EK74
www.apexanalog.com
© Apex Microtechnology Inc.
All rights reserved
Nov 2018
EK74 Rev A
Evaluation Kit
INTRODUCTION
This easy to use kit provides a platform with good circuit board layout and grounding to evaluate Power
Amplifier PA165. With additional prototype area, it is flexible enough to analyze a multitude of standard or
proprietary circuit configurations. All components are provided with the kit. The evaluation kit consists of a
PA165, which is mounted on a daughter board along with input protection diodes, power supply bypass
capacitors, and compensation capacitors.
The Evaluation kit also consists of few passive components and connectors that should be soldered on
the board. These components are not presoldered so as to provide flexibility to the user for changing ampli‐
fier configuration as per the users application.
Figure 1: EK74 Circuit Configuration Diagram
+VB
+VS
OUT_2
-VS
-VB
GND
+IN
OUT_1
VTMP
GND
+5V
PDWN
OCFLG
-IN
GND
OUT
-VS
ILIM+
-VB
CC2
CC1
-IN
+IN
VT
M
P
+V
S
+V
B
OC
FL
G
ILIM-
GND
PD
W
N
+5V
EVAL77 BOARD
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
PA165
GND
J1B
PF2
PF1
PF0
17
18
19
20
J1A
N/C
N/C
N/C
N/C
N/C
P2
P8
P6
P12
P5
P3
RT2
51
P10
P11
P15
P17
P16
P14
P13
1
2
3
4
HS36
HEATSINK_HS36_ECO_REG
P1
RT1
51
21
D2
400V
21
D1
400V
TP12-1
TP11-1
CN
RN
C1
470uF
C2
470uF
TP2-1
TP1-1
P7
TP10-1
TP3-1
TP8-1
TP5-1
TP6-1
TP7-1
TP16-1
TP17-1
TP13-1
TP14-1
TP15-1
RIN1
2K
RIN2
2K
RFB1
49.9
K
RFB2
RISO
RLIM
0.2 Ohm
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
CFB1
10pF
RS
P4
TP4-1
17
18
19
20
-VS
+VS
