CLC411AJP National Semiconductor, CLC411AJP Datasheet - Page 8

• Manufacturer Part Number: CLC411AJP
• Description: IC OP AMP HI SPEED VIDEO 8-DIP
• Manufacturer: National Semiconductor

Specifications of CLC411AJP

• Applications: Current Feedback
• Number Of Circuits: 1
• -3db Bandwidth: 200MHz
• Slew Rate: 2300 V/µs
• Current - Supply: 11mA
• Current - Output / Channel: 70mA
• Mounting Type: Through Hole
• Package / Case: 8-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: *CLC411AJP

www.national.com
Differential Gain and Phase
The differential gain and phase errors of the CLC411 driving
one doubly-terminated video load (R
and guaranteed in the Electrical Characteristics table. The
(4.43MHz) shows the differential gain and phase perfor-
mance of the CLC411 when driving from one to four video
loads. Application note OA-08, Differential Gain and Phase
for Composite Video Systems, describes in detail the tech-
niques used to measure differential gain and phase.
Feedback Resistor
The loop gain and frequency response for a current feed-
back operational amplifier is determined largely by the feed-
back resistor, R
performance plots contained within the datasheet, unless
otherwise stated, specify an R
operation with a
sponse at different gain settings and supply voltages can be
optimized by selecting a different value of R
lowering R
bandwidth while increasing its value will roll off the response.
For unity gain voltage follower circuits, a non-zero R
be used with current feedback operational amplifiers such as
the CLC411. Application note OA-13, Current-Feedback
Loop-Gain Analysis and Performance Enhancements, ex-
plains the ramifications of R
Typical Performance plot, Differential Gain and Phase
FIGURE 3. Recommended Inverting Gain Circuit
FIGURE 4. Recommended R
f
will peak the frequency response and extend the
f
. The electrical characteristics and typical
±
15V power supplies. The frequency re-
f
f
and how to use it to tailor the
, of 301 , a gain of +2V/V and
L
=150 ) are specified
f
vs. Gain
01271722
01271721
f
. Generally,
f
must
8
desired frequency response with respect to gain. The equa-
tions found in the application note should be considered as a
starting point for the selection of R
factor in the effects of parasitic capacitance found on the
inverting input, the output nor across the feedback resistor.
Equations in OA-13 require values for R (301 ), Av(+2) and
R
yields a Z
Figure 4 entitled Recommended R
selection of the feedback resistor that provides a maximally
flat frequency response for the CLC411 over its gain range.
The linear portion of the two curves (i.e. A
the limitation on R
i
(inverting input resistance, 50 ). Combining these values
FIGURE 6. Differential ECL Interface
t
(optimum feedback transimpedance) of 400 .
FIGURE 5. Disable Interface
FIGURE 7. ECL Interface
g
(i.e. R
g
50 ).
f
f
vs. Gain will enable the
. The equations do not
V
>
01271724
4) results from
01271725
01271723