Electrical Characteristics V

The following specifications apply for A

Ω + 15µH, f = 1kHz unless otherwise specified. Limits apply for

Symbol

Parameter

Conditions

LM4674A

Units

(Limits)

Typical

Limit

(Note 6)

(Note 7)

P

O

Output Power

R

Ω + 15µH, THD = 10%

f = 1kHz, 22kHz BW

V

2.5

W

V

1.2

W

V

0.530

W

R

Ω + 15µH, THD = 10%

f = 1kHz, 22kHz BW

V

1.5

W

V

0.78

0.6

W

V

0.350

W

R

Ω + 15µH, THD = 1%

f = 1kHz, 22kHz BW

V

1.9

W

V

1

W

V

0.430

W

R

Ω + 15µH, THD = 1%

f = 1kHz, 22kHz BW

V

1.25

W

V

0.63

W

V

0.285

W

THD+N

Total Harmonic Distortion

P

Ω

0.07

%

P

Ω

0.05

%

PSRR

Power Supply Rejection Ratio

V

f

= 1µF, input referred

75

dB

V

f

1µF, input referred

75

dB

CMRR

Common Mode Rejection Ratio

V

f

67

dB

η

Efficiency

P

R

Ω,V

85

%

Crosstalk

P

84

dB

SNR

Signal to Noise Ratio

V

96

dB

e

OS

Output Noise

Input referred, A-Weighted Filter

20

µV

Note 1: All voltages are measured with respect to the ground 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.

derating currents for more information.

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).

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