MAX9724A(2007) 查看數據表（PDF） - Maxim Integrated

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MAX9724A
(Rev.:2007)

60mW, DirectDrive, Stereo Headphone Amplifier with Low RF Susceptibility and Shutdown

Maxim Integrated 

60mW, DirectDrive, Stereo Headphone Amplifier

with Low RF Susceptibility and Shutdown

Typical Operating Characteristics (continued)

(VDD = 5V, PGND = SGND = 0V, SHDN = VDD, C1 = C2 = 1µF, RL = ∞, gain = -1.5V/V (RIN = 20kΩ, RF = 30kΩ for the MAX9724A),

THD+N measurement bandwidth = 22Hz to 22kHz, both outputs driven in phase, TA = +25°C, unless otherwise noted.)

SHUTDOWN CURRENT

vs. SUPPLY VOLTAGE (TQFN ONLY)

140

NO LOAD INPUTS GND

120

100

80

60

40

20

VSHDN

5V/div

VIN_

1V/div

VOUT_

500mV/div

0

2.5 3.0 3.5 4.0 4.5 5.0 5.5

SUPPLY VOLTAGE (V)

EXITING SHUTDOWN

40µs/div

VSHDN

5V/div

VIN_

1V/div

VOUT_

500mV/div

ENTERING SHUTDOWN

20µs/div

PIN

TQFN UCSP

1

A1

2

A2

3

A3

4

A4

5

C2

6

B3

7

C1

8

B2

9

B4

10

C3

11

C4

12

B1

EP

—

Pin Description

NAME

FUNCTION

C1P

PGND

C1N

PVSS

SHDN

INL

SGND

INR

SVSS

OUTR

OUTL

VDD

EP

Flying Capacitor Positive Terminal. Connect a 1µF ceramic capacitor from C1P to C1N.

Power Ground. Connect to SGND.

Flying Capacitor Negative Terminal. Connect a 1µF ceramic capacitor from C1P to C1N.

Charge-Pump Output. Connect to SVSS and bypass with a 1µF ceramic capacitor to PGND.

Active-Low Shutdown Input

Left-Channel Input

Signal Ground. Connect to PGND.

Right-Channel Input

Amplifier Negative Supply. Connect to PVSS.

Right-Channel Output

Left-Channel Output

Positive Power-Supply Input. Bypass with a 1µF capacitor to PGND.

Exposed Paddle. Internally connected to SVSS. Connect to SVSS or leave unconnected.

6 _______________________________________________________________________________________

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