Motorola MC141627FT Datasheet

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SEMICONDUCTOR TECHNICAL DATA

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The Advanced PAL Comb Filter–II is a video signal processor for VCRs,
LDPs, and TVs. It separates the Luminance Y and Chrominance C signal from
the NTSC/PAL composite signal by using digital signal processing techniques
which minimize dot–crawl and cross–color. The built–in 4xFSC PLL circuit
allows a subcarrier signal input, which generates 4xFSC clock for video signal
processing. This filter allows a video signal input of an extended frequency
bandwidth by using a 4xFSC clock. The built–in vertical enhancer circuit
reduces noise and dot crawl on the Luminance Y signal. The built–in A/D and
D/A converters allow easy connection to analog video circuits.

• Built–In High Speed 8–Bit A/D Converter

• Four Line Memories (4540 Bytes)

• Advanced Comb–II Process

• Built–In Vertical Enhancer

• Vertical Dot Reduction Process

• Two Built–In High Speed 8–Bit D/A Converters

• Built–In 4xFSC PLL Circuit

• Built–In Clamp Circuit

• Digital Interface Mode

• On–Chip Reference Voltage for A/D Converter

PIN ASSIGNMENT

FT SUFFIX

QFP PACKAGE

CASE 898

1

48

ORDERING INFORMATION

MC141627FT Quad Flat Package (QFP)

D5D6D7C0C1

D4

36

D3

37
D2
D1

D0

BYPASS

VH

GND(D)

V

CC(D)

FSC

N/M

PAL/NTSC

Comb/BPF

This document contains information on a product under development. Motorola reserves the right to change or discontinue this product without notice.

REV 0.1
8/96

48

1

CC

PCO

BIAS

FILIN

OV

NC = NO CONNECTION

C2

out

Y

CC(DA)

V

GND(DA)

C3

C4C5C6

out

C

REF(DA)

bias

I

GND(AD)

C7

25

24

13

12

CC(AD)

V

TE1
TE0
MODE1
MODE0
CLK(AD)
GND(D)
NC

CLC
CL

out

V

in

RBT
RTP

 Motorola, Inc. 1996

MOTOROLA

MC141627

1

NC (D3)

NC (D2)

BLOCK DIAGRAM

NOISE LEVEL 2 (D5)

NOISE LEVEL 3 (D6)

NOISE LEVEL 4 (D7)

WHITE LEVEL 1 (C0)

WHITE LEVEL 2 (C1)

NOISE LEVEL 1 (D4)

36 35 34 33 32 31 30 29 28 27 26 25

37

PORT PORT

38

WHITE LEVEL 3 (C2)

WHITE LEVEL 4 (C3)

BLACK LEVEL 1 (C4)

BLACK LEVEL 2 (C5)

BLACK LEVEL 3 (C6)

BLACK LEVEL 4 (C7)

24

23

TE1

TE0

NC (D1)

NC (D0)

BYPASS

VH

GND(D)

V

CC(D)

FSC

N/M

PAL/NTSC

COMB/BPF

39

40

41

42

43

44

45

46

47

48

MODE

1H/2H

PROCESSING

ADAPTIVE
VERTICAL

ENHANCER

MEMORY

MODE

1 2 3 4 5 6 7 8 9 10 11 12

CC

PCO

OV

BIAS

VERTICAL DOT

PROCESSING

CLKBUF

CLOCK

GEN

FILIN

1H/2H

ACF–II

GND(DA)

Y

out

DACDAC

CC(DA)

V

CONTROL

LOGIC

CONTROL

LOGIC

out

C

I

bias

REF(DA)

bias

I

CLKBUF

CLAMP

GND(AD)

ADC

CC(AD)

V

22

21

20

19

18

17

16

15

14

13

MODE1

MODE0

CLK(AD)

GND(D)

NC

CLC

CL

out

V

in

RBT

RTP

MC141627
2

*( ): Digital input mode

MOTOROLA

ABSOLUTE MAXIMUM RATINGS*

Characteristic Symbol Value Unit

DC Supply Voltage (Referenced to GND) V
DC Input Voltage (Referenced to GND) V
DC Output Voltage (Referenced to GND) V
DC Input Current (per Pin) I
DC Output Current (per Pin) I
Power Dissipation P
Storage Temperature T

*Maximum Ratings are those values beyond which damage to the device may occur . Func-

tional operation should be restricted to the limits in the Electrical Characteristics tables or
Pin Descriptions section.

CC

in

out

in

out

D

stg

– 0.5 to + 7.0 V
– 1.5 to VCC + 1.5 V
– 0.5 to VCC + 0.5 V

± 20 mA
± 25 mA

750 mW

– 65 to + 150 °C

This device contains protection circuitry to
guard against damage due to high static
voltages or electric fields. However, precau­tions must be taken to avoid applications of any
voltage higher than maximum rated voltages to
this high–impedance circuit. For proper opera­tion, Vin and V
range GND ≤ (Vin or V

Unused inputs must always be tied to an
appropriate logic voltage level (e.g., either
GND or VCC). Unused outputs must be left
open.

should be constrained to the

out

) ≤ VCC.

out

GENERAL ELECTRICAL CHARACTERISTICS (V

Characteristic Symbol Min Typ Max Unit Notes

Supply Voltage VCC* 4.75 5.0 5.25 V
Operating Supply Current (at Normal Mode) I
Operating Power Dissipation (at Normal Mode) P
Ambient Operating Temperature T

*V

CC(AD)

, V

CC(DA)

, V

CC(D)

voltage.

CLOCK INPUT ELECTRICAL CHARACTERISTICS (V

Characteristic

Subcarrier Input Frequency f
Clock Frequency CLK — 17.734475 — MHz 2
FSC Clock Input Level V
High Level Input Voltage CLK(AD) V
Low Level Input Voltage CLK(AD) V
Clock Duty Cycle CLK/CLK(AD) Dty 45 50 55 % 4

NOTES:

1. Color subcarrier input [FSC = (455/2) fh] locked on the burst signal of the input video signal. AC coupling input by external capacitor.

2. The internal circuit operates by 4 times clock using FSC pin input at normal (FSC) mode.
The internal circuit operates by FSC pin input clock at expected normal (FSC) mode.

3. Sine wave input.

4. CLK(AD) is available only during digital input comb filter mode.

= 5.0 V, TA = 25°C ± 3°C, Unless Otherwise Noted)

CC

CC

D
A

= 5.0 V, TA = 25°C ± 3°C, Unless Otherwise Noted)

CC

Symbol Min Typ Max Unit Notes

c

fc

ICH

ICL

— 65 100 mA
— 325 525 mW

– 20 — 75 °C

— 4.43618 — MHz 1

1 — — V p–p 3

3.5 — — V 4
— — 1.1 V 4

MOTOROLA

MC141627

3

ADC ELECTRICAL CHARACTERISTICS (V

Characteristic

Resolution — — — 8 Bits
Integral Nonlinearity INL — ± 1.0 ± 1.5 LSB
Differential Nonlinearity DNL — ± 0.5 ± 1.0 LSB
Top Reference Level V
Bottom Reference Level V
Maximum Analog Input Range During Self Reference V

= 5.0 V, TA = 25°C ± 3°C)

CC

Symbol Min Typ Max Unit

TPS
BTS

ins

2.4 2.5 2.6 V

0.4 0.5 0.6 V

1.9 2.0 2.1 V p–p

DIGITAL ELECTRICAL CHARACTERISTICS (V

Characteristic

High Level Input Voltage MODE0, MODE1, TE0, TE1, BK,

Low Level Input Voltage MODE0, MODE1, TE0, TE1, BK, VH,

Input Leakage Current MODE0, MODE1, TE0, TE1, BK, VH,
[Vin = V

Data Setup Time (at Digital Input Comb Filter Mode) D0 – D7 t
Data Hold Time (at Digital Input Comb Filter Mode) D0 – D7 t
Data Input Rise Time (at Digital Input Comb Filter Mode) D0 – D7 t
Data Input Fall Time (at Digital Input Comb Filter Mode) D0 – D7 t

FILTERING CHARACTERISTICS (V

Y/C Separation — 40 — — dB
Band–Pass Filter Bandwidth (at – 3 dB) [( ): NTSC] — — ± 0.90

or GND(D)] C0 – C7, D0 – D7

CC(D)

= 5.0 V, TA = 25°C ± 3°C)

CC

Characteristic

DAC ELECTRICAL CHARACTERISTICS (V

Characteristic

Resolution — — — 8 Bits
Integral Nonlinearity INL — — ± 1 LSB
Differential Nonlinearity DNL — — ± 0.5 LSB
Analog Output Voltage, Y
Analog Output Voltage, C
Full Scale Voltage, Y
Full Scale Voltage, C
Zero Scale Voltage, Y
Zero Scale Voltage, C
Output Impedance Z

out

out

out

out

out

out

= 5.0 V, TA = 25°C ± 3°C)

CC

VH, C0 – C7, D0 – D7

C0 – C7, D0 – D7

= 5.0 V, TA = 25°C ± 3°C)

CC

Symbol Min Typ Max Unit

V

IH

V

IL

I

inl

ds
dh

r

f

Symbol Min Typ Max Unit

Symbol Min Typ Max Unit

V

YO

V

CO

V

YFS

V

CFS

V

YZS

V

CZS

O

3.15 — — V

— — 1.1 V

— — ±10 µA

0 — — ns
20 — — ns
— — 10 ns
— — 10 ns

— MHz

(± 0.75)

1.1 1.2 1.3 V p–p

1.1 1.2 1.3 V p–p

1.3 1.5 1.7 V

1.3 1.5 1.7 V

0.1 0.3 0.5 V

0.1 0.3 0.5 V
— 100 300 Ω

MC141627
4

MOTOROLA

ADC – DAC GENERAL CHARACTERISTICS (V

Characteristic

Voltage Gain — – 4.4 — dB
Output Bandwidth (at – 3 dB at PAL) 6.4 7.3 — MHz
Differential Gain DG — — 5 %
Differential Phase DP — — 5 Deg
Bias Current (at I

= 10 kΩ) I

bias

= 5.0 V, TA = 25°C ± 3°C)

CC

Symbol Min Typ Max Unit

bias

— 135 — µA

CLAMP CIRCUIT CHARACTERISTICS (V

Characteristic

Clamp Mode Output Voltage* V

*Output of CL

BK/VH CHARACTERISTICS (V

Bypass Switching Time, at Normal Mode — 9 — Clock
VH Switching Time, at Normal Mode — 4 — Clock
Comb/BPF Switching Time, at Normal Mode — 16 — Clock

when connecting Vin – CL

out

Characteristic

= 5.0 V, TA = 25°C ± 3°C)

CC

VERTICAL ENHANCER LEVEL CHARACTERISTICS (V

Characteristic

Noise Slice Level, at Normal Mode 0 6 15 Bits
White Enhance Level, at Normal Mode 0 10 15 Bits
Black Enhance Level, at Normal Mode 0 11 15 Bits

GENERAL SIGNAL DELAY (V

PAL B/G/H/I Mode (2299.5 Clock) — 129.66 — µs
NTSC Mode (939.5 Clock) — 65.62 — µs
PAL N Mode (1867.5 Clock) — 130.34 — µs
PAL M Mode (1851.5 Clock) — 129.45 — µs

= 5.0 V, TA = 25°C ± 3°C)

CC

Characteristic

= 5.0 V, TA = 25°C ± 3°C)

CC

.

out

Symbol Min Typ Max Unit

Symbol Min Typ Max Unit

= 5.0 V, TA = 25°C ± 3°C)

CC

Symbol Min Typ Max Unit

Symbol Min Typ Max Unit

clys

— 0.6 — V

CLOCK

INPUT DATA

(D0 – D7)

t

ds

t

dh

Figure 1. Digital Signal Input Timing Diagram (During Digital Input Comb Filter Mode)

Clamp Circuit Characteristics (VCC = 5.0 V, TA = 25°C ± 3°C)

Clamp Mode Output Voltage, V

V

= (VTP – VBT) (N + 1) / 256 + VBT ± 50 mV

cly

(Non–input when connecting Vin – CL

cly

where N = Clamp Code Input (N < 255)

• If the calculated value of the output voltage, V

cly

> V

clys

, then V

• Clamp Value N is fixed, N = 4.

MOTOROLA

cly

t

r

= V

out

clys

t

f

)

MC141627

5