SG Micro SGM4703 - Typical Performance Characteristics

High-Power Stereo Class-D Audio Power Amplifier
SGM4703 with Adjustable Power Limit and Automatic Level Control
12
DECEMBER 2022
SG Micro Corp
www.sg-micro.com
TYPICAL PERFORMANCE CHARACTERISTICS
T
A
= +25℃, f = 1kHz, C
IN
= 4 × 1µF, A
V
= 26dB, f
PWM
= 360kHz, SSM Mode, V
PLIMIT
= V
GVDD
, both channels driven (BTL Mode),
unless otherwise specified.
Maximum Output Power vs. Supply Voltage
Maximum Output Power vs. Supply Voltage
Maximum Output Power vs. Supply Voltage
ALC Output Power vs. Supply Voltage
ALC Output Power vs. Supply Voltage
Output Power vs. Input Voltage
0
4
8
12
16
20
24
28
32
36
40
44
6 8 10 12 14 16 18 20 22 24
Maximum Output Power (W/CH)
Supply Voltage (V)
R
L
= 8Ω + 33μH, Non-ALC Mode
Dashed lines indicate
thermally-limited regions
THD+N = 10%
THD+N = 1%
0
8
16
24
32
40
6 8 10 12 14 16 18
Maximum Output Power (W/CH)
Supply Voltage (V)
R
L
= 4Ω + 33μH, Non-ALC Mode
Dashed lines indicate
thermally-limited regions
THD+N = 10%
THD+N = 1%
0
8
16
24
32
40
48
56
64
72
80
6 8 10 12 14 16 18 20 22 24
Maximum Output Power (W/CH)
Supply Voltage (V)
R
L
= 4Ω + 33μH, Non-ALC Mode,
PBTL Mode
Dashed lines indicate
thermally-limited regions
THD+N = 10%
THD+N = 1%
0
10
20
30
40
50
60
6 8 10 12 14 16 18
Maximum Output Power (W)
Supply Voltage (V)
R
L
= 3Ω + 15μH, Non-ALC Mode,
PBTL Mode
Dashed lines indicate
thermally-limited regions
THD+N = 10%
THD+N = 1%
0
10
20
30
40
50
60
6 8 10 12 14 16 18 20 22 24
Maximum Output Power (W)
Supply Voltage (V)
ALC-1 Mode, V
IN
= 1.0V
RMS
Dashed lines indicate
thermally-limited regions
R
L
= 8Ω + 33μH
R
L
= 4Ω + 33μH
0.001
0.01
0.1
1
10
100
0.01 0.1 1 10
Output Power (W/CH)
Input Voltage (V
RMS
)
V
DD
= 24V, R
L
= 8Ω + 33μH, Non-ALC Mode
A
V
= 20dB
A
V
= 26dB
A
V
= 30dB
A
V
= 34dB