LM4951A

SNAS453B – AUGUST 2008 – REVISED SEPTEMBER 2008

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(1) (2)

25°C.

LM4951A

Units

Parameter

Test Conditions

(Limits)

Quiescent Power Supply Current

2.5

4.5

mA (max)

Shutdown Current

(5)

0.01

5

µA (max)

Output Offset Voltage

5

30

mV (max)

Shutdown Voltage Input High

1.2

V (min)

Shutdown Voltage Input Low

0.4

V (max)

Pull-down Resistor on SD pin

75

45

k

Ω (min)

Wake-up Time

25

35

ms (max)

Shutdown time

10

ms (max)

150

°C (min)

TSD

Thermal Shutdown Temperature

170

190

°C (max)

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

Output Power

1.8

1.5

W (min)

0.07

0.5

% (max)

THD+N

Total Harmonic Distortion + Noise

0.35

%

Output Noise

10

µV

PSRR

Power Supply Rejection Ratio

66

56

dB (min)

(1)

“Absolute Maximum Ratings” indicate limits beyond which damage to the device may occur, including inoperability and degradation of

device reliability and/or performance. Functional operation of the device and/or non-degradation at the s or other conditions beyond

those indicated in the Recommended Operating Conditions is not implied. The Recommended Operating Conditionsindicate conditions

at which the device is functional and the device should not be operated beyond such conditions. All voltages are measured with respect

to the ground pin, unless otherwise specified.

(2)

The Electrical Characteristics tables list ensured specifications under the listed Recommended Operating Conditions except as

otherwise modified or specified by the Electrical Characteristics Conditions and/or Notes. Typical specifications are estimations only and

are not ensured.

(3)

product characterization and are not specified.

(4)

Datasheet min/max specification limits are ensured by test or statistical analysis.

(5)

Shutdown current is measured in a normal room environment. The Shutdown pin should be driven as close as possible to GND for

minimum shutdown current.

(6)

Noise measurements are dependent on the absolute values of the closed loop gain setting resistors (input and feedback resistors).

4

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