Electrical Characteristics V

The following specifications apply for V

Ω,C

Ω,R

Ω unless

otherwise specified. Limits apply for T

Symbol

Parameter

Conditions

LM4802B

Units

(Limits)

Typical

(Note 6)

Limit

(Notes 7, 8)

THD+N

Total Harmomic Distortion + Noise

V

0.05

1

% (max)

e

OS

Output Noise

A-Weighted Filter, V

105

µV

PSRR

Power Supply Rejection Ratio

V

66

dB (min)

V

FB

Feedback Pin Reference Voltage

(Note 11)

1.23

1.205

1.255

V (max)

V (min)

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

Note 2: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is

functional, but do not guarantee specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which

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.

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

Ω resistor.

Note 5: Machine Model, 220pF–240pF 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).

Note 8: Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis.

current.

Note 10: Shutdown current is measured with components R1 and R2 removed.

Note 11: Feedback pin reference voltage is measured with the Audio Amplifier’s V1 (pin 26) floating and no addition load connected to the cathode of D1 (see Figure

1).

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