LM4991

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SNAS217A – MAY 2004 – REVISED APRIL 2013

Electrical Characteristics VDD = 5V

(1) (2)

The following specifications apply for VDD = 5V and RL = 8Ω unless otherwise specified. Limits apply for TA = 25°C.

LM4991

Parameter

Test Conditions

Units

Typ(3)

Limit(4)

(Limits)

Quiescent Power Supply Current VIN = 0V, no Load

3

7

IDD

mA (max)

VIN = 0V, RL = 8Ω

4

10

ISD

Shutdown Current

VSHUTDOWN = VDD

0.1

2.0

µA (max)

VSDIH

Shutdown Voltage

1.5

V

VSDIL

1.3

V

VOS

Output Offset Voltage

5

35

mV (max)

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

LM4991LD, RL = 3Ω

(5)

2.38

0.9

W (min)

LM4991LD, RL = 4Ω

(5)

2.1

LM4991, RL = 8Ω

1.3

Po

Output Power

THD+N = 10%, f = 1kHz

LM4991LD, RL = 3Ω

(5)

3

LM4991LD, RL = 4Ω

(5)

2.5

W

LM4991, RL = 8Ω

1.5

THD+N

Total Harmonic Distortion+Noise

PO = 0.5W, f = 1kHz

0.2

%

PSRR

Power Supply Rejection Ratio

VRIPPLE = 200mV sine p-p,

Input terminated with 10

Ω,

64

55

dB (min)

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 functional, but do not ensure specific performance limits. Electrical Characteristics VDD= 5V 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 ensure 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 specified at 25°C and represent the parametric norm.

(4)

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

(5)

When driving 3

Ω or 4Ω loads from a 5V supply, the LM4991LD must be mounted to a circuit board.

Electrical Characteristics VDD = 3V

(1) (2)

The following specifications apply for VDD = 3V and RL = 8Ω unless otherwise specified. Limits apply for TA = 25°C.

LM4991

Parameter

Test Conditions

Units

Typ(3)

Limit(4)

(Limits)

IDD

Quiescent Power Supply

VIN = 0V, no Load

3

7

mA

Current

(max)

VIN = 0V, RL = 8Ω

4

7

ISD

Shutdown Current

VSHUTDOWN = VDD

0.1

2.0

µA (max)

VSDIH

Shutdown Voltage Input High

1.1

V

VSDIL

Shutdown Voltage Input Low

0.9

V

VOS

Output Offset Voltage

5

35

mV

(max)

Po

Output Power

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

RL = 4Ω

600

mW

RL = 8Ω

425

Total Harmonic

THD+N

PO = 0.25W, f = 1kHz

0.1

%

Distortion+Noise

(1)

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 ensure specific performance limits. Electrical Characteristics VDD= 5V 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 ensure 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 specified at 25°C and represent the parametric norm.

(4)

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

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