LMH6514 Datasheet, PDF (20/31 Pages) National Semiconductor (TI) – 600 MHz, Digital Controlled, Variable Gain Amplifier

LMH6514
SNOSB06A – JANUARY 2008 – REVISED MARCH 2013
5V
AMP V_OUT -
L1
L3
C1
L5
ADC V_IN +
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AMP V_OUT +
C2
L4
L2
5V
Figure 51. Sample Filter
ADC V_IN -
ADC V_CM
POWER SUPPLIES
As shown in Figure 52, the LMH6514 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 53, Figure 54, and
Figure 55. 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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