SG Micro SGM4703 - Page 16

High-Power Stereo Class-D Audio Power Amplifier
SGM4703 with Adjustable Power Limit and Automatic Level Control
16
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.
Crosstalk vs. Input Frequency
Quiescent Current vs. Supply Voltage
Audio Outputs during ALC Attack
Audio Outputs during ALC Release
V
IN
V
OP
- V
ON
1V/div 5V/div
V
IN
V
OP
- V
ON
1V/div 5V/div
Time (2ms/div)
Time (500ms/div)
Audio Outputs during Startup
Audio Outputs during Shutdown
V
OP
V
ON
V
EN
V
OP
- V
ON
2V/div 2V/div 2V/div 2V/div
V
OP
V
ON
V
EN
V
OP
- V
ON
2V/div 2V/div 2V/div 2V/div
Time (10ms/div)
Time (1ms/div)
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
10 100 1000 10000 100000
Crosstalk (dB)
Frequency (Hz)
Left-to-Right
Right-to-Left
V
DD
= 12V, R
L
= 4Ω + 33μH, P
O
= 10W
0
4
8
12
16
20
24
4 6 8 10 12 14 16 18 20 22 24 26
Quiescent Current (mA)
Supply Voltage (V)
DSM Mode
Inputs AC-Grounded, No Load
SSM Mode
V
DD
= 12V, V
IN
= 0.34V
RMS
to 1.0V
RMS
, R
L
= 4Ω + 33µH,
ALC-1 Mode
V
DD
= 12V, V
IN
= 1.0V
RMS
to 0.34V
RMS
, R
L
= 4Ω + 33µH,
ALC-1 Mode
V
DD
= 12V, V
IN
= 0.1V
RMS
, R
L
= 4Ω + 33µH, f = 500Hz V
DD
= 12V, V
IN
= 0.1V
RMS
, R
L
= 4Ω + 33µH, f = 5kHz