LM4951ASD datasheet(5/20 Pages) NSC

5 / 20 page

Absolute Maximum Ratings (Notes 1, 2)

If Military/Aerospace specified devices are required,

please contact the National Semiconductor Sales Office/

Distributors for availability and specifications.

Supply Voltage

9.5V

Storage Temperature

−65°C to +150°C

Input Voltage

−0.3V to V

DD + 0.3V

Power Dissipation (Note 3)

Internally limited

ESD Rating (Note 4)

2000V

ESD Rating (Note 5)

200V

Junction Temperature (T

JMAX)

150°C

Thermal Resistance

JA (LLP) (Note 3)

73°C/W

Soldering Information

See AN-1187 'Leadless Leadframe

Packaging (LLP).'

Operating Ratings (Notes 1, 2)

Temperature Range

MIN ≤ TA ≤ TMAX

−40°C

≤ T

A ≤ +85°C

Supply Voltage

2.7V

≤ V

DD ≤ 9V

Electrical Characteristics V

DD = 7.5V (Notes 1, 2)

The following specifications apply for V

DD = 7.5V, AV-BTL = 6dB, RL = 8Ω unless otherwise specified. Limits apply for TA = 25°C.

Symbol

Parameter

Conditions

LM4951A

Units

(Limits)

Typical

(Note 6)

Limit

(Note 7)

Quiescent Power Supply Current

IN = 0V, IO = 0A, RL = 8Ω BTL

2.5

4.5

mA (max)

Shutdown Current

SD = GND (Note 8)

0.01

µA (max)

Output Offset Voltage

mV (max)

SDIH

Shutdown Voltage Input High

1.2

V (min)

SDIL

Shutdown Voltage Input Low

0.4

V (max)

PULLDOWN

Pull-down Resistor on SD pin

Ω (min)

Wake-up Time

B = 1.0µF

ms (max)

Shutdown time

B = 1.0µF

ms (max)

TSD

Thermal Shutdown Temperature

170

150

190

°C (min)

°C (max)

Output Power

THD = 1% (max); f = 1kHz

L = 8Ω Mono BTL

1.8

1.5

W (min)

THD+N

Total Harmonic Distortion + Noise

O = 600mWRMS; f = 1kHz

V-BTL = 6dB

0.07

0.5

% (max)

O = 600mWRMS; f = 1kHz

V-BTL = 26dB

0.35

Output Noise

A-Weighted Filter, R

i = Rf = 20kΩ

Input Referred (Note 9)

µV

PSRR

Power Supply Rejection Ratio

RIPPLE = 200mVp-p, f = 217Hz,

B = 1.0μF, Input Referred

dB (min)

Electrical Characteristics V

DD = 3.3V (Notes 1, 2)

The following specifications apply for V

DD = 3.3V, AV-BTL = 6dB, RL = 8Ω unless otherwise specified. Limits apply for TA = 25°C.

Symbol

Parameter

Conditions

LM4951A

Units

(Limits)

Typical

(Note 6)

Limit

(Note 7)

Quiescent Power Supply Current

IN = 0V, IO = 0A, RL = 8Ω BTL

2.5

4.5

mA (max)

Shutdown Current

SHUTDOWN = GND (Note 8)

0.01

µA (max)

Output Offset Voltage

mV (max)

SDIH

Shutdown Voltage Input High

1.2

V (min)

SDIL

Shutdown Voltage Input Low

0.4

V (max)

Wake-up Time

B = 1.0µF

Shutdown time

B = 1.0µF

ms (max)

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