CLC5612IM datasheet(12/18 Pages) NSC

12 / 18 page

Application Division (Continued)

Operating from a single +5V supply, the Common Mode

Input Range (CMIR) of the CLC5612 is typically +0.8V to

+4.2V. The typical output range with R

L=100Ω is +1.0V to

+4.0V.

For single supply DC coupled operation, keep input signal

levels above 0.8V DC. For input signals that drop below 0.8V

DC, AC

coupling

and

level

shifting

the

signal

are

recommended. The non-inverting and inverting configura-

tions for both input conditions are illustrated in the following

sections.

DC Coupled Single Supply Operation

Figure 1, Figure 2, and Figure 3 on the following page, show

the recommended configurations for input signals that

remain above 0.8V DC.

AC Coupled Single Supply Operation

Figure 4, Figure 5, and Figure 6 show possible non-inverting

and inverting configurations for input signals that go below

0.8V DC.

The input is AC coupled to prevent the need for level shifting

the input signal at the source. The resistive voltage divider

biases the non-inverting input to V

CC2 = 2.5V (For VCC =

+5V).

Ω

CLC5612

0.1

µF

6.8

µF

Vin

Vcm

VCC

Vcm

Note: Rb provides DC bias for the non-inverting input.

Rb, RL and Rt are tied to Vcm for minimum power

consumption and maximum output swing.

Channel 2 not shown.

Vcm

Select Rt to yield desired Rin = Rt||Rg, where Rg = 1kΩ.

DS015001-39

FIGURE 1. DC Coupled, A

V = -1V/V Configuration

Ω

CLC5612

Vcm

0.1

µF

6.8

µF

Vin

Vcm

VCC

Note: Rt and RL are tied to Vcm for minimum power

consumption and maximum output swing.

Channel 2 not shown.

DS015001-40

FIGURE 2. DC Coupled, A

V = +1V/V Configuration

Ω

CLC5612

Vcm

0.1

µF

6.8

µF

Vin

Vcm

VCC

Note: Rt, RL and Rg are tied to Vcm for minimum power

consumption and maximum output swing.

Channel 2 not shown.

Vcm

DS015001-41

FIGURE 3. DC Coupled, A

V = +2V/V Configuration

Ω

CLC5612

0.1

µF

6.8

µF

Vin

VCC

2.5

Low frequency cutoff

2R C

g C

=−

where Rg = 1kΩ.

Note: Channel 2 not shown.

DS015001-42

FIGURE 4. AC Coupled, A

V = -1V/V Configuration

Ω

CLC5612

0.1

µF

6.8

µF

Vin

VCC

Note: Channel 2 not shown.

2.5

Low frequency cutoff

2R C

where R

in C

source

=>>

DS015001-43

FIGURE 5. AC Coupled, A

V = +1V/V Configuration

2.5

Low frequency cutoff

2R C

where R

in C

source

=>>

Ω

CLC5612

0.1

µF

6.8

µF

Vin

VCC

Note: Channel 2 not shown.

DS015001-44

FIGURE 6. AC Coupled, A

V = +2V/V Configuration

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