LMH6515 Datasheet, PDF (15/18 Pages) National Semiconductor (TI) – 600 MHz, Digital Controlled, Variable Gain Amplifier

POWER SUPPLIES
As shown in Figure 8, the LMH6515 has a number of options
for power supply connections on the output pins. Pin 3 (V_CC)
is always connected. The output stage can be connected as
shown in Figure 9, Figure 10, or Figure 11. The supply voltage
range for V_CC is 4V to 5.25V. A 5V supply provides the best
performance while lower supplies will result in less power
consumption. Power supply regulation of 2.5% or better is
advised.
Of special note is that the digital circuits are powered from an
internal supply voltage of 3.3V. The logic pins should not be
driven above the absolute maximum value of 3.6V. See the
Digital Control section for details.
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FIGURE 10. Using Low Gain Mode (200Ω Load)
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FIGURE 8. Internal Load Resistors
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FIGURE 11. Alternate Connection for Low Gain Mode
(200Ω Load)
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FIGURE 9. Using High Gain Mode (400Ω Load)
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