SG Micro SGM4703 - Page 7

High-Power Stereo Class-D Audio Power Amplifier
SGM4703 with Adjustable Power Limit and Automatic Level Control
7
DECEMBER 2022
SG Micro Corp
www.sg-micro.com
TEST SETUP FOR ELECTRICAL AND PERFORMANCE CHARACTERISTICS
SGM4703
Supply
INP
VOP
VON
GNDVDD
Measurement
Output
+
AUX-0025
Switching Amplifier
Measurement Filter
Measurement
Input
INN
C
IN
C
IN
C
S
R
INE
R
INE
-
Load
Figure 2. Test Setup Diagram
All parameters specified in Electrical and Typical Performance Characteristics sections are measured according to
the conditions:
1. The two differential inputs are shorted for common-mode input voltage measurement. All other parameters are
taken with input resistors R
INE
= 0kΩ and input capacitors C
IN
= 1μF, unless otherwise specified.
2. The supply decoupling capacitors C
S
= 2 × (10nF + 1μF + 220μF) are placed close to the device.
3. A 33μH inductor was placed in series with the load resistor to emulate a speaker load for all AC and dynamic
parameters.