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pecl to lvpecl clock differential driver
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The MAX9320B low-skew, 1-to-2 differential driver is designed for clock and data distribution. The input is reproduced at two differential outputs. The differential input can be adapted to accept single-ended inputs by applying an external reference v. This application report introduces the various interface standards used today in modern telecom and datacom systems and describes the methods used to interface between similar and different I/O structures used on Texas Instruments serial gigabit solutions products. The main logic levels discussed in this application. converting mixed 3.3 and 2.5V LVPECL with IDT PClk and Clk receivers, proper utilization of clock receivers with internal terminations, LVPECL to LVDS conversion, attenuator design, and selection of bias and coupling capacitors for AC terminations. The LVPECL Driver. The LVPECL driver is typically. The MC100LVEP14 is a low skew 1−to−5 differential driver, designed with clock distribution in mind, accepting two clock sources into an input multiplexer. The ECL/PECL input signals can be either differential or single−ended (if the VBB output is used). HSTL inputs can be used when the LVEP14 is operating under PECL. The NB6L16 is a high precision, low power ECL differential clock or data receiver/driver/translator buffer. The device is functionally equivalent to the EL16, EP16, LVEL16 and NBSG16 devices. With output transition times of 70 ps, it is ideally suited for high frequency, low power systems. The device is targeted for Backplane. for SiTime differential oscillator families SiT9120/1/2 and differential voltage controlled oscillator. (VCXO) families SiT3821/2 having either LVPECL or LVDS output drivers. Interfaces for driving. CML or HCSL clock inputs using SiT9120/1/2 or SiT3821/2 oscillators with LVPECL output are also discussed in sections 4 and 5. VCCO = VCC; Unlike LVCMOS, VCCO cannot be less than VCC to accommodate clock receivers. 3. using different supply voltages. As an example, VCC = 3.3V and VCCO = 2.5V will cause the output transistors to saturate, drastically reducing switching time. Differential-output LVPECL drivers are capable. terminated the same as the used line to maintain balanced loads on the differential driver outputs. The wide VIHCMR specification allows both pair of CLOCK inputs to accept LVDS levels. The NB100LVEP224, as with most other ECL devices, can be operated from a positive VCC supply in LVPECL mode. This allows. ANTC206. Differential Clock Translation. Introduction. Considering that each available clock logic type (LVPECL, HCSL, CML, and LVDS) operates with a different common-mode voltage and swing level than the next (see Table 1), it is necessary to design clock logic translation between the driver side and. This application note provides termination recommendations for connecting input and output clock signals to the. Si533x and Si5356/55... following signal types: CMOS/LVTTL, SSTL, HSTL, LVPECL, LVDS, and HCSL. The Si5338 also supports a CML output driver. 3.1. CMOS/LVTTL Outputs. The CMOS output driver has. CMOS, HCMOS, LVCMOS, Sinewave, Clipped Sinewave, TTL, PECL, LVPECL, LVDS, CML…Oscillators and frequency control devices come with a range of different output buffer types and each type has its own advantages and disadvantages. The aim of this application note is to provide some background on each type. MC100EP221. LOW–VOLTAGE. 1:20 DIFFERENTIAL. ECL/PECL CLOCK DRIVER. TB SUFFIX. 52–LEAD LQFP PACKAGE. EXPOSED PAD. CASE 1336. F re e. ECL/LVPECL or HSTL. Alternative differential reference clock signal input. CLK_SEL. Input. LVPECL. Output frequency divider select. Q[0-19], Q[0-19]. Output. General Description. The MAX9320B low-skew, 1-to-2 differential driver is designed for clock and data distribution. The input is reproduced at two differential outputs. The differential input can be adapted to accept single-ended inputs by applying an external reference voltage. The MAX9320B features ultra-low propagation. The MC100LVEP111 is a low skew 1-to-10 differential driver, designed with clock distribution in mind, accepting two clock sources into an input multiplexer. The PECL input signals can be either differential or single-ended (if the VBB output is used). HSTL inputs can be used when the LVEP111 is operating under PECL. The MC100LVEP14 is a low skew 1-to-5 differential driver, designed with clock distribution in mind, accepting two clock sources into an input multiplexer.. CLK_SEL*. LVECL/LVPECL. ECL/PECL Active Clock. Select Input. EN*. LVECL/LVPECL. ECL Sync Enable. VBB. LVECL/LVPECL. Reference Voltage Output. VCC. PECL and LVPECL. jitter PECL outputs are frequently used in high-speed clock distribution circuits. This is because PECL provides high noise immunity, the ability to drive high data rates over long line lengths, and good jitter performance due to the large voltage swings. However, PECL requires high. The ICS853001 is a 1:1 Differential LVPECL- to-LVPECL Buffer and a member of the. HiPerClockS™ family of High Performance. Clock Solutions from ICS. The ICS853001 may be used to regenerate LVPECL clocks which may have been attenuated, across a long trace, or may also be used as a differential-to-LVPECL. Q4: What are the Logic Levels for ECL, LVECL, PECL and LVPECL Circuits? Q5: What does a typical ECL input circuit look like? Q6: What does a typical ECL output circuit look like? Q7: How do I drive ECL Inputs connected to 50 Ω/VTT Terminations? Q8: How do I drive a floating Differential ECL Input? Q9: Why do ECL. Differential 3.3V LVPECL is commonly used for the transmission of high-speed, low-jitter clocks and high bit-rate. The driver and receiver used in the simulation were Virtex-II Pro FPGA 2.5V LVPECL, and the receiver voltages were probed at the die pads (see Figure 2 for simulation results). Application. 1:5 dual differential LVDS Clock Driver/Receiver. (MC100EP210S). Figure 1. Comparison of Output Voltage Levels. Standards (Figure not to Scale). PECL. 3.3 V LVPECL. NECL/LVNECL. LVDS. 2.5 V LVPECL. 3.3 V LVTTL/LVCMOS. SIGNAL VOLT. AGE. LVDS require a 100 Ω load resistor between the differential outputs. tor offers wide range of LVDS drivers, receivers and clock distri- bution buffers. This application note discusses the interface between LVDS and. PECL, LVPECL, CML, RS-422 and single ended devices using resistor network. Since the structure of drivers and receivers are different between manufacturers. DC-Coupling Between Differential LVPECL, LVDS, HSTL, and CM. Kal Mustafa / Chris Sterzik. High Performance Analog. ABSTRACT. This report describes various methods of interfacing different logic levels. The focus is dc- coupling between the following differential signaling: LVPECL (low-voltage positive- referenced. Low-Voltage 1:10 Differential. LVECL/LVPECL/LVEPECL/HSTL. Clock Driver. The MC100LVEP111 is a low skew 1–to–10 differential driver, designed with clock distribution in mind, accepting two clock sources into an input multiplexer. The LVECL/LVPECL input signals can be either differential or single–ended (if the VBB. This document will cover the I/O families based on PECL. (LVPECL), LVDS, HSTL and LVTTL uses. There are dozens of other level classes and even sub classes in these. Areas of discussion include the PECL output and input translations and the HSTL input translations to and from these logic levels. In electronics, emitter-coupled logic (ECL) is a high-speed integrated circuit bipolar transistor logic family. ECL uses an overdriven BJT differential amplifier with single-ended input and limited emitter current to avoid the saturated (fully on) region of operation and its slow turn-off behavior. As the current is steered between. Distributes One Differential Clock Input Pair. The CDCLVP110 clock driver distributes one. LVPECL/HSTL to 10 Differential LVPECL differential clock pair of either LVPECL or HSTL. Clock Outputs. (selectable) input, (CLK0, CLK1) to ten pairs of differential LVPECL clock (Q0, Q9) outputs with. •. Fully Compatible With. Two such clock-distribution devices are the ADCLK9542 clock fanout buffer and the ADCLK9143 ultrafast clock buffer. The ADCLK954 comprises 12 output drivers that can drive 800-mV full-swing ECL (emitter-coupled logic) or LVPECL (low-voltage positive ECL) signals into 50-Ω loads for a total differential output swing of. AN-5029 Inte rfacing Betw e e n PECL and L. V. DS D iffere n tial T echnologies. AN-5029. Interfacing Between. PECL and LVDS Differential Technologies. Introduction.. To explore this approach we will use an LVPECL driver interfacing to a. LVPECL to LVDS Interface Using a Thevenin Equivalent Termination Scheme. 1:5 dual differential LVDS Clock Driver/Receiver. (MC100EP210S). Figure 1. Comparison of Output Voltage Levels. Standards (Figure not to Scale). PECL. 3.3 V LVPECL. NECL/LVNECL. LVDS. 2.5 V LVPECL. 3.3 V LVTTL/LVCMOS. SIGNAL VOLT. AGE. LVDS require a 100 Ω load resistor between the differential outputs. TTL/CMOS to differential LVDS, HSTL, or CML and translate it to LVPECL. Translation is guaranteed for speeds up to. 2.5Gbps (2.5GHz toggle frequency)... VCC(DRIVER). 102Ω. 1%. SY89327L. Figure 5. CML-DC Coupled. IN. /IN. SY89327L. 2.5V. LVTTL. 2.5kΩ. 1%. 2.3V to 2.7V. VCC. Figure 6. 2.5V "TTL". PECL. IN. /IN. n Low Phase Noise Buffer/Driver n Optimized Conversion of Sine Wave Signals to. Logic Levels n Three Logic Output Types Available n LVPECL n LVDS. GND. OUT2. OUT1. FILTA. FILTB. 10nF. 50Ω. 100MHz. +7dBm. SINE WAVE. 10nF. IN–. IN+. OCXO. 3.3V. TO PLL CHIPS. OR SYSTEM. SAMPLING CLOCKS. 0.1µF. The common-mode output of an LVPECL driver is approximately 2 V, while the differential output voltage would be approximately 600 to 800 mV.. The absolute voltage levels at the input pins to the SN65LVDS101 must be less than or equal to 4 V. With a 5-V PECL signal, the non-inverting output will generally be just. 12730 Commonwealth Drive • Fort Myers, Florida 33913. Phone: 239-561-3311 • 800-237-3061. Fax: 239-561-1025 • www.crystek.com. CRYSTEK. CORPORATION. 9×14 mm SMD, 3.3V, LVPECL. CCPD-940 Model. Differential LVPECL. Clock Oscillator. Rev: M. Date: 21-Sep-. #1 Crystek 9×14 SMD PECL. #2 Model 940. The CML differential receivers and drivers incorporate various programmable features and interfaces to other CML and non-CML.... Reference Clock Buffer with External AC Coupling – LVPECL Clock Driver. Figure 16. Single-Ended PECL Driving CML Reference Clock Buffer (AC, Receiver End Termination). LVPECL. +. ECL/PECL. 2 GHz. 400 ps. 3.3V. Micrel. SY898830. Clock Driver. PECL/LVPECL. ECL/HSTL. PECL. 2.5 GHz. 450 ps. 3.3V. On Semiconductor. MC10EP08. XOR Gate. ECL. ECL. 3 GHz. 250 ps. 3.3V. Micrel. SY10EP08. XOR Gate. ECL. ECL. 3 GHz. 200 ps. 3.3V. On Semiconductor. MC10LVEP16. Differential Driver. ECL. The PCK953 has a differential LVPECL reference input, along with an external feedback input. These features make the. 9 mA quiescent current typical. □ 60 ps static phase offset typical. PCK953. 20 MHz to 125 MHz PECL input, 9 CMOS output, 3.3 V PLL clock driver. Rev. 05 — 9 October 2008. Product data sheet. PECL are differential logic outputs commonly used in high-speed clock distribution circuits. PECL requires a +5 V supply . • Low Voltage PECL (LVPECL) denotes PECL circuits designed for use with 3.3V or. Capable of driving long transmission lines. • Drawbacks: – Larger power consumption due to differential output. Compatibility. Output. Compatibility. Max. Frequency. Propagation. Delay. On Semi- conductor. MC100LVEP14. Clock Driver. ECL/PECL/HSTL. ECL/PECL. 2 GHz. 400 ps. Micrel. SY898830. Clock Driver. PECL/LVPECL/E. CL/HSTL. PECL. 2.5 GHz. 450 ps. On Semi- conductor. MC10LVEP16. Differential. Driver. ECL. ECL. High Speed Current Steering Logic (HCSL) outputs are found in PCI express applications and Intel chipsets. HCSL is a newer differential output standard, similar to LVPECL, with a 15mA current source being derived from an open emitter or source. Being un-terminated drains, they require external 50 ohm resistors to. The SY55857L is a fully differential, high-speed dual translator optimized to accept any logic standard from single-ended TTL/CMOS to differential LVDS, HSTL, or. CML and translate it to LVPECL. Translation is guaranteed for speeds up to 2.5Gbps (2.5GHz toggle frequency). The SY55857L does not internally terminate. Differential PECL/LVPECL compatible outputs. Differential latch control. Hand-held test instruments. Zero-crossing detectors. Line receivers and signal restoration. Clock drivers. FUNCTIONAL BLOCK DIAGRAM. 04722-001. NONINVERTING. ADCMP552. A differential input stage permits consistent propagation delay. “Pad Placement and DC Guidelines" on page 6–23. □. “Clock Pins Functionality" on page 6–23. □. “High-Speed I/O Interface" on page 6–24. □. “High-Speed I/O Standards Support" on page 6–28. □. “True Differential Output Buffer Feature" on page 6–35. □. “High-Speed I/O Timing" on page 6–36. □. MC100LVE111. 3.3V ECL 1:9 Differential. Clock Driver. The MC100LVE111 is a low skew 1−to−9 differential driver, designed with clock distribution in mind.. differential input is connected to VBB as a switching reference voltage. VBB may also rebias.. LVPECL DC CHARACTERISTICS VCC = 3.3 V; VEE = 0 V (Note 2). The XR81112 is a clock synthesizer with Integer/fractional divider, LVCMOS/. LVDS/LVPECL driver, 3.3V/2.5V supply, taking a Xtal input and providing one of four. 3.3. 3.465. V. IEE. Power Supply Current. PECL. LVDS. CMOS. Includes output loading. Measured at 1500MHz. Measured at 1500MHz. Measured at 200MHz. Introduction. Emitter-Coupled Logic (ECL) ICs are ideal for operating in the gigahertz range due to their picosecond propagation delays. Additionally, thanks to their use of differential inputs, they are able to drive long transmission lines in relatively noisy environments while maintaining signal integrity. While this potential divider does place the signal in the middle of its voltage range, it may be worth checking whether the FPGA clock input is OK with this large. It's important to have them in the order of PECL driver, series resistors, 100ohm balanced interconnect tracks, LVDS receiver with termination. clock generation and distribution for robust high-speed data transmission. The device features subpicosecond jitter generation, excellent power-supply noise rejection, and pin-programmable LVDS/LVPECL output interfaces. The MAX3637 provides nine differential outputs and one LVCMOS output, divided into three banks. 1:5 dual differential LVDS Clock Driver/Receiver. (MC100EP210S). Figure 1. Comparison of Output Voltage Levels. Standards (Figure not to Scale). PECL. 3.3 V LVPECL. NECL. LVDS. 2.5 V LVPECL. 3.3 V LVTTL/LVCMOS. VOLT. AGE. LVDS require a 100 Ω load resistor between the differential outputs to generate the. clock source to drive multiple devices has become more difficult as the speed and performance of application specific.. Clock Termination Techniques and Layout Considerations. LVPECL and LVDS. CTS LVPECL and LVDS logic output designs provide many advantages over HCMOS logic technology. LVPECL and. The MC100EPT23 is a dual differential LVPECL to LVTTL translator. Because LVPECL (Positive ECL) levels are used, only +3.3 V and ground are required. The small outline 8-lead package and the dual gate design of the EPT23 makes it ideal for applications which require the translation of a clock and a data signal. with LVPECL or LVDS outputs. • LVDS, PECL clock reference and drivers. • LVDS, PECL Signal Conversion. PACKAGE AVAILABILITY. • Available in Die. • SON8 (1.5mm x 1.0mm). • MSOP8 (0.118in x 0.118in). • Green/RoHS Compliant/Pb-Free. AZS10. Ultra-Low Phase Noise LVPECL,. LVDS Buffer & Translator. Non-PLL based clock buffers can make a big difference in two areas: One is in clock distribution networks; the other is in differential signaling lines. Accumulated jitter.. Some PECL and LVPECL implementations have totem-pole like output drivers, but these are not in the spirit of ECL, or took the pseudo to heart. The driver. This databook contains device specifications for Motorola's advanced ECL logic families, ECLinPS and... Triple PECL to LVPECL Translator. 9-Bit Buffer. E122. 1:2 Differential Fanout Buffer. EL/LVEL11]. 1:4 Clock Distribution Chip. EL15. 1:9 Differential Clock Driver. E/LVE111]. 1:9 Diff ECL/PECL RAMBus Clock Buffer. Differential-to-3.3V, 2.5V. LVPECL Fanout Buffer. 12. 0 - 1500. 1. CML, LVPECL, SSTL. 1. 2.5, 3.3. 50. 60. 8SLVP2106I. Dual 1:6, 3.3V, 2.5V LVPECL. Output Fanout Buffer. 12. 0 - 2000. 2. LVDS, LVPECL. 2. 2.5, 3.3. 26. 42. 8T33FS6222. Low Voltage, 1:15. Differential PECL Clock. Divider and Fanout Buffer. 15. 0 - 750. 2. The input signals can be applied in low voltage CMOS (LVCMOS) or low voltage PECL (LVPECL), depending on the desired bit rate and available format. The data is predistorted by the turn-on-delay-compensation (TODC) block prior to reaching the laser driver, denoted as the laser-driver stage (LDS). In this manner. powered down while the driver is powered, a serious problem can result. The base-collector junction of the receiver input transistor will be forward biased and can conduct enough current through the collector load resistor to damage the device. 3.2.3. LVPECL. One of the main uses for PECL devices is in clock distribution. Fanout Buffer. SY89873L. 8S89873. Divider. 2.5V/3.3V Any In-to-LVDS Clock Gen +. Fanout Buffer. SY89875U. ICS889875,. 8S89875. Divider. 2.5V/3.3V Any In-to-LVPECL Clock. Divider + Fanout Buffer. SY89874U. Similar to. NB6L239MN. ICS889874,. 8S89874. Divider. 2.5V/3.3V LVPECL Programmable Clock. LVPECL. – Differential: LVPECL, LVDS, CML, HSTL. • 325mV LVDS-compatible output swing. • Power supply: 2.5V +5%. • Industrial temperature range –40°C to +85°. PECL input mode. VBB1 can be used for AC-coupling of CLK1, see Figure 4d for details. Maximum sink/source current is ±1.5mA. Due to the limited drive. The Low Voltage Positive Emitter Coupled Logic (LVPECL) is an established high frequency differential signaling standard. It is an enhanced version of Positive Emitter Coupled Logic (PECL), a differential signaling systems that is usually used in high speed and clock distribution circuits. The ICS853S01I is.
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