LM4851 datasheet(3/22 Pages) NSC

3 / 22 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

ESD Susceptibility (Note 4)

2.0kV

ESD Machine model (Note 7)

200V

Junction Temperature (T

150˚C

Solder Information (Note 1)

Vapor Phase (60 sec.)

215˚C

Infrared (15 sec.)

220˚C

Thermal Resistance

JA (typ) - LQA24A

42˚C/W

JC (typ) - LQA24A

3.0˚C/W

JA (typ) - BLA18AAB

48˚C/W (Note 9)

JC (typ) - BLA18AAB

23˚C/W (Note 9)

JA (typ) - TLA18AAA

48˚C/W (Note 9)

JC (typ) - TLA18AAA

23˚C/W (Note 9)

Operating Ratings (Note 3)

Temperature Range

−40˚C to 85˚C

Supply Voltage V

2.6V

≤ V

≤ 5.0V

Note 1: See AN-450 "Surface Mounting and their effects on Product Reli-

ability" for other methods of soldering surface mount devices.

Electrical Characteristics (Notes 2, 8)

The following specifications apply for V

DD= 5.0V, TA= 25˚C unless otherwise specified.

Symbol

Parameter

Conditions

LM4851

Units

(Limits)

Typical

(Note 5)

Limit

(Note 6)

Supply Current

Output mode 7

IN = 0V; IO =0A

7.5

mA (max)

Output modes 1, 2, 3, 4, 5, 6

IN = 0V; IO =0A

5.0

9.0

mA (max)

Shutdown Current

Output mode 0

0.1

µA (max)

Output Offset Voltage

IN = 0V

5.0

mV (max)

Output Power

SPKR

OUT;RL =4

Ω

THD+N = 1%; f = 1kHz

LM4851LQ

1.5

SPKR

OUT;RL =8

Ω

THD+N = 1%; f = 1kHz

1.1

0.8

W (min)

OUT and LOUT;RL =32

Ω

THD+N = 0.5%; f = 1kHz

115

mW (min)

THD+N

Total Harmonic Distortion Plus

Noise

OUT and LOUT; f = 1kHz

OUT = 80mW; RL =32

Ω

0.5

% (max)

SPKR

OUT; f = 1kHz

OUT = 800mW; RL =8

Ω

1.0

% (max)

OUT and LOUT; f = 20Hz to 20kHz

OUT = 100mW; RL =32

Ω

0.3

SPKR

OUT; f = 20Hz to 20kHz

OUT = 1W; RL =4

Ω

LM4851LQ

0.3

SPKR

OUT; f = 20Hz to 20kHz

OUT = 800mW; RL =8

Ω

0.3

OUT

Output Noise

A-weighted (Note 10)

µV

PSRR

Power Supply Rejection Ratio

RIPPLE = 200mVPP; f = 217Hz

Input floating; Input referred

RIPPLE = 200mVPP; f = 217Hz

Input terminated into 50

Ω; Output referred

Logic High Input Voltage

1.4

5.0

V (min)

V (max)

Logic Low Input Voltage

0.4

V (max)

LM4851 Datasheet(PDF) 3 Page - National Semiconductor (TI)

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