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SA12 PWM Amplifier
INTRODUCTION
This easy-to-use kit provides a platform for the evaluation of PWM amplifiers using the SA12 pin-out con-
figuration. It can be used to analyze a multitude of standard or proprietary circuit configurations, and is flexi-
ble enough to do most standard amplifier test configurations.
The schematic is shown in Figure 2. Note that all of the components shown on the schematic will proba-
bly not be used for any single circuit. Some components will simply be omitted, while others require installa-
tion of a jumper to complete the signal path.
Only components unique to the EK17 are provided in this kit. Hardware similar to that shown in Figure 4
must be obtained locally.
www.apexanalog.com
Evaluation Kit
Figure 1: PCB
TOP SIDE
TB1
PWR
B OUT
+Vs
A OUT
GND
M I
C
R
O
T
E C H
N
O
L
O
G
Y
EVAL19 R
7
COMPONENT SIDE
+
Rb
+
R1
CVs3
6
C3
J1
R3
SIG
C2
GND
C1
D1
RAMP/-PWM
OR
SIG
+PWM
SHDN
FLAG
GND
5.500
BOTTOM SIDE
© Apex Microtechnology Inc.
All rights reserved
Vcc
12
Ra
IC
R2
4.686
Vcc
SIG
GND
1
IC
R4
SPARE
SPARE
EK17
Jan 2016
EK17U Rev I
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Table of Contents
Related Manuals for Apex Digital SA12
Summary of Contents for Apex Digital SA12
- Page 1 SA12 PWM Amplifier INTRODUCTION This easy-to-use kit provides a platform for the evaluation of PWM amplifiers using the SA12 pin-out con- figuration. It can be used to analyze a multitude of standard or proprietary circuit configurations, and is flexi- ble enough to do most standard amplifier test configurations.
- Page 2 EK17 Figure 2: PCB Schematic A block diagram of the SA12 is shown in Figure 2 along with pcb connections of all the commonly used external components. Your application circuit will not use all of the components. Add those components required by your circuit.
- Page 3 200mA Supply Supply A OUT B OUT 1μF 680μF A OUT B OUT SENSE SENSE 0.1V 1000pF 50 k .01μF SA12 28.1K 100pF CLOCK RAMP/ -PWM CLK IN CLK OUT +PWM SHDN .01μF .01μF +PWM RAMP/-PWM SIG CL/SHDN OR FLAG...
- Page 4 EK17 PARTS LIST Reference Manufacturer Part # Description HS18 Heatsink 364015151327100 Pin Receptacle-0.048-0.064 Dia 1 Bag (12 each) EVAL19 PC Board 60SPG00001 Spacer Grommets TW05 Thermal Washer 1 Box (10 each) C1, C2, C3 1825B105K201N Cap, 1µF, 200V, 10%-R TS01 Terminal Strip 66505, Beau KMH200VN68IM25X40T2 680 µf Cap, United Chemi-Con...
- Page 5 EK17 10. Install components as needed. External connections may be soldered directly or standard banana jacks may be soldered to the large pads at the edge of the PCB. 11. Insert amplifier pins into cage jacks and fasten PCB to heatsink. Figure 4: Mechanical Drawing NEED TECHNICAL HELP? CONTACT APEX SUPPORT! For all Apex Microtechnology product questions and inquiries, call toll free 800-546-2739 in North America.
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