NTE NTE984 Datasheet

NTE984

Integrated Circuit

TV Video IF System

Description:

The NTE984 is a monolithic integrated circuit in a 16–Lead DIP type package designed to perform
IF amplification, video d etection, a nd v i deo–amplifier f unctions i n c olor a nd m onochrome T V r eceivers.

Features:

D Improved AGC, Fast Response, Sample and Hold Keyed
D High Gain Wideband IF Amplifiers
D Delayed AGC Output for Tuner
D Gain Reduction with Excellent Stability
D Linear Video Detector
D Video Amplifier
D Low Noise
D Internal Shunt Regulator
D For Color of Monochrome

Absolute Maximum Ratings:

DC Supply Voltage:

Between Pin15 and Pin4 16V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Between 470Ω Connected to Pin12 and Pin14 35V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DC Supply Current:

At Pin15 20mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

At Pin12 30mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Device Dissipation (T

≤ +55°C), P

A

D

Derate Linearly Above +55°C 7.9mW/°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating Ambient Temperature Range, T
Storage Temperature Range, T

stg

A

Lead Temperature (During Soldering, 1/16” ±1/32” from case, 10sec max), T

750mW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–40° to +85°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–65° to +150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

L

+265°C. . . . . . . . . . .

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

Parameter Symbol Test Conditions Min Typ Max Unit

Operating Supply Voltage V
Supply Current I
Shunt Regulator Voltage V
Shunt Regulator Current I
Tuner AGC High Voltage V
Tuner AGC Low Voltage V
AGC Current I
AGC Peak Current I

Horizontal Key Input Through 100kΩ connected to Pin1 25 – 35 V
Video Output High Voltage V
Video Output Low Voltage V
Sensitivity Voltage V
Noise – – 12 mV
Chroma 45.75MHz, 10mV; 42.17MHz, 3mV 0.7 – 1.6 V
AFT Drive 35 – 85 mV
Distortion 50kHz, 80% Modulated,

Delay Voltage Through 15kΩ connected to Pin7,

Note 1 12.0 – 14.2 V

15

15

12

V12 = 10.5V 6 – 20 mA

12

10
10

Non–Keyed 80 – 500 µA

2

Keyed Source Current 0.7 – 3.0 mA

2

Keyed Sink Current 150 – 680 µA

At Zero Carrier 7 – 10 V

16

At 30mV Input 0.9 – 2.0 V

16

At 400µV Input 0.9 – 5.0 V

16

Sync Tip Equiv. 30mV

Note 2

rms

3 – 15 mA

10.9 – 13.0 V

18.5 – 21.0 V

0.3 – 1.3 V

– – 10 %

0 – V

15

rms

rms

rms

V

Note 1 V15 Min should be at least 0.6V above Terminal 12 potential. Lower voltage may cause some

“white” compression.

Note 2 Zero voltage corresponds to maximum delay at signal input + 30mV

Pin Connection Diagram

Key Pulse Input

AGC Filter

A1 Input

GND

Clamp Capacitor

A1 Output/A2 Input

AGC Delay

IF AGC Bias

1
2

3
4
5
6
7
8

Video Output

16
15

(+) V
Substrate

14
13

Detector Bias

12

(+) V

11

A3 Input and Detector

10

Tuner AGC

9

A2 Output

2

S

1 Shunt Reg

S

(RMS)

.