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PDF G1427 Data sheet ( Hoja de datos )
| Número de pieza | G1427 | |
| Descripción | 2W Stereo Audio Amplifier | |
| Fabricantes | Global Mixed-mode Technology | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de G1427 (archivo pdf) en la parte inferior de esta página. Total 16 Páginas | ||
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Global Mixed-mode Technology Inc.
2W Stereo Audio Amplifier
6dB\10dB\15.6dB\21.6dB Selectable Gain Settings
G1427
Features
Internal Gain Control, Which Eliminates Exter-
nal Gain-Setting Resistors
Depop Circuitry Integrated
Output Power at 1% THD+N, VDD=5V
--2.0W/CH (typical) into a 4Ω Load
--1.2W/CH (typical) into a 8Ω Load
Bridge-Tied Load (BTL), Single-Ended (SE)
www.DataSheet4U.Scotmereo Input MUX
PC-Beep Input
Fully differential Input
Shutdown Control Available
Surface-Mount Power Package
24-Pin TSSOP-P
Applications
Stereo Power Amplifiers for Notebooks or
Desktop Computers
Multimedia Monitors
Stereo Power Amplifiers for Portable Audio
Systems
General Description
G1427 is a stereo audio power amplifier in 24pin
TSSOP thermal pad package. It can drive 2.0W con-
tinuous RMS power into 4Ω load per channel in
Bridge-Tied Load (BTL) mode at 5V supply voltage. Its
THD is smaller than 1% under the above operation
condition. To simplify the audio system design in the
notebook application, G1427 supports the Bridge-Tied
Load (BTL) mode for driving the speakers, Single-End
(SE) mode for driving the headphone. For the low
current consumption applications, the SHDN mode is
supported to disable G1427 when it is idle. The current
consumption can be reduced to 160µA (typically).
Amplifier gain is internally configured and controlled by
two terminals (GAIN0, GAIN1). BTL gain settings of
6dB, 10dB, 15.6dB, 21.6dB are provided, while SE
gain is always configured as 4.1dB (inverting) for
headphone driving. G1427 also supports two input
paths, that means two different amplitude AC signals
can be applied and chosen by setting HP/ LINE pin. It
enhances the hardware designing flexibility.
Ordering Information
ORDER
NUMBER
G1427F31U
Note: U:Tape & Reel
(FD): Thermal Pad
ORDER NUMBER
(Pb free)
G1427F31Uf
TEMP.
RANGE
-40°C to +85°C
PACKAGE
TSSOP-24 (FD)
Pin Configuration
GND/HS
GAIN0
GAIN1
LOUT+
LLINEIN
LPHIN
PVDD
RIN
LOUT-
LIN
BYPASS
GND/HS
1
2
3
4
5
6
7
8
9
10
11
12
G1427
Top View
TSSOP-24
24 GND/HS
23 RLINEIN
22 SHUTDOWN
21 ROUT+
20 RHPIN
19 VDD
18 PVDD
17 HP/LINE
16 ROUT-
15 SE/BTL
14 PC-BEEP
13 GND/HS
Ver: 1.3
Sep 23, 2005
1
Thermal
Pad
Bottom View
TEL: 886-3-5788833
http://www.gmt.com.tw
1 page  
Global Mixed-mode Technology Inc.
G1427
Total Harmonic Distortion Plus
Noise vs Output Power
10
5
15kHz
2
1
0.5
%
0.2
1kHz
0.1
VDD=5V
0.05
www.DataSheet4U.com
RL=4Ω
0.02 BTL,Av=15.6dB
20Hz
0.01
3m 5m
10m 20m
50 m
100m
W
200 m
Figure 11
50 0m
1
23
Total Harmonic Distortion Plus
Noise vs Output Power
10
5 15kHz
2
1 1kHz
0.5
%
0.2
0.1
VDD=5V
0.05 RL=4Ω
BTL,Av=21.6dB
0.02
20Hz
0.01
3m 5m 10m 20m
50 m
100m
W
200 m
Figure 12
50 0m
1
23
Total Harmonic Distortion Plus
Noise vs Frequency
10
5 VDD=5V
RL=8Ω
2 BTL,Av=6dB
1
0.5
%
0.2
Po=0.25W
0.1
Po=1W
0.05
0.02
0.01
20
Po=0.5W
50 100 20 0
5 00
Hz
1k
2k
Figure 13
5k 10k 20 k
Total Harmonic Distortion Plus
Noise vs Output Power
10
5
2 15kHz
VDD=5V
RL=8Ω
BTL,Av=6dB
1
0.5
%
0.2
0.1
1kHz
0.05
20Hz
0.02
0.01
3m 5m
10m 20m
50 m
100m
W
200 m
Figure 15
50 0m
1
23
10
5
2
1
0.5
%
0.2
0.1
0.0 5
Total Harmonic Distortion Plus
Noise vs Frequency
VDD=5V
RL=8Ω
BTL
Po=1W
Av=15.6dB
Av=21.6dB
Av=6dB
0.02 Av=10dB
0.0 1
20
5 0 100 200
50 0
Hz
1k
2k
5k 10k 2 0k
Figure 14
Total Harmonic Distortion Plus
Noise vs Output Power
10
5
2
1
0.5
%
0.2
0.1
0.0 5
15kHz
VDD=5V
RL=8Ω
BTL,Av=10dB
1kHz
0.02 20Hz
0.0 1
3 m 5m
10m 20m
50 m
100m
W
200m
Figure 16
500m
1
23
Ver: 1.3
Sep 23, 2005
TEL: 886-3-5788833
http://www.gmt.com.tw
5
5 Page 
Global Mixed-mode Technology Inc.
Application Circuit
G1427
Right Linein Negative
Differential Input 1µF
1µF
Right Hpin Negative
www.DataSheet4U.com Differential Input
Right Hpin/Linein Positive
Differential Input 1µF
1µF
PC-BEEP Input Signal
2.2µF
Left Linein Negative
Differential Input 1µF
Left Hpin Negative 1µF
Differential Input
Left Hpin/Linein Positive
Differential Input
1µF
23 RLINEIN
20 RHPIN
Right
MUX
8 RIN
14 PC-Beep PC-Beep
11 BYPASS Depop
Circuitry
2 GAIN0
3 GAIN1
15
SE/BTL
Gain/MUX
Control
17 HP/LINE
5 LLINEIN
6 LHPIN
Left
MUX
10 LIN
ROUT+ 21
ROUT- 16
220µF
VDD
1K
PVDD
Power
VDD
Management SHUTDOWN
1,12,13,24
GND
7,18 VDD
19
22 1µF 10µF
Note
100K
LOUT+ 4
1K
220µF
LOUT- 3
0.1µF
Application Circuit Using Differential Inputs
Note: 1µF ceramic capacitor should be placed as close as possible to the IC to filter the higher-frequency noise.
Ver: 1.3
Sep 23, 2005
TEL: 886-3-5788833
http://www.gmt.com.tw
11
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet G1427.PDF ] | |
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