NTE NTE1177 Datasheet

NTE1177

Integrated Circuit

TV Luminance Processor

Description:

The NTE1177 is a monolithic silicon integrated circuit in a 14–Lead DIP type package that performs
the luminance processing functions of amplification; contrast, brightness and peaking control; blank­ing; and black–level clamping.

Features:

D Black–Level Clamping
D Linear DC Controls for Brightness, Contrast, and Peaking
D Horizontal and Vertical Blanking
D Operates with Standard or Tapped Delay Line

Absolute Maximum Ratings;

DC Supply Current (Into Pin13, Note 1), V
Device Dissipation (Up to TA = +55°C, Note 1), P

CC

D

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

Operating Ambient Temperature Range, T
Storage Temperature Range, T

stg

opr

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

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

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

L

59.5mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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

+265°C. . . . . . . . . . . . . . . . .

Note 1. Although the NTE1177 is rated for maximum dissipation of 750mW, it is recommended that

the current into Pin13 be limited by external circuit resistance to 39mA for a typical voltage
at Pin13 of 11.8V.

Electrical Characteristics:

Parameter Symbol

Static Characteristics (Bias Voltage = 6.1V)

Voltage at Pin13 V
Quiescent Voltage V

Current Into Pin13

Pin13 Connected
to +11V

(TA = +25°C unless otherwise specified)

Test Conditions

Switch Numbers

S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S11

Switch Positions

For Characteristic Measurements

13

V
I

13

2 1 1 2 2 4 1 2 2 1 1 11.0 11.8 13.2 V
2 1 1 2 2 3 1 2 2 1 1 3.3 4.0 5.7 V

4

2 1 1 2 2 2 1 2 2 1 1 7.1 7.7 8.3 V

7

2 1 1 2 2 3 1 2 2 1 2 10 19 30 mA

Min Typ Max Unit

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

Test Conditions

Switch Numbers

S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S11

Switch Positions

Parameter

Dynamic Characteristics (Bias Voltage = 5.8V)

Wide–Band Gain (Note 2) 1 1 1 2 1 2 1 1 1 2 1 6.0 8.3 11.0 dB
Contrast Gain Reduction (Note 3) 1 1 1 2 1 2 1 1 2 2 1 27 30 – dB
Peaking Gain (Note 2) 1 1 2 2 1 2 1 1 1 2 1 15.0 18.4 22.0 dB
Peaking Gain Reduction (Note 4) 1 1 2 2 1 2 1 1 1 2 1 16 18 – dB
Max. Intermodulation Distortion

2V (Note 5)

3V (Note 6) 1 – 1 1 1 2 – 2 1 2 1 – 40 – %

1 – 1 1 1 2 – 2 1 2 1 – 20 – %

For Characteristic Measurements

Min Typ Max Unit

Note 2. Set 50kH z g enerator f or 1 00mV

Adjust R1 Peaking C ontrol for minimum s etting. M easure

P–P

wide–band gain at Pin7.

Note 3. Set 50kHz generator for 100mV

. Adjust R1 for minimum setting. Measure contrast gain

P–P

reduction at Pin7.

Note 4. Set 50kHz generator for 100mV

. Adjust R1 for maximum setting. Measure peaking gain

P–P

reduction at Pin7.

Note 5. Adjust R1 for minimum setting. With S2 at switch position 1 and S7 at switch position 3, set

50kHz generator for 2V
100mV

. Then with S7 at switch position 2, measure downward modulation of the 1MHz

P–P

. Then with S2 at switch position 2, set 1MHz generator for

P–P

signal due to the 50kHz signal.

Note 6. Repeat step 5 except that the 50kHz generator must be set at 3V

14 8

Pin Connection Diagram

Video Input N.C.

Peaking Input
Peaking Input

Substrate GND

Clamp Inhibit

Clamped Video Out

1
2

3
4
5
6
7

14

Shunt Regulator

13

and Bypass

12

Clamp Inhibit Input

11

Peaking ControlVideo Output
Contrast Control

10

Blanking Input

9
8

Brightness Control

17

.785 (19.95)

Max

.100 (2.45)

.

P–P

.200 (5.08)

Max

.099 (2.5) Min

.300

(7.62)

.600 (15.24)