LM4663MT datasheet(3/10 Pages) NSC

3 / 10 page

Electrical Characteristics (Notes 1, 2, 7) (Continued)

The following specifications apply for V

DD = 5V, RL = 4Ω, LC filter values as shown in Figure 1, unless otherwise specified.

Limits apply for T

A = 25˚C.

Symbol

Parameter

Conditions

LM4663

Units

Typical

Max

Min

Headphone Amplifiers

Power Out Per Channel

THD+N

≤ 1%,R

L = 32Ω,fIN =

1kHz

THD+N

Distortion + Noise

O = 20mW, RL = 32Ω,fIN =

1kHz

0.15

NOISE

Output Noise Voltage, RMS

IN = 50Ω,CIN = 1µF, BW =

8Hz to 22kHz

µV

PSRR

Power Supply Rejection Ratio

(Referred to Input)

200mV, 1kHz, V

IN = 0, RL =

Ω

Voltage Gain

1kHz, V

IN = 100mV, RL = 32Ω

5.5

VL−AVR

Stereo Gain Tracking

1kHz, V

IN = 100mV, RL = 32Ω

0.1

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.

Note 3: For operating at case temperatures above 25˚C, the device must be derated based on a 150˚C maximum junction temperature and a thermal resistance of

θJA = 80˚C/W (junction to ambient).

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

Ω resistor.

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

Note 6: The operating junction temperature maximum is 150˚C.

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

Typical Performace Characteristics

Efficiency vs Output Power

DS101269-10

Power Dissipation vs Output Power

DS101269-11

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