SG Micro SGM4703 - Page 14

High-Power Stereo Class-D Audio Power Amplifier
SGM4703 with Adjustable Power Limit and Automatic Level Control
14
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.
THD+N vs. Output Power
THD+N vs. Output Power
THD+N vs. Output Power
THD+N vs. Input Voltage
THD+N vs. Input Voltage
THD+N vs. Input Frequency
0.001
0.01
0.1
1
10
100
0.01 0.1 1 10 100
THD+N (%)
Output Power (W/CH)
V
DD
= 24V, R
L
= 8Ω + 33μH, Non-ALC Mode
SSM Mode
DSM Mode
0.001
0.01
0.1
1
10
100
0.01 0.1 1 10 100
THD+N (%)
Output Power (W/CH)
V
DD
= 12V, R
L
= 4Ω + 33μH, Non-ALC Mode
SSM Mode
DSM Mode
0.001
0.01
0.1
1
10
100
0.01 0.1 1 10 100
THD+N (%)
Output Power (W)
V
DD
= 15V, R
L
= 3Ω + 15μH, Non-ALC Mode
SSM Mode, PBTL Mode
DSM Mode, PBTL Mode
0.001
0.01
0.1
1
10
100
0.01 0.1 1
THD+N (%)
Input Voltage (V
RMS
)
V
DD
= 24V, R
L
= 8Ω + 33μH
V
DD
= 12V, R
L
= 4Ω + 33μH
Non-ALC Mode
V
DD
= 15V, R
L
= 3Ω + 15μH, PBTL Mode
0.001
0.01
0.1
1
10
100
0.01 0.1 1
THD+N (%)
Input Voltage (V
RMS
)
V
DD
= 12V, R
L
= 4Ω + 33μH, Non-ALC Mode
SSM Mode
DSM Mode
0.001
0.01
0.1
1
10
10 100 1000 10000 100000
THD+N (%)
Input Frequency (Hz)
V
DD
= 18V, R
L
= 8Ω + 33μH, P
O
= 5W/CH
V
DD
= 12V, R
L
= 4Ω + 33μH, P
O
= 5W/CH
V
DD
= 15V, R
L
= 3Ω + 15μH, P
O
= 20W,
PBTL Mode