NSC CLC016AJQ-TR13, CLC016AJQ, CLC016ACQ Datasheet

CLC016
Data Retiming PLL with Automatic Rate Selection

General Description

National’s Comlinear CLC016 is a low-cost, monolithic, data
retiming phase-locked loop (PLL) designed for high-speed
serial clock and data recovery. The CLC016 simplifies high­speed data recovery in multi-rate systems by incorporating
auto-rate select (ARS) circuitry on chip. This function allows
the user to configure the CLC016torecognize up to four dif­ferent data rates and automatically adjust to provide accu­rate, low-jitter clock and data recovery. A single resistor is
used to set each data rate anywhere between 40 Mbps and
400 Mbps. No potentiometers, crystals, or other external ICs
are required to set the rate.

The CLC016 has output jitter of only 130 ps

pp

at a 270 Mbps
data rate and 0.25%fractional loop bandwidth. Low phase
detector output offset and low VCO injection combine to en­sure that the CLC016 does not generate bit errors or large
phase transients in response to extreme fluctuations in data
transition density. The result is improved performance when
handling the pathological patterns inherent in the SMPTE
259M video industry standard.

The carrier detect and output mute functions may be used
together to automatically latch the outputs when no data is
present, preventing random transitions. The external loop fil­ter allows the user to tailor the loop response to the specific
application needs. The CLC016 will operate with either +5V
or −5.2V power supplies. The serial data inputs and outputs,
as well as the recovered clock outputs, allow single- or
differential-ECL interfacing. The logic control inputs are TTL­compatible.

Applications

n SMPTE 259M serial digital interfaces: NTSC/PAL, 4:2:2

component, 360 Mbps wide screen

n Serial digital video routing and distribution
n Clock and data recovery for high-speed data

transmission

n Re-synchronization of serial data for SONET/SDH, ATM,

CAD networks, medical and industrial imaging

Features

n Retimed data output
n Recovered clock output
n Auto and manual rate select modes
n Four user-configurable data rates
n No potentiometers required
n External loop bandwidth control
n Frequency detector for lock acquisition
n Carrier detect output
n Output MUTE function
n Single supply operation: +5V or −5.2V
n Low cost

Key Specifications

n Low jitter: 130 ps

pp

@

270 Mbps, 0.25%fractional loop

bandwidth (0.675 MHz)

n High data rates: 40 Mbps − 400 Mbps
n Low supply current: 100 mA, including output biasing
n Flexible fractional loop bandwidth: from 0.05%to 0.5

%

Order Number Temperature Package

CLC016ACQ 0˚C to +70˚C PLCC V28A
CLC016AJQ –40˚C to +85˚C PLCC V28A

TRI-STATE®is a registered trademark of National Semiconductor Corporation.

DS100087-1

July 1998

CLC016 Data Retiming PLL with Automatic Rate Selection

© 1998 National Semiconductor Corporation DS100087 www.national.com

Typical Application

Four-Rate Clock and Data Recovery with Automatic Rate Selection

DS100087-2

Pinout

DS100087-3

28-pin PLCC

www.national.com 2

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 (V

CC–VEE

) −0.3, +6.0V
Maximum Junction Temperature +150˚C
Storage Temperature Range −65˚C to +150˚C
Lead Temperature (Soldering 4 sec) +260˚C
ESD Rating (Note 12) 2kV
Package Thermal Resistance

θ

JA

28-Pin PLCC 85˚C/W

θ

JC

28-Pin PLCC 35˚C/W

Reliability Information

MTTF (based on limited life
test data) 2.6 x 10

7

hours

Recommended Operating
Conditions

Supply Voltage (VCC–VEE) 4.5V to 5.5V
Operating Temperature –40˚C to +85˚C
Jitter Transfer Function Fractional Loop

Bandwidth 0.05%to 0.5

%

SCO/SCO, SDO/SDO Minimum

Voltage (Note 13) VCC– 1.6V

Electrical Characteristics

(VCC= 0V, VEE= −5V, RBW= 500Ω;CZ= 0.1 µF; CP= 82 pF; Rn= 3504, C

ARS

= 0.1 µF; unless specified).

Parameter Conditions

Typ

+25˚C

Min/Max

+25˚C

Min/Max

Full Temp.

Range

Units

DYNAMIC PERFORMANCE

Residual Jitter 270 Mbps PRN sequence

(Notes 3, 4)

150 250 300 ps

pp

Acquisition Time 270 Mbps PRN sequence 6 x 10

5

bit cells

Minimum Average Data Rate, f

CLK

Full Temperature Range

4.5V ≤ (V

CC−VEE

) ≤ 5.5V

(Note 3)

100 100 Mbps

0 to 70˚ 4.5V ≤ (V

CC−VEE

) ≤ 5.5V 40 Mbps

Maximum Average Data Rate, f

CLK

4.5V ≤ (VCC−VEE) ≤ 5.5V
(Note 3)

400 400 Mbps

Tracking and Capture Range 4.5V ≤ (V

CC−VEE

) ≤ 5.5V

(Notes 3, 5)

±

8.3

±

5.0/

±

13.0

±

2.5/

±

18.0

%

f

CLK

VCO Power Supply Sensitivity (Note 3)

±

0.8

±

1.2

±

1.3

%

V

VCO Temperature Sensitivity

±

250 ppm/˚C

Jitter Transfer Function −3 dB bandwidth

(Fractional Loop Bandwidth), λ

BW

RBW= 100Ω (Notes 6, 7) 0.05

%

f

CLK

RBW= 500Ω (Notes 6, 7) 0.25

%

f

CLK

RBW= 1000Ω (Notes 6, 7) 0.5

%

f

CLK

Jitter Transfer Function Peaking RBW= 500Ω, 270 Mbps

(Note 6)

<

0.1 dB

STATIC PERFORMANCE

Power Supply Current, I

EE

(Note 3) 105 125 133 mA

Voltage on Selected R

n

Resistor (Note 8) VCC−2.2 V

Voltage on Unselected R

n

Resistor (Note 8) V

CC

V

V

C/VC

Common-Mode Voltage, V

CM

(Note 8) VCC−1.5 V

V

C/VC

Diff-Mode Voltage Range, V

DM

(Note 8)

±

300 mV

DDI/DDI

Input Range Upper Limit, V

H

V

CC

V

Input Range Lower Limit, V

L

VEE+2.5 V

Minimum Differential Input Amplitude, V

∆

200 200 mV

Input Current (Note 3) 3 6 6 µA

SCO/SCO, SDO/SDO

Output Current, I

OUT

(Note 3) 11 9.3/12 8.6/12.7 mA

Output Voltage Swing, V

OUT

R

collector

=75Ω(Note 3) 725 625/900 mV

ACQ/WR, MUTE, RDO/RD1

Voltage Input — LOW, V

IL

(Note 9)

V

EE

+ 0.8 VEE+ 0.8 V

Voltage Input — HIGH, V

IH

(Note 3) VEE+ 2.0 VEE+ 2.0 V

Input Current (I

IN

) (Note 3)

±

100

±

500 nA

3 www.national.com

Electrical Characteristics (Continued)

(VCC= 0V, VEE= −5V, RBW= 500Ω;CZ= 0.1 µF; CP= 82 pF; Rn= 3504, C

ARS

= 0.1 µF; unless specified).

Parameter Conditions

Typ

+25˚C

Min/Max

+25˚C

Min/Max

Full Temp.

Range

Units

STATIC PERFORMANCE

CD, UNL, RDO/RD1 (Note 9)

Current Output — LOW, I

OL

VOL≤ VEE+0.5V 800 µA

Current Output — HIGH, I

OH

VOH≥ VCC−0.5V −700 µA

TIMING PERFORMANCE

Delay: SCO to SDO, t

d

200 ps

SCO Duty Cycle (Note 3) 50 44/56 44/56

%

Rise/Fall Time: SCO, SDO, t

r/tf

20%–80%,R

collector

=75Ω

(Note 10)

230 ps

SDO Duty Cycle Distortion 35 ps
Minimum Setup Time:

RDO/RD1 to ACQ/WR, t

SU

420 20 ns

Minimum Hold Time:

ACQ/WR to SS1/SS0, t

h

320 20 ns

Minimum Pulse Width:

ACQ/WR, t

w

520 20 ns

ARS Oscillator Period, t

OSC

(Note 3) 10.5 8.5/15.5 ms

CD Pulse Width, t

PW

(Note 11) 1 µs

MUTE Response Time, t

M

5ns

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: Min/Max ratings are based on product characterization and simulation. Individual parameters are tested as noted. Outgoing quality levels are determined
from tested parameters.

Note 3: J-level spec. is 100%tested at +25˚C.
Note 4: Peak-to-peak jitter is defined as 6 times the rms jitter.
Note 5: Tracking and capture range are specified as a percentage of the input data rate f

CLK

. The minimum and maximum are guaranteed so long as Rnhas been

chosen according to the equation in

Resistor Selection for Data Rates.

Note 6: Average data transition density of 1 transition per 2 bit cells.
Note 7: When the value of R

BW

changes it is necessary to also change the values of CPand CZ. See

Loop Filter Design.

Note 8: This information is provided for system troubleshooting purposes only.
Note 9: RD0/RD1 are inputs when AUTO = 0 and outputs when AUTO = 1.
Note 10: Includes typical pc board capacitance.
Note 11: The CD circuit is a retriggerable one-shot which retriggers on every data transition.
Note 12: Human body model, 1.5 kΩ in series with 100 pF.
Note 13: To maintain specified performance, SCO/SCO and SDO/SDO should not drop below this level.

www.national.com 4

Typical Performance Characteristics

DS100087-4 DS100087-5

DS100087-6 DS100087-7

DS100087-8 DS100087-9

5 www.national.com

Typical Performance Characteristics (Continued)

DS100087-10 DS100087-11

DS100087-12

www.national.com 6