MAX9709ECB datasheet(3/24 Pages) MAXIM

Part #	MAX9709ECB

Description	25W/50W, Filterless, Spread-Spectrum, Stereo/Mono, Class D Amplifier

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Manufacturer	MAXIM [Maxim Integrated Products]

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25W/50W, Filterless, Spread-Spectrum,

Stereo/Mono, Class D Amplifier

_______________________________________________________________________________________

3

ELECTRICAL CHARACTERISTICS (continued)

(PVDD = VDD = +20V, PGND = GND = 0V, CSS = 0.47µF, CREG = 0.01µF, C1 = 0.1µF, C2 = 1µF, RLOAD =

∞, MONO = low (stereo

mode), SHDN = MUTE = high, G1 = low, G2 = high (AV = 22dB), FS1 = FS2 = high (SSM), SYNCIN = low. All load resistors (RL) are

connected between OUT_+ and OUT_-, unless otherwise stated. TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA

= +25°C.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

G1 = 0, G2 = 1

21.6

22.0

22.3

G1 = 1, G2 = 1

24.9

25.0

25.6

G1 = 1, G2 = 0

29.2

29.5

29.9

Gain

AV

G1 = 0, G2 = 0

35.9

36.0

36.6

dB

TH2

TH1

TH0

00

0

80

00

1

90

0

1

0

100

0

1

110

1

0

120

1

0

1

129

1

0

139

TEMP Flag Threshold

TFLAG

11

1

°C

TEMP Flag Accuracy

From +80°C to +140°C

±6

°C

TEMP Flag Hysteresis

2°C

STEREO MODE (RLOAD = 8

Ω, Note 3)

MUTE = 1, RLOAD =

∞

20

33

Quiescent Current

MUTE = 0

6.5

13

mA

PVDD = 20V

25

PVDD = 22V

29

Output Power

POUT

f = 1kHz, THD =

10%, TA = +25°C

PVDD = 12V,

RLOAD = 4

Ω

15

W

Total Harmonic Distortion Plus

Noise

THD+N

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

POUT = 12W

0.1

%

22Hz to 22kHz

91

Signal-to-Noise Ratio

SNR

POUT = 10W

A-weighted

96

dB

Efficiency

η

POUT = 25W + 25W, f = 1kHz

87

%

Left-Right Channel Gain

Matching

RLOAD =

∞

0.2

%

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