Microchip Technology HV2918, Руководство пользователя

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HV2918 Analog Switch Evaluation Board User’s Guide
DS500000000A-page 10

2020 Microchip Technology Inc.
1.4 WHAT IS THE HV2918 ANALOG SWITCH EVALUATION BOARD?
The HV2918 Analog Switch Evaluation Board can control the HV2918 device and
built-in pulsers that are connected to the two 2:1 MUX switches for demonstration
through the HV MUX Controller Board and GUI. Four switch outputs (SW pins) from
two 2:1 MUXes have SMA connectors to which the user can connect four transducer
elements. The other side of the 2:1 MUX (Y pins) is connected to the outputs of two
built-in MD1822 and TC6320 pulsers. The HV2918 Analog Switch Evaluation Board
can drive four transducer elements with 5 MHz, ±100V pulse signals.
The HV2918 Analog Switch Evaluation Board features one HV2918/R4X
9 x 9 x 0.9 mm 64-lead VQFN packaged integrated circuit, two MD1822K6-G
3 x 3 x 1 mm 16-lead QFN packaged integrated circuits and four TC6320K6-G
4 x 4 x 1 mm 8-lead DFN packaged NMOS and PMOS paired integrated circuits.
The HV2918 Analog Switch Evaluation Board uses two high-speed 20-signal pairs,
carrying capable right angle backplane connectors, which are designed to work with
the HV MUX Controller Board as a control signal source.
The HV MUX Controller Board has an FPGA that generates pulser waveform and logic
control signals, and a USB bridge IC that connects the control board to a PC. By using
a Microsoft
®
Windows
®
operated PC and the GUI software, the user can control the
HV2918 device and two built-in pulsers on the HV2918 Analog Switch Evaluation
Board.
Four switch terminals, consisting of two 2:1 MUX configurations on the PCB, have SMA
connectors to which the user can connect loads. The jumpers close to the SMA con-
nectors are for connecting the on-board dummy R-C load (330 pF//2.5 k

) optionally
to the pulser output.
1.5 HV2918 ANALOG SWITCH EVALUATION BOARD TECHNICAL
PARAMETERS
WARNING
Risk warning of electrical shock. This board uses multiple hazardous high voltages.
Disconnect all high-voltage supplies before working on it. Electrical safety precautions
must be taken when working on or using this board.
TABLE 1-1: HV2918 ANALOG SWITCH EVALUATION BOARD TECHNICAL
PARAMETERS
Parameter Value
Pulser Frequency 5 MHz
Number of Pulses in the Burst 1 to 90
T
OFF
Time Between Pulse Bursts 5 to 30 ms
Pulse Peak Voltage and Current 0 to ±100V and ±2.7A (typical)
Interface of FPGA Control Signals and USB
PC-GUI Software J1 and J2 Connects to ADM00825 Controller
Interface Board
Pulser R-C Test Load and User’s Transducer
Interface Built-in, 330 pF//2.5 k

per Channel with
Jumper and 50

SMA
PCB Board Dimension 115 mm x 110 mm