External Components Description

See Figure 1.

Components

Functional Description

1.

R

i

This is the inverting input resistance that, along with R

input capacitance C

πR

2.

C

i

This is the input coupling capacitor. It blocks DC voltage at the amplifier’s inverting input. C

highpass filter. The filter’s cutoff frequency is f

πR

SELECTING EXTERNAL COMPONENTS, for an explanation of determining C

3.

R

f

This is the feedback resistance that, along with R

4.

C

s

The supply bypass capacitor. Refer to the POWER SUPPLY BYPASSING section for information about

properly placing, and selecting the value of, this capacitor.

5.

C

B

This capacitor filters the half-supply voltage present on the BYPASS pin. Refer to the Application

Information section, SELECTING EXTERNAL COMPONENTS, for information about properly placing, and

selecting the value of, this capacitor..

Typical Performance Characteristics

THD+N vs Frequency

THD+N vs Frequency

200382D8

LM4854LD

V

Ω (BTL),

P

200382D9

LM4854LD

V

Ω (BTL),

P

THD+N vs Frequency

THD+N vs Frequency

200382C0

V

Ω (BTL),

P

200382B8

V

Ω (SE),

P

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