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NTE1483

Integrated Circuit

Video IF System

Description:

The NTE1483 is a silicon monolithic integrated circuit in a 22–Lead DIP type package designed for

use in the PIF section in color TV receivers. As it contains a separate picture detector and sound IF

detector, this device offers low buzz characteristics. The NTE1483 has all functions including picture

IF amplifier (4

th

), picture low–level detector, sound IF detector, AFC detector, IF AGC, RF AGC and

picture amplifier.

Features:

D

Low Buzz Characteristics for Audio Multiplex TV

D

High Input Sensitivity

D

Wide AGC Control Range

D

Contains Differential Mode Input for use with SAW Filter

Absolute Maximum Ratings:  (T

A

 = +25

°

C unless otherwise specified)

Supply Voltage (Pin13), V

13

max

15V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Pin22 Current, I

22

max

100mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Pin14 Current, I

14

max

±

3mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Power Dissipation (T

A

 

 +65

°

C), P

D

900mW

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Operating Temperature Range, T

opr

–15

°

 to +65

°

C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Storage Temperature Range, T

stg

–40

°

 to +125

°

C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Electrical Characteristics: (T

A

 = +25

°

C, V

CC

 = 12V, R

A

 = 120

, f

p

 = 58.75MHz unless otherwise

specified)

Parameter

Symbol

Test Conditions

Min

Typ

Max

Unit

Total Supply Current

I

CC

Zero Carrier

55

70

90

mA

Pin13 Current

I

13

Zero Carrier

20

30

40

mA

Pin22 Curent

I

22

Zero Carrier

35

40

50

mA

Pin22 Voltage

V

22

6.6

7.2

7.6

V

Maximum RF AGC Voltage

V

17H

V

16

 = 7V

9.0

9.2

10.0

V

Minimum RF AGC Voltage

V

17L

V

16

 = 0

0

0.5

V

Pin11 Voltage

V

11

3.7

4.1

4.7

V

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Electrical Characteristics (Cont’d): (T

A

 = +25

°

C, V

CC

 = 12V, R

A

 = 120

, f

p

 = 58.75MHz unless

otherwise specified)

Parameter

Symbol

Test Conditions

Min

Typ

Max

Unit

Pin10 Voltage

V

10

5.0

6.5

7.7

V

Maximum AFT Output Voltage

V

10H

V

7

 = 4.8V, V

8

 = 5.1V

11.0

V

Minimum AFT Output Voltage

V

10L

V

7

 = 5.1V, V

8

 = 4.8V

1.0

V

Input Sensitivity

v

i(lim)

fm = 400Hz, m = 40%, v

o

 = 0.8V

P–P

25

32

41

dB

µ

AGC Range

G.R.

fm = 10kHz, m = 40%, v

o

 = 0.8V

P–P

60

80

dB

Maximum Input Voltage

v

i(Max)

fm = 10kHz, m = 40%, v

o

 = 0.8V

P–P

100

55

mV

rms

Signal–to–Noise Ratio

S/N

fm = 15.75kHz, m = 80%, v

o

 = 1.5V

P–P

,

v

i

 = 10mV

rms

50

dB

SIF Output Voltage

v

o(SIF)

fm = 400Hz, m = 40%, v

i(P)

 = 3mV

rms

,

f

s

 = 54.25MHz, v

i(s)

 = 300

µ

V

rms

12

25

50

mV

rms

Carrier Leak

CL

(DET)

v

i

 = 20mV

rms

5

50

mV

rms

Picture Frequency Response

f

C

m = 40%, v

i

 = 20mV

rms

5

13

MHz

Differential Gain

DG

f

p

 = 58.75MHz, Stair Step, fm = 3.58MHz,

5

%

Differential Phase

DP

m = 85%, 14% Modulated White to Sync

Level, v

o(DET)

 = 1.4V

P–P

5

deg

AFT Control Sensitivity

S

f

fm = 400Hz, m = 40%, v

o

 = 0.8V

P–P

50

150

mV/kHz

AFT Band Width

BW

fm = 400Hz, m = 40%, v

o

 = 0.8V

P–P

0.2

1.1

2.1

MHz

PIF Input Resistance

R

i

1.5

k

PIF Input Capacitance

C

i

3.5

pF

V

CC

 1

V

CC

 2

Pin Connection Diagram

RF AGC Control

AGC Filter

Video Output

AFT Tuning

AFT Tuning

RF AGC Output

1

2

3

4

Video IF Output

Video IF Output

GND

LLD Input

5

SIF Output

6

AFT

7

Video Det Tuning

8

Video Det Tuning

22

21

20

19

Compensation

Compensation

Video IF Input

18

Video IF Input

17

16

15

Keying Pulse

9

14

10

13

AGC Level Control

11

12

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22

12

1

11

1.300 (33.0)

1.000 (25.4)

.100 (2.54)

.410

(11.41)

.216

(5.5)

.110 (2.79)

.400

(10.16)