SM6453AB Ver la hoja de datos (PDF) - Nippon Precision Circuits

Número de pieza

componentes Descripción

Lista de partido

SM6453AB

3-wire Serial Data Volume Control for Headphone Amplifier IC

Nippon Precision Circuits  

SM6453AB

3-wire Serial Data Volume Control for Headphone Amplifier IC

OVERVIEW

The SM6453AB is a stereo headphone amplifier IC with built-in electronic volume controlled by 3-wire serial

data. Two switchable input systems are supported. It features bass boost function, automatic gain control

(AGC) function, power-down function, and beep sound input/output function, making it ideal for use in porta-

ble electronic products.

FEATURES

I 2 stereo system inputs, selectable 1 output system

I Headphone amplifier function

• +12dB to -68dB output voltage gain range

(GCNT)

• +12dB headphone amplifier gain (GHPA)

I Attenuation function

• 1.0dB step width, 81 steps, 0 to –80dB range

(GEVR)

I Mute function

I Bass boost function (2 boost characteristics con-

trolled by external RC network)

I Auto gain control function (AGC)

I Beep sound input/output circuit

I 26mW+26mW maximum output power

(1kHz, THD + N = 10%, 16Ω load, 2.0V supply

voltage)

I Power-down function

I 1.8 to 3.6V operating supply voltage range

I Low current consumption

(2.3mA total, 2.4V supply voltage)

I Silicon-gate CMOS process

I 32-pin QFN package

PINOUT

(Top view)

MLEN

MCK

MDT

RSTN

MUTEN

PDN

BEEPI

VREF1

VREF2

32 31 30 29 28 27 26

1

25

2

24

3

23

4

22

5

21

6

20

7

19

8

18

9

17

10 11 12 13 14 15 16

BSTO

BEEPLO

LOUT

AVSS2

AVDD2

AVDD3

AVSS3

ROUT

BEEPRO

PACKAGE DIMENSIONS

(Unit: mm)

ORDERING INFORMATION

Device

SM6453AB

Package

32-pin QFN

(Top view)

6.20 ± 0.1

6.00 ± 0.05

(Bottom view)

3.22TYP

1

0.50 1.00

0.22 ± 0.05

0.05

0.05 M

0.60 ± 0.10

NIPPON PRECISION CIRCUITS INC.—1

Share Link: