CLC020.pdf

February 2000

CLC020

SMPTE 259M Digital Video Serializer with Integrated

Cable Driver

General Description

The CLC020 SMPTE 259M Digital Video Serializer with Inte-

grated Cable Driver is a monolithic integrated circuit that en-

codes, serializes and transmits bit-parallel digital data con-

forming to SMPTE 125M and SMPTE 267M component

video and SMPTE 244M composite video standards. The

CLC020 can also serialize other 8 or 10-bit parallel data. The

CLC020 operates at data rates from below 100 Mbps to over

400 Mbps. The serial data clock frequency is internally gen-

erated and requires no external frequency setting compo-

nents, trimming or filtering * . Functions performed by the

CLC020 include: parallel-to-serial data conversion, data en-

coding using the polynomial (X 9 +X 4 +1), data format conver-

sion from NRZ to NRZI, parallel data clock frequency multi-

plication and encoding with the serial data, and coaxial cable

driving. Input for sync (TRS) detection disabling and a PLL

lock detect output are provided. The CLC020 has an exclu-

sive built-in self-test (BIST) and video test pattern generator

(TPG) with 4 component video test patterns, reference

black, PLL and EQ pathologicals and modified colour bars, in

4:3 and 16:9 raster and both NTSC and PAL formats * . Sepa-

rate power pins for the output driver, VCO and the digital

logic improve power supply rejection, output jitter and noise

performance.

The CLC020 is the ideal complement to the CLC011B

SMPTE 259M Serial Digital Video Decoder, CLC014 Active

Cable Equalizer, CLC016 Data Retiming PLL (clock-data

separator),

Features

n SMPTE 259M serial digital video standard compliant

n No external serial data rate setting or VCO filtering

components required *

n Built-in self-test (BIST) and video test pattern generator

(TPG) with 16 internal patterns *

n Supports all NTSC and PAL standard component and

composite serial video data rates

n HCMOS/TTL-compatible data and control inputs and

outputs

n 75

ECL-compatible, differential, serial cable-driver

outputs

n Fast VCO lock time: < 75 µs

n Single +5V TTL or −5V ECL supply operation

n Low power: 235 mW typical

n 28-lead PLCC package

n Commercial temperature range 0˚C to +70˚C

Applications

n SMPTE 259M parallel-to-serial digital video interfaces

for:

— Video cameras

— VTRs

— Telecines

— Video test pattern generators and digital video test

equipment

n Non-SMPTE video applications

n Other high data rate parallel/serial video and data

systems

* Patents applications made or pending.

CLC018

8X8

Digital

Crosspoint

Switch

and

CLC006

CLC007

Cable

Drivers,

for

complete

parallel-serial-parallel,

high-speed

data

processing

and

transmission system.

The CLC020 is powered from a single 5V supply. Power dis-

sipation

back-matched output loads. The device is packaged in a

JEDEC 28-lead PLCC.

typically

235

including

two

Typical Application

DS100917-12

DS100917

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Block Diagram

DS100917-1

Connection Diagram

DS100917-2

28-Pin PLCC

Order Number CLC020ACQ

See NS Package Number V28A

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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 DD −V SS )

Package Thermal Resistance

q JA 28-lead PLCC

85˚C/W

q JC 28-lead PLCC

35˚C/W

Storage Temp. Range

−65˚C to +150˚C

Junction Temperature

+150˚C

6.0V

Lead Temperature (Soldering 4 Sec)

+260˚C

CMOS/TTL Input Voltage (V I )

−0.5V to (V DD + 0.5V)

> 2.5 kV

ESD Rating (HBM)

CMOS/TTL Output Voltage (V O )

−0.5V to (V DD + 0.5V)

> 300 V

ESD Rating (MM)

CMOS/TTL Input Current (single input)

V I =V SS −0.5V

Transistor Count

33,400

−5 mA

V I =V DD +0.5V

+5 mA

Recommended Operating

Conditions

Supply Voltage (V DD −V SS )

± 1mA

Input Current, Other Inputs

± 10 mA

CMOS/TTL Output Source/Sink Current

SDO Output Source Current

20 mA

5.0V ± 10%

CMOS/TTL Input Voltage

V SS to V DD

3.0V ± 10%

Maximum DC Bias on SDO pins

Operating Free Air Temperature (T A )

0˚C to +70˚C

DC Electrical Characteristics

Over Supply Voltage and Operating Temperature ranges, unless otherwise specified (Notes 2, 3).

Symbol

Parameter

Conditions

Reference

Min

Typ

Max

Units

V IH

Input Voltage High Level

D0 through D9,

P CLK , TPG _EN

and Sync.

Detect Enable

2.0

V DD

V IL

Input Voltage Low Level

V SS

0.8

I IH

Input Current High Level

V IH =V DD

+40

+60

µA

I IL

Input Current Low Level

V IL =V SS

-1

-20

µA

V OH

CMOS Output Voltage

High Level

I OH = −10 mA

Lock Detect,

Test Out

2.4

4.7

V DD

V OL

CMOS Output Voltage

Low Level

I OL = +10 mA

0.0

0.3

V SS + 0.5V

V SDO

Serial Driver Output

Voltage

R L =75

1%,

R REF = 1.69 k

SDO, SDO

700

800

900

mV P-P

1%,

Figure 2

I DD

Power Supply Current,

Total

R L =75

1%,

R REF = 1.69 k

1%,

P CLK = 27 MHz, Figure 2,

NTSC Colour Bar Pattern

AC Electrical Characteristics

Over Supply Voltage and Operating Temperature ranges, unless otherwise specified (Note 3).

Symbol

Parameter

Conditions

Refer ence

Min

Typ

Max

Units

BR SDO

Serial data rate

R L =75

, AC coupled, (Note 5)

SDO, SDO

100

400

Mbps

t j

Serial output jitter

270 Mbps,Figure 2, (Note 6)

SDO, SDO

220

ps P-P

t jit

Serial output jitter

(Notes 4, 5)

SDO, SDO

100

200

ps P-P

t r ,t f

Rise time, Fall time

20%–80%, (Notes 4, 5)

SDO, SDO

500

800

1500

Output overshoot

SDO, SDO

t LOCK

Lock time

270 Mbps, (Notes 5, 7)

µs

t SU

Setup time

Figure 3

D N to P CLK

t HLD

Hold time

Figure 3

D N fro m P C LK

1.5

L GEN

Output inductance

(Note 4)

SDO, SDO

R GEN

Output resistance

(Note 4)

SDO, SDO

25k

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AC Electrical Characteristics (Continued)

Note 1: “Absolute Maximum Ratings” are those parameter values beyond which the life and operation of the device cannot be guaranteed. The stating herein of

these maximums shall not be construed to imply that the device can or should be operated at or beyond these values. The table of “Electrical Characteristics” speci-

fies acceptable device operating conditions.

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 V SS =0V.

Note 3: Typical values are stated for V DD = +5.0V and T A = +25˚C.

Note 4: Specification is guaranteed by design.

Note 5: R L =75

1%, See Test Loads and Figure 2.

Note 6: CLC020 mounted in the SD020EVK board, configured in BIST mode (NTSC color bars) with P CLK = 27MHz derived from Tektronix TG2000 black-burst ref-

erence. Timing jitter measured with Tektronix VM700T using jitter measurement FFT mode, frame rate, 1kHz filter bandwidth, Hanning window.

Note 7: Measured from rising-edge of first P CLK cycle until Lock Detect output goes high (true).

, AC-coupled @ 270 M bps ,R REF = 1.69 k

Test Loads

DS100917-3

All resistors in Ohms, 1% tolerance.

FIGURE 1. Test Loads

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Test Loads (Continued)

DS100917-4

FIGURE 2. Test Circuit

Timing Diagram

DS100917-5

FIGURE 3. Setup and Hold Timing

Device Operation

The CLC020 SMPTE 259M Digital Video Serializer is used in

digital video signal origination and processing equipment:

cameras, video tape recorders, telecines, video test equip-

ment and others. It converts parallel component or compos-

ite digital video signals into serial format. Logic levels within

this equipment are normally TTL-compatible as produced by

CMOS or bipolar logic devices. The encoder outputs

ECL-compatible serial digital video (SDV) signals conform-

ing to SMPTE 259M-1997. The CLC020 operates at all stan-

dard SMPTE and ITU-R parallel data rates.

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