CLC2011 CADEKA [Cadeka Microcircuits LLC.], CLC2011 Datasheet - Page 10

• Manufacturer Part Number: CLC2011
• Description: Low Power, Low Cost, Rail-to-Rail I/O Amplifiers
• Manufacturer: CADEKA [Cadeka Microcircuits LLC.]

Advance Data Sheet
The dynamic power is focused primarily within the output
stage driving the load. This value can be calculated as:
P
Assuming the load is referenced in the middle of the pow-
er rails or V
Figure 4 shows the maximum safe power dissipation in
the package vs. the ambient temperature for the pack-
ages available.
Input Common Mode Voltage
The common mode input range extends to 250mV below
ground and to 250mV above Vs, in single supply opera-
tion. Exceeding these values will not cause phase reversal.
However, if the input voltage exceeds the rails by more
than 0.5V, the input ESD devices will begin to conduct. The
output will stay at the rail during this overdrive condition.
If the absolute maximum input voltage (700mV beyond ei-
ther rail) is exceeded, externally limit the input current to
±5mA as shown in Figure 5.
Driving Capacitive Loads
Increased phase delay at the output due to capacitive load-
ing can cause ringing, peaking in the frequency response,
©2009 CADEKA Microcircuits LLC
DYNAMIC
Input
Figure 5. Circuit for Input Current Protection
10k
= (V
Figure 4. Maximum Power Derating
supply
S+
/2.
- V
LOAD
)
RMS
× ( I
LOAD
)
RMS
Output
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 6.
Table 1 provides the recommended R
tive loads. The recommended R
mately <1dB peaking in the frequency response. The Fre-
quency Response vs. C
response of the CLCx011.
For a given load capacitance, adjust R
tradeoff between settling time and bandwidth. In general,
reducing R
ditional overshoot and ringing.
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 CLCx011 will typically recover in less
than 50ns from an overdrive condition. Figure 7 shows the
CLC1011 in an overdriven condition.
Input
C
100pF
10pF
20pF
50pF
L
(pF)
R
g
S
Figure 6. Addition of R
+
-
Table 1: Recommended R
will increase bandwidth at the expense of ad-
R
f
R
Capacitive Loads
100
S
0
0
0
(Ω)
L
R
s
plot, on page 6, illustrates the
C
L
S
values result in approxi-
-3dB BW (kHz)
S
for Driving
R
S
L
S
2.2
2.4
2.5
for various capaci-
vs. C
2
S
www.cadeka.com
Output
to optimize the
L
10
S
,