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Source Driver. MD2131 Datasheet

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Source Driver. MD2131 Datasheet






MD2131 Driver. Datasheet pdf. Equivalent




MD2131 Driver. Datasheet pdf. Equivalent





Part

MD2131

Description

High Speed Ultrasound Beamforming Source Driver



Feature


Supertex inc. MD2131 High Speed Ultras ound Beamforming Source Driver Feature s ►► High resolution transmitting w aveform ►► Up to 3.0A push-pull sou rce-driving current ►► 230VP-P maxi mum output, uses two DN2625 FETs ►► Angle vector beamforming I-Q switcher matrix ►► 8-bit apodization DAC and 7.5° angular resolution ►► Flexib le frequency-resolution trade-off ►► Progra.
Manufacture

Supertex

Datasheet
Download MD2131 Datasheet


Supertex MD2131

MD2131; mmable aperture windowing ►► 250MHz maximum sampling rate ►► 25MHz ultr asound maximum frequency ►► PWM mod ulation push-pull current source ►► Focusing phase adjustment & chirp wave form ►► Fast SPI interface ►► 2 .5V CMOS logic interface ►► +5.0V s ingle power supply ►► Low second or der harmonic distortions Applications ► Medical ultrasound imaging transmit beamforming .


Supertex MD2131

►► High resolution NDT and Sonar pha se arrays ►► HIFU transducer phase arrays beamforming and focus scanning ► Piezoelectric & MEMS transducer w aveform drivers ►► High speed, hig .


Supertex MD2131

.

Part

MD2131

Description

High Speed Ultrasound Beamforming Source Driver



Feature


Supertex inc. MD2131 High Speed Ultras ound Beamforming Source Driver Feature s ►► High resolution transmitting w aveform ►► Up to 3.0A push-pull sou rce-driving current ►► 230VP-P maxi mum output, uses two DN2625 FETs ►► Angle vector beamforming I-Q switcher matrix ►► 8-bit apodization DAC and 7.5° angular resolution ►► Flexib le frequency-resolution trade-off ►► Progra.
Manufacture

Supertex

Datasheet
Download MD2131 Datasheet




 MD2131
Supertex inc.
MD2131
High Speed Ultrasound Beamforming Source Driver
Features
High resolution transmitting waveform
Up to 3.0A push-pull source-driving current
230VP-P maximum output, uses two DN2625 FETs
Angle vector beamforming I-Q switcher matrix
8-bit apodization DAC and 7.5° angular resolution
Flexible frequency-resolution trade-off
Programmable aperture windowing
250MHz maximum sampling rate
25MHz ultrasound maximum frequency
PWM modulation push-pull current source
Focusing phase adjustment & chirp waveform
Fast SPI interface
2.5V CMOS logic interface
+5.0V single power supply
Low second order harmonic distortions
Applications
Medical ultrasound imaging transmit beamforming
High resolution NDT and Sonar phase arrays
HIFU transducer phase arrays beamforming and
focus scanning
Piezoelectric & MEMS transducer waveform drivers
High speed, high voltage, arbitrary waveform
generator
MD2131 Block Diagram
+2.5V
+5.0V
General Description
The MD2131 is a high-speed, arbitrary waveform, push-pull
source driver. It is designed for medical ultrasound imaging and
HIFU beamforming applications. It also can be used in NDT,
Sonar and other ultrasound phase-array focusing beamforming
applications.
The MD2131 consists of CMOS digital logic input circuits, an
8-bit current DAC for waveform amplitude control, and four PWM
current-sources. These current sources are constructed with the
high-speed, in-phase and quadrature current-switch matrix and
the built-in sine and cosine angle-to-vector look-up table. The
angular resolution of the vector table is 7.5O per step, with a total
range of 48 steps. There are four logic input signals to control the
in-phase and quadrature PWM push-pull current-source’s output
timing, frequency, cycle in the burst and waveform envelope.
The MD2131’s output stage is designed to drive two DN2625
depletion N-type MOSFETs. The MOSFET drains are connected
to a center-tap ultrasound frequency pulse transformer. The
secondary winding of the transformer can connect to the
ultrasound piezo or capacitive transducer via a cable with a
good impendence match. The MD2131 has a high-speed, SPI-
compatible interface to achieve per-scan-line fast updating of the
data register for changing the beamforming phase angles and
apodization amplitudes.
IA
QA
IB
QB
EN
SDI
SDO
SCK
CS
LD
VLL
VDD
C3A C2A
KA C1A
+5.0V +3.3V
Level
Translator
Data
Latch
&
Control
Logic
I
SIN/COS
A Table
&
Level
Translator Q
Vector
Beamforming
Switch
Matrix
SUB
D1
PA
DN2625
GND
+70-100V
VPP
PB DN2625
DAC
DGND
AGND VREF RFB C3B C2B
KB C1B
D2
+5.0V +3.3V
T1
XDRC
Doc.# DSFP-MD2131
C102412
+VREF
Supertex inc.
www.supertex.com




 MD2131
Ordering Information
Part Number Package Option
MD2131K7-G 40-Lead (5x5) QFN
-G indicates package is RoHS compliant (‘Green’)
Packing
490/Tray
Pin Configuration
40
1
MD2131
Absolute Maximum Ratings
Parameter
VLL, Logic supply
VDD, Positive supply
VPA VPB Driver outputs
VSUB, Ground
Operating temperature
Value
-0.5V to +3.5V
-0.5V to +6.0V
-0.5V to +6.0V
0V
0°C to +70°C
40-Lead QFN (K7)
(top view)
Package Marking
L = Lot Number
MD2131
LLLLLL
YYWW
AAACCC
YY = Year Sealed
WW = Week Sealed
A = Assembler ID
C = Country of Origin
= “Green” Packaging
Package may or may not include the following marks: Si or
40-Lead QFN (K7)
Storage temperature
-65°C to +150°C
Absolute Maximum Ratings are those values beyond which damage to the device may
occur. Functional operation under these conditions is not implied. Continuous operation
of the device at the absolute rating level may affect device reliability. All voltages are
referenced to device ground.
Typical Thermal Resistance
Package
θja
40-Lead QFN
* 4”x3”, 4-layer 1oz 16-via PCB
26OC/W*
Operating Supply Voltages
(Over operating conditions unless otherwise specified, VLL = +2.5V, VDD = +5.0V, RFB = 50kΩ, DAC = 0, VREF = 2.5V, TA = 25°C)
Sym Parameter
Min Typ Max Units Conditions
VLL
VDD
ILLQ
IDDQ
ILLEN
IDDEN
ILL50
IDD50
Logic supply
Power supply
VLL supply current EN = 0
VDD supply current EN = 0
VLL supply current EN = 1
VDD supply current EN = 1
VLL supply current EN = 1
VDD supply current EN = 1
2.3
4.75
-
-
-
-
-
-
2.5
5.00
0.1
0.2
5.0
5.0
0.5
80
2.7
5.25
1.0
1.0
20
12
3.0
-
V
V TA = 0 to 70°C
µA Standby condition
µA
mA fCLK = 0, all logic input no transit
mA fCLK = 50MHz, CW, IA, IB, QA, QB = 0
mA EN = 1, IA, IB, QA, QB = 50MHz, CW
Output
Angle = 45°
Characteristics
IA = QA = Hi or IB = QB
(Over operating
= Hi of 1μs, D%
conditions unless otherwise
= 0.1%, TA = 25°C)
specified,
VLL
=
+2.5V,
VDD
=
+5.0V,
VREF
=
2.5V,
RFB
=
50kΩ,
Sym Parameter
Min Typ Max Units Conditions
IMAX-A/B Full scale output peak current
2.88
-
3.52 A DAC = 255
IOO-A/B Output current offset
- 0.5 2.0 mA DAC = 0
VPA, VPB
Output voltage range,
+10% of IPA/B
Output voltage range,
-10% of IPA/B
5.3 5.8
-
IPA/B = 1.0A
5.0 5.5
-
IPA/B = 1.5A
4.5 5.0 - V IPA/B = 3.0A
- 1.0 1.5
IPA/B = 1.0A
- 1.2 1.7
IPA/B = 1.5A
- 1.8 2.3
IPA/B = 3.0A
Doc.# DSFP-MD2131
C102412
Supertex inc.
2 www.supertex.com




 MD2131
MD2131
Aperture DAC Characteristics
(Over operating conditions unless otherwise specified, VLL = +3.3V, VDD = +5V, RFB = 50kΩ, TA = 25°C)
Sym Parameter
Min Typ Max Units Conditions
Reso Resolution
- 8 - Bits ---
ELINEAR
EDNL
MON
Linearity error
Differential nonlinearity error
Monotonicity
-
1.0 3.0
% ±% of FSR
-
0.6 1.0
% ±% of FSR
- 8 - Bits ---
VREF External reference voltage
1.25 - 2.5 V ---
Logic and Data Input Characteristics
(Over operating conditions unless otherwise specified, VLL = +3.3V, VDD = +5V, RFB = 50kΩ, TA = 0 - 70°C)
Sym Parameter
Min Typ Max Units Conditions
VIH Input logic high voltage
0.8VLL
-
VLL V ---
VIL Input logic low voltage
0 - 0.2VLL V ---
IIH Input logic high current
- - 1.0 µA ---
IIL Input logic low current
-1.0 -
- µA ---
AC Electrical Characteristics
(Over operating conditions unless otherwise specified, VLL = +3.3V, VDD = +5V, RFB = 50kΩ, TA = 25°C)
Sym Parameter
Min Typ Max Units Conditions
tST
tr
tf
tdr
tdf
tM
tJ
t1
t2
t3
t4
t5
t6
t7
t8
t9
t10
fSCK
THD
tEN-OFF
tEN-ON
DAC to output setup time
Output current rise time
Output current fall time
Input to output delay on rise
Input to output delay on fall
Delay time matching
Output jitter
SDI valid to SCK setup time
SDI valid to SCK hold time
SCK high time (% of 1/fSCK)
SCK low time (% of 1/fSCK)
CS pulse width
LSB SCK high to CS high
CS low to SCK high
SDO propagation delay from SCK
failing edge
CS high to SCK raising edge
CS high to LD raising edge
Serial clock maximum frequency
Total harmonic distortion
EN fall to PA/PB turn OFF time
EN rise to PA/PB turn ON time
-
-
10
µs
All caps 10nF, DAC = 0 to 255,
settle to 1LSB
-
-
-
2.0
2.0
4.0
3.0
3.0
5.0
1.0Ω resistor load to VDD,
ns
DAC = 85,
Angle = 45O,
- 4.0 5.0
VREF = 2.5V
- ±2.0 ±3.0 ns From PA to PB and device to device
- 50 - ps ---
0 2.0 -
ns See serial interface timing diagram
4.0 -
-
45 - 55
% See serial interface timing diagram
45 - 55
4.0 - 6.0
7.0 -
-
7.0 -
-
ns See serial interface timing diagram
- - 10
7.0 -
-
10 -
-
40 50
- MHz ---
- -45 -40 dB ---
- 5.0 8.0 ns 50% to 90%
- 13.5 20.0 µs 50% to 10%
Doc.# DSFP-MD2131
C102412
Supertex inc.
3 www.supertex.com



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