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© Apex Microtechnology Inc.
All rights reserved
Aug 2018
EK66 Rev A
Evaluation Kit
EK66
APPLICABLE PARTS (SOLD SEPARATELY)
•
PA194
INTRODUCTION
This easy to use kit provides a platform with good circuit board layout and grounding to evaluate PA194
Power Amplifier. The evaluation board provides options to install a load capacitor and series resistor to eval
‐
uate the PA194 for a piezo load. All necessary components are provided with the kit. External connections to
the evaluation kit can be made through the connectors at the edges of the circuit. The circuit provides a line
termination of 50
Ω
.
Figure 1: Circuit Configuration Diagram
DUT
-
+
+V
S
I
CL
OUT
C
C
-V
S
WAKE
4N33
OPTO1
6
5
4
1
2
3
P5
+V
S
RED
TP5-1
+V
S
P1
-IN
P2
+IN
+OPTO
P4
-V
S
P3
GND
GND
XMH1-1 XMH2-1
XMH3-1 XMH4-1
MTG. HOLES
BLACK
YELLOW
TP3-1
GND
TP4-1
-V
S
-V
S
GND
CBP3
0.1μF
CBP4
0.01μ F
GND
GND
GND
GND
GND
GND
GND
GND
TP10-1
GND
TP11-1
GND
TP12-1
GND
TP14-1
GND
UNUSED DUT SOCKET PINS
J1-3
J1-4
J1-5
J1-6
J1-8
J1-11
J1-14
N/C
N/C
N/C
N/C
N/C
N/C
N/C
CN
RN
TP7-1
OUT
BLACK
TP6-1
GND
P6
GND
P7
OUT
WHITE
TP1-1
-IN
TP2-1
+IN
TP8-1
+OPTO
TP9-1
GND
ROPTO
RT2
51
RIN2
475
CNG
RT1
51
RIN1
CBP1
0.1μF
CBP2
0.01μF
D1
1N4148
12
D2
1N4148
1
2
TP13-1
WAKE
J1-9
J1-10
J1-7
C
C
R
C
RNG
J1-2
J1-1
RFB1
23.7K
RFB3
RFB2
CFB
23.7K
J1-15
J1-12
R
CL
10
D3
1
MUR1100EG
2
J1-13
D4
2
1
MUR1100EG
475
RISO
