Data Sheet
Application Information
+Vs
6.8uF
0.1uF
General Description
The CLC1008 family are a single supply, general purpose,
voltage-feedback amplifiers fabricated on a complementary
bipolar process. The CLC1008 offers 75MHz unity gain
bandwidth, 50V/μs slew rate, and only 505μA supply current.
It features a rail-to-rail output stage and is unity gain stable.
Input
+
Output
-
RL
0.1uF
6.8uF
Figures 1, 2, and 3 illustrate typical circuit configurations for
non-inverting, inverting, and unity gain topologies for dual
supply applications. They show the recommended bypass
capacitor values and overall closed loop gain equations.
Figure 4 shows the typical non-inverting gain circuit for
single supply applicaitons.
G = 1
-Vs
Figure 3. Unity Gain Circuit
+Vs
The common mode input range extends to 300mV below
ground in single supply operation. 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.
6.8μF
+
0.1μF
In
+
-
Out
Rf
The design uses a Darlington output stage. The output
stage is short circuit protected and offers “soft” saturation
protection that improves recovery time.
Rg
+Vs
6.8μF
Figure 4. Single Supply Non-Inverting Gain Circuit
0.1μF
Input
+
-
Output
For optimum response at a gain of +2, a feedback resistor
of 1kΩ is recommended. Figure 5 illustrates the CLC1008
frequency response with both 1kΩ and 2kΩ feedback
resistors.
RL
0.1μF
6.8μF
Rf
Rg
G = 1 + (Rf/Rg)
-Vs
G = 2
R = 1kΩ
R = 2kΩ
f
Figure 1. Typical Non-Inverting Gain Circuit
L
+Vs
R = 1kΩ
f
6.8μF
R1
0.1μF
+
Output
Rg
Input
-
RL
0.1μF
6.8μF
Rf
0.1
1
10
100
G = - (Rf/Rg)
Frequency (MHz)
-Vs
For optimum input offset
voltage set R1 = Rf || Rg
Figure 5. Frequency Response vs. R
f
Figure 2. Typical Inverting Gain Circuit
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www.cadeka.com
10
CADEKA [ CADEKA MICROCIRCUITS LLC. ]
