sy89295u Micrel Semiconductor, sy89295u Datasheet

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sy89295u

Manufacturer Part Number
sy89295u
Description
Sy89295u 2.5v/3.3v 1.5ghz Precision Lvpecl Programmable Delay
Manufacturer
Micrel Semiconductor
Datasheet

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Micrel, Inc.
Precision Edge is a registered trademark of Micrel, Inc.
Micro LeadFrame and MLF are trademarks of Amkor Technology, Inc.
M9999-011806
hbwhelp@micrel.com or (408) 955-1690
FEATURES
APPLICATIONS
Precision LVPECL programmable delay line
Guaranteed AC performance over temperature and
voltage:
• > 1.5GHz f
• < 160ps rise/fall times
Low-jitter design:
• < 10ps
• < 2ps
• < 1ps
Programmable delay range: 3.2ns to 14.8ns in 10ps
increments
Increased monotonicity over the MIC100EP195
V
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
TQFP packages
Clock de-skewing
Timing adjustments
Aperture centering
10% of LSB INL
BB
output reference voltage
RMS
RMS
PP
total jitter
cycle-to-cycle jitter
random jitter
MAX
5mm) MLF™ and 32-pin
2.5V/3.3V 1.5GHz PRECISION
LVPECL PROGRAMMABLE DELAY
1
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
temperature range (–40 C to +85 C).
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.
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
website at www.micrel.com.
10% power supply, and is guaranteed over the full industrial
DESCRIPTION
The SY89295U is a programmable delay line that delays
The delay varies in discrete steps based on a control
For applications that requires an analog delay input, see
All support documentation can be found on Micrel’s
Precision Edge
®
product line.
Rev.: C
Issue Date: January 2006
Precision Edge
Precision Edge
SY89295U
Amendment: /0
SY89295U
®
®
®

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sy89295u Summary of contents

Page 1

... PRECISION LVPECL PROGRAMMABLE DELAY DESCRIPTION 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. 3.3V 10% power supply, and is guaranteed over the full industrial temperature range (– ...

Page 2

... Precision Edge Operating Package Range Marking Industrial SY89295U Industrial SY89295U Industrial SY89295U Industrial SY89295U Industrial SY89295U with Pb-Free bar-line indicator Industrial SY89295U with Pb-Free bar-line indicator Industrial SY89295U with Pb-Free bar-line indicator Industrial SY89295U with Pb-Free bar-line indicator = electricals only. A LEN ...

Page 3

... SETMAX D[10 M9999-011806 hbwhelp@micrel.com or (408) 955-1690 512 256 128 10-bit Latch Latch 3 Precision Edge CASCADE /CASCADE ® SY89295U ...

Page 4

... Positive Power Supply: Bypass with 0.1 F and 0.01 F low ESR capacitors. LVPECL Differential Output: The outputs are used when cascading two or more SY89295U to extend the delay range. LVPECL Single-Ended Control Input: When LOW delayed from IN. When HIGH differential LOW. /EN contains a pull-down and defaults LOW when left floating. ...

Page 5

... Typ Max 2.375 2.5 2.625 3 3.3 3.6 220 150 1200 300 2400 V +1 Min Typ Max 2.075 2.420 1.355 1.675 1.775 1.875 1.975 1.9 2.0 2.1 1.55 1.65 1.75 Min Typ Max 1.275 1.62 0.555 0.875 1.175 1.075 0.975 1.10 1.20 1.30 1.15 1.25 1.35 ® SY89295U Units Units Units ...

Page 6

... Condition 6 Precision Edge (5) Min Typ Max 2.155 2.280 2.405 1.355 1.480 1.605 550 800 1.1 1.6 (5) Min Typ Max 1.355 1.480 1.605 0.555 0.68 0.805 550 800 1.1 1.6 Min Typ Max 2.0 0.8 40 -300 and V OH ® SY89295U Units Units Units ...

Page 7

... INL = measured output edges will deviate by more than the specified peak-to- ® Precision Edge SY89295U Max Units GHz 4200 ps 14800 ps 4400 ps 670 ...

Page 8

... D[9:0] M9999-011806 hbwhelp@micrel.com or (408) 955-1690 = 25 C, unless otherwise stated. A 1000 8 Precision Edge SY89295U Amplitude vs. Frequency 900 800 700 600 500 400 300 200 100 0 0 500 1000 1500 2000 2500 FREQUENCY (MHz) ® ...

Page 9

... INPUT AND OUTPUT STAGES 75k IN / 75k 75k Figure 2a. Differential Input Stage M9999-011806 hbwhelp@micrel.com or (408) 955-1690 800mV (Typ.) OUT 9 Figure 2b. Single-Ended Input Stage 9 Precision Edge V , DIFF_IN V 1.6V (Typ.) DIFF_OUT Figure 1b. Differential Voltage Swing Figure 3. LVPECL Output Stage ® SY89295U ...

Page 10

... R1 Q 130 +3. — +3.3V +3. 130 For +2.5V systems R1 = 250 , 1.25k , R4 = 1.2k Figure 6. Terminating Unused I/O 10 Precision Edge For +2.5V systems (optional 0.01 F Figure 5. Y-Termination R3 1k +3.3V R4 1.6k ® SY89295U ...

Page 11

... SY89295U adds about 3.2ns to the minimum delay and BB adds another 10240ps to the delay range. Internal cascade circuitry has been included in the SY89295U. Using this internal circuitry, the SY89295U may is used, as shown be cascaded without any external gating. BB Examples of cascading SY89295U appear in Figures 7, 8, and 9. Control Word (11bits) C[10] D[10] C[9:0] D[9:0] #1 ...

Page 12

... Micrel, Inc /IN /Q SETMIN SETMAX M9999-011806 hbwhelp@micrel.com or (408) 955-1690 Control Word (12bits) C[11] D[10 /IN /Q /IN SETMIN SETMIN /CASCADE SETMAX SETMAX CASCADE Figure 9. Cascading Four SY89295U 12 Precision Edge C[10] D[10] #4 C[9:0] D[9: /IN /Q /CASCADE CASCADE ® SY89295U ...

Page 13

... Data Sheet Link www.micrel.com/product-info/products/sy89295u.shtml www.micrel.com/product-info/products/sy89296u.shtml www.amkor.com/products/notes_papers/MLF_appnote_0902.pdf http://www.micrel.com/product-info/as/solutions.shtml 13 Precision Edge V = +3.3V CC LVPECL D[0:10] Signals Figure 11 Biasing for CF EF LVPECL Control (D) Input V CC TTL D[0:10] Inputs 1.5k 0.01µ Figure 14 Biasing for CF EF LVTTL Control (D) Input ® SY89295U = +3.3V ...

Page 14

... Exposed pads must be soldered to a ground for proper thermal management. M9999-011806 hbwhelp@micrel.com or (408) 955-1690 CompSide Island Heat Dissipation Heavy Copper Plane Heavy Copper Plane PCB Thermal Consideration for 32-Pin MLF™ Package (Always solder, or equivalent, the exposed pad to the PCB) 14 Precision Edge SY89295U Package EP- Exposed Pad Die ® ...

Page 15

... Micrel Products for use in life support appliances, devices or systems is at Purchaser’s own risk and Purchaser agrees to fully indemnify M9999-011806 hbwhelp@micrel.com or (408) 955-1690 + 1 (408) 474-1000 FAX WEB Micrel for any damages resulting from such use or sale. © 2006 Micrel, Incorporated. 15 Precision Edge Rev. 01 http://www.micrel.com ® SY89295U ...

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