LM4666, LM4666SDBD

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SNAS189 – MAY 2004

(1) (2)

25°C.

LM4666

Units

Parameter

Test Conditions

(Limits)

Quiescent Power Supply Current

6.5

10

mA (max)

7.0

Shutdown Current

(6)

0.02

2.0

µA (max)

Shutdown Voltage Input High

1.0

1.4

V (min)

Shutdown Voltage Input Low

0.8

0.4

V (max)

Gain Select Input High

1.0

1.4

V (min)

Gain Select Input Low

0.8

0.4

V (max)

5.25

dB (min)

Closed Loop Gain

6

6.75

dB (max)

11.25

dB (min)

Closed Loop Gain

12

12.75

dB (max)

Output Offset Voltage

10

35

mV (max)

Wake-up Time

6

ms

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

Output Power

450

400

mW (min)

22kHz BW

THD+N

Total Harmonic Distortion+Noise

0.65

%

Both channels in phase

Channel Separation

57

dB

90

k

Ω

Differential Input Resistance

60

k

Ω

60

dB

Inputs terminated to AC GND

PSRR

Power Supply Rejection Ratio

65

dB

CMRR

Common Mode Rejection Ratio

48

dB

SNR

Signal to Noise Ratio

83

dB

Output Noise

125

µV

(1)

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

(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 ensure specific performance limits. 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 specified for parameters where no limit is given, however, the typical value is a good indication

of device performance.

(3)

Typical specifications are specified at 25°C and represent the parametric norm.

(4)

Tested limits are specified to AOQL (Average Outgoing Quality Level).

(5)

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

(6)

PLAY mode. See the Application Information section under SHUTDOWN FUNCTION for more information.

External Components Description

(Figure 1)

Components

Functional Description

1.

Supply bypass capacitor which provides power supply filtering. Refer to the POWER SUPPLY BYPASSING section

for information concerning proper placement and selection of the supply bypass capacitor.

2.

Input AC coupling capacitor which blocks the DC voltage at the amplifier's input terminals.

Copyright © 2004, Texas Instruments Incorporated

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