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SY100EP195V Datasheet

  • SY100EP195V

  • 3.3V/5V 2.5GHz PROGRAMMABLE DELAY CHIP

  • 18頁(yè)

  • MICREL   MICREL

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Micrel
3.3V/5V 2.5GHz
PROGRAMMABLE DELAY CHIP
ECL Pro廬
SY100EP195V
ECL Pro廬
SY100EP195V
FEATURES
s
Pin-for-pin, plug-in compatible to the ON
Semiconductor MC100EP195
s
Maximum frequency > 2.5GHz
s
Programmable range: 2.2ns to 12.2ns
s
10ps increments
s
PECL mode operating range: V
CC
= 3.0V to 5.5V
with V
EE
= 0V
s
NECL mode operating range: V
CC
= 0V
with V
EE
= 鈥?.0V to 鈥?.5V
s
Open input default state
s
Safety clamp on inputs
s
A logic high on the /EN pin will force Q to logic low
s
D[0:10] can accept either ECL, CMOS, or TTL inputs
s
V
BB
output reference voltage
s
Available in a 32-pin TQFP package
ECL Pro廬
DESCRIPTION
The SY100EP195V is a programmable delay line, varying
the time a logic signal takes to traverse from IN to Q. This
delay can vary from about 2.2ns to about 12.2ns. The input
can be PECL, LVPECL, NECL, or LVNECL.
The delay varies in discrete steps based on a control
word presented to SY100EP195V. The 10-bit width of this
latched control register allows for delay increments of
approximately 10ps.
An eleventh control bit allows the cascading of multiple
SY100EP195V devices, for a wider delay range. Each
additional SY100EP195V effectively doubles the delay range
available.
For maximum flexibility, the control register interface
accepts CMOS or TTL level signals, as well as the input
level at the IN鹵 pins.
All support documentation can be found on Micrel鈥檚 web
site at www.micrel.com.
APPLICATIONS
s
Clock de-skewing
s
Timing adjustment
s
Aperture centering
CROSS REFERENCE TABLE
Micrel Semiconductor
SY100EP195VTI
SY100EP195VTITR
ON Semiconductor
MC100EP195FA
MC100EP195FAR2
TYPICAL APPLICATIONS CIRCUIT
TYPICAL PERFORMANCE
Data Signal
of Unknown Phase
SY100EP195V
CLOCK+
CLOCK鈥?/div>
IN
/IN
D[9:0]
Q
/Q
D
Q+
Flip-Flop
Q鈥?/div>
DELAY (ps)
Delay vs. Tap
12000
10000
8000
6000
4000
2000
0
0
200 400 600 800 1000 1200
TAP (DIGITAL WORD)
CK
CONTROL
LOGIC
ECL Pro is a registered trademark of Micrel, Inc.
M0643-121504
Rev.: C
Amendment: /0
1
Issue Date: December 2004

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