Microchip MD1730 Handleiding

Microchip Niet gecategoriseerd MD1730

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 2016 Microchip Technology Inc. DS20005586B-page 1
MD1730
Features
• 8-Channel Ultrasound Continuous Waveform
(CW) Transmitter with Integrated Beamformer
• CW Output ±1V to ±6Vp-p with Low RON
• -160 dbc/Hz Ultra-Low Phase Noise at 1 kHz
Offset and 5 MHz
• 8-Bit Programmable Per-Channel Beamforming
Phase Delay
• 8-Bit Programmable Dividers for CW Frequency
with Input Clock Frequency up to 250 Mhz
• Input Clock Compatible with LVDS/SSTL or
Single-Ended LVCMOS
• LVCMOS 2.5V Logic for the Control I/O pins
• Fast SPI Interface Supports up to 200 MHz
• SPI Interface Supports Daisy Chaining and
Broadcasting Mode
Applications
• Medical Ultrasound Imaging System for
Cardiovascular Application
• Ultrasound Fetal Heart Monitoring Device
• Ultrasound Flow Meter
• Programmable Array Pattern Generator
General Description
The MD1730 is an 8-channel ultra-low phase noise CW
transmitter with integrated beamformer. It is designed
for medical ultrasound imaging systems requiring
high-performance CW Doppler mode. The MD1730
has a dedicated signal path designed to minimize
phase noise to the output. In addition, it has a
high-speed SPI interface that enables CW
beamforming features. The outputs of the MD1730 can
swing up to ±6V and each output has a separate
programmable phase delay. Additionally, by
programming the internal frequency divider register,
the MD1730 can output different CW frequencies from
a single clock source. For instance, when the input
clock frequency is 160 MHz and the frequency divider
is set to 16, an output CW frequency of 5 MHz can be
obtained with a phase delay step size of 6.25 ns, which
translates to an angular resolution of 11.25 degrees.
Package Type
2
CLKN
VLL
EN
CBE1
SDO
CKB1
SPIB
CBE0
CKB0
GND
CLKP
EP
1
3
4
6
7
8
9
37
5
10
GND
TXRW
VGP
MD1730
6x6x0.9 mm 36-lead VQFN*
* Includes Exposed Thermal Pad (EP); see Table 3-1.
VDD
SCK
CSN
SDI
11 1512 13 14 181716
26
27
25
24
22
21
20
19
23
36 35 3134 33 28293032
VGN
CNF
VCW-
CPF
V
CW+
CW2
CW3
CW0
CW1
VGN
CW4
CW5
CW6
CW7
CNF
VCW-
CPF
VCW+
8-Channel Ultra-Low Phase Noise
Continuous Waveform Transmitter with Beamformer
MD1730
DS20005586B-page 2  2016 Microchip Technology Inc.
Block Diagram
0 to +
VC W+
C W0
VP F
VNF
+10V
VG P
E N
+2.5V
VL L
TXR W
S P IB
S DI
C S N
S C K
C L K N
C L K P
LVDS / S S T L
C loc k Input
S P I
&
R egis ters
G ND
C W1
MD1730
Thermal
P ad
-10V
S UB
V L L
C L K
C K B 0
C W7
VP F
VNF
0 to -
VC W-
VCW +
VCW -
HIZ[7: 0]
C P F
VP F
VNF
C NF
S DO
Q
MS B
D
0
C K B 1
C B E 1
V L L
C B E 0
+5V
VDD
VG N
C L K
P HD 7~0[7: 0] C WF D[7: 0]
P HD1[7: 0] C WF D[7: 0]
E NAE NA
Q
C L K C L K
Q
P HD7[7: 0] C WF D[7: 0]
E NA
E NA
Q
C L K C L K
Q
8
64
C L K
S C K
VCW +
VCW -
1uF
1uF 2.2uF
2.2uF
1uF
1uF
1uF
1uF
P HD0[7: 0] C WF D[7: 0]
E NA
E NA
Q
C L K C L K
Q
C W2
C W3
C W4
C W5
C W6
6V
6V
 2016 Microchip Technology Inc. DS20005586B-page 3
MD1730
MD1730 CW Output via HV2201 Application Block Diagram
+10V
V
GP
+2 to +6V
VCW+
CW0
VPF
VNF
EN
+2.5V
V
LL
TXRW
SPIB
SDI
CSN
SCK
CLKN
CLKP
LVDS / SSLT
Clock Input
SPI
&
Registers
GND
CW1
MD1730
Thermal
Pad
-10V
SUB
VLL
CLK
CKB0
CW7
VPF
VNF
-2 to -6V
VCW-
VCW+
VCW-
HIZ[7:0]
CPF
VPF
VNF
CNF
SDO
Q
MSB
D
0
CKB1
CBE1
VLL
CBE0
+5V
V
DD
V
GN
CLK
PHD7~0[7:0] CWFD[7:0]
PHD1[7:0] CWFD[7:0]
ENAENA
Q
CLK CLK
Q
PHD7[7:0] CWFD[7:0]
ENAENA
Q
CLK CLK
Q
PHD0[7:0] CWFD[7:0]
ENAENA
Q
CLK CLK
Q
8
64
CLK
SCK
VCW+
VCW-
XDCR
XDCR
D
LE
CL
SW0
D
LE
CL
SW1
D
LE
CL
SW2
D
LE
SW6
D
LE
CL
SW7
CLK
8-BIT
SHIFT
REGISTER
DIN
DOUT
LEVEL
SHIFTERS
OUTPUT
SWITCHES
VNN VPP CLR LE GND VDD
LATCHES
CL
TX7
EN
SEL
POS
NEG
B/CW
LVL[3:2]
POS[3:2]
NEG[3:2]
VDD2
High Speed
Gate Buers
VDD2
VDD1
VDD1
VSS
VDD1
High Speed
Gate Buers
Control
Logic and
Level
Transla-
tion
GND
MD1715
1 of 2-ch
TC8020
6 of 12-FET
+10V
VDD2
+10V
VDD1
+10V
AVD D
+90V
SP1
+50V
SP2
-90V
SN1
-50V
DP1
DN1
DP2
DN2
SN2
SP3
SN3
DP3
DN3
GP1
GN1
GP2
GN2
GP3
GN3
OP1
ON1
OP2
ON2
OP3
ON3
-10V
VSS
-10V
AVSSPADGND PAD VSUB
TX0
VDD2
High Speed
Gate Buers
VDD2
VDD1
VDD1
VSS
VDD1
High Speed
Gate Buers
Control
Logic and
Level
Transla-
tion
MD1715
1 of 2-ch
TC8020
6 of 12-FET
+10V
VDD2
+10V
VDD1
+10V
AVD D
+90V
SP1
+50V
SP2
-90V
SN1
-50V
DP1
DN1
DP2
DN2
SN2
SP3
SN3
DP3
DN3
GP1
GN1
GP2
GN2
GP3
GN3
OP1
ON1
OP2
ON2
OP3
ON3
-10V
VSS
-10V
AVSSPADGND PAD VSUB
HV2201
8-ch HV Analog Switch
EN
SEL
POS
NEG
B/CW
LVL[1:0]
POS[1:0]
NEG[1:0]
GND
B/CW LE +3.3V-100V +100V
CW/ B
CW_START
FPGA
FPGA

Product specificaties

Merk: Microchip
Categorie: Niet gecategoriseerd
Model: MD1730

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