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214:
Recently, CML has been used in ultra-low power applications. Studies show that while the leakage current in conventional static CMOS circuits is becoming a major challenge in lowering the energy dissipation, good control of CML current consumption makes them a very good candidate for extremely low
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circuits, as well as the very fast current switching taking place at the input differential pair transistors. One of the primary requirements of a current-mode logic circuit is that the current bias transistor must remain in the saturation region to maintain a constant current.
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57:
is steered between two alternate paths depending on whether a logic zero or logic one is being represented. Typically, the generator is connected to the two sources of a pair of differential
296:
Tajalli, Armin; Vittoz, Eric; Brauer, Elizabeth J.; Leblebici, Yusuf. "Ultra low power subthreshold MOS current mode logic circuits using a novel load device concept".
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power use. Called subthreshold CML or subthreshold source coupled logic (STSCL), the current consumption of each gate can be reduced down to a few tens of picoamps.
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of ECL has a low resistance of around 5 Ω whereas CML connects to the drains of the driving transistors, that have a high impedance, and so the
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on both differential lines. CML is frequently used in interfaces to fiber optic components. The principle difference between CML and
582:
552:
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System
Interface Level 5 (SxI-5): Common Electrical Characteristics for 2.488 – 3.125 Gbit/s Parallel Interfaces.
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The fast operation of CML circuits is mainly due to their lower output voltage swing compared to the static
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69:(ECL) operates similarly, with the output being taken from the collectors of the BJT transistors.
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50:
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TFI-5: TDM Fabric to Framer
Interface Implementation Agreement. OIF, September 16, 2003
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54:
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In addition, CML has been widely used in high-speed integrated systems, such as for
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CML signals have also been found useful for connections between modules. CML is the
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43:
35:
79:-level interconnect, it is intended to transmit data at speeds between 312.5
418:
For more details on design automation and low power design of CML circuits, see:
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344:. Analog Circuits And Signal Processing (ACSP) (1 ed.). Cham, Switzerland:
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Extreme low-power mixed signal IC design: subthreshold source-coupled circuits
233:, a differential signaling standard for high speed inter-module communications
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227:(LVDS) A differential standard used primarily for signals between modules.
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106:
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http://www.ee.iitm.ac.in/~nagendra/videolectures/doku.php?id=ee685:start
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network (typically 50 Ω resistive) is the effective output impedance.
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Reynders, Nele; Dehaene, Wim (2015). Written at
Heverlee, Belgium.
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The transmission is point-to-point, unidirectional, and is usually
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Ultra-Low-Voltage Design of Energy-Efficient
Digital Circuits
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JESD204B - a JEDEC Standard for serial data interfacing
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Interfacing between LVPECL, VML, cml and LVDS Levels,
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Tajalli, Armin; Leblebici, Yusuf (27 September 2010).
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598:
528:
481:
403:
https://pdfserv.maximintegrated.com/en/an/AN291.pdf
265:"Understanding DVI-D, HDMI And DisplayPort Signals"
61:, with the two paths being their two drains. The
346:Springer International Publishing AG Switzerland
414:http://focus.ti.com/lit/an/slla120/slla120.pdf
459:
8:
401:Introduction to LVDS, PECL, and CML, Maxim,
34:), is a digital design style used both for
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452:
444:
589:Current mode logic / Source-coupled logic
231:Positive-referenced emitter-coupled logic
140:this drive impedance close to the driven
243:
250:Serial Interface for Data Converters,
167:video links, the interfaces between a
83:and 3.125 Gbit/s across standard
148:greatly reduces undesirable ringing.
7:
49:The basic principle of CML is that
225:Low-voltage differential signaling
14:
16:Differential digital logic family
553:Direct-coupled transistor logic
1:
254:standard JESD204, April 2006
120:as a link technology is the
42:-level digital signaling of
583:Transistor–transistor logic
102:at the destination with 50
658:
571:Integrated injection logic
438:JESD204B Overview (slides)
55:constant current generator
577:Resistor–transistor logic
565:Gunning transceiver logic
501:Depletion-load NMOS logic
354:10.1007/978-3-319-16136-5
124:of the driver stage: the
146:characteristic impedance
541:Diode–transistor logic
187:frequency synthesizers
95:
94:CML termination scheme
85:printed circuit boards
559:Emitter-coupled logic
513:Pass transistor logic
93:
67:emitter-coupled logic
28:source-coupled logic
440:- Texas Instruments
529:Other technologies
420:http://lsm.epfl.ch
277:on 2 November 2013
169:display controller
96:
20:Current mode logic
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507:Complementary MOS
363:978-3-319-16135-8
326:978-1-4419-6477-9
191:telecommunication
142:transmission line
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621:Four-phase logic
503:(including HMOS)
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434:- Analog Devices
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270:. Archived from
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126:emitter follower
122:output impedance
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210:Ultra low power
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642:Logic families
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547:Open collector
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483:MOS technology
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475:Logic families
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426:External links
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153:physical layer
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616:Domino logic
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519:Bipolar–CMOS
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319:, New York.
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306:
298:Esscirc 2007
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279:. Retrieved
272:the original
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213:
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183:transceivers
177:
165:FPD-Link III
150:
134:pull up/down
97:
74:differential
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48:
44:digital data
31:
27:
23:
19:
18:
536:Diode logic
180:serial data
65:equivalent
36:logic gates
496:NMOS logic
491:PMOS logic
380:2015935431
281:30 October
238:References
100:terminated
591:(CML/SCL)
372:1872-082X
197:Operation
193:systems.
130:impedance
107:resistors
636:Category
521:(BiCMOS)
317:Springer
219:See also
155:used in
138:Matching
38:and for
611:Dynamic
173:monitor
132:of the
63:bipolar
53:from a
51:current
606:Static
555:(DCTL)
509:(CMOS)
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370:
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171:and a
81:Mbit/s
26:), or
599:Types
585:(TTL)
579:(RTL)
567:(GTL)
561:(ECL)
543:(DTL)
515:(PTL)
275:(PDF)
268:(PDF)
252:JEDEC
72:As a
40:board
573:(IL)
549:(OC)
376:LCCN
368:ISSN
358:ISBN
321:ISBN
283:2013
203:CMOS
185:and
163:and
161:HDMI
59:FETs
393:OIF
350:doi
189:in
157:DVI
144:'s
118:ECL
109:to
77:PCB
32:SCL
24:CML
638::
374:.
366:.
356:.
348:.
315:.
175:.
159:,
113:cc
87:.
46:.
467:e
460:t
453:v
382:.
352::
329:.
300:.
285:.
111:V
104:Ω
30:(
22:(
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