SG Micro SGM4703 - Page 13

High-Power Stereo Class-D Audio Power Amplifier
SGM4703 with Adjustable Power Limit and Automatic Level Control
13
DECEMBER 2022
SG Micro Corp
www.sg-micro.com
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
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.
Output Power vs. Input Voltage
Gain vs. Frequency
Output Voltage Limit vs. V
PLIMIT
Output Voltage Limit vs. V
PLIMIT
Output Power vs. V
PLIMIT
Output Power vs. V
PLIMIT
0.01
0.1
1
10
100
0.01 0.1 1 10
Output Power (W)
Input Voltage (V
RMS
)
V
DD
= 15V, R
L
= 3Ω + 15μH
ALC-2 Mode, PBTL Mode
Non-ALC Mode, PBTL Mode
10
14
18
22
26
30
10 100 1000 10000 100000
Gain (dB)
Frequency (Hz)
V
DD
= 12V,
R
L
= 4Ω + 33μH,
Gain = 26dB,
V
IN
= 0.1V
RMS
0
4
8
12
16
20
24
0.6 1.0 1.4 1.8 2.2 2.6 3.0 3.4 3.8
Output Voltage Limit (V)
V
PLIMIT
(V)
No Load
V
DD
= 24V, V
IN
= 1.0V
RMS
, APL Mode
R
L
= 8Ω + 33μH
0
4
8
12
16
0.6 1.0 1.4 1.8 2.2 2.6 3.0
Output Voltage Limit (V)
V
PLIMIT
(V)
No Load
V
DD
= 12V, V
IN
= 0.50V
RMS
, APL Mode
R
L
= 4Ω + 33μH
0
4
8
12
16
20
24
28
32
0.6 1.0 1.4 1.8 2.2 2.6 3.0 3.4 3.8
Output Power (w)
V
PLIMIT
(V)
V
DD
= 24V, R
L
= 8Ω + 33μH,
V
IN
= 1.0V
RMS
, APL Mode
0
4
8
12
16
0.6 1.0 1.4 1.8 2.2 2.6 3.0
Output Power (w)
V
PLIMIT
(V)
V
DD
= 12V, R
L
= 4Ω + 33μH,
V
IN
= 0.50V
RMS
, APL Mode