Datasheet > NJW1262

NJW1262

更新时间： 2024-02-11 10:08:29

品牌	Logo	应用领域
NJRC		转换器放大器 DC-DC转换器
页数	文件大小	规格书
14页	193K
描述
Analog Signal Input Class-D Amplifier for Piezo Speaker with DC-DC Converter

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NJW1262 数据手册

NJW1262

Analog Signal Input Class-D Amplifier

for Piezo Speaker with DC-DC Converter

Q GENERAL DESCRIPTION

Q PACKAGE OUTLINE

The NJW1262 is an analog signal input monaural class-D amplifier for

Piezo speaker. And a built-in DC-DC converter generates fixed output

voltage. Therefore, it realizes 7Vrms@1kHz output signal with louder

sound and high efficiency.

The NJW1262 incorporates BTL amplifier, which eliminate AC coupling

capacitors, and it is capable of driving Piezo speaker with simple external

LC low-pass filters.

NJW1262NL2

Class-D operation achieves lower power operation for Piezo speaker,

thus the NJW1262 is suited for battery-powered applications.

Q FEATURES

O Output Voltage VDD=3.0V to 4.2V

VDDO=13.0V@SP MODE

VDDO=4.5V@REC MODE

O Analog Audio Signal Input

O 2input selector (Speaker Mode and Receiver Mode)

O 1-channel BTL Output, Piezo Speaker Driving

O Built-in DC-DC Converter

O Built-in Low Voltage Detector

O Standby (Hi-Z), Soft Start, Soft Mute Control

O Built-in Pop noise reduction

O Built-in Short Protector)

O Built-in Thermal Protection

O Package Outline: EPCSP32

Q BLOCK DIAGRAM

V_DD

V_DDO

EQ₁

EQ₂

V_DD

UVLO

V_DDO

UVLO

IN_SP

IN_PREC

IN_NREC

OUT_P

V_SS

Level

Shifter

Selector

Pulse

Width

OCP

Modulator

EQ₃

OUT_N

Level

Shifter

OSC

TSD

BIAS

Pulse

Width

COM

Modulator

OCP

STBYb

SOFT

V_SSREG

CONTROL

LOGIC

MODE

R_OSC1

R_OSC2

IN-

OUT_TEST

NJW1262Ver.4.0_E

- 1 -

12 3 4 5 6 7...14

中文翻译

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