CLC2011ISO8EVB datasheet(9/17 Pages) EXAR

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exar.com/CLC2011

Rev 1D

CLC2011, CLC4011

Application Information

General Description

The CLCx011 family of amplifiers are single supply, general

purpose, voltage-feedback amplifiers. They are fabricated

on a complimentary bipolar process, feature a rail-to-rail

input and output, and are unity gain stable.

Basic Operation

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 applications.

0.1 F

6.8 F

Output

G = 1 + (Rf/Rg)

Input

+Vs

-Vs

0.1 F

6.8 F

Figure 1: Typical Non-Inverting Gain Circuit

0.1 F

6.8 F

Output

G = - (Rf/Rg)

For optimum input offset

voltage set R1 = Rf || Rg

Input

+Vs

-Vs

0.1 F

6.8 F

Figure 2: Typical Inverting Gain Circuit

0.1 F

6.8 F

Output

G = 1

Input

+Vs

-Vs

0.1 F

6.8 F

Figure 3: Unity Gain Circuit

0.1F

6.8F

Out

+Vs

Figure 4: Single Supply Non-Inverting Gain Circuit

Power Dissipation

Power dissipation should not be a factor when operating

under the stated 10kΩ load condition. However, applications

with low impedance, DC coupled loads should be analyzed

to ensure that maximum allowed junction temperature is

not exceeded. Guidelines listed below can be used to verify

that the particular application will not cause the device to

operate beyond it’s intended operating range.

Maximum power levels are set by the absolute maximum

junction rating of 150°C. To calculate the junction

temperature, the package thermal resistance value ThetaJA

(θJA) is used along with the total die power dissipation.

TJunction = TAmbient + (θJA × PD)

Where TAmbient is the temperature of the working

environment.

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