NTE747 Detector Datasheet

NTE747 Datasheet, PDF, Equivalent


Part Number

NTE747

Description

Integrated Circuit Low Level Video Detector

Manufacture

NTE Electronics

Total Page 2 Pages
Datasheet
Download NTE747 Datasheet


NTE747
NTE747
Integrated Circuit
Low Level Video Detector
Description:
The NTE747 is a low level video detector in an 8–Lead DIP type package featuring very linear video
characteristics and bandwidth. Designed for color and monochrome television receivers, replacing
the third IF, detector, video buffer, and the AFC buffer.
Features:
D Conversion Gain: 34dB Typ
D Video Frequency Response @ 6MHz < 1dB
D Input of 36mV Produces 3VP–P Output
D High Video Output: 7.7VP–P
D Fully Balanced Detector
D High Rejection of IF Carrier
D Low Radiation of Spurious Frequencies
Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)
Power Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24V
Supply Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26mA
Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1VRMS
Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 625mW
Derate Above 25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5mW/°C
Operating Ambient Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0° to +75°C
Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65° to +150°C
Electrical Characteristics: (TA = +25°C, V+ = 20V, Q = 30, fC = 45MHz unless otherwise specified)
Parameter
Pin Test Conditions Min Typ Max Unit
Supply Voltage Range
6
12 20 24
V
Supply Current
5, 6
– 15 –
mA
Zero Signal DC Output Voltage
4
6.8 7.7 8.3
V
Maximum Signal DC Output Voltage
4
–0–
V
Input Signal Voltage
7 3VP–P Video Output, 90% Modulation – 36 – mVRMS

NTE747
Electrical Characteristics: (TA = +25°C, V+ = 20V, Q = 30, fC = 45MHz unless otherwise specified)
Parameter
Pin Test Conditions Min Typ Max Unit
Maximum Output Voltage Swing
Carrier Rejection at Output
4
4
7.7 VPP
42 60
dB
Carrier Output Voltage
3dB bandwidth of IF carrier
3VPP Output, fout = fC
3VPP Output, fout = 2fC
7
1 mVPP
3 mVPP
80 MHz
3dB Bandwidth of Video Output
4
12.3 MHz
Input Resistance
7
3.5
k
Input Capacitance
7
3.0
pF
Internal Resistance
2, 3 Across Tuned Circuit
4.4
k
Internal Capacitance
2, 3
1.0
pF
AFT Buffer Output
AFT Buffer DC Level
1 At Carrier Frequency, Note 1
1
350 mVPP
6.5
V
Note 1. Measured with 10 times probe.
Pin Connection Diagram
AFT Buffer 1
Tuned Circuit 2
Tuned Circuit 3
Primary Video Output 4
8 GND
7 IF Input
6 VCC
5 Aux Video Output
85
.260 (6.6)
14
.390 (9.9)
Max
.155
(3.93)
.300
(7.62)
.100 (2.54)
.300 (7.62)
.145 (3.68)


Features NTE747 Integrated Circuit Low Level Vide o Detector Description: The NTE747 is a low level video detector in an 8–Lea d DIP type package featuring very linea r video characteristics and bandwidth. Designed for color and monochrome telev ision receivers, replacing the third IF , detector, video buffer, and the AFC b uffer. Features: D Conversion Gain: 34d B Typ D Video Frequency Response @ 6MHz < 1dB D Input of 36mV Produces 3VP–P Output D High Video Output: 7.7VP–P D Fully Balanced Detector D High Reject ion of IF Carrier D Low Radiation of Sp urious Frequencies Absolute Maximum Rat ings: (TA = +25°C unless otherwise spe cified) Power Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24V Supply Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26mA I nput Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..
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