MAX4411BETP datasheet(8/18 Pages) MAXIM

Part #	MAX4411BETP

Description	80mW, Fixed-Gain, DirectDrive, Stereo Headphone Amplifier with Shutdown

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Manufacturer	MAXIM [Maxim Integrated Products]

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

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8 / 18 page

80mW, Fixed-Gain, DirectDrive, Stereo

Headphone Amplifier with Shutdown

8

_______________________________________________________________________________________

Pin Description

BUMP

QFN

UCSP

NAME

FUNCTION

1

A4

C1P

Flying Capacitor Positive Terminal

2

B4

PGND

Power Ground. Connect to ground (0V).

3

C4

C1N

Flying Capacitor Negative Terminal

4, 6, 8, 12,

16, 20

—

N.C.

No Connection. Not internally connected.

5D4

PVSS

Charge-Pump Output

7D3

SVSS

Amplifier Negative Power Supply. Connect to PVSS.

9

D2

OUTL

Left-Channel Output

10

D1

SVDD

Amplifier Positive Power Supply. Connect to positive supply (1.8V to 3.6V).

11

C2

OUTR

Right-Channel Output

13

C1

INL

Left-Channel Audio Input

14

B1

SHDNR

Active-Low Right-Channel Shutdown. Connect to VDD for normal operation.

15

A1

INR

Right-Channel Audio Input

17

A2

SGND

Signal Ground. Connect to ground (0V).

18

B2

SHDNL

Active-Low Left-Channel Shutdown. Connect to VDD for normal operation.

19

A3

PVDD

Charge-Pump Power Supply. Powers charge-pump inverter, charge-pump logic, and

oscillator. Connect to positive supply (1.8V to 3.6V).

——

EP

Exposed Paddle. Leave this connection floating. Do not tie to either GND or VDD.

POWER-UP/DOWN WAVEFORM

MAX4411 toc41

OUT_

OUT_FFT

VDD

3V

20dB/div

10mV/div

0V

200ms/div

FFT: 25Hz/div

RL = 32

Ω

VIN_ = GND

-100dB

Typical Operating Characteristics (continued)

(C1 = C2 = 2.2µF, THD+N measurement bandwidth = 22Hz to 22kHz, TA = +25°C, unless otherwise noted.)

EXITING SHUTDOWN

MAX4411 toc40

OUTR

SHDNR

2V/div

500mV/div

200

µs/div

fIN = 1kHz

RL = 32

Ω

SHDNL = GND

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