20W/40W, Filterless, Spread-Spectrum,

Mono/Stereo, Class D Amplifier

4

_______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

∞, MONO = low (stereo

= +25°C.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Output Short-Circuit Current

Threshold

Ω

2.4

A

Into shutdown

-63

Click-and-Pop Level

Peak voltage, 32

samples/second,

A-weighted (Notes 2, 4)

Out of shutdown

-55

dBV

Ω, MONO = High)

∞

20

Quiescent Current

MUTE = 0

5

mA

Ω

23

Output Power

f = 1kHz,

THD = 10%

Ω

42

W

Total Harmonic Distortion Plus

Noise

f = 1kHz, BW = 22Hz to 22kHz,

0.12

%

20Hz to 20kHz

91

Signal-to-Noise Ratio

SNR

Ω,

A-weighted

95

dB

Efficiency

η

f = 1kHz

85

%

Output Short-Circuit Current

Threshold

Ω

4.8

A

Into shutdown

-60

Click-and-Pop Level

Peak voltage, 32

samples/second,

A-weighted (Notes 2, 4)

Out of shutdown

-63

dBV

DIGITAL INPUTS (SHDN, MUTE, G1, G2, FS1, FS2, TH0, TH1, TH2, SYNCIN, MONO)

Logic-Input Current

0 to 12V

1

µA

Logic-Input High Voltage

2.5

V

Logic-Input Low Voltage

0.8

V

OPEN-DRAIN OUTPUTS (TEMP, SYNCOUT)

Open-Drain Output Low Voltage

0.4

V

Leakage Current

0.2

µA

Note 1: All devices are 100% production tested at +25°C. All temperature limits are guaranteed by design.

Note 2: Inputs AC-coupled to GND.

Note 3: The device is current limited. The maximum output power is obtained with an 8

Ω load.

Note 4: Testing performed with an 8

Ω resistive load in series with a 68µH inductive load connected across BTL outputs. Mode tran-

sitions are controlled by SHDN.