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SY56016R
Low Voltage 1.2V/1.8V/2.5V CML Differential Line Driver/Receiver 6.4Gbps with Equalization
General Description
The SY56016R is a fully differential, low voltage 1.2V/1.8V/2.5V CML Line Driver/Receiver with input equalization. The SY56016R can process clock signals as fast as 5.0GHz or data patterns up to 6.4Gbps. The differential input includes Micrel's unique, 3-pin input termination architecture that interfaces to CML differential signals, without any level-shifting or termination resistor networks in the signal path. The differential input can also accept AC-coupled CML, LVPECL, and LVDS signals. Input voltages as small as 200mV (400mVPP) are applied before the 9", 18" or 27" FR4 transmission line. For ACcoupled input interface applications, an internal voltage reference is provided to bias the VT pin. The outputs are CML, with extremely fast rise/fall times guaranteed to be less than 80ps. The SY56016R operates from a 2.5V 5% core supply and a 1.2V, 1.8V or 2.5V 5% output supply and is guaranteed over the full industrial temperature range (-40C to +85C). The SY56016R is part of Micrel's high-speed, (R) Precision Edge product line. Datasheets and support documentation can be found on Micrel's web site at: www.micrel.com.
Precision Edge
(R)
Features
1.2V/1.8V/2.5V CML Differential Line Driver/Receiver with Equalization Equalizes 9, 18, 27 inches of FR4 Guaranteed AC performance over temperature and voltage: - DC-to >6.4Gbps Data throughput - DC-to >5.0GHz Clock throughput - <250ps propagation delay (IN-to-Q) - <80ps rise/fall times Ultra-low jitter design - <1psRMS random jitter High-speed CML outputs 2.5V 5% VCC, 1.2V/1.8V/2.5V 5% VCCO power supply operation Industrial temperature range: -40C to +85C (R) Available in 10-pin (2mm x 2mm) MLF package
Applications
Data Distribution: SONET clock and data distribution Fibre Channel clock and data distribution Gigabit Ethernet clock and data distribution
Functional Block Diagram
Markets
Storage Test and measurement Enterprise networking equipment High-end servers Metro area network equipment
Precision Edge is a registered trademark of Micrel, Inc MLF and MicroLeadFrame are registered trademarks of Amkor Technology, Inc. Micrel Inc. * 2180 Fortune Drive * San Jose, CA 95131 * USA * tel +1 (408) 944-0800 * fax + 1 (408) 474-1000 * http://www.micrel.com
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SY56016R
Ordering Information
Part Number SY56016RMG SY56016RMGTR
Note: 1. Contact factory for die availability. Dice are guaranteed at TA = 25C, DC Electricals only. 2. Tape and Reel.
(2)
Package Type MLF-10 MLF-10
Operating Range Industrial Industrial
Package Marking R016 with Pb-Free bar-line indicator R016 with Pb-Free bar-line indicator
Lead Finish NiPdAu Pb-Free NiPdAu Pb-Free
Pin Configuration
Truth Table
EQ LOW FLOAT HIGH Equalization 9" 18" 27"
10-Pin MLF (MLF-10)
(R)
Pin Description
Pin Number 2, 3 Pin Name IN, /IN Pin Function Differential Input: Signals as small as 200mV VPK (400mVPP) can be applied to the input of 9, 18 or 27 inches 6 mil FR4 stripline transmission line. They are then terminated at the differential input internally with 50 to the VT pin. Input Termination Center-Tap: Each side of the differential input pair terminates to VT pin. This pin provides a center-tap to a termination network for maximum interface flexibility. An internal high impedance resistor divider biases VT to allow input AC coupling. For AC coupling, bypass VT with 0.1F low ESR capacitor to VCC. See "Interface Applications" subsection and Figure 2a. Three level input for equalization control. High, float, low. Positive Power Supply: Bypass with 0.1F//0.01F low ESR capacitors as close to the VCC pin as possible. Supplies input and core circuitry. Output Supply: Bypass with 0.1F//0.01F low ESR capacitors as close to the VCCO pins as possible. Supplies the output buffer. Ground: Exposed pad must be connected to a ground plane that is the same potential as the ground pin. CML Differential Output Pair: Differential buffered copy of the input signal. The output swing is typically 390mV. See "Interface Applications" sub-section for termination information.
1
VT
4 10 6, 9 5 8, 7
EQ VCC VCCO GND, Exposed pad Q0, /Q0
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SY56016R
Absolute Maximum Ratings(1)
Supply Voltage (VCC) ................................. -0.5V to +3.0V Supply Voltage (VCCO) ............................... -0.5V to +3.0V VCC - VCCO ........................................................... <1.8V VCCO - VCC ........................................................... <0.5V Input Voltage (VIN) ......................................... -0.5V to VCC CML Output Voltage (VOUT)................. 0.6V to VCCO+0.5V Current (VT) Source or sink current on VT pin .................. 100mA Input Current Source or sink current on (IN, /IN) .................. 50mA Maximum operating Junction Temperature.............125C Lead Temperature (soldering, 20sec.) ....................260C Storage Temperature (Ts) ........................... -65C to +150C
Operating Ratings(2)
Supply Voltage (VCC) .................................. 2.375V to 2.625V (VCCO) .................................... 1.14V to 2.625V Ambient Temperature (TA) ............................-40C to +85C (3) Package Thermal Resistance (R) MLF Still-air (qJA) ....................................................... 93C/W Junction-to-board (yJB)..................................... 56C/W
DC Electrical Characteristics(4)
TA = -40C to +85C, unless otherwise stated
Symbol VCC Parameter Power Supply Voltage Range Condition VCC VCCO VCCO VCCO ICC ICCO RIN RDIFF_IN VIH VIL VIN VDIFF_IN VT_IN
Notes: 1. Exceeding the absolute maximum rating may damage the device. 2. The device is not guaranteed to function outside its operating rating. 3. Package thermal resistance assumes exposed pad is soldered (or equivalent) to the device's most negative potential on the PCB. yJB and qJA values are determined for a 4-layer board in still-air number, unless otherwise stated. 4. The circuit is designed to meet the DC specifications shown in the above table after thermal equilibrium has been established. 5. 1.7V represents the VCC (min) value and 0.475V represents the maximum swing on a CML output. The difference between 1.7V and 0.475V is the VIL (min) needed for normal operation.
Min 2.375 1.14 1.7 2.375
Typ 2.5 1.2 1.8 2.5 30 16
Max 2.625 1.26 1.9 2.625 42 21 55 110 VCC VIH-0.2 1.0 2.0 1.28
Units V V V V mA mA V V V V V
Power Supply Current Power Supply Current Input Resistance (IN-to-VT, /IN-to-VT) Differential Input Resistance (IN-to-/IN) Input HIGH Voltage (IN, /IN) Input LOW Voltage (IN, /IN)
(5)
Max. VCC No Load. VCCO >1.7V 45 90 1.42 1.22V = 1.7V-0.475V See Figure 3a, applied to input of transmission line. See Figure 3b, applied to input of transmission line. 1.22 0.2 0.4
50 100
Input Voltage Swing (IN, /IN) Differential Input Voltage Swing (|IN - /IN|) Voltage from Input to VT
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SY56016R
CML Outputs DC Electrical Characteristics(6)
VCCO = 1.14V to 1.26V RL = 50 to VCCO, VCCO = 1.7V to 1.9V, 2.375V to 2.625V, RL = 50 to VCCO or 100 across the outputs, VCC = 2.375V to 2.625V. TA = -40C to +85C, unless otherwise stated.
Symbol VOH VOUT VDIFF_OUT ROUT Parameter Output HIGH Voltage Output Voltage Swing Differential Output Voltage Swing Output Source Impedance Condition RL = 50 to VCCO See Figure 3a See Figure 3b Min VCCO -0.020 300 600 45 Typ VCCO -0.010 390 780 50 Max VCCO 475 950 55 Units V mV mV
Three Level EQ Input DC Electrical Characteristics(6)
VCC = 2.375V to 2.625V. TA = -40C to +85C, unless otherwise stated.
Symbol VIH VIL IIH IIL
Notes: 6. The circuit is designed to meet the DC specifications shown in the above table after thermal equilibrium has been established.
Parameter Input HIGH Voltage Input LOW Voltage Input HIGH Current Input LOW Current
Condition
Min VCC-0.3 0
Typ
Max VCC VEE+ 0.3 400
Units V V A A
VIH = VCC VIL = GND -480
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SY56016R
AC Electrical Characteristics
VCCO = 1.14V to 1.26V RL = 50 to VCCO, VCCO = 1.7V to 1.9V, 2.375V to 2.625V, RL = 50 to VCCO or 100 across the outputs, VCC = 2.375V to 2.625V. TA = -40C to +85C, unless otherwise stated.
Symbol fMAX tPD tSKEW tJITTER tr, tf
Notes: 7. 8. 9. Propagation delay is measured with no attenuating transmission line connected to the input. Part-to-part skew is defined for two parts with identical power supply voltages at the same temperature and input transition. Random jitter is measured with a K28.7 pattern, measured at fMAX.
Parameter Maximum Frequency Propagation Delay Part-to-Part Skew Data Random Jitter Output Rise/Fall Times (20% to 80%) IN-to-Q
Condition NRZ Data VOUT > 200mV Note 7, Figure 1 Note 8 Note 9 At full output swing. Clock
Min 6.4 5.0 100
Typ
Max
Units Gbps GHz
150
250 100 1
ps ps psRMS ps
20
50
80
Timing Diagram
Figure 1. Propagation Delay
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SY56016R
Typical Characteristics
VCC = 2.5V, VCCO = 1.2V, GND = 0V, VIN = 400mV, RL = 50 to 1.2V, Data Pattern: 2 -1, TA = 25C, unless otherwise stated.
23
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SY56016R
Input and Output Stage
Figure 2a. Simplified Differential Input Buffer
Figure 2b. Simplified CML Output Buffer
Single-Ended and Differential Swings
Figure 3a. Single-Ended Swing
Figure 3b. Differential Swing
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SY56016R
Interface Applications
For Input Interface Applications see Figures 4a through 4e. For CML Output Termination, see Figures 5a through 5d. CML Output Termination with 1.2V VCCO For VCCO of 1.2V, Figure 5a, terminate the output with 50-to-1.2V, DC coupled, not 100 differentially across the outputs. If AC-coupling is used, Figure 5d, terminate into 50to-1.2V before the coupling capacitor and then connect to a high value resistor to a reference voltage. Do not AC couple with internally terminated receiver. For example, 50 ANY-IN input. AC-coupling will offset the output voltage by 200mV and this offset voltage will be too low for proper driver operation. Any unused output pair needs to be terminated when VCCO is 1.2V, do not leave floating. CML Output Termination with 1.8V/2.5V VCCO For VCCO of 1.8V or 2.5V, Figures 5a and 5b, terminate with either 50-to-VCCO or 100 differentially across the outputs. AC- or DC-coupling is fine. See Figure 5c for AC-coupling. Input AC-Coupling The SY56016R input can accept AC-coupling from any driver with voltage swing between 0.2V to 1.0V (See DC Electrical Characteristics for more details). Bypass VT with a 0.1F low ESR capacitor to VCC, as shown in Figures 4c and 4d. VT has an internal high impedance resistor divider as shown in Figure 2a, to provide a bias voltage for AC-coupling. Input Termination From 1.8V CML driver: Terminate with VT tied to 1.8V. Do not terminate 100 differentially. From 2.5V CML driver: Terminate with either VT tied to 2.5V or 100 differentially. The input cannot be DC-coupled from a 1.2V CML driver.
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SY56016R
Input Interface Applications
Figure 4a. CML Interface 100 Differential (DC-Coupled, 2.5V)
Option: May connect VT to VCC
Figure 4b. CML Interface 50 to VCC (DC-Coupled, 1.8V, 2.5V)
Figure 4c. CML Interface (AC-Coupled)
Figure 4d. LVPECL Interface (AC-Coupled)
Figure 4e. LVDS Interface (AC-Coupled)
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SY56016R
CML Output Termination
Figure 5a. 1.2V 1.8V or 2.5V CML DC-Coupled Termination
Figure 5b. 1.8V or 2.5V CML DC-Coupled Termination
Figure 5c. CML AC-Coupled Termination (VCCO 1.8V or 2.5V only)
Figure 5d. CML AC-Coupled Termination VCCO 1.2V Only
Related Product and Support Documents
Part Number HBW Solutions Function New Products and Termination Application Notes Datasheet Link http://www.micrel.com/page.do?page=/productinfo/as/HBWsolutions.shtml
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SY56016R
Package Information
10-Pin MicroLeadFrame (MLF-10)
(R)
MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA
TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http://www.micrel.com
The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer. Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A 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 indemnify Micrel for any damages resulting from such use or sale. (c) 2008 Micrel, Incorporated.
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