If Military/Aerospace specified devices are required,

please contact the National Semiconductor Sales Office/

Distributors for availability and specifications.

Supply Voltage

40V

Input Voltage

Output Current

Internally Limited

Power Dissipation (Note 3)

62.5W

ESD Susceptability (Note 4)

2 kV

Junction Temperature

150˚C

Soldering Information

T Package (10 seconds)

250˚C

Storage Temperature

−40˚C to 150˚C

Operating Ratings

Temperature Range

T

−40˚C

≤ T

Supply Voltage

9V to 32V

θ

JC

2˚C/W

θ

JA

76˚C/W

Electrical Characteristics

The following specifications apply to each channel with V

Symbol

Parameter

Conditions

LM4755

Units

(Limits)

Typical

(Note 5)

Limit

I

TOTAL

Total Quiescent Power

Supply Current

Mute Off

10

15

mA(max)

7

mA(min)

Mute On

7

mA

P

O

Output Power (Continuous

Average per Channel)

f = 1 kHz, THD+N = 10%,R

7W

f = 1 kHz, THD+N = 10%,R

11

10

W(min)

V

4W

V

7W

f = 1 kHz, THD+N = 10%,R

V

2.5

W

THD

Total Harmonic Distortion

f = 1 kHz, P

0.08

%

V

OSW

Output Swing

P

15

V

P

14

V

X

TALK

Channel Separation

See Apps. Circuit

55

dB

f = 1 kHz, V

PSRR

Power Supply Rejection Ratio

See Apps. Circuit

50

dB

f = 120 Hz, V

V

ODV

Differential DC Output Offset

Voltage

V

0.09

0.4

V(max)

SR

Slew Rate

2

V/µs

R

IN

Input Impedance

83

k

Ω

PBW

Power Bandwidth

3 dB BW at P

65

kHz

A

VCL

Closed Loop Gain

(Internally Set)

R

34

33

dB(min)

35

dB(max)

e

IN

Noise

IHF-A Weighting Filter, R

Output Referred

0.2

mVrms

I

O

Output Short Circuit Limit

V

2

A(min)

Mute Pin

V

IL

Mute Low Input Voltage

Not in Mute Mode

0.8

V(max)

V

IH

Mute High Input Voltage

In Mute Mode

2.0

2.5

V(min)

A

M

Mute Attenuation

V

80

dB

Note 1: All voltages are measured with respect to the GND pin (5), unless otherwse 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 func-

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

antee 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

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

Ω resistor.

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