Datasheet

V
OUT
+
-
V
IN
+2.5V
-2.5V
C
POS
6.8 PF
R
G
R
F
0.1 PF
6.8 PF
C
NEG
0.1 PF
R
T
25:
0.01 PF
C
SS
SELECT R
T
TO
YIELD DESIRED
R
IN
= R
T
||R
G
A
V
=
V
OUT
V
IN
R
F
R
G
=
-
V
OUT
+
-
V
IN
+2.5V
-2.5V
C
POS
6.8 PF
R
G
R
F
0.1 PF
6.8 PF
C
NEG
0.1 PF
R
IN
0.01 PF
C
SS
A
V
= 1 +R
F
/R
G
= V
OUT
/V
IN
LMH6733
SNOSAW0D –JANUARY 2007–REVISED MAY 2013 www.ti.com
APPLICATION INFORMATION
Figure 34. Recommended Non-Inverting Gain Circuit
Figure 35. Recommended Inverting Gain Circuit
General Information
The LMH6733 is a high speed current feedback amplifier, optimized for very high speed and low distortion. The
LMH6733 has no internal ground reference so single or split supply configurations are both equally useful.
Feedback Resistor Selection
One of the key benefits of a current feedback operational amplifier is the ability to maintain optimum frequency
response independent of gain by using the appropriate values for the feedback resistor (R
F
). The Electrical
Characteristics and Typical Performance plots specify an R
F
of 340Ω, a gain of +2 V/V and ±2.5V power supplies
(unless otherwise specified). Generally, lowering R
F
from its recommended value will peak the frequency
response and extend the bandwidth while increasing the value of R
F
will cause the frequency response to roll off
faster. Reducing the value of R
F
too far below its recommended value will cause overshoot, ringing and,
eventually, oscillation.
12 Submit Documentation Feedback Copyright © 2007–2013, Texas Instruments Incorporated
Product Folder Links: LMH6733