Setup - Analog Devices EVAL-ADPA1106 User Manual

User Guide
OPERATING THE ADPA1106-EVALZ WITH THE DRAIN BIAS PULSER BOARD

SETUP

The connections required to use the ADPA1106-EVALZ with the
drain bias pulser board are shown in
bias or signals, plug the pulser board into the ADPA1106-EVALZ
so that the P2 header connector of the pulser board connects to
the P5 header of the ADPA1106-EVALZ, and the P3 header of the
pulser board connects to the P4 header of the ADPA1106-EVALZ.
All external supply voltages and control signals are applied to the
J1 thru J4 BNC connectors of the pulser board, which are listed in
Table 3.
Table 3. Pulser Board J1 to J4, TP1 to TP4, and P2 and P3 Header
Connections to the ADPA1106
Header Header Pin Number
J1 Not applicable
J2 Not applicable
J3 Not applicable
J4 Not applicable
J5 Not applicable
TP1 Not applicable
TP2 Not applicable
TP3 Not applicable
TP4 Not applicable
P2 1
2
3, 5, 7, 9 to 15, 17, 19, 21 to 24
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Figure 5. Before applying any
Header Pin Name
VDD
SENSE
PULSE
VGG
PULSED VDD
VDET_BIAS
VDET
VREF
VREF_BIAS
VREF
VREF_BIAS
GND
Figure 5. Setup Block Diagram
EVAL-ADPA1106
Table 3. Pulser Board J1 to J4, TP1 to TP4, and P2 and P3 Header
Connections to the ADPA1106
Header Header Pin Number
4, 6, 8
16, 18, 20
P3 1 to 5, 7, 9, 11 to 17, 19, 21
6, 8, 10
18, 20, 22
23
24
The gate control voltage applied to the J4 connector passes directly
through the pulser board and drives the VGG1 and VGG2 pins of
the ADPA1106. Because the VDD and GND lines carry currents up
to 2 A, the use of heavy gauge twister pair wires is recommended
to minimize voltage drops. To observe the pulsed drain voltage
(PULSED_VDD) that drives the VDD1 and VDD2 pins of the AD-
PA1106, connect an oscilloscope to the J5 coaxial connector on the
pulser board.
Connect a digital pulse generator that can generate 0 V to 5 V
pulses with a pulse width of 100 µs and a duty cycle of 10% to the
pulse input, J3.
To observe and measure the drain current and the ADPA1106
RF output power, use a current probe and a pulsed RF power
meter. If these methods are not available, make approximations as
described in the Making Average to Pulsed Approximations
Header Pin Name
PULSED_VDD
VGG
GND
VGG
PULSED_VDD
VDET
VDET_BIAS
section.
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