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Электронный компонент: G1420F31U

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Ver: 1.5
Aug 04, 2005
TEL: 886-3-5788833
http://www.gmt.com.tw
1
G1420
Global Mixed-mode Technology Inc.
2W Stereo Audio Amplifier
Features
Depop Circuitry Integrated
Output Power at 1% THD+N, VDD=5V
--1.8W/CH (typical) into a 4
Load
--1.2W/CH (typical) into a 8
Load
Bridge-Tied Load (BTL), Single-Ended (SE)
Stereo Input MUX
Mute and 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
G1420 is a stereo audio power amplifier in 24pin
TSSOP thermal pad package. It can drive 1.8W con-
tinuous RMS power into 4
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, G1420 supports the Bridge-Tied
Load (BTL) mode for driving the speakers, Single-End
(SE) mode for driving the headphone. G1420 can
mute the output when Mute-In is activated. For the low
current consumption applications, the SHDN mode is
supported to disable G1420 when it is idle. The current
consumption can be further reduced to below 5A.
G1420 also supports two input paths, that means two
different gain loops can be set in the same PCB and
choosing either one by setting HP/ LINE pin. It en-
hances the hardware designing flexibility.
Ordering Information
ORDER
NUMBER
ORDER NUMBER
(Pb free)
TEMP.
RANGE
PACKAGE
G1420F31U
G1420F31Uf
-40C to +85C
TSSOP-24 (FD)
Note: F3: TSSOP-24 (FD)
U: Tape & Reel
Pin Configuration
ROUT+
RLINEIN
RHPIN
RBYPASS
RVDD
NC
HP/LINE
ROUT-
SE/BTL
GND/HS
LOUT+
LLINEIN
LHPIN
LBYPASS
LVDD
SHUTDOWN
MUTE OUT
LOUT-
MUTE IN
G1420
GND/HS
TSSOP-24 (FD)
13
24
23
22
21
20
19
18
17
16
15
5
6
7
8
9
10
11
12
1
4
3
2
14
TJ
NC
14
Thermal
Pad
Top View
Bottom View
GND/HS
GND/HS
Note: Recommend connecting the Thermal Pad to the GND for excellent power dissipation.
ROUT+
RLINEIN
RHPIN
RBYPASS
RVDD
NC
HP/LINE
ROUT-
SE/BTL
GND/HS
LOUT+
LLINEIN
LHPIN
LBYPASS
LVDD
SHUTDOWN
MUTE OUT
LOUT-
MUTE IN
G1420
GND/HS
TSSOP-24 (FD)
13
24
23
22
21
20
19
18
17
16
15
5
6
7
8
9
10
11
12
1
4
3
2
14
TJ
NC
14
Thermal
Pad
Top View
Bottom View
GND/HS
GND/HS
Note: Recommend connecting the Thermal Pad to the GND for excellent power dissipation.
Ver: 1.5
Aug 04, 2005
TEL: 886-3-5788833
http://www.gmt.com.tw
2
G1420
Global Mixed-mode Technology Inc.
Absolute Maximum Ratings
Supply Voltage, V
CC
............................................6V
Operating Ambient Temperature Range
T
A
...................................................40C to +85C
Maximum Junction Temperature, T
J
.................150C
Storage Temperature Range, T
STG
......-65C to+150C
Reflow Temperature (soldering, 10sec)............260C
Power Dissipation
(1)
T
A
25C..................................................2.7W
T
A
70C..................................................1.7W
T
A
85C..................................................1.4W
Electrostatic Discharge, V
ESD
Human body mode...........................-3000 to 3000
(2)
Note:
(1)
: Recommended PCB Layout
(2)
: Human body model : C = 100pF, R = 1500
, 3 positive pulses plus 3 negative pulses
Electrical Characteristics
DC Electrical Characteristics, T
A
=+25C
PARAMETER SYMBOL
CONDITIONS
MIN
TYP
MAX
UNIT
Stereo BTL
---
7
13
V
DD
=3.3V
Stereo SE
---
3.5
8
Stereo BTL
---
8
16
Supply Current
I
DD
V
DD
= 5V
Stereo SE
---
4
10
mA
DC Differential Output Voltage
V
O(DIFF)
V
DD
= 5V,Gain = 2
---
5
50
mV
Stereo BTL
8
16
Supply Current in Mute Mode
I
DD(MUTE)
V
DD
= 5V
Stereo SE
---
4 10
mA
I
DD
in Shutdown
I
SD
V
DD
= 5V
---
2
5
A
(AC Operation Characteristics, V
DD
= 5.0V, T
A
=+25C, R
L
= 4
, unless otherwise noted)
PARAMETER SYMBOL
CONDITIONS
MIN
TYP
MAX
UNIT
THD = 1%, BTL, R
L
= 4
--- 1.8 ---
THD = 1%, BTL, R
L
= 8
--- 1.12 ---
THD = 10%, BTL, R
L
= 4
--- 2 ---
THD = 10%, BTL, R
L
= 8
--- 1.4 ---
W
THD = 1%, SE, R
L
= 4
--- 500 ---
THD = 1%, SE, R
L
= 8
--- 320 ---
THD = 10%, SE, R
L
= 4
--- 650 ---
THD = 10%, SE, R
L
L = 8
--- 400 ---
Output power (each channel) see Note
P
(OUT)
THD = 0.5%, SE, R
L
= 32
--- 90 ---
mW
P
O
= 1.6W, BTL, R
L
= 4
--- 500 ---
P
O
= 1W, BTL, R
L
= 8
--- 150 ---
P
O
= 75mW, SE, R
L
= 32
--- 20 ---
Total harmonic distortion plus noise
THD+N
V
I
= 1V, RL = 10K
, G = 1
--- 10 ---
m%
Maximum output power bandwidth
B
OM
G = 1, THD = 1%
---
20
---
kHz
Phase margin
R
L
= 4
, Open Load
--- 60 ---
Power supply ripple rejection
PSRR
f = 120Hz
---
75
---
dB
Mute
attenuation
--- 85 --- dB
Channel-to-channel output separation
f = 1kHz
---
82
---
dB
Line/HP input separation
---
80
---
dB
BTL attenuation in SE mode
---
85
---
dB
Input impedance
ZI
---
2
---
M
Signal-to-noise ratio
P
O
= 500mW, BTL
---
90
---
dB
Output noise voltage
V
n
Output noise voltage
---
55
---
V (rms)
Note :Output power is measured at the output terminals of the IC at 1kHz.
Ver: 1.5
Aug 04, 2005
TEL: 886-3-5788833
http://www.gmt.com.tw
3
G1420
Global Mixed-mode Technology Inc.
(AC Operation Characteristics, V
DD
= 3.3V, T
A
=+25C, R
L
= 4
, unless otherwise noted)
PARAMETER SYMBOL
CONDITIONS
MIN
TYP
MAX
UNIT
THD = 1%, BTL, R
L
= 4
--- 0.8 ---
THD = 1%, BTL, R
L
= 8
--- 0.5 ---
THD = 10%, BTL, R
L
= 4
--- 1 ---
THD = 10%, BTL, R
L
= 8
--- 0.6 ---
W
THD = 1%, SE, R
L
= 4
--- 230 ---
THD = 1%, SE, R
L
= 8
--- 140 ---
THD = 10%, SE, R
L
= 4
--- 290 ---
THD = 10%, SE, R
L
L = 8
--- 180 ---
Output power (each channel) see Note
P
(OUT)
THD = 0.5%, SE, R
L
= 32
--- 43 ---
mW
P
O
= 1.6W, BTL, R
L
= 4
--- 270 ---
P
O
= 1W, BTL, R
L
= 8
--- 100 ---
P
O
= 75mW, SE, R
L
= 32
--- 20 ---
Total harmonic distortion plus noise
THD+N
V
I
= 1V, RL = 10K
, G = 1
--- 10 ---
m%
Maximum output power bandwidth
B
OM
G = 1, THD 1%
---
20
---
kHz
Phase margin
R
L
= 4
, Open Load
--- 60 ---
Power supply ripple rejection
PSRR
f = 120Hz
---
75
---
dB
Mute
attenuation
--- 85 --- dB
Channel-to-channel output separation
f = 1kHz
---
80
---
dB
Line/HP input separation
---
80
---
dB
BTL attenuation in SE mode
---
85
---
dB
Input impedance
ZI
---
2
---
M
Signal-to-noise ratio
P
O
= 500mW, BTL
---
90
---
dB
Output noise voltage
V
n
Output noise voltage
---
55
---
V (rms)
Note :Output power is measured at the output terminals of the IC at 1kHz.
Ver: 1.5
Aug 04, 2005
TEL: 886-3-5788833
http://www.gmt.com.tw
4
G1420
Global Mixed-mode Technology Inc.
Typical Characteristics
Table of Graphs
FIGURE
vs Output Power
1,3,6,9,10,13,16,19,22,25,28,31
THD +N Total Harmonic Distortion Plus
Noise
vs Frequency
2,4,5,7,8,11,12,14,15,17,18,20,21,23,24,26,27,29,30,32,33
Output Noise Voltage
vs Frequency
34,35
Supply Ripple Rejection Ratio
vs Frequency
36,37
Crosstalk vs
Frequency
38,39,40,41
V
n
Closed Loop Response
vs Frequency
42,43,44,45
I
DD
Supply Current
vs Supply Voltage
46
vs Load Resistance
47,48
P
O
Output
Power
vs Load Resistance
49,50
P
D
Power Dissipation
vs Output Power
51,52,53,54
0 .01
10
0 .02
0 .05
0.1
0.2
0.5
1
2
5
%
2 0
20k
50
10 0
2 00
5 00
1k
2 k
5 k
10 k
Hz
0 .01
10
0 .02
0 .05
0.1
0.2
0.5
1
2
5
%
3 m
3
5 m
10m
20m
5 0m
1 00m
20 0m
500 m
1
2
W
0 .01
10
0 .02
0 .05
0.1
0.2
0.5
1
2
5
%
3 m
3
5 m
10m
20m
5 0m
1 00m
20 0m
500 m
1
2
W
0 .01
10
0 .02
0 .05
0.1
0.2
0.5
1
2
5
%
2 0
20k
50
10 0
2 00
5 00
1k
2 k
5 k
10 k
Hz
VDD=5V
RL=3
BTL
20kHz
1kHz
20 Hz
VDD=5V
RL=3
BTL
Av=-2V/V
Po=1.8W
Po=1.5W
VDD=5V
RL=4
BTL
20kHz
1kHz
20 Hz
VDD=5V
RL=4
BTL
Po=1.5W
Av=-1V/V
Av=-4V/V
Av=-2V/V
Figure 1
Figure 2
Figure 3
Figure 4
Total Harmonic Distortion Plus
Noise vs Output Power
Total Harmonic Distortion Plus
Noise vs Output Frequency
Total Harmonic Distortion Plus
Noise vs Output Power
Total Harmonic Distortion Plus
Noise vs Output Frequency
Ver: 1.5
Aug 04, 2005
TEL: 886-3-5788833
http://www.gmt.com.tw
5
G1420
Global Mixed-mode Technology Inc.
0.01
10
0.02
0.05
0.1
0.2
0.5
1
2
5
%
2 0
20k
50
10 0
200
5 00
1k
2k
5k
10k
Hz
0.01
10
0.02
0.05
0.1
0.2
0.5
1
2
5
%
3 m
3
5 m
10m
20m
50m
100m
200m
500 m
1
2
W
0.01
10
0.02
0.05
0.1
0.2
0.5
1
2
5
%
2 0
20k
50
10 0
200
5 00
1k
2k
5k
10k
Hz
0.01
10
0.02
0.05
0.1
0.2
0.5
1
2
5
%
2 0
20k
50
10 0
200
5 00
1k
2k
5k
10k
Hz
0.01
10
0.02
0.05
0.1
0.2
0.5
1
2
5
%
1m
1
2m
5m
1 0m
20m
50 m
100m
200m
500m
W
0.01
10
0.02
0.05
0.1
0.2
0.5
1
2
5
%
1m
1
2m
5m
1 0m
20m
50 m
100m
200m
500m
W
VDD=5V
RL=4
BTL
Av=-2V/V
Po=1.5W
Po=0.75W
Po=0.25W
VDD=5V
RL=8
BTL
Av=-2V/V
20kHz
1kHz
20Hz
VDD=5V
RL=8
BTL
Av=-2V/V
Po=1W
Po=0.25W
Po=0.5W
VDD=5V
RL=8
BTL
Po=1W
Av=-4V/V
Av=-2V/V
Av=-1V/V
VDD=3.3V
RL=3
BTL
20kHz
1kHz
20Hz
VDD=3.3V
RL=4
BTL
20kHz
1kHz
20Hz
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9
Figure 10
Total Harmonic Distortion Plus
Noise vs Output Frequency
Total Harmonic Distortion Plus
Noise vs Output Power
Total Harmonic Distortion Plus
Noise vs Output Frequency
Total Harmonic Distortion Plus
Noise vs Output Frequency
Total Harmonic Distortion Plus
Noise vs Output Power
Total Harmonic Distortion Plus
Noise vs Output Power