MAX9707 datasheet(11/25 Pages) MAXIM

Part #	MAX9707

Description	3-Channel, 2.3W, Filterless Class D Amplifiers with Active Crossover

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Manufacturer	MAXIM [Maxim Integrated Products]

Direct Link	https://www.maximintegrated.com/en.html

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3-Channel, 2.3W, Filterless Class D Amplifiers

with Active Crossover

______________________________________________________________________________________

11

Typical Operating Characteristics—Headphone Mode (continued)

(VDD = PVDD = HPVDD = 5V, GND = PGND = CPGND = 0V, SHDN = VDD, GAIN1 = GAIN2 = GND (+9dB), FS0 = FS1 = GND (800Hz),

MGAIN = float (-6dB), SYNC_IN = VDD (SSM), speaker load RL connected between OUT+ and OUT-, unless otherwise noted, RL =

∞.

Headphone load RLH connected between HPR/HPL to GND. CBIAS = 1µF to GND, 1µF capacitor between C1P and C1N, CVSS = 1µF.

TA = TMIN to TMAX, unless otherwise noted. Typical values at TA = +25°C.)

POWER-SUPPLY REJECTION RATIO

vs. FREQUENCY

FREQUENCY (Hz)

10k

1k

100

-100

-80

-60

-40

-20

0

-120

10

100k

VRIPPLE = 100mVP-P

INPUTS AC-GROUNDED

RIGHT

LEFT

CROSSTALK vs. FREQUENCY

FREQUENCY (Hz)

10k

1k

100

-70

-60

-50

-40

-30

-20

-10

0

-80

10

100k

RL = 32

Ω

POUT = 32mW

RIGHT TO LEFT

LEFT TO RIGHT

OUTPUT POWER

vs. CHARGE-PUMP CAPACITANCE

LOAD (

Ω)

45

40

20

25

30

35

30

40

50

60

70

80

90

100

20

15

50

f = 1kHz

THD+N = 1%

C1 = C2 = 0.22

µF

C1 = C2 = 0.47

µF

C1 = C2 = 1

µF

SUPPLY CURRENT

vs. SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

5.0

4.5

4.0

3.5

10

20

30

40

0

3.0

5.5

SUPPLY VOLTAGE = IVDD + IHPVDD

HPS = GND

HPVDD = 3.3V

HPS = VDD

VDD = 5V

OUTPUT FREQUENCY SPECTRUM

FREQUENCY (kHz)

15

10

5

-120

-100

-80

-60

-40

-20

0

-140

020

VOUT = -60dBV

f = 1kHz

RL = 32

Ω

TURN-ON/-OFF RESPONSE

MAX9706 toc36

2V/div

1V/div

100ms/div

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