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CW01 Schematic ( PDF Datasheet ) - Supertex

Teilenummer CW01
Beschreibung Continuous Wave Transmitter
Hersteller Supertex
Logo Supertex Logo 




Gesamt 8 Seiten
CW01 Datasheet, Funktion
www.DataSheet.co.kr
Supertex inc.
CW01
Four-Channel, Low Phase Noise,
Low Power, Continuous Wave Transmitter
Features
Low phase noise
100V open drain N-channel
High speed D flip-flop
High speed MOSFET gate driver
Up to 200MHz clock input
VDD and VLL undervoltage lockout
Applications
Diagnostic medical ultrasound
Fluid flow measurement
Typical Application Circuit
General Description
The Supertex CW01 is a four-channel, low phase noise,
continuous wave transmit IC. A high speed D flip-flop is
provided to allow the DIN frequency to be aligned to a high
frequency clock. The output N-channel is turned on when a
logic high is clocked into the D flip-flop. Data are clocked in
during the low to high transition.
VD1, VD2, VD3 and VD4 are four individual input supply
voltages for the N-channel output MOSFET gate drivers.
High peak currents are drawn from these gate drives
when the output MOSFETs are switching. To minimize
jitter caused by voltage ripples, each channel has its own
gate drive voltage pin; VD1, VD2, VD3 and VD4. A series
ferrite bead and a decoupling capacitor are recommended
on each VDX pin to minimize output jitter and channel to
channel crosstalk.
Both VDD and VLL have undervoltage lockout to prevent
spurious turn-on.
8.0V
5.0V
0.1µF
2.5V
0.1µF
2.0 to
5.0MHz
96MHz
(one of four channels)
VD1
VDD
OE
VLL
DIN1
CLK
VSS
DIN1
Q1
CLK
VLL VD1
Translator
and Driver
270µH
BAV99
BAV23
HVOUT1
PGND1
Tx
PZT
Supertex inc. 1235 Bordeaux Drive, Sunnyvale, CA 94089 Tel: 408-222-8888 www.supertex.com
Datasheet pdf - http://www.DataSheet4U.net/






CW01 Datasheet, Funktion
www.DataSheet.co.kr
Test Circuits
5.0V
0.1µF
2.5V
0.1µF
DIN
CLK
AC Timing
(one of four channels)
VD1
VDD
OE
VLL
DIN1
CLK
VSS
DIN1
Q1
CLK
VLL VD1
Translator
and Driver
5.0V
0.1µF
2.5V
0.1µF
2.0MHz
80MHz
Phase Noise
(one of four channels)
VD1
VDD
OE
VLL
DIN1
CLK
VSS
DIN1
Q1
CLK
VLL VD1
Translator
and Driver
CW01
8.0V
50Ω
0.1µF
HVOUT1
PGND1
HVOUT
3.0V
390µH
0.1µF
50Ω
0.1µF
HVOUT1
PGND1
HVOUT
50Ω
Typical Performance Curve (Test conditions: VLL = 2.5V, VDD = 5.0V, VD1 = VD2 = VD3 = VD4 = 5.0V, no load)
IDD vs DIN Frequency
30
fCLK = 200MHz
25
20
fCLK = 100MHz
15
fCLK = 50MHz
10
5
00 5 10 15 20 25
Data In Frequency (MHz)
Supertex inc. 1235 Bordeaux Drive, Sunnyvale, CA 94089 Tel: 408-222-8888 www.supertex.com
6
Datasheet pdf - http://www.DataSheet4U.net/

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