CLC1007 datasheet(17/27 Pages) EXAR

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Rev 1D

CLC1007, CLC2007, CLC4007

Application Information

General Description

The CLC1007, CLC2007, and CLC4007 are single supply,

general purpose, voltage-feedback amplifiers fabricated on

a complementary bipolar process using a patent pending

topography. They feature a rail-to-rail output stage and is

unity gain stable. Both gain bandwidth and slew rate are

insensitive to temperature.

The common mode input range extends to 300mV below

ground and to 0.9V below Vs. 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.

The design is short circuit protected and offers “soft”

saturation protection that improves recovery time.

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

Overdrive Recovery

For an amplifier, an overdrive condition occurs when the

output and/or input ranges are exceeded. The recovery time

varies based on whether the input or output is overdriven

and by how much the ranges are exceeded. The CLC1007,

CLC2007, and CLC4007 will typically recover in less than

20ns from an overdrive condition. Figure 5 shows the

CLC2007 in an overdriven condition.

-6

-4

-2

100

200

300

400

500

600

700

800

900 1,000

Time (ns)

Vs = +/-5V_RL=2K_AV=+5

INPUT

OUTPUT

Figure 5: Overdrive Recovery

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