SY89296U Datasheet, PDF (1/15 Pages) Micrel Semiconductor – 2.5V/3.3V 1.5GHz PRECISION LVPECL PROGRAMMABLE DELAY WITH FINE TUNE CONTROL

Micrel, Inc.
2.5V/3.3V 1.5GHz PRECISION
LVPECL PROGRAMMABLE DELAY
WITH FINE TUNE CONTROL
Precision Edge^®
Precision E^Sd^Y8g⁹e^2®96U
SY89296U
FEATURES
■ Precision LVPECL programmable delay line
■ Guaranteed AC performance over temperature and
voltage:
• > 1.5GHz f_MAX
• < 160ps rise/fall times
■ Low jitter design:
• < 10ps_PP total jitter
• < 2ps_RMS cycle-to-cycle jitter
• < 1ps_RMS random jitter
■ Programmable delay range: 3.2ns to 14.8ns in 10ps
increments
■ Increased monotonicity over the MC100EP195
■ ±10% of LSB INL
■ V_BB output reference voltage
■ Parallel inputs accepts LVPECL or CMOS/LVTTL
■ 40ps/V fine tuning range
■ 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^® package or
32-pin TQFP package
Precision Edge^®
DESCRIPTION
The SY89296U 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. Further, the
delay may be varied continuously in about 40ps range by
setting the voltage at the FTUNE pin. 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 SY89296U 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 do not require an analog delay input,
see the SY89295U. 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.
APPLICATIONS
■ Clock de-skewing
■ Timing adjustments
■ Aperture centering
Precision Edge is a registered trademark of Micrel, Inc.
MicroLeadFrame and MLF are registered trademarks of Amkor Technology, Inc.
M9999-072706
[e-mail] or [phone]
1
Rev.: D Amendment: /0
Issue Date: July 2006