DataSheet.jp

GPM8903 の電気的特性と機能

GPM8903のメーカーはGiant Power Microelectronicsです、この部品の機能は「Low EMI Audio Class D Amplifier」です。


製品の詳細 ( Datasheet PDF )

部品番号 GPM8903
部品説明 Low EMI Audio Class D Amplifier
メーカ Giant Power Microelectronics
ロゴ Giant Power Microelectronics ロゴ 




このページの下部にプレビューとGPM8903ダウンロード(pdfファイル)リンクがあります。
Total 9 pages

No Preview Available !

GPM8903 Datasheet, GPM8903 PDF,ピン配置, 機能
GPM8903
Non-Clip,Low EMI Audio Class D Amplifier
General Description
Features
The GPM8903 is a Class D amplifiers provide high
performance, thermally efficient amplifier solutions.
The GPM8903 delivers 1*4.5W into a 2Ω load.
An integrated limiting circuit prevents output clipping
distortion, that makes GPM8903 has excellent sound
reproduction and protects small speakers from
transient volt-ages, reduces power dissipation.
The GPM8903 has a 2:1 input MUX for audio source
selection. The MUX was selected by an external pin.
Both input channels have a 32-step Up/Down volume
control.
Filter-less modulation allows the IC to pass EMI limits
with 1m cables using only a low-cost ferritebead and
small-value capacitor on each output.
Built-in fade in and fade out circuit to minimize click-
and-pop noise coming into and out of shutdown.
The GPM8903 features over current protection, short
circuit protection, over temperature protection and
UVLO.
n High Output Power:
4.5W@V =DD 5.0V, RL=2Ω, THD+N=10%
3.0W@V =DD 5.0V, RL=4Ω, THD+N=10%
1.8W@V =DD 5.0V, RL=8Ω, THD+N=10%
n 32-Step Up/Down Volume Control
n 2:1 input MUX for Audio Source Selection
n Low THD+N:
0.07%@V =DD 5.0V, RL=4Ω, Po=1.5W
n Fade-in and Fade-out Function
n Minimized Click-and-Pop Noise
n Thermal Shutdowns
n Under-Voltage-Lockout
n Over-Current Protection
n SOP-16 Pb Free Package
Applications
n Portable Speakers
n Blue Tooth Speakers
n FM System
n Audio System
The GPM8903 is available in SOP16 package.
Typical Application
Giant Power Microelectronics Co., LTD
1

1 Page





GPM8903 pdf, ピン配列
GPM8903
Non-Clip,Low EMI Audio Class D Amplifier
Absolute Maximum Ratings
Parameters
PVDD
AVDD
IN1+, IN-, IN2+ and IN2-
Up, Down, NC1, NC2 and MUTE
Junction Temperature Range
Storage Temperature Range
Symbol
PVDD
AVDD
IN
TJMAX
TSTG
Min.
0.3
0.3
VSS0.6
VSS0.3
50
Max.
6.5
6.5
VDD0.6
VDD0.3
125
125
Unit
V
V
V
V
Recommend Operation Ratings
Parameters
PVDD
AVDD
Operation Temperature
Symbol
VDDP
VDDA
Ta
Min.
2.7
2.7
-40
Typ.
3.6
3.6
25
Max.
5.5
5.5
85
Unit
V
V
DC Electrical Characteristic
TA=25°C ,VDD=2.7V to 5.5V,unless otherwise specified.
Parameter
Symbol Test Conditions
AVDD UVLO
VUVLH
AVDD UVLO Hysterisis
VUVLL
BTLINE,MUTE,UP,DOWN Input High VIH
BTLINE,MUTE,UP,DN input Low
VIL
Quiescent Current
IAVDD VDDA =5V,No Load
Mute Current
Start Up Time
IPD MUTE=VDD
Ton
Frequency
fOSC
Min. Typ. Max. Unit
2.2 V
0.2 V
1.9 V
0.35 V
6.0 mA
0.1 µA
32 mS
250 KHz
Giant Power Microelectronics Co., LTD
3


3Pages


GPM8903 電子部品, 半導体
GPM8903
Non-Clip,Low EMI Audio Class D Amplifier
Application Information
Up/Down Volume Control
The GPM8903 features a Up/Down volume control which consists of the UP and Down pins. An internal
clock is used where the clock frequency value is determined from the following formula:
fCLK = fOSC / 213
The oscillator frequency fOSC value is 250kHz typical,with ±20% tolerance. The clock frequency is 30Hz
(cycle time 32ms) typical.
Volume changes are then effected by toggling either the UP or DOWN pins with a logic low. After a period
of 2 clocks pulses with either the UP or DOWN pins held low, the volume will change to the next specified
step, either UP or DOWN, and followed by a short delay. This delay decreases the longer the line is held
low, eventually reaching a delay of zero. The delay allows the user to pull the UP or DOWN terminal low
once for one volume change, or hold down to ramp several volume changes. The delay is optimally
configured for push button volume control.
If either the UP or DOWN pin remains low after the first volume transition the volume will change again, but
this time after 8 clock pulses. The followed transition occurs at 2 clock pulses for each volume transition.
This is intended to provide the user with a volume control that pauses briefly after initial application, and
then slowly increases the rate of volume change as it is continuously applied. This cycle is shown in the
timing diagram shown in figure 1.
UP/DN
VOLUME
LEVEL
3.5 cycles
9.5 cycles
Fig-1
2 cycles
There are 32 discrete gain settings ranging from +24dB maximum to -85dB minimum. Upon device power
on, the amplifier's gain is set to a default value of 10dB. However, when coming out of mute mode, the
GPM8903 will revert back to its previous gain setting. Volume levels for each step vary and are specified in
Gain Setting table 1 below.
Step
1
2
3
4
5
6
7
8
9
10
11
Av (dB)
-85
-36
-34
-32
-30
-28
-26
-24
-22
-20
-18
Step
12
13
14
15
16
17
18
19
20
21
22
Av(dB)
-16
-14
-12
-10
-8
-6
-4
-2
0
2
4
Step
23
24
25
26
27
28
29
30
31
32
Av(dB)
6
8
10
12
14
16
18
20
22
24
Table 1: 32-Step Volume Control
If both the UP and DN pins are held high, no volume change will occur. Trigger points for the UP and
DOWN pins are at 70% of VDD minimum for a logic high, and 20% of VDD maximum for a logic low. It is
recommended, however, to toggle UP and DN between VDD and GND for best performance.
Giant Power Microelectronics Co., LTD
6

6 Page



ページ 合計 : 9 ページ
 
PDF
ダウンロード
[ GPM8903 データシート.PDF ]


データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。


共有リンク

Link :


部品番号部品説明メーカ
GPM8903

Low EMI Audio Class D Amplifier

Giant Power Microelectronics
Giant Power Microelectronics


www.DataSheet.jp    |   2020   |  メール    |   最新    |   Sitemap