External Components Description

(

Figure 1 )

Components

Functional Description

1.

R

i

Inverting input resistance which sets the closed-loop gain in conjunction with R

high pass filter with C

2.

C

i

Input coupling capacitor which blocks the DC voltage at the amplifier’s input terminals. Also creates a

highpass filter with R

for an explanation of how to determine the value of C

3.

R

f

Feedback resistance which sets the closed-loop gain in conjunction with R

4.

C

s

Supply bypass capacitor which provides power supply filtering. Refer to the Power Supply Bypassing

section for information concerning proper placement and selection of the supply bypass capacitor.

5.

C

B

Bypass pin capacitor which provides half-supply filtering. Refer to the section, Proper Selection of

External Components, for information concerning proper placement and selection of C

Typical Performance Characteristics

MTE (20 pin)Specific Characteristics

Note 20: These curves show the thermal dissipation ability of the LM4873MTE at different ambient temperatures given these conditions:

500LFPM + JEDEC board: The part is soldered to a 1S2P 20-lead exposed-DAP TSSOP test board with 500 linear feet per minute of forced-air flow across

it. Board information - copper dimensions: 74x74mm, copper coverage: 100% (buried layer) and 12% (top/bottom layers), 16 vias under the exposed-DAP.

Not Attached: The part is not soldered down and is not forced-air cooled.

LM4873MTE

THD+N vs Output Power

DS100993-33

LM4873MTE

THD+N vs Frequency

DS100993-34

LM4873MTE

THD+N vs Frequency

DS100993-36

LM4873MTE

Power Dissipation vs Power Output

DS100993-90

LM4873MTE(Note 20)

Power Derating Curve

DS100993-95

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