CLC001
Serial Digital Cable Driver with Adjustable Outputs
General Description
The CLC001 is a monolithic, high-speed cable driver de-
signed for use in SMPTE 259M serial digital video and ITU-T
G.703 serial digital data transmission applications. The
CLC001 drives 75Ωtransmission lines (Belden 8281 or
equivalent) at data rates up to 622 Mbps. Controlled output
rise and fall times (400 ps typical) minimize transition-
induced jitter. The output voltage swing is adjustable from
800mV
p-p
to 1V
p-p
using an external resistor.
The CLC001’s output stage consumes less power than other
designs. The differential inputs accept LVDS signal levels,
LVPECL levels directly or PECL with attenuation networks.
All these make the CLC001 an excellent general purpose
high speed driver for high-speed, long distance data trans-
mission applications.
The CLC001 is powered from a single +3.3V supply and
comes in a small 8-pin SOIC package.
Key Specifications
n400 ps rise and fall times
nData rates to 622 Mbps
n100 mV differential input threshold
nLow residual jitter
Features
nAdjustable output amplitude
nDifferential input and output
nAccepts LVPECL or LVDS input swings
nLow power dissipation
nSingle +3.3V supply
Applications
nDigital routers and distribution amplifiers
nCoaxial cable driver for digital transmission lines
nTwisted pair driver
nSerial digital video interfaces for the commercial and
broadcast industry
nSMPTE, Sonet/SDH, and ATM compatible driver
nBuffer applications
Typical Application
Connection Diagram (8-Pin SOIC)
DS101329-1
DS101329-2
Order Number CLC001AJE
See NS Package Number M08A
PRELIMINARY
January 2001
CLC001 Serial Digital Cable Driver with Adjustable Outputs
© 2001 National Semiconductor Corporation DS101329 www.national.com
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage 4V
Output Current 20 mA
Maximum Junction Temperature +125˚C
Storage Temperature Range −65˚C to +150˚C
Lead Temperature
(Soldering 10 seconds) +300˚C
ESD Rating (HBM) 2 kV
Package Thermal Resistance
θ
JA
Surface Mount AJE 125˚C/W
θ
JC
Surface Mount AJE 105˚C/W
Reliability Information
Transistor count TBD
Recommended Operating
Conditions
Supply Voltage Range (V
DD
-V
SS
) +3.0V to +3.6V
Operating Free Air Temperature (T
A
) -40˚C to +85˚C
R
BB
Range (applied to V
BB
input)
(Note 6) 2kΩto 14.5kΩ
Electrical Characteristics
Over recommended operating supply and temperature ranges unless otherwise specified (Notes 2 and 3)
Symbol Parameter Conditions Min Typ Max Units
OUTPUT DC SPECIFICATIONS
V
SDO
Serial Driver Output Voltage
(single ended) R
L
=75Ω1%,
R
REF
= 1.91kΩ1% (for 800mV
p-p
),
Figure 1
720 800 880 mV
R
L
=75Ω1%,
R
REF
= 1.5kΩ1% (for 1V
p-p
),
Figure 1
900 1000 1100 mV
RECEIVER DC SPECIFICATIONS
V
TH
Differential Input High Threshold V
CM
= +0.05V or +1.2V or +3.25V, 0 +100 mV
V
TL
Differential Input Low Threshold V
DD
= 3.3V −100 0 mV
V
CMR
Common Mode Voltage Range V
ID
= 100mV, V
DD
= 3.3V 0.05 3.25 V
I
IN
Input Current V
IN
= 0V or +3.0V, V
DD
= 3.6V or 0V ±1±10 µA
I
INB
Input Current Balance V
IN
= 0V or +3.0V, V
DD
= 3.6V or 0V,
(Note 8) TBD µA
SUPPLY CURRENT
I
DD
Total Dynamic Power Supply Current
(includes load current) R
L
=75Ω,
R
REF
= 1.91kΩ1%
(V
SDO
= 0.8V
p-p
@270Mbps)
TBD 100 mA
R
L
=75Ω,
R
REF
= 1.5kΩ1%
(V
SDO
= 1.0V
p-p
@622Mbps)
TBD 100 mA
MISCELLANEOUS PARAMETERS
L
GEN
Output Inductance (Note 4) TBD nH
R
GEN
Output Resistance (Note 4) 25 kΩ
CLC001
www.national.com 2
AC Electrical Characteristics
Over recommended operating supply and temperature ranges unless otherwise specified (Note 3)
Symbol Parameter Conditions Min Typ Max Units
t
r
,t
f
Rise time, Fall time 20%–80%, (Notes 4, 5) 400 800 ps
t
os
Output overshoot (Note 4) 5 %
t
jit
Output jitter (Note 4) (Note 7) 25 ps
t
pd
Propagation delay TBD ps
Note 1: “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. They are not meant to imply that the devices
should be operated at these limits. The table of “Electrical Characteristics” specifies conditions of device operation.
Note 2: Current flow into device pins is defined as positive. Current flow out of device pins is defined as negative. All voltages are stated referenced to VSS =0V.
Note 3: Typical values are at 25C and 3.3V.
Note 4: Spec is guaranteed by design.
Note 5: RL=75Ω, AC Coupled at 270 Mbps, RREF = 1.91kΩ1% (for 800mVp-p±10%).
Note 6: The VBB output is intended as a bias supply pin for the inputs of this device only. It is not designed as a power supply output and should not be used to
power other devices.
Note 7: RL=75Ω, AC Coupled at 622 Mbps, RREF = 1.5kΩ1% (for 1Vp-p±10%).
Note 8: Input Current Balance (IINB) is the difference between the Input Current (IIN)onV
IN+ and VIN− for the same bias condition.
Test Loads
DS101329-4
FIGURE 1. Test Loads
CLC001
www.national.com3
Test Loads (Continued)
Pin Descriptions
Pin # Name Description
1V
BB
Optional, bias voltage (may be used to bias inputs) - see device operation
section for details. If unused leave as no connect (NC).
2V
IN+
Positive input pin
3V
IN-
Negative input pin
4R
REF
Output driver level control, Connect a resistor to ground to set output voltage
swing.
5V
SS
Negative power supply
6 SDO Serial data true output
7 SDO Serial data complement output
8V
DD
Positive power supply
DS101329-3
FIGURE 2. Test Circuit
CLC001
www.national.com 4
Device Operation
INPUT INTERFACING
Numerous input configurations exist for applying PECL,
LVPECL, and LVDS signals to the input of the CLC001. In
addition, inputs may be single-ended or differential, AC or
DC coupled. The V
BB
pin may be used to provide a bias
voltage to the inputs when needed. Leave this pin as a no
connect if unused. Note that DC coupled inputs such as
direct LVDS and LVPECL connections are self-biasing and
do not require use of the V
BB
pin. Some common input
configurations are shown in the following figures:
DS101329-5
FIGURE 3. Single Ended 75ΩCoaxial Cable, AC-coupled
DS101329-6
FIGURE 4. Twisted Pair Cable, DC-coupled
CLC001
www.national.com5
Device Operation (Continued)
DS101329-7
FIGURE 5. Twisted Pair Cable, AC-coupled
DS101329-8
FIGURE 6. PECL, DC-coupled
DS101329-9
FIGURE 7. LVDS, DC-coupled
CLC001
www.national.com 6
Device Operation (Continued)
OUTPUT INTERFACING
The serial data outputs provide low-skew complimentary or
differential signals. Output levels range from 800mV
p-p
to
1V
p-p
±10% into 75ΩAC-coupled, back-matched loads. Out-
put level is controlled by the value of R
REF
connected to
pin 4.
PCB Layout Recommendations
Printed circuit board layout affects the performance of the
CLC001. The following guidelines will aid in achieving satis-
factory device performance.
•Use a ground plane or power/ground plane sandwich
design for optimum performance.
•Bypass device power with a 0.01 µF monolithic ceramic
capacitor in parallel with a 6.8 µF tantalum electrolytic
capacitor located no more than 0.1″(2.5 mm) from the
device power pins.
•Provide short, symmetrical ground return paths for:
— inputs,
— supply bypass capacitors and
— the output load.
•Provide short, grounded guard traces located
— under the centerline of the package,
— 0.1″(2.5 mm) from the package pins
— on both top and bottom of the board with connecting
vias.
CLC001
www.national.com7
Physical Dimensions inches (millimeters) unless otherwise noted
LIFE SUPPORT POLICY
NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL
COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or
systems which, (a) are intended for surgical implant
into the body, or (b) support or sustain life, and
whose failure to perform when properly used in
accordance with instructions for use provided in the
labeling, can be reasonably expected to result in a
significant injury to the user.
2. A critical component is any component of a life
support device or system whose failure to perform
can be reasonably expected to cause the failure of
the life support device or system, or to affect its
safety or effectiveness.
National Semiconductor
Corporation
Americas
Tel: 1-800-272-9959
Fax: 1-800-737-7018
Email: support@nsc.com
National Semiconductor
Europe Fax: +49 (0) 180-530 85 86
Email: europe.support@nsc.com
Deutsch Tel: +49 (0) 69 9508 6208
English Tel: +44 (0) 870 24 0 2171
Français Tel: +33 (0) 1 41 91 8790
National Semiconductor
Asia Pacific Customer
Response Group
Tel: 65-2544466
Fax: 65-2504466
Email: ap.support@nsc.com
National Semiconductor
Japan Ltd.
Tel: 81-3-5639-7560
Fax: 81-3-5639-7507
www.national.com
Order Number CLC001AJE
NS Package Number M08A
CLC001 Serial Digital Cable Driver with Adjustable Outputs
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.
National P/N CLC001 - Serial Digital Cable Driver with Adjustable Outputs [Preliminary]
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Products > Analog - Interface > Serial Digital Interface > CLC001
Generic P/N 001
General Description
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CLC001 Serial Digital Cable Driver with Adjustable Outputs
[Preliminary]
Contents
lGeneral Description
lFeatures
lKey Specification
lApplications
lDatasheet
lPackage Availability, Models,
Samples & Pricing
Parametric Table
Data Rate (Mbps) 622
Supply Voltage (Volt) 3.3
Supply Current (mA) 75
Output Swing (Volt) 1
Power Dissipation (Watt) .33
Jitter (ps) 50
Rise/Fall Times (ps) 400
The CLC001 is a monolithic, high-speed cable driver designed for use in
SMPTE 259M serial digital video and ITU-T G.703 serial digital data
transmission applications. The CLC001 drives 75[Ohm] transmission lines
(Belden 8281 or equivalent) at data rates up to 622 Mbps. Controlled
output rise and fall times (400 ps typical) minimize transition-induced
jitter. The output voltage swing is adjustable from 800mVp-p to 1Vp-p
using an external resistor.
The CLC001's output stage consumes less power than other designs. The
differential inputs accept LVDS signal levels, LVPECL levels directly or
PECL with attenuation networks.
All these make the CLC001 an excellent general purpose high speed
driver for high-speed, long distance data transmission applications.
The CLC001 is powered from a single +3.3V supply and comes in a small
8-pin SOIC package.
National P/N CLC001 - Serial Digital Cable Driver with Adjustable Outputs [Preliminary]
Page 2 of 3
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Features
Key Specification
Applications
Datasheet
Please use Adobe Acrobat to view PDF file(s).
If you have trouble printing, see Printing Problems.
lAdjustable output amplitude
lDifferential input and output
lAccepts LVPECL or LVDS input swings
lLow power dissipation
lSingle +3.3V supply
l400 ps rise and fall times
lData rates to 622 Mbps
l100 mV differential input threshold
lLow residual jitter
lDigital routers and distribution amplifiers
lCoaxial cable driver for digital transmission lines
lTwisted pair driver
lSerial digital video interfaces for the commercial and broadcast
industry
lSMPTE, Sonet/SDH, and ATM compatible driver
lBuffer applications
Title Size
(in
Kbytes) Date View
Online Download Receive
via Email
CLC001 Serial Digital
Cable Driver with
Adjustable Outputs
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Jan-01 View
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National P/N CLC001 - Serial Digital Cable Driver with Adjustable Outputs [Preliminary]
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Package Availability, Models, Samples & Pricing
[Information as of 7-Mar-2001]
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Part
Number
Package Status Models Samples
&
Electronic
Orders
Budgetary
Pricing
Type #
pins SPICE IBIS Quantity
$US
each
CLC001AJE SOIC
NARROW 8Preliminary N/A N/A .
CLC001AJE-
TR13 SOIC
NARROW 8Preliminary N/A N/A .
CLC001MX SOIC
NARROW 8Preliminary N/A N/A .
CLC001M SOIC
NARROW 8Preliminary N/A N/A .1K+
$2.0000
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