Data Sheet
(V
)
= V
/ √2
LOAD RMS
PEAK
C (pF)
L
R (Ω)
S
-3dB BW (kHz)
( I
)
= ( V
)
/ Rload
LOAD RMS
LOAD RMS eff
1nF
5nF
0
0
0
0
485
390
260
440
The dynamic power is focused primarily within the output
stage driving the load. This value can be calculated as:
10nF
100
P
= (V - V
)
× ( I )
LOAD RMS
DYNAMIC
S+
LOAD RMS
Assuming the load is referenced in the middle of the pow-
er rails or V /2.
supply
Table 1: Recommended R vs. C
S
L
Figure 4 shows the maximum safe power dissipation in
the package vs. the ambient temperature for the pack-
ages available.
For a given load capacitance, adjust R to optimize the
tradeoff between settling time and bandwidth. In general,
S
reducing R will increase bandwidth at the expense of ad-
S
ditional overshoot and ringing.
2.5
SOIC-16
2
Overdrive Recovery
An overdrive condition is defined as the point when ei-
ther one of the inputs or the output exceed their specified
voltage range. Overdrive recovery is the time needed for
the amplifier to return to its normal or linear operating
point. The recovery time varies, based on whether the
input or output is overdriven and by how much the range
is exceeded. The CLCx050 will typically recover in less
than 30ns from an overdrive condition. Figure 6 shows the
CLC1050 in an overdriven condition.
1.5
SOT23-6
1
0.5
SOT23-5
0
-40
-20
0
20
40
60
80
Ambient Temperature (°C)
Figure 4. Maximum Power Derating
4
3.5
3
4
VIN = 1.25Vpp
G = 5
3.5
3
Driving Capacitive Loads
Input
2.5
2
2.5
2
Increased phase delay at the output due to capacitive load-
ing can cause ringing, peaking in the frequency response,
and possible unstable behavior. Use a series resistance, R ,
between the amplifier and the load to help improve stability
and settling performance. Refer to Figure 5.
1.5
1
1.5
1
Output
S
0.5
0
0.5
0
-0.5
-0.5
Input
+
-
Rs
0
20
40
60
80
100
Output
Time (us)
CL
RL
Rf
Figure 6. Overdrive Recovery
Rg
Figure 5. Addition of R for Driving
S
Capacitive Loads
Table 1 provides the recommended R for various capaci-
S
tive loads. The recommended R values result in <=1dB
S
peaking in the frequency response. The Frequency Re-
sponse vs. C plot, on page 6, illustrates the response of
L
the CLCx050.
©2007-2009 CADEKA Microcircuits LLC
www.cadeka.com
11
CADEKA [ CADEKA MICROCIRCUITS LLC. ]
