LMH6551 Datasheet, PDF (21/32 Pages) National Semiconductor (TI) – Differential, High Speed Op Amp

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Typical Applications (continued)
LMH6551
SNOSAK7D – FEBRUARY 2005 – REVISED JANUARY 2015
100: TWISTED PAIR
375
200: 2:1 (TURNS)
375
+
a 4 VPP
V_CM
-
375
375
A_V = 1
V_CM
200:
1 V_PP
R_L = 100:
Figure 34. Transformer Out Low-Impedance Load
50: COAX
375
100: 2:1 (TURNS)
375
+
a 4 VPP
V_CM
-
375
375
C₁
100:
1 V_PP
GAIN = 1
C₁ IS NOT REQUIRED IF V_CM = GROUND
Figure 35. Driving 50-Ω Test Equipment
10 Power Supply Recommendations
The LMH6551 can be used with any combination of positive and negative power supplies as long as the
combined supply voltage is between 4.5 V and 12 V. The LMH6551 will provide best performance when the
output voltage is set at the mid supply voltage, and when the total supply voltage is between 9 V and 12 V.
When selecting a supply voltage that is less than 9 V, it is important to consider both the input common-mode
voltage range as well as the output voltage range.
Power supply bypassing as shown in Figure 25 and Figure 26 is important and power supply regulation should
be within 5% or better when using a supply voltage near the edges of the operating range.
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