Supertex inc.
Eight Channel Programmable
High Voltage Ultrasound Transmit Beamformer
Features
►
►
►
►
Eight channels with return to zero
Up to ±70V output voltage
±3.0A output current
Store up to four different patterns
HV7351
General Description
►
Independent programmable delays
►
Single 11x11 QFN-80 package
Application
The Supertex HV7351 is an 8-channel programmable high
voltage ultrasound transmit beamformer. Each channel is
capable of swinging up to ±70V with an active discharge back
to 0V. The outputs can source and sink more than 3.0A to
achieve fast output rise and fall times. The active discharge is
also capable of sourcing and sinking 3.0A for a fast return to
ground. The topology of the HV7351 will significantly reduce
the number of I/O logic control lines needed.
Each pulser has four associated 64-bit shift registers for
storing pre-determined transmit patterns and a 10-bit delay
counter for controlling the transmit time. One of four arbitrary
patterns can be transmitted with adjustable delay, depending
on the data loaded into these shift registers and the delay
counter. The delay counter can be clocked up to 200MHz,
allowing incremental delays down to 5ns.
►
Medical ultrasound imaging
►
NDT, non-destructive testing
►
Arbitrary pattern generator
►
High speed PIN diode driver
Typical Application Circuit
Tx1
HV7351
8-channel
U1
t
DELAY1
Array
Probe
E1
Tx2
t
DELAY2
E2
Tx3
HV7351
8-channel
U2
t
DELAY3
E3
Trigger
HV7351
8-channel
U16
Tx127
t
DELAY127
E127
Tx128
t
DELAY128
E128
Trigger
Doc.# DSFP-HV7351
NR050213
Supertex inc.
www.supertex.com
HV7351
Ordering Information
Part Number
HV7351K6-G
Package Option
80-Lead QFN (11x11)
Packing
176/Tray
Pin Configuration
80
1
-G denotes a lead (Pb)-free / RoHS compliant package
Absolute Maximum Ratings
Parameter
V
LL
, Positive logic supply
DV
DD
, Positive logic supply voltage
PV
DD
, Positive gate drive supply voltage
AV
DD
, Positive analog supply voltage
PV
SS
, Negative gate drive supply voltage
V
PP
, High voltage positive supply voltage
V
NN
, High voltage negative supply voltage
(V
PP
- V
NN
), Differential high voltage supply
V
PF
, Positive floating supply voltage
V
NF
, Negative floating supply voltage
V
RP
, Positive supply for V
NF
regulator
V
RN
, Negative supply for V
PF
regulator
Operating temperature
Storage temperature
Value
-0.5V to 5.5V
-0.5V to 5.5V
-0.5V to 5.5V
-0.5V to 5.5V
+0.5V to -5.5V
-0.5V to +80V
+0.5V to -80V
+160V
V
PP
- 6.0V to V
PP
V
NN
to V
NN
+6.0V
0V to 15V
0V to -15V
-40°C to +125°C
-65°C to +150°C
80-Lead QFN
(top view)
Package Marking
HV7351K6
LLLLLLLLL
YYWW
AAA CCC
L = Lot Number
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
80-Lead QFN
Typical Thermal Resistance
Package
80-Lead QFN
θ
ja
14
O
C/W
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.
Operating Supply Voltages
(T
J
= 25°C unless otherwise specified)
Sym
V
PP
V
NN
V
LL
AV
DD
DV
DD
PV
DD
PV
SS
Parameter
Positive high voltage supply
Negative high voltage supply
Logic interface voltage
Low voltage positive analog
supply voltage
Low voltage positive digital
supply voltage
Low voltage positive gate drive
supply voltage
Low voltage negative gate drive
supply voltage
Min
3.0
-70
2.85
4.75
4.75
4.75
-5.25
Typ
-
-
3.30
5.00
5.00
5.00
-5.00
Max
70
-3.0
3.6
5.25
5.25
5.25
-4.75
Units Conditions
V
V
V
V
V
V
V
---
---
---
---
---
---
---
Doc.# DSFP-HV7351
NR050213
2
Supertex inc.
www.supertex.com
HV7351
Operating Supply Voltages
(cont.)
(T
J
= 25°C unless otherwise specified)
Sym
V
RP
V
RN
TCK
I
TCK
Parameter
Low voltage positive supply for
VNF regulator
Low voltage negative supply for
VPF regulator
Reference voltage logic trip
point for TCK pin
TCK input current
Min
4.75
-12
0.4V
LL
-
Typ
-
-
0.5V
LL
-
Max
12
-4.75
0.6V
LL
±10
Units Conditions
V
V
V
μA
---
---
---
V
TCK
= 0 to V
LL
Regulator Outputs
Sym
V
PF
V
NF
Parameter
(Operating conditions unless otherwise specified, V
LL
= 3.3V, AV
DD
= DV
DD
= PV
DD
= V
RP
= 5.0V, PV
SS
= V
RN
= -5.0V, V
PP
= +70V, V
NN
= -70V, T
J
=25ºC)
Min
V
PP
-5.25
Typ
V
PP
-5.00
Max
V
PP
-4.00
Units Conditions
V
V
4.0µF ceramic capacitor across
V
PF
and V
PP
4.0µF ceramic capacitor across
V
NF
and V
NN
Positive floating gate drive
voltage
Negative floating gate drive
voltage
V
NN
+4.00 V
NN
+5.00 V
NN
+5.25
Electrical Characteristics
Sym
I
VLLQ
I
AVDDQ
I
DVDDQ
I
PVDDQ
I
VRPQ
I
VRNQ
I
PVSSQ
I
VPPQ
I
VNNQ
I
VLLEN
I
AVDDEN
I
DVDDEN
I
PVDDEN
I
VRPEN
I
VRNEN
I
PVSSEN
I
VPPEN
I
VNNEN
Parameter
V
LL
quiescent current
AV
DD
quiescent current
DV
DD
quiescent current
PV
DD
quiescent current
V
RP
quiescent current
V
RN
quiescent current
PV
SS
quiescent current
V
PP
quiescent current
V
NN
quiescent current
(Operating conditions unless otherwise specified, V
LL
=3.3V, AV
DD
= DV
DD
= PV
DD
= V
RP
= 5.0V, PV
SS
= V
RN
= -5.0V, V
PP
= +70V, V
NN
= -70V, T
J
= 25ºC)
Min
-
-
-
-
-
-
-85
-
-
-
-
-
-
-
-650
-100
-
-620
Typ
384
12
12
70
0.3
-0.01
-45
2.6
-1.6
390
600
22
44
450
-350
-44
370
-420
Max
500
30
30
100
6.0
6.0
-
6.0
6.0
500
800
55
100
650
-
-
620
-
Units Conditions
µA
µA
EN = Low, all inputs are static
EN = Low, all inputs are static
µA
µA
µA
µA
µA
µA
µA
µA
µA
EN = Low, all inputs are static
EN = Low, all inputs are static
EN = Low, all inputs are static
EN = High, all inputs are static
EN = High, all inputs are static
EN = High, all inputs are static
EN = High, all inputs are static
EN = High, all inputs are static
EN = High, all inputs are static
V
LL
enabled quiescent current
AV
DD
enabled quiescent current
DV
DD
enabled quiescent current
PV
DD
enabled quiescent current
V
RP
enabled quiescent current
V
RN
enabled quiescent current
PV
SS
enabled quiescent current
V
PP
enabled quiescent current
V
NN
enabled quiescent current
Doc.# DSFP-HV7351
NR050213
3
Supertex inc.
www.supertex.com
HV7351
Electrical Characteristics
(cont.)
Sym
I
VLLCW
I
VPPCW
I
VNNCW
Parameter
V
LL
current at TCK = 80MHz
V
PP
current at CW = 5MHz
V
NN
current at CW = 5MHz
(Operating conditions unless otherwise specified, V
LL
=3.3V, AV
DD
= DV
DD
= PV
DD
= V
RP
= 5.0V, PV
SS
= V
RN
= -5.0V, V
PP
= +70V, V
NN
= -70V, T
J
= 25ºC)
Min
-
-
-
-
Typ
500
25
141
98
Max
-
-
-
-
Units Conditions
µA
mA
mA
mA
V
PP
= +5.0V, V
NN
= -5.0V, EN = High,
CW = High, 80MHz on TCK, 0.5V
LL
on TCK, all 8 channels active at
5.0MHz, No load
I
DVDDCW
DV
DD
current at CW = 5MHz
AC Electrical Characteristics
Sym
f
TCK
f
SCK
t
SU-DIN
t
H-DIN
t
SU-CS1
t
SU-CS2
t
SU-TRIG
t
W-TRIG
t
LHDO
t
HLDO
t
WA1A0
t
SUA1A0
t
HA1A0
t
EN-ON
t
EN-OFF
t
r1
t
f1
t
r2
t
f2
t
r3
t
f3
t
rcw
t
fcw
Parameter
Transmit clock frequency
Serial clock frequency
Set-up time data in to SCK
Hold time SCK to data in
Set-up time CS1 low to SCK
Set-up time CS2 low to SCK
Set-up time TRIG low to TCK
TRIG pulse width
SCK to data out low to high
delay time
SCK to data out high to low
delay time
A1A0 pulse width
Set-up time A1A0 to TRIG rising
edge
Hold time A1A0 to TRIG falling
edge
Device enable time
Device disable time
Output rise time from 0V to +HV
Output fall time from 0V to -HV
Damping output rise time from
-HV to 0V
Damping output fall time from
+HV to 0V
Output rise time from -HV to +HV
Output fall time from +HV to -HV
CW output rise time
CW output fall time
(Operating conditions unless otherwise specified, V
LL
= 3.3V, AV
DD
= DV
DD
= PV
DD
= V
RP
= 5.0V, PV
SS
= V
RN
= -5.0V, V
PP
= +70V, V
NN
= -70V, T
J
= 25ºC)
Min
0
0
0
2.0
2.0
2.0
2.0
2.0
2TCK
3.0
3.0
3.0
3.0
t
W-TRIG
+40
-
-
-
-
-
-
-
-
-
-
-
-
Typ
-
-
-
1.0
1.0
-
-
-
-
9.0
9.0
9.0
9.0
-
20
20
1.0
-
9.0
9.0
9.0
9.0
17
17
9.0
9.0
Max
200
80
70
-
-
-
-
-
-
12
10
12
10
-
-
-
-
100
13
13
13
Units Conditions
MHz
MHz
ns
ns
ns
ns
ns
-
ns
ns
---
No daisy chain
Daisy chained
---
---
---
---
---
---
For D
OUT
1
For D
OUT
2
For D
OUT
1
For D
OUT
2
ns
---
ms
ns
1.0µF capacitor on every VPF and
VNF pin.
---
ns
13
23
23
16
16
ns
Load = 330pF//2.5kΩ
V
PP
= +5.0V, V
NN
= -5.0V,
Load = 330pF//2.5kΩ
Doc.# DSFP-HV7351
NR050213
4
Supertex inc.
www.supertex.com
HV7351
AC Electrical Characteristics
(cont.)
Sym
t
dr1
t
df1
t
dr2
t
df2
t
dr3
t
df3
t
dcwlh
t
dcwhl
Δt
dcwhl
t
JCW
LAT
Parameter
Output propagation delay rise
time 1
Output propagation delay fall
time 1
Output propagation delay rise
time 2
Output propagation delay fall
time 2
Output propagation delay rise
time 3
Output propagation delay fall
time 3
CW output propagation delay
time from low to high
CW output propagation delay
time from high to low
Delay time matching
Delay jitter on rise or fall
Latency
Min
10.85
11.35
11.25
11.75
11.35
11.45
10.45
10.35
-
-
3.5TCK
(Operating conditions unless otherwise specified, V
LL
=3.3V, AV
DD
= DV
DD
= PV
DD
= V
RP
= 5.0V, PV
SS
= V
RN
= -5.0V, V
PP
= +70V, V
NN
= -70V, T
J
= 25ºC)
Typ
13.35
13.85
13.75
14.25
13.85
13.95
12.95
12.85
±0.7
13
3.5TCK
Max
15.85
16.35
16.25
Units Conditions
ns
16.75
16.35
16.45
15.45
ns
15.35
-
-
3.5TCK
ns
ps
-
No Load.
V
PP
= +5.0V, V
NN
= -5.0V,
No Load
P to N, channel-to-channel matching
V
PP
= +5.0V, V
NN
= -5.0V, Load = 50Ω
---
Output P-channel MOSFET to V
PP
, CW = 0
I
OUT
R
ON
C
OSS
Output saturation current
Output ON-resistance
Output capacitance
2.2
-
-
3.2
4.2
62
-
-
-
A
Ω
pF
---
I
OUT
= 100mA
V
PP
- V
OUT
= 25V, f = 1.0MHz
Output N-channel MOSFET to V
NN
, CW = 0
I
OUT
R
ON
C
OSS
Output saturation current
Output ON-resistance
Output capacitance
-
-
-
-3.2
2.4
50
-2.2
-
-
A
Ω
pF
---
I
OUT
= -100mA
V
NN
- V
OUT
= -25V, f = 1.0MHz
Output P-channel MOSFET to V
PP
, CW = 1
I
OUT
R
ON
C
OSS
Output saturation current
Output ON-resistance
Output capacitance
1.2
-
-
1.5
8.0
62
-
-
-
A
Ω
pF
---
I
OUT
= 100mA
V
PP
- V
OUT
= 25V, f = 1.0MHz
Output N-channel MOSFET to V
NN
, CW = 1
I
OUT
R
ON
C
OSS
Output saturation current
Output ON-resistance
Output capacitance
-
-
-
-1.5
6.6
50
-1.2
-
-
A
Ω
pF
---
I
OUT
= -100mA
V
NN
- V
OUT
= -25V, f = 1.0MHz
Doc.# DSFP-HV7351
NR050213
5
Supertex inc.
www.supertex.com
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