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參數(shù)資料
| 型號： | NJU8721 |
| 廠商： | New Japan Radio Co., Ltd. |
| 英文描述： | CLASS D HEADPHONE AMPLIFIER FOR DIGITAL AUDIO |
| 中文描述： | D類耳機放大器用于數(shù)字音頻 |
| 文件頁數(shù)： | 1/13頁 |
| 文件大?。?/td> | 172K |
| 代理商： | NJU8721 |
NJU8721
- 1 -
CLASS D HEADPHONE AMPLIFIER FOR DIGITAL AUDIO
!
GENERAL DESCRIPTION
The
NJU8721
is a class D Headphone Amplifier
featuring 6
th
Σ
modulation. It includes Digital
Attenuator, Mute, and De-emphasis circuits. It
converts Digital source input to PWM signal output
which is output PWM signal converted to analog
signal with simple external LC Filter. The
NJU8721
realizes very high power-efficiency by class D
operation. Therefore, it is suitable for portable audio
set and others.
!
FEATURES
#
Stereo Headphone Power Amplifier
#
Sixth-order 32f
S
Over Sampling
Σ
& PWM
#
Internal 8f
S
Over Sampling Digital Filter
#
Sampling Frequency : 96kHz (Max.)
#
De-Emphasis
#
System Clock
#
Digital Processing
: 50mW+50mW
: 32kHz, 44.1kHz, 48kHz
: 256f
S
: Attenuator 107step, LOG Curve
: Mute
#
Digital Audio Interface : 16bit, 18bit
#
Operating Voltage
#
Driving Voltage
#
C-MOS Technology
#
Package Outline
: I
S, LSB Justified, MSB Justified
: 3.0 to 3.6V
: V
DD
to 5.25V
: SSOP20
!
BLOCK DIAGRAM
!
PIN CONFIGURATION
!
PACKAGE OUTLINE
NJU8721V
PRELIMINARY
System
Control
MUTE
STBY
MODE
F0/DATA
F1/REQ
F2/SCK
RST
32f
S
6
th
Σ
&
PWM
BCK
DIN
LRCK
Serial
Audio Data
Interface
8f
S
Over Sampling
Digital Filter
MCK
Power On
Reset Circuit
V
DD
V
SS
V
DDL
V
SSL
OUT
L
V
DDR
V
SSR
OUT
R
Synchronization
Circuit
OUT
R
V
DDR
V
DDL
OUT
L
V
SSL
MODE
RST
STBY
TEST
V
SSR
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
V
SS
MCK
BCK
LRCK
DIN
MUTE
F2/SCK
F1/REQ
F0/DATA
V
DD
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| NJU8721V | CLASS D HEADPHONE AMPLIFIER FOR DIGITAL AUDIO |
| NJU8725 | CLASS D AMPLIFIER FOR DIGITAL AUDIO |
| NJU8752V | Analog Signal Input Class D Amplifier for Piezo Speaker |
| NJU8752 | Analog Signal Input Class D Amplifier for Piezo Speaker |
| NJU8753 | Analog Signal Input Class D Amplifier |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| NJU8721C | 功能描述:音頻 DSP Class D Hdphne RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風(fēng)格: 封裝 / 箱體: 封裝:Tube |
| NJU8721KN1 | 功能描述:音頻放大器 Class D Hdphne RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| NJU8721V | 制造商:NJRC 制造商全稱:New Japan Radio 功能描述:CLASS D HEADPHONE AMPLIFIER FOR DIGITAL AUDIO |
| NJU8721V(TE2) | 制造商:New Japan Radio 功能描述:Audio Amp Headphone 2-CH Stereo 0.08W Class-D 20-Pin SSOP T/R |
| NJU8721V-TE1 | 功能描述:音頻放大器 Class D Hdphne RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
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