sy89297u Micrel Semiconductor, sy89297u Datasheet

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sy89297u

Manufacturer Part Number
sy89297u
Description
Sy89297u 2.5v, 3.2gbps Precision Cml Dual-channel Programmable Delay
Manufacturer
Micrel Semiconductor
Datasheet

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
sy89297uMG
Manufacturer:
Micrel Inc
Quantity:
135
Part Number:
sy89297uMH
Manufacturer:
Micrel
Quantity:
200
General Description
The SY89297U is a DC-3.2Gbps programmable, two-
channel delay line. Each channel has a delay range from
2ns to 7ns (5ns delta delay) in programmable increments
as small as 5ps. The delay step is extremely linear and
monotonic over the entire programming range, with 20ps
INL over temperature and voltage.
The delay varies in discrete steps based on a serial control
word provided by the 3-pin serial control (SDATA, SCLK,
and SLOAD). The control word for each channel is 10-bits.
Both channels are programmed through a common serial
interface. For increased delay, multiple SY89297U delay
lines can be cascaded together.
The SY89297U provides two independent 3.2Gbps delay
lines in an ultra-small 4mm x 4mm, 24-pin MLF
For other delay line solutions, consider the SY89295U and
SY89296U single-channel delay lines. Evaluation boards
are available for all these parts.
Datasheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
Precision Edge is a registered trademark of Micrel, Inc.
MicroLeadFrame and MLF are registered trademarks of Amkor, Inc.
Apr. 15, 2008
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (
®
package.
Features
• Dual-channel, programmable delay line
• Serial programming interface (SDATA, SCLK, SLOAD)
• Guaranteed AC performance over temperature and
• Programming Accuracy:
• Low-jitter design: 2ps
• Programmable delay range: 5ns delay range
• Cascade capability for increased delay
• Low voltage operation: 2.5V ± 5%
• Temperature range: 0°C to +75°C
• Available in 24-pin (4mm x 4mm) MLF
Applications
• Clock de-skewing
• Timing adjustments
• Aperture centering
• System calibration
Markets
• ATE
• Digital radio and video broadcasting
• Closed caption encoders/decoders
• Test and measurement
408
2.5V, 3.2Gbps Precision CML Dual-Channel
voltage:
– > 3.2Gbps/1.6GHz f
– Linearity: -15ps to +20ps INL
– Monotonic: -10ps to +20ps
– Resolution: 5ps programming increments
) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
Programmable Delay
SY89297U
hbwhelp@micrel.com
Rev. 04/15/08-A3
RMS
MAX
typical random jitter
®
or (408) 955-1690
M9999-041508-A
(QFN)
Precision Edge
®

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sy89297u Summary of contents

Page 1

... Both channels are programmed through a common serial interface. For increased delay, multiple SY89297U delay lines can be cascaded together. The SY89297U provides two independent 3.2Gbps delay lines in an ultra-small 4mm x 4mm, 24-pin MLF For other delay line solutions, consider the SY89295U and SY89296U single-channel delay lines ...

Page 2

... Pb-Free bar line indicator Commercial Pb-Free bar-line indicator = 25°C, DC electricals only. A ® 24-Pin MLF (MLF-24) Outputs /QA Low /Q = HIGH IN, /IN Delayed (normal operation) 2 Lead Finish 297U with Pb-Free NiPdAu 297U with Pb-Free NiPdAu hbwhelp@micrel.com SY89297U M9999-041508-A or (408) 955-1690 ...

Page 3

... Micrel, Inc. Functional Block Diagram Apr. 15, 2008 3 hbwhelp@micrel.com SY89297U M9999-041508-A or (408) 955-1690 ...

Page 4

... LOW when left floating. CMOS/TTL-compatible output: This pin is used to support cascading multiple SY89297U delay lines. Serial data is clocked into the SDATA input and is clocked out of SOUT into the next SY89297U delay line. SOUT pin includes an internal 550Ω pull-up resistor. 4 SY89297U ...

Page 5

... A (4) (θ ® ............................................................................... Still-Air ® (ψ ...................................................... Junction-to-Board Min Typ 2.375 2.5 195 100 1.2 0 0.1 0.2 V –1.3 V –1 hbwhelp@micrel.com SY89297U 61°C/W 30.5°C/W Max Units 2.625 V 250 mA Ω 55 Ω 110 –0 1 –1 1.28 V M9999-041508-A or (408) 955-1690 ...

Page 6

... A Condition R = 50Ω See Figure 5a See Figure 5b (7) Condition V = VCC 0.8V IL SOUT pin; I =1mA OL SOUT = SY89297U Min Typ Max V -0.020 V -0.010 325 400 650 800 Min Typ Max 2.0 ...

Page 7

... TH CC 2000 4150 5115 160 320 640 1280 2560 5115 -15 400 400 300 300 100 200 1000 800 hbwhelp@micrel.com SY89297U Max Units GHz Gbps 2000 7500 ps 2500 4500 + RMS ...

Page 8

... Random jitter definition: Jitter that is characterized by a Gaussian distribution, unbounded and is quantified by its standard deviation and mean. Random jitter is measured with a K28.7 comma defect pattern, measured at 1.5Gbps. Apr. 15, 2008 12 output edges will deviate by more than the specified peak-to- 8 hbwhelp@micrel.com SY89297U M9999-041508-A or (408) 955-1690 ...

Page 9

... Micrel, Inc. Timing Diagrams Apr. 15, 2008 Figure 1. Setup and Hold Time: SDATA and SCLK Figure 2. Setup and Hold Time: SCLK and SLOAD 9 SY89297U M9999-041508-A hbwhelp@micrel.com or (408) 955-1690 ...

Page 10

... Micrel, Inc. Apr. 15, 2008 Figure 3. Set-Up, Hold, and Release Time: IN and /EN Figure 4. SLOAD Pulse Width (TPW) 10 SY89297U M9999-041508-A hbwhelp@micrel.com or (408) 955-1690 ...

Page 11

... Micrel, Inc. Typical Operating Characteristics V = 2.5V, GND = 0V 100mV Apr. 15, 2008 = 100Ω across the outputs 25° SY89297U M9999-041508-A hbwhelp@micrel.com or (408) 955-1690 ...

Page 12

... Micrel, Inc. Functional Operating Characteristics V = 2.5V, GND = 0V 100mV Apr. 15, 2008 = 100Ω across the outputs 25°C, Maximum Delay (D0-D9 = High SY89297U M9999-041508-A hbwhelp@micrel.com or (408) 955-1690 ...

Page 13

... Micrel, Inc. Single-Ended and Differential Swings Figure 5a. Single-Ended Voltage Swing Input and Output Stages Figure 6. Input Stage Apr. 15, 2008 Figure 5b. Differential Voltage Swing Figure 7. CML Output Stage 13 hbwhelp@micrel.com SY89297U M9999-041508-A or (408) 955-1690 ...

Page 14

... CML Output Termination Figure 9a. CML AC-Coupled Termination - 100Ω Differential Apr. 15, 2008 Figure 8b. CML Interface (AC-Coupled) Figure 8e. LVDS Interface (DC-Coupled) Figure 9b. CML AC-Coupled Termination - 50Ω SY89297U Figure 8c. LVPECL Interface (AC-Coupled) Figure 9c. CML AC-Coupled Termination - 50Ω BIAS M9999-041508-A hbwhelp@micrel.com or (408) 955-1690 ...

Page 15

... Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully Apr. 15, 2008 24-Pin (4mm x 4mm) MLF indemnify Micrel for any damages resulting from such use or sale. © 2008 Micrel, Incorporated. 15 ® M9999-041508-A hbwhelp@micrel.com or (408) 955-1690 SY89297U ...

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