Electrical Characteristics V

(Notes 1, 2)

The following specifications apply for the circuit shown in Figure 1, unless otherwise specified. Limits apply for T

Symbol

Parameter

Conditions

LM4992

Units

(Limits)

Typical

Limit

(Note 6)

(Notes 7, 8)

I

DD

Quiescent Power Supply Current

V

4.0

mA (max)

V

Ω Load

6.0

mA (max)

I

SD

Shutdown Current

V

0.02

2.0

µA (max)

V

SDIH

Shutdown Voltage Input High

1.2

V

V

SDIL

Shutdown Voltage Input Low

1.0

V

V

OS

Output Offset Voltage

5

30

mV (max)

P

o

Output Power

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

channel

240

mW (min)

T

WU

Wake-up time

70

ms

THD+N

Total Harmonic Distortion+Noise

P

0.1

%

Xtalk

Crosstalk

80

dB

PSRR

Power Supply Rejection Ratio

V

Input terminated with 10

Ω

51 (f =

217Hz)

51 (f = 1kHz)

dB (min)

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 which

guarantee 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 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: Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis.

6.5V, no damage will occur, although operation life will be reduced. Operation above 6.5V with no current limit will result in permanent damage.

Equation 1 shown in the Application Information section. It may also be obtained from the power dissipation graphs.

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