CLC005AJE National Semiconductor, CLC005AJE Datasheet

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CLC005AJE

Manufacturer Part Number
CLC005AJE
Description
ITU-T G.703 Cable Driver with Adjustable Outputs
Manufacturer
National Semiconductor
Datasheet

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© 2000 National Semiconductor Corporation
CLC005
ITU-T G.703 Cable Driver with Adjustable Outputs
General Description
National’s Comlinear CLC005 is a monolithic, high-speed
cable driver designed for the ITU-T G.703 serial digital data
transmission standard. The CLC005 drives 75
sion lines (Belden 8281 or equivalent) at data rates from DC
to over 622 Mbps. Output signal waveforms produced by the
CLC005 comply with G.703 specifications. Controlled output
rise and fall times (650 ps typical) minimize transition-
induced jitter. The output voltage swing, typically 2.0V, set by
an accurate, low-drift internal bandgap reference, delivers a
1.0V swing to back-matched and terminated 75 cable. Out-
put swing is adjustable from 0.7 V
nal resistors.
The CLC005’s class AB output stage consumes less power
than other designs, 185 mW with both outputs terminated,
and requires no external bias resistors. The differential in-
puts accept a wide range of digital signals from 200 mV
G.703 levels within the specified common-mode limits. All
this make the CLC005 an excellent general purpose high
speed driver for digital applications.
The CLC005 is powered from a single +5V or −5.2V supply
and comes in an 8-pin SOIC package.
Typical Application
p-p
to 2.2 V
DS100144
p-p
using exter-
transmis-
p-p
to
Key Specifications
n 650 ps rise and fall times
n Data rates to 622 Mbps
n 200 mV differential input
n Low residual jitter (25 ps
Features
n No external pull-down resistors
n Adjustable output amplitude
n Differential input and output
n Low power dissipation
n Single +5V or −5.2V supply
Applications
n ITU-T G.703, Sonet/SDH, and ATM compatible driver
n Digital routers and distribution amplifiers
n Coaxial cable driver for digital transmission line
n Twisted pair driver
n Buffer applications
pp
)
DS100144-2
www.national.com
August 1998

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CLC005AJE Summary of contents

Page 1

... CLC005 an excellent general purpose high speed driver for digital applications. The CLC005 is powered from a single +5V or −5.2V supply and comes in an 8-pin SOIC package. Typical Application © 2000 National Semiconductor Corporation Key Specifications n 650 ps rise and fall times n Data rates to 622 Mbps transmis- ...

Page 2

... Typical Performance Characteristic Connection Diagram (8-Pin SOIC) www.national.com DS100144-1 DS100144-3 Order Number CLC005AJE See NS Package Number M08A 2 ...

Page 3

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage Output Current Maximum Junction Temperature Storage Temperature Range Lead Temperature (Soldering 10 seconds) ESD Rating (Human Body Model) Electrical Characteristics ...

Page 4

Operation INPUT INTERFACING The CLC005 has high impedance, emitter-follower buffered, differential inputs. Single-ended signals may also be input. Transmission lines supplying input signals must be properly terminated close to the CLC005. Either A.C. or D.C. coupling as in Figure 2 ...

Page 5

Operation (Continued) FIGURE 4. Single Ended 50 FIGURE 5. Differential 50 FIGURE 3. DC Coupled Input OUTPUT INTERFACING The CLC005’s class AB output stage, Figure 6 , requires no standing current in the output transistors and therefore re- quires no ...

Page 6

Operation (Continued) OUTPUT AMPLITUDE ADJUSTMENT The high and low output levels of the CLC005 are set by a circuit shown simplified in Figure 8 . Output high and low lev- els may be set independently with external resistor networks connected ...

Page 7

Operation (Continued) FIGURE 10. Resistance Pins Output Voltage FIGURE 11. Differential Input Increased Output FIGURE 9. Differential Input Reduced Output Reduced Output @ 150 Load 7 DS100144-12 DS100144-13 DS100144-14 www.national.com ...

Page 8

Operation (Continued) FIGURE 12. Resistance Pins Output Voltage @ Increased Output 150 OUTPUT RISE AND FALL TIMES Output load capacitance can significantly affect output rise and fall times. The effect of load capacitance, stray or other- ...

Page 9

... National Semi- conductor. To order this evaluation board, part number CLC730056, contact your local sales representative or the National Semiconductor Customer Response Center in your area. (This evaluation board is identical to that for the CLC007 for which some of the listed parts are not re- quired ...

Page 10

... SMD Tantalum Capacitor, Size 6032 BNC PC Amphenol #31-5329-52RFX BNC PC Amphenol #31-5329-72RFX 124 SMD Resistor, Size 1206 82.5 SMD Resistor, Size 1206 75 SMD Resistor, Size 1206 2.4 k SMD Resistor, Size 1206 3 k SMD Resistor, Size 1206 CLC005AJE Cable Driver Jumper 10 k Potentiometer, Bourns 3299 10 Qty ...

Page 11

PCB Layout Recommendations (Continued) DS100144-18 DS100144-20 11 DS100144-19 DS100144-21 www.national.com ...

Page 12

... National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications. inches (millimeters) unless otherwise noted Order Number CLC005AJE NS Package Number M08A 2 ...

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