs. Temperature Disabled Channel Isolation vs. Frequency Typical Performance Characteristics V unless otherwise specified.) Large Signal Frequency Response Channel to Channel Crosstalk vs. Frequency 30003649 30003663 + = +5V, V − = −5V Small Signal Frequency Response 30003651 ...

Page 10

Frequency Response vs. V Gain Flatness Pulse Response www.national.com Frequency Response vs. Supply Voltage OUT 30003653 Gain Flatness, Dual Input Buffer 30003654 30003657 10 30003616 30003655 Pulse Response 30003658 ...

Page 11

Distortion vs. Frequency 30003645 DC Errors vs. Temperature 30003656 Distortion vs. Output Voltage Crosstalk vs. Frequency 11 30003646 30003659 www.national.com ...

Page 12

... Ground FIGURE 3. Recommended Split Supply Inverting Gain SINGLE SUPPLY APPLICATION The LMH6734 can also be configured for single supply appli- cations as shown in Figure 4, Figure 5, and Figure 6. In Figure 4, the 220 μF capacitor was chosen to satisfy low frequency input signals and to provide an open for the internal feedback network path, thus setting the gain to +1 V/V. With an AC sig- nal present, this 220 μ ...

Page 13

... Gain Circuit, Gain = +1 V/V FIGURE 6. Recommended Single Supply Inverting Gain Circuit, Gain = −1 V/V The gain of the LMH6734 is accurate to ±1% and stable over temperature. The internal gain setting resistors, R match very well. However, over process and temperature their absolute value will change. Using external resistors in ...

Page 14

... Figure 12, shows F G the LMH6734 transceiver frequency response over various lengths of CAT5 cable with voltage. The CMRR of the LMH6734 receive side at low fre- quencies best with a split power supply of ±5V. 14 input signal at ±5 supply 30003665 ...

Page 15

... Therefore utmost importance to make sure that the T due to the overall power dissipation (all three channels). With the LMH6734 used in a back-terminated 75Ω RGB ana- log video system (with 2 V dissipation is around 305 mW of which 220 mW is due to the quiescent device dissipation (output black level at 0V) ...

Page 16

... Body Model and 200V Machine Model events. Under closed loop operation the ESD diodes have no affect on circuit performance. There are occasions, however, when the ESD diodes will be evident. If the LMH6734 is driven by a large signal while the device is powered down the ESD diodes will conduct. ...

Page 17

Physical Dimensions inches (millimeters) unless otherwise noted 16-Pin SSOP NS Package Number MQA16 17 www.national.com ...

Page 18

... National Semiconductor and the National Semiconductor logo are registered trademarks of National Semiconductor Corporation. All other brand or product names may be trademarks or registered trademarks of their respective holders. ...

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