LM4990

SNAS184E – DECEMBER 2002 – REVISED MAY 2013

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Electrical Characteristics VDD = 3V

(1) (2)

The following specifications apply for the circuit shown in Figure 1, unless otherwise specified. Limits apply for TA = 25°C.

LM4990

Units

Symbol

Parameter

Conditions

(Limits)

Typical(3)

Limit(4)(5)

VIN = 0V, Io = 0A, No Load

2

7

mA (max)

IDD

Quiescent Power Supply Current

VIN = 0V, Io = 0A, 8Ω Load

3

9

mA (max)

ISD

Shutdown Current

VSD = VSD Mode

(6)

0.1

2.0

µA (max)

VSDIH

Shutdown Voltage Input High

VSD MODE = VDD

1.1

V

VSDIL

Shutdown Voltage Input Low

VSD MODE = VDD

0.9

V

VSDIH

Shutdown Voltage Input High

VSD MODE = GND

1.3

V

VSDIL

Shutdown Voltage Input Low

VSD MODE = GND

1.0

V

VOS

Output Offset Voltage

7

50

mV (max)

ROUT

9.7

k

Ω (max)

Resistor Output to GND(7)

8.5

7.0

k

Ω (min)

(8

Ω)

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

425

mW

Po

Output Power

(4

Ω)

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

600

mW

TWU

Wake-up time

75

ms

THD+N

Total Harmonic Distortion+Noise

Po = 0.25Wrms; f = 1kHz

0.1

%

+N

Vripple = 200mV sine p-p

62 (f = 217Hz)

PSRR

Power Supply Rejection Ratio

55

dB (min)

Input terminated with 10

Ω

68 (f = 1kHz)

(1)

Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for

which the device is intended to be functional but specific performance is not ensured. Electrical Characteristics state DC and AC

electrical specifications under particular test conditions which ensure specific performance limits. This assumes that the device is within

the Operating Ratings. Specifications are not ensured for parameters where no limit is given, however, the typical value is a good

indication of device performance.

(2)

All voltages are measured with respect to the ground pin, unless otherwise specified.

(3)

Typicals are measured at 25°C and represent the parametric norm.

(4)

Limits are specified to AOQL (Average Outgoing Quality Level).

(5)

Datasheet min/max specification limits are specified by design, test, or statistical analysis.

(6)

For DSBGA only, shutdown current is measured in a Normal Room Environment. Exposure to direct sunlight will increase ISD by a

maximum of 2µA.

(7)

RROUT is measured from the output pin to ground. This value represents the parallel combination of the 10kΩ output resistors and the

two 20k

Ω resistors.

6

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