HV7351
ULTRASOUND TX BEAMFORMER
EVALUATION BOARD USER’S GUIDE
2015 Microchip Technology Inc.
DS50002375A-page 15
Chapter 2. Installation and Operation
2.1
GETTING STARTED
The HV7351 Ultrasound Tx Beamformer Evaluation Board is fully assembled and
tested. The board requires external voltage sources.
2.1.1
Additional Tools Required for Operation
• A DC power supply, a bench supply that can produce 3.3V, 5V, -5V, 12V, -12V,
70V and -70V
• An oscilloscope and/or a multi-meter to observe the waveforms and measure
electrical parameters
2.2
SETUP PROCEDURE
To operate the HV7351 Ultrasound Tx Beamformer Evaluation Board, the following
steps must be followed:
1. Connect the supplies correctly to the board as shown in
.
2. Set the voltages and current limits of the supply rails according to
,
before connecting the power connector J4.
WARNING
Read the HV7351 Ultrasound Tx Beamformer Evaluation Board User’s Guide (this
document) fully before proceeding to board setup.
TABLE 2-1:
POWER CONNECTOR DESCRIPTION
Pin Name
Description
1
VCC +3.3V Logic voltage input for V
LL
and CPLD, 200 mA
2
GND 0V, Ground
3
VDD +5.0V HV7351 Board positive V
DD
supply, 50 mA
4
VSS -5.0V HV7351 Board negative V
SS
supply, 50 mA
5
VRN -5.0V to -12V HV7351 Board negative regulator supply, 50 mA
6
VRP +5.0V to +12V HV7351 Board positive regulator supply, 50 mA
7
GND 0V, Ground
8
VNN -3.0V to -70V negative high-voltage supply, 10 mA to 50 mA (
)
9
GND 0V, Ground
10
VPP +3.0V to +70V positive high-voltage supply, 10 mA to 50 mA (
Note 1:
The current limits given for V
PP
and V
NN
are good for the supplied CPLD
program in which B/CW-mode transmission is limited to about 16 cycles.
If the user reprograms the CPLD for more CW cycles, the current limits
need to be similarly increased.