SY89295U 2.5V/3.3V 1.5GHz PRECISION LVPECL PROGRAMMABLE DELAY0 pages

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Precision Edge®
Micrel, Inc. SY89295U
M9999-011806
hbwhelp@micrel.com or (408) 955-1690
DESCRIPTION
Precision LVPECL programmable delay line
Guaranteed AC performance over temperature and
voltage:
• > 1.5GHz fMAX
• < 160ps rise/fall times
Low-jitter design:
• < 10psPP total jitter
• < 2psRMS cycle-to-cycle jitter
• < 1psRMS random jitter
Programmable delay range: 3.2ns to 14.8ns in 10ps
increments
Increased monotonicity over the MIC100EP195
±10% of LSB INL
VBB output reference voltage
Parallel inputs accepts LVPECL or CMOS/LVTTL
Low voltage operation: 2.5V ±5% and 3.3V ±10%
Industrial –40°C to +85°C temperature range
Available in 32-pin (5mm × 5mm) MLF™ and 32-pin
TQFP packages
FEATURES
2.5V/3.3V 1.5GHz PRECISION
LVPECL PROGRAMMABLE DELAY
Precision Edge®
SY89295U
APPLICATIONS
Clock de-skewing
Timing adjustments
Aperture centering
Rev.: C Amendment: /0
Issue Date: January 2006
The SY89295U is a programmable delay line that delays
the input signal using a digital control signal. The delay can
vary from 3.2ns to 14.8ns in 10ps increments. In addition,
the input signal is LVPECL, uses either a 2.5V ±5% or 3.3V
±10% power supply, and is guaranteed over the full industrial
temperature range (–40°C to +85°C).
The delay varies in discrete steps based on a control
word. The control word is 10-bits long and controls the
delay in 10ps increments. The eleventh bit is D[10] and is
used to simultaneously cascade the SY89295U which allows
for a larger delay range. In addition, the input pins IN and
/IN default to an equivalent low state when left floating.
Further, for maximum flexibility, the control register interface
accepts CMOS or TTL level signals.
For applications that requires an analog delay input, see
the SY89296L which is a programmable delay chip with
fine tune control. The SY89295U and SY89296U are part
of Micrel’s high-speed, Precision Edge® product line.
All support documentation can be found on Micrel’s
website at www.micrel.com.
Precision Edge is a registered trademark of Micrel, Inc.
MicroLeadFrame and MLF are trademarks of Amkor Technology, Inc.
Precision Edge®