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PDF G1432 Data sheet ( Hoja de datos )
| Número de pieza | G1432 | |
| 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 G1432 (archivo pdf) en la parte inferior de esta página. Total 15 Páginas | ||
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Global Mixed-mode Technology Inc.
2W Stereo Audio Amplifier
G1432
Features
Depop Circuitry Integrated
Output Power at 1% THD+N, VDD=5V
--1.8W/CH (typical) into a 4Ω Load
--1.2W/CH (typical) into a 8Ω Load
Maximum Output Power Clamping Circuitry
Integrated
Bridge-Tied Load (BTL)
Stereo Input MUX
Mute and Shutdown Control Available
www.DataSheet4U.cSoumrface-Mount Power Package
24-Pin TSSOP-P & 24-Pin QFN Available
Applications
Stereo Power Amplifiers for Notebooks or
Desktop Computers
Multimedia Monitors
Stereo Power Amplifiers for Portable Audio
Systems
Pin Configuration
General Description
The G1432 is a stereo audio power amplifier in 24pin
TSSOP thermal pad package or 24pin QFN package.
It can drive 1.8W continuous 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. The G1432 can mute the
output when Mute is activated. For the low current
consumption applications, the SHDN mode is sup-
ported to disable the G1432 when it is idle. The cur-
rent consumption can be further reduced to below
5µA.
The G1432 also supports two input paths, that means
two different gain loops can be set in the same PCB
and choosing either one by setting IN1 /IN2 pin. It en-
hances the hardware designing flexibility. The G1432
also supports an extra function -- the maximum output
power clamping function to protect the speakers from
burned-out.
Ordering Information
ORDER
NUMBER
MARKING
TEMP.
RANGE
PACKAGE
(Pb free)
G1432F3U G1432 -40°C to +85°C TSSOP-24 (FD)
G1432Q5U G1432 -40°C to +85°C QFN4X4-24
Note: F3:TSSOP-24 (FD) Q5:QFN4X4-24
U: Tape & Reel
G1432
GND/HS 1
NC 2
LOUT+ 3
LIN1 4
LIN2 5
LBYPASS 6
LVDD 7
SHUTDOWN 8
NC 9
LOUT- 10
NC 11
GND/HS 12
24 GND/HS
23 VOL
22 ROUT+
21 RIN1
20 RIN2
19 RBYPASS
18 RVDD
17 GND
16 IN1/IN2
15 ROUT-
14 MUTE
13 GND/HS
Top View
TSSOP-24 (FD)
Thermal
Pad
Bottom View
ROUT+ 19
VOL 20
GND/HS 21
GND/HS 22
NC 23
LOUT+ 24
Thermal
Pad
12 ROUT-
11 MUTE
10 GND/HS
9 GND/HS
8 NC
7 LOUT-
G1432 QFN4X4-24
Note: Recommend connecting the Thermal Pad to the GND for excellent power dissipation.
Ver: 1.1
Jun 21, 2006
TEL: 886-3-5788833
http://www.gmt.com.tw
1
1 page  
Global Mixed-mode Technology Inc.
G1432
Total Harmonic Distortion Plus
Noise vs Output Frequency
10
5 VDD=5V
RL=4Ω
2 BTL
Av=-2V/V
1
0.5
%
0.2
Po=0.25W
Po=1.5W
www.DataSheet4U.com
0.1
0 .05
0 .02
Po=0.75W
0 .01
20
50 10 0 2 00
5 00
Hz
1k
2k
Figure 5
5 k 10 k 20k
Total Harmonic Distortion Plus
Noise vs Output Power
10
VDD=5V
5 RL=8Ω
2
20kHz
BTL
Av=-2V/V
1
0.5
%
0.2
0.1
1kHz
0 .05
20Hz
0 .02
0 .01
3 m 5 m 10m 20m
5 0m
1 00m
W
20 0m
Figure 6
500 m
1
23
10
5
2
1
0.5
%
0.2
0.1
0 .05
Total Harmonic Distortion Plus
Noise vs Output Frequency
VDD=5V
RL=8Ω
BTL
Av=-2V/V
Po=0.25W
Po=1W
Po=0.5W
0 .02
0 .01
20
50 10 0 2 00
5 00
Hz
1k
2k
Figure 7
5 k 10 k 20k
Total Harmonic Distortion Plus
Noise vs Output Frequency
10
5
2
1
0.5
%
0.2
VDD=5V
RL=8Ω
BTL
Po=1W
Av=-4V/V
Av=-2V/V
0.1
0 .05
Av=-1V/V
0 .02
0 .01
20
50 10 0 2 00
5 00
Hz
1k
2k
Figure 8
5 k 10 k 20k
Total Harmonic Distortion Plus
Noise vs Output Power
10
5
20kHz
2
1
0.5
%
0.2
1kHz
0.1
VDD=3.3V
0.05 RL=3Ω
BTL
0 .02
20Hz
0 .01
1m
2m
5m 1 0m 20 m
50 m 10 0m 2 00 m
W
500 m 1
Figure 9
Total Harmonic Distortion Plus
Noise vs Output Power
10
5
20kHz
2
1
0.5
%
0.2
1kHz
0.1 VDD=3.3V
0.05 RL=4Ω
BTL
0 .02
20Hz
0 .01
1m
2m
5m 1 0m 20 m
50 m 10 0m 2 00 m
W
500 m 1
Figure 10
Ver: 1.1
Jun 21, 2006
TEL: 886-3-5788833
http://www.gmt.com.tw
5
5 Page 
Global Mixed-mode Technology Inc.
Application Circuits
(TSSOP-24)
G1432
www.DataSheet4U.com
RFL
CIR
CFR
AUDIO SOURCE
GND/HS
NC
1
2
LOUT+
LIN1
RIR
LIN2
LBYPASS
3
4
5
6
RBYPASS 19
SHUTDOWN
8
NC 9
LOUT-
10
NC
11
GND/HS
12
G1432
GND/HS
24
23 VOL
ROUT+
22
RIN1
21
20 RIN2
7 LVDD
RIL
18 RVDD
17 GND
CSR
CIL
RFL
AUDIO SOURCE
16 IN1/IN2
ROUT-
15
MUTE
14
13 GND/HS
CFL
Logical Truth Table
Mute
X
Low
Low
High
High
IN1 /IN2
X
Low
High
Low
High
Shutdown
High
Low
Low
Low
Low
Input
X
L/R IN1
L/R IN2
L/R IN1
L/R IN2
OUTPUT
L/R Out+ L/R Out-
---- ----
Output Output
Output Output
Output
----
Output
----
Mode
Shutdown (Mute)
BTL
BTL
Mute
Mute
Ver: 1.1
Jun 21, 2006
TEL: 886-3-5788833
http://www.gmt.com.tw
11
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet G1432.PDF ] | |
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