HV7321 PDF даташит
Спецификация HV7321 изготовлена «Microchip» и имеет функцию, называемую «High-Voltage Ultrasound Pulser». |
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Детали детали
Номер произв | HV7321 |
Описание | High-Voltage Ultrasound Pulser |
Производители | Microchip |
логотип |
30 Pages
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HV7321
4-Ch. 5-Level ±80V High-Voltage Ultrasound Pulser with T/R Switches
Features
• Power Sequencing Free 5 Output Levels
including RTZ (Return-to-Zero)
• -44 dB Single-Cycle Pulse-Inversion Second
Harmonic Distortion (HD2) at 5 MHz
• Output Voltage up to ±80V
• ±2.5A Peak Output Current
• ±300 mA Current from VPP1/VNN1 in CW Mode-0
• Integrated T/R Switch & RX Damper Switch
• Bleeder Switches Achieve True Zero during RTZ
• Supports Both Transparent and Re-Timing Mode
• Re-Timing Clock Frequency Supports up to
220 MHz
• Built-In Output Protection Diodes and Clamp
Diodes
• +2.5/+3.3V Input Logic
• Built-In CW Switches to Pair with External CW
Transmitters (CW Mode-1)
• 9 mm x 9 mm 64-Lead VQFN Package
Applications
• Medical Ultrasound Imaging Systems
• NDT Ultrasound
• Piezoelectric or Capacitive Transducer Drivers
General Description
The HV7321 is a 4-channel, 5-level, ultrasound
transmitter with built-in T/R switches, output protection
diodes and clamp diodes. The HV7321 can provide up
to ±2.5A and the output voltage swing can be up to
±80V. The HV7321 supports both Transparent and
Re-Timing mode. The re-timing clock frequency can
support up to 220 MHz. The re-timing feature helps
reduce the output jitter introduced by the driving the
field-programmable gate array (FPGA).
The HV7321 has two different modes for
CW transmission, CW-Mode 0 and CW-Mode 1.
In CW-Mode 0 (Mode = 0, PWS = 0), the VPP1 and
VNN1 rails are used for CW transmission. The output
current is reduced in CW Mode-0.
In CW-Mode 1, the HV7321 accepts the output of an
external CW beamformer as CW source.
The HV7321 is LVCMOS 2.5V/3.3V input compatible,
which can be interfaced with the FPGA directly.
The HV7321 is available in a 9 mm x 9 mm 64-Lead
VQFN package.
2016 Microchip Technology Inc.
DS20005639A-page 1
No Preview Available ! |
HV7321
Package Types
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
CWIN0
SEL1
1
2
NEG1 3
POS1 4
CWIN1
OEN
5
6
PWS 7
CLK 8
GND 9
VLL
REN
10
11
SEL2 12
NEG2 13
POS2 14
CWIN2
SEL3
15
16
65
VSUB
48 CPF1
47 VPP1
46 TX0
45 RX0
44 RGND
43 RX1
42 TX1
41 CPOS
40 CNEG
39 TX2
38 RX2
37 RGND
36 RX3
35 TX3
34 VPP1
33 CPF1
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
DS20005639A-page 2
2016 Microchip Technology Inc.
No Preview Available ! |
HV7321 – Block Diagram
+2.5V/3V +5V
2 µF
2 µF
+10V
1 µF
2 µF
0 to +80V
0 to +80V
2 µF 2 µF 100V 2 µF 2 µF 100V
CWIN0-3
MODE
REN
OEN
PWS
OTPN
POS0
NEG0
SEL0
POS3
NEG3
SEL3
CLK
VLL VDD
CPOS
VGP
CPF0
VPP0
CPF1
VPP1
LR
VPOS
LR
VPF0
LR
VPF1
VPOS GND
VPF0 VGN VPP0
VPF1 VGN VPP1
VPP0
VPP1
to
CWSW1-3
CWSW0
Logic
and
Retiming
GND VGN
2 µF
-10V
VPF0
VNF0
VPF0
VNF1
VNEG
VPOS
TX0
TRSW0
Rb
RX0
VNN0
To Ch.
1-3
VNEG GND VGN
SUB
LR
VNEG
VSUB CNEG
VNN1
RTZSW0
RXDMP0
Rb RGND
1 of 4 channels
VNN2 VNF0 VGP VNN0
RGND
VNF1 VGP VNN1
TX1,2,3
LR
VNF0
LR
VNF1
RX1,2,3
VNN2 CNF0
VNN0
CNF1
VNN1
1 µF
1 µF
100V
2 µF 1 µF
100V
0 to -80V
2 µF
2 µF
100V
0 to -80V
X0
RX0
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