NTE NTE1846 Datasheet

NTE1846

Integrated Circuit

NTSC System Single–Chip Color TV Signal Processor

Description:

The NTE1846 is an integrated circuit in a 52–Lead DIP type package designed for use as a color TV
signal processor. This device contains signal processing functions for video IF, sound IF, video, color,
deflection signals, on a single chip.

Combined with a tuner and a simple output stage of discreet transistors, the NTE1846 enables more
rationalized designs for color TV sets.

Features:

D Large Integration Enables Rationalization and High Reliability of Equipment and Low Power

Consumption.

D A Direct Output Pin for Sound FM Detector is Provided, Applicable to Sound Multiplexing.
D The Most Appropriate Constants can be Set by the Synchronization Separation Input Pins for

Horizontal and Vertical Deflection.

D No Horizontal Free Run Frequency Adjustments.
D Capable of AFT Defeat, Sound Muting
D DC Volume Controls Picture Quality, Contrast, Luminance, Color Saturation, Tint, and Volume.

Application:

NTSC System Color Television Set

Absolute Maximum Ratings

Supply Voltage, V
Power Dissipation, P
Operating Temperature Range, T
Storage Temperature Range, T

Recommended Operating Conditions:

Supply Voltage 9V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Horizontal Supply Current 14mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating Supply Voltage 8.5V to 9.5V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating Horizontal Supply Currents 12mA to 16mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CC

D

: (TA = +25°C, unless otherwise specified)

opr

stg

1.4W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–20° to +65°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–40° to +125°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Pin Connection Diagram

Electronic Attenuator Control

FM Demodulator Coil

De–Emphasis, Sound Direct I/O

Audio Driver Output

Audio Negative Feedback, Bypass

IF AGC Filter

RF AGC Control

VIF, SIF Power Supply

Horizontal Power Supply

AFC Filter

AFC Flyback Pulse Inpu

32f

OSC

X–Ray Protector Signal Input

Sawtooth Wave Generator Capacitor

Rated Current Pull–In

Vertical AC/DC Feedback Input

VCD Power Supply

Horizontal Pre–Drive Output

H

Vertical Output

Tint Control

Video Output

1
2
3
4
5
6
7
8GND
9VIF Input 44

10VIF Input
11
12 41
13
14 39
15 38

C

16
17Vertical Synchronizing Signal
18Vertical OSC
19
20
21
22
23
24 29
25 28
26 27

52

RF AGC Output
Video Detector Output

51
50

AFT Output
Brightness Control

49
48 SIF Input
47

AFT Coil
Video Detector Coil

46

Video Detector Coil

45

Vertical Synchronization Separation Input

43

Synchronizing Output
Horizontal Synchronization Separation Input

42

Pedestal Holding

40

Video Input 1
Video Input 2
Contrast Control

37 Video Tone Control
36 Color Signal Input
35

GND

34

ACC Filter

33

Killer Filter
APC Filter

32

3.58MHz OSC

31
30

Color Saturation Control
G – Y Demodulated Output
B – Y Demodulated Output
R – Y Demodulated Output

52 27

126

1.813 (46.05) Max

.512 (13.0)

.217

(5.5)

Max

.070 (1.77)

1.750 (44.5)

.118

(3.0)

.600 (15.24)

Min