LM4875M datasheet(2/13 Pages) NSC

2 / 13 page

Absolute Maximum Ratings (Note 2)

If Military/Aerospace specified devices are required,

please contact the National Semiconductor Sales Office/

Distributors for availability and specifications.

Supply Voltage

6.0V

Storage Temperature

−65˚C to +150˚C

Input Voltage

−0.3V to V

+0.3V

Power Dissipation (Note 3)

Internally Limited

ESD Susceptibility (Note 4)

2000V

ESD Susceptibility (Note 5)

200V

Junction Temperature

150˚C

Soldering Information

Vapor Phase (60 sec.)

215˚C

Infrared (15 sec.)

220˚C

Thermal Resistanc

JC (SOP)

35˚C/W

JA (SOP)

150˚C/W

JC (MSOP)

56˚C/W

JA (MSOP)

190˚C/W

Operating Ratings

Temperature Range

MIN

≤ T

MAX

−40˚C

≤ T

≤ +85˚C

Supply Voltage

2.7V

≤ V

≤ 5.5V

See AN-450 “Surface Mounting and their Effects on Product

Reliability” for other methods of soldering surface mount

devices.

Electrical Characteristics (Notes 1, 2)

The following specifications apply for V

DD = 5V, unless otherwise specified. Limits apply for TA = 25˚C.

Symbol

Parameter

Conditions

LM4875

Min

(Note 7)

Typical

(Note 6)

Max

(Note 7)

Units

Supply Voltage

2.7

5.5

Quiescent Power Supply

Current

IN = 0V, IO = 0A, HP Sense = 0V

IN = 0V, IO - 0A, HP Sense = 5V

3.5

Shutdown Current

PIN4

≤ 0.3V

0.7

µA

Output Offset Voltage

IN = 0V

Output Power

THD = 1% (max), HP Sense < 0.8V,

f = 1kHz, R

L =8

Ω

500

750

THD = 10% (max), HP Sense < 0.8V,

f = 1kHz, R

L =8

Ω

1.0

THD+N=1%, HP Sense > 4V,

f = 1kHz, R

L =32

Ω

THD = 10%, HP Sense > 4V,

f = 1kHz, R

L =32

Ω

110

THD+N

Total Harmonic Distortion +

Noise

O = 300 mWrms, f = 20Hz–20kHz,

L =8

Ω

0.6

PSRR

Power Supply Rejection Ratio

RIPPLE = 200mVrms, RL =8

Ω,C

B =

1.0 µF, f = 1kHz

Gain

RANGE

Single-Ended Gain Range

Gain with V

PIN4

≥ 4.0V, (80% of V

DD)

18.8

Gain with V

PIN4

≤ 0.9V, (20% of V

DD)

−70

−72

HP Sense High Input Voltage

HP Sense Low Input Voltage

0.8

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

that guarantee specific performance limits. This assumes that the device operates within the Operating Ratings. Specifications are not guaranteed for parameters

where no limit is given. The typical value, however, is a good indication of device performance.

Note 3: The maximum power dissipation must be derated at elevated temperatures and is dictated by TJMAX, θJA, and the ambient temperature TA. The maximum

allowable power dissipation is PDMAX =(TJMAX −TA)/θJA or the number given in the Absolute Maximum Ratings, whichever is lower. For the LM4875M, TJMAX =

150˚C.

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: The quiescent power supply current depends on the offset voltage when a practical load is connected to the amplifier.

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