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Datasheet: G1427F31U (Global Mixed-mode Technology Inc)

2W Stereo Audio Amplifier

 

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Global Mixed-mode Technology Inc
Ver: 1.3
Sep 23, 2005
TEL: 886-3-5788833
http://www.gmt.com.tw
1
G1427
Global Mixed-mode Technology Inc.
2W Stereo Audio Amplifier
6dB\10dB\15.6dB\21.6dB Selectable Gain Settings
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 4
Load
--1.2W/CH (typical) into a 8
Load
Bridge-Tied Load (BTL), Single-Ended (SE)
Stereo 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 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, 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 160A (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
ORDER NUMBER
(Pb free)
TEMP.
RANGE
PACKAGE
G1427F31U
G1427F31Uf
-40C to +85C
TSSOP-24 (FD)
Note: U:Tape & Reel
(FD): Thermal Pad
Pin Configuration
ROUT+
RHPIN
VDD
PVDD
HP/LINE
ROUT-
PC-BEEP
GND/HS
GAIN1
LOUT+
LLINEIN
LPHIN
PVDD
SHUTDOWN
LOUT-
G1427
GND/HS
TSSOP-24
13
24
23
22
21
20
19
18
17
16
15
5
6
7
8
9
10
11
12
1
4
3
2
14
GAIN0
RLINEIN
Thermal
Pad
Top View
Bottom View
GND/HS
GND/HS
RIN
LIN
BYPASS
SE/BTL
ROUT+
RHPIN
VDD
PVDD
HP/LINE
ROUT-
PC-BEEP
GND/HS
GAIN1
LOUT+
LLINEIN
LPHIN
PVDD
SHUTDOWN
LOUT-
G1427
GND/HS
TSSOP-24
13
24
23
22
21
20
19
18
17
16
15
5
6
7
8
9
10
11
12
1
4
3
2
14
GAIN0
RLINEIN
Thermal
Pad
Top View
Bottom View
GND/HS
GND/HS
RIN
LIN
BYPASS
SE/BTL
Ver: 1.3
Sep 23, 2005
TEL: 886-3-5788833
http://www.gmt.com.tw
2
G1427
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
Electrostatic Discharge, V
ESD
Human body mode.......................................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
CONDITION
MIN
TYP
MAX
UNIT
Supply voltage VDD
V
DD
4.5 5 5.5 V
High-Level Input voltage, V
IH
V
IH
SE/ BTL
,
HP/ LINE ,
SHUTDOWN
, GAIN0,
GAIN1
2 --- --- V
Low-Level Input voltage, V
IL
V
IL
SE/ BTL
,
HP/ LINE ,
SHUTDOWN
, GAIN0,
GAIN1
--- --- 0.8 V
DC Differential Output Voltage
V
O(DIFF)
V
DD
= 5V,Gain = 2
---
5
50
mV
Stereo BTL
7.5
13
Supply Current in Mute Mode
I
DD
V
DD
= 5V
Stereo SE
---
4 7
mA
I
DD
in Shutdown
I
SD
V
DD
= 5V
---
160
300
A
(AC Operation Characteristics, V
DD
= 5.0V, T
A
=+25C, R
L
= 4
, unless otherwise noted)
PARAMETER SYMBOL
CONDITION
MIN
TYP
MAX
UNIT
THD = 1%, BTL, R
L
= 4
G=-2V/V
--- 2 ---
THD = 1%, BTL, R
L
= 8
G=-2V/V
--- 1.25 ---
THD = 10%, BTL, R
L
= 4
G=-2V/V
--- 2.5 ---
THD = 10%, BTL, R
L
= 8
G=-2V/V
--- 1.6 ---
W
Output power (each channel) see Note
P
(OUT)
THD = 0.1%, SE, R
L
= 32
--- 85 --- mW
P
O
= 1.6W, BTL, R
L
= 4
G=-2V/V
--- 100 ---
P
O
= 1W, BTL, R
L
= 8
G=-2V/V
--- 60 ---
P
O
= 75mW, SE, R
L
= 32
--- 80 ---
Total harmonic distortion plus noise
THD+N
V
I
= 1V, RL = 10K
, SE
--- 30 ---
m%
Maximum output power bandwidth
B
OM
THD = 5%
---
>15
---
kHz
Power supply ripple rejection
PSRR
F=1kHz, BTL mode G=-2V/V
C
BYP
=1F
--- 68 --- 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
See Table 2
M
Signal-to-noise ratio
P
O
= 500mW, BTL, G=-2V/V
---
90
---
dB
Output noise voltage
V
n
BTL, G=-2V/V, A Weighted filter
---
45
---
V (rms)
Note :Output power is measured at the output terminals of the IC at 1kHz.
Ver: 1.3
Sep 23, 2005
TEL: 886-3-5788833
http://www.gmt.com.tw
3
G1427
Global Mixed-mode Technology Inc.
Typical Characteristics
Table of Graphs
FIGURE
vs Frequency
1,2,7,8,13,14,19,21
vs Output Power
3,4,5,6,9,10,11,12,15,16,17,18,20
THD +N Total Harmonic Distortion Plus
Noise
vs Output Voltage
22
Output Noise Voltage
vs Frequency
27
Supply Ripple Rejection Ratio
vs Frequency
23,24
V
n
Crosstalk vs
Frequency
25,26
P
O
Output Power
vs Load Resistance
28,29
P
D
Power Dissipation
vs Output Power
30,31
0.01
10
0.02
0.05
0.1
0.2
0.5
1
2
5
%
20
20 k
50
100
20 0
5 00
1 k
2k
5k
10k
Hz
Po=0.5W
Po=1W
Po=1.5W
VDD=5V
RL=3
BTL,Av=6dB
0.01
10
0.02
0.05
0.1
0.2
0.5
1
2
5
%
3m
3
5m
10m
20m
50m
100m
200m
500m
1
2
W
VDD=5V
RL=3
BTL,Av=6dB
1kHz
20Hz
15kHz
0.01
10
0.02
0.05
0.1
0.2
0.5
1
2
5
%
20
20k
50
100
200
50 0
1k
2k
5k
10k
Hz
VDD=5V
RL=3
BTL
Po=1.75W
Av=6dB
Av=10dB
Av=15.6dB
Av=21.6dB
0.0 1
1 0
0.0 2
0.0 5
0.1
0.2
0.5
1
2
5
%
3m
3
5m
10m
20m
50 m
100m
200m
500m
1
2
W
VDD=5V
RL=3
BTL,Av=10dB
15kHz
1kHz
20Hz
Figure 1
Figure 2
Figure 3
Figure 4
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
Ver: 1.3
Sep 23, 2005
TEL: 886-3-5788833
http://www.gmt.com.tw
4
G1427
Global Mixed-mode Technology Inc.
0.01
10
0.02
0.05
0.1
0.2
0.5
1
2
5
%
3m
3
5m
10m
20m
50m
100m
200m
50 0m
1
2
W
VDD=5V
RL=3
BTL,Av=15.6dB
15kHz
1kHz
20Hz
0.01
10
0.02
0.05
0.1
0.2
0.5
1
2
5
%
3m
3
5m
10m
20m
50m
100m
200m
500m
1
2
W
VDD=5V
RL=3
BTL,Av=21.6dB
15kHz
1kHz
20Hz
0.01
10
0.02
0.05
0.1
0.2
0.5
1
2
5
%
20
20k
50
100
20 0
500
1k
2k
5k
10k
Hz
VDD=5V
RL=4
BTL,Av=6dB
Po=0.25W
Po=1.5W
Po=1W
0.01
10
0.02
0.05
0.1
0.2
0.5
1
2
5
%
3m
3
5m
10m
20m
50m
100m
200m
50 0m
1
2
W
VDD=5V
RL=4
BTL,Av=6dB
15kHz
1kHz
20Hz
0.0 1
1 0
0.0 2
0.0 5
0.1
0.2
0.5
1
2
5
%
20
20k
50
100
200
50 0
1k
2k
5k
10k
Hz
VDD=5V
RL=4
BTL
Po=
1.75W
Av=21.6dB
Av=6dB
Av=10dB
Av=15.6dB
0.01
10
0.02
0.05
0.1
0.2
0.5
1
2
5
%
3 m
3
5m
10m
20m
50 m
100m
200m
500m
1
2
W
VDD=5V
RL=4
BTL,Av=10dB
20Hz
1kHz
15kHz
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9
Figure 10
Total Harmonic Distortion Plus
Noise vs Output Power
Total Harmonic Distortion Plus
Noise vs Output Power
Total Harmonic Distortion Plus
Noise vs Frequency
Total Harmonic Distortion Plus
Noise vs Frequency
Total Harmonic Distortion Plus
Noise vs Output Power
Total Harmonic Distortion Plus
Noise vs Output Power
Ver: 1.3
Sep 23, 2005
TEL: 886-3-5788833
http://www.gmt.com.tw
5
G1427
Global Mixed-mode Technology Inc.
0.01
10
0.02
0.05
0.1
0.2
0.5
1
2
5
%
3m
3
5m
10m
20m
50m
100m
200m
50 0m
1
2
W
VDD=5V
RL=4
BTL,Av=15.6dB
15kHz
1kHz
20Hz
0.01
10
0.02
0.05
0.1
0.2
0.5
1
2
5
%
3m
3
5m
10m
20m
50m
100m
200m
500m
1
2
W
VDD=5V
RL=4
BTL,Av=21.6dB
15kHz
1kHz
20Hz
0.01
10
0.02
0.05
0.1
0.2
0.5
1
2
5
%
20
20 k
50
100
200
5 00
1k
2k
5k
10k
Hz
Po=1W
Po=0.25W
Po=0.5W
0.01
10
0.02
0.05
0.1
0.2
0.5
1
2
5
%
3m
3
5m
10m
20m
50m
100m
200m
50 0m
1
2
W
VDD=5V
RL=8
BTL,Av=6dB
15kHz
1kHz
20Hz
0.01
10
0.02
0.05
0.1
0.2
0.5
1
2
5
%
20
2 0k
5 0
100
200
500
1k
2k
5k
10k
Hz
VDD=5V
RL=8
BTL,Av=6dB
VDD=5V
RL=8
BTL
Po=1W
Av=21.6dB
Av=15.6dB
Av=6dB
Av=10dB
0.01
10
0.02
0.05
0.1
0.2
0.5
1
2
5
%
3 m
3
5m
10m
20m
50 m
100m
200m
500m
1
2
W
VDD=5V
RL=8
BTL,Av=10dB
15kHz
1kHz
20Hz
Figure 11
Figure 12
Figure 13
Figure 14
Figure 15
Figure 16
Total Harmonic Distortion Plus
Noise vs Output Power
Total Harmonic Distortion Plus
Noise vs Output Power
Total Harmonic Distortion Plus
Noise vs Frequency
Total Harmonic Distortion Plus
Noise vs Frequency
Total Harmonic Distortion Plus
Noise vs Output Power
Total Harmonic Distortion Plus
Noise vs Output Power
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