2

3

4

6

1

+

-

+5V

-5V

6.8 µF

.01 µF

6.8 µF

.01 µF

0.1 µF

LMH6704

2

3

4

6

1

+

-

+5V

-5V

6.8 µF

.01 µF

6.8 µF

.01 µF

0.1 µF

LMH6704

2

3

4

6

1

+

-

+5V

-5V

6.8 µF

.01 µF

6.8 µF

.01 µF

0.1 µF

LMH6704

NC

LMH6704

SNOSAD0C – FEBRUARY 2005 – REVISED MARCH 2013

www.ti.com

APPLICATION INFORMATION

Figure 17. Recommended Gain of +2 Circuit

Figure 18. Recommended Gain of +1 Circuit

Figure 19. Recommended Gain of

−1 Circuit

GENERAL INFORMATION

The LMH6704 is a high speed current feedback Selectable Gain Buffer (SGB), optimized for very high speed and

low distortion. With its internal feedback and gain-setting resistors the LMH6704 offers excellent AC performance

while simplifying board layout and minimizing the affects of layout related parasitic components. The LMH6704

has no internal ground reference so single or split supply configurations are both equally useful.

SETTING THE CLOSED LOOP GAIN

Table 1.

Input Connections

Non-Inverting (Pin 3, SOT-23)

Inverting (Pin 4, SOT-23)

−1 V/V

Ground

Input Signal

+1 V/V

Input Signal

NC (Open)

+2 V/V

Input Signal

Ground

The gain accuracy of the LMH6704 is accurate over temperature to within ±1%. The internal gain setting

gain setting resistors track each other well over a wide range of temperature and process variation to keep the

overall gain constant, despite the fact that the individual resistors have nominal temperature drifts. Therefore,

8

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