LMH1981MT National Semiconductor Corporation, LMH1981MT Datasheet - Page 3

• Manufacturer Part Number: LMH1981MT
• Manufacturer: National Semiconductor Corporation

Note 5: Typical values represent the most likely parametric norm at the time of characterization. Actual typical values may vary over time and will also depend on
the application and configuration. The typical values are not tested and are not guaranteed on shipped production material.
Note 6: Limits are 100% production tested at 25˚C. Limits over the operating temperature range are guaranteed through correlations using the Statistical Quality
Control (SQC) method.
Note 7: All voltages are measured with respect to GND, unless otherwise specified.
Note 8: V
plus V
should not exceed V
.
IN-AMPL
IN-CLAMP
S
Note 9: Outputs are negative-polarity logic signals, except for composite sync, odd/even field, and video format outputs.
LMH1981 Test Circuit
20174502
FIGURE 2. Test Circuit
The LMH1981 test circuit is shown in Figure 2. The video generator should provide a low-noise, broadcast-quality signal over 75Ω
coaxial cable which should be impedance-matched with a 75Ω load termination resistor to prevent unwanted signal distortion.
The output waveforms should be monitored using a low-capacitance probe on an oscilloscope with at least 500 MHz bandwidth.
See the PCB LAYOUT CONSIDERATIONS section for more information about signal and supply trace routing and component
placement.
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