EK66 Evaluation Kit 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. Figure 1: Circuit Configuration Diagram TP10-1 TP11-1 TP12-1 TP14-1 GND GND GND GND 23.7K 23.7K & TP5-1 +V S D3 RED P5 1 2 +V S MUR1100EG CBP1 CBP2 0& 0& R CL BLACK P6 GND GND 10 TP1-1 GND -IN TP6-1 RIN1 J1-1 P1 +V S GND - -IN 475 RT1 I 51 CL J1-13 RISO WHITE P7 DUT OUT RNG OUT RN GND C C RIN2 TP7-1 P2 J1-2 + OUT TP2-1 -V +IN 475 S +IN RT2 WAKE CN 51 CNG GND GND GND UNUSED DUT SOCKET PINS J1-3 TP8-1 N/C OPTO1 ROPTO +OPTO +OPTO J1-4 N/C 1 6 TP9-1 J1-5 N/C GND 5 TP13-1 2 J1-6 WAKE N/C 3 4 GND J1-8 GND N/C 4N33 J1-11 CBP3 N/C CBP4 GND 0& 0 & J1-14 D4 N/C P4 YELLOW 21 -V S MUR1100EG -V S TP4-1 -V S BLACK P3 TP3-1 GND GND XMH1-1 XMH2-1 XMH3-1 XMH4-1 GND MTG. HOLES Apex Microtechnology Inc. Aug 2021 www.apexanalog.com All rights reserved EK66 Rev B D1 1N4148 12 D2 1N4148 2 1 J1-9 J1-10 J1-15 R C J1-7 C C J1-12 Z& Z& Z& EK66 PARTS LIST Reference Manufacturer Part Description QTY Resistors RT1, RT2 PR03000205109JAC00 51, 3W,5% 2 RIN1, RIN2 SFR16S0004750FR500 475,1/2W, 1% 2 RFB1, RFB2 CMF5523K700FHEB 23.7k, 1/2W, 1% 2 R ERG-1SJ120V 12, 1W, 5% 1 LIM ROPTO CMF554K7500FHEB 1 4.75k, 1/2W, 1% Printed Circuit Board EVAL42 EVAL42 Printed Circuit Board 1 Capacitors CBP2, CBP4 RDER73A103K3M1H03A Ceramic, 0.01F, 1kV 2 CBP1, CBP3 RDER73A104K5B1H03B Ceramic, 0.1F, 1kV 2 Diodes 2 D1, D2 1N4148 Diode, Gen. Purpose MUR1100EG 2 D3, D4 Rectifier, Ultra-fast Hardware 146510CJ BNC Connector, pc mount 2 571-0100 Banana Jacks, pc mount 5 91735A190 Screw, Panhead, 8 4 92005A218 Screw, Panhead, M4 2 2221 Standoff, hex, 8 4 Clamp05 Clamp for Heatsink 2 8637-0-15-15-21-27-10-0 Cage Jacks 15 5001 Test Point, pc mini 10 TW15 Thermal Washer 1 HS32 Heat Sink 1 Miscellaneous 1 OPTO1 4N33 Optocoupler 2 EK66 Rev B