Electrical Characteristics V

The following specifications apply for V

Symbol

Parameter

Conditions

LM4820-6

Units

Typical

Limit

(Note 6)

(Note 7)

I

DD

Quiescent Power Supply Current

V

2.6

mA (max)

I

SD

Shutdown Current

V

0.1

µA (max)

P

0

Output Power ( 8

Ω )

Output Power ( 4

Ω )

THD = 1% (max);f=1kHz THD

= 1% (max);f=1kHz

0.2

0.4

W

W

THD+N

Total Harmonic Distortion+Noise

P

0.08

%

PSRR

Power Supply Rejection Ratio

V

44 (f =

217Hz)

44 (f =

1kHz)

dB

A

V

Fixed Voltage Gain

.5V

6.0

dB

Note 1: All voltages are measured with respect to the ground pin, unless otherwise specified.

Note 2:

functional, but do not guarantee specific performance limits.

guarantee specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not guaranteed for parameters where no limit

is given, however, the typical value is a good indication of device performance.

derating curves for additional information.

Note 4: Human body model, 100 pF discharged through a 1.5 k

Ω resistor.

Note 5: Machine Model, 220 pF–240 pF discharged through all pins.

Note 6: Typicals are measured at 25˚C and represent the parametric norm.

Note 7: Limits are guaranteed to National’s AOQL (Average Outgoing Quality Level).

Components

Functional Description

2.

C

i

Input coupling capacitor which blocks the DC voltage at the amplifiers input terminals. Also creates a

highpass filter with R

for an explanation of how to determine the value of C

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

THD+N vs Frequency

at V

DS200106-37

THD+N vs Frequency

at V

DS200106-38

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