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NTE1790 Datasheet

Integrated Circuit Video IF / Chroma Deflection

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NTE1790 pdf
NTE1790
Integrated Circuit
Video IF, Chroma Deflection
Description:
The NTE1790 combines all the functions required for an NTSC color TV system on a 64–Lead DIP
shrink type plastic package. This device is designed to have wide application capability, from a funda-
mental CTV application to a high–end MPX CTV with quasi–parallel SIF system, with minimal external
parts and adjustments. A quasi–parallel SIF system assures buzz free sound reproduction.
Features:
PIF Section
D 3–Stage Variable Gain PIF Amplifier
D High Speed Peak AGC with Dual Time Constants
D Single End AFT Output with Defeat Function
D A Delayed RF AGC Output (Reverse AGC)
D Sync Positive Detected Video Output Polarity
D Internal Black/White Noise Inverter
Quasi–Parallel Inter Carrier Detector
D 3–Stage Variable Gain Intercarrier IF Amplifier
D Independent Peak AGC
D Intercarrier Detector with 90 deg. Carrier Shifter
SIF Section:
D 3–Stage Limiter Amplifier
D Differential Peak Detector
D Separated Detector Output and Electronic Attenuater Input for Multiplex TV Sound Reception
D Excellent Electronic Attenuater
D Preamplifier with an NF Terminal
Video Section:
D 2nd Order Picture Sharpness (DC Control)
D Contrast Control with Uni–Color Function
D Brightness Control with Pedestal Clamping Circuit (Adjustable DC Restoration Ratio)
D Internal Vertical Blanking
Chroma Section:
D ACC Circuit
D Color Control Circuit
D Uni–Color Control Circuit
D Adjustment Free APC Circuit
D Tint Control Circuit With Sync Pulse Output
D Color Differential Outputs



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NTE

NTE1790 Datasheet Preview

NTE1790 Datasheet

Integrated Circuit Video IF / Chroma Deflection

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NTE1790 pdf
Deflection Section:
D Excellent Sync Separator
D Adjustment Free Count Down System
D Stable Vertical Synchronization
D SawTooth Type AFC
D Horizontal PreDriver
D XRay Protector
D Vertical Drive Amplifier
Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)
Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12V
Input Signal Level, ein . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Vpp
RF AGC Voltage, VRFAGC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15V
Horizontal Section Supply Voltage, VCCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12V
Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2660mW
Derate Above 25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212mW/°C
Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20° to +65°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55° to +150°C
Recommended Supply Voltage:
Parameter
PIF Section (Pin19)
QIF, SIF Section (Pin37)
Video, Chroma, Deflection Section (Pin16)
Horizontal Section (Pin58)
Symbol
Test Conditions
Min Typ Max Unit
8.5 9.0 9.5 V
8.5 9.0 9.5 V
8.5 9.0 9.5 V
6.3 6.8 7.3 V
AC Characteristics: (TA = +25°C, VCC = 9V, 6.8V unless otherwise specified)
Parameter
Symbol Test Conditions Min Typ
PIF Section
Input Sensitivity
IF AGC Gain Reduction
vin
GR
70 120
60 64
Video Bandwidth
BW 4.5
Video Ripple
0
Differential Phase
DP – –
Differential Gain
DG – –
Video White Peak
Noise Inverter
White Inverter
White Clamp
Black Inverter
Black Clamp
Carrier Suppression
V47
VWTH
VWCL
VBTH
VBCL
3.2 3.7
2.7 3.0
4.6 5.0
6.4 6.8
4.8 5.2
40
Harmonics Suppression
Input Impedance
Input Capacitance
AFT Center Voltage
No Signal
I2nd
RiPIF
CiPIF
40
1.75 2.5
24
5.1 6.5
Offset
––
Max Unit
200 µVrms
dB
MHz
±1 dB
5 deg.
10 %
4.4 V
3.3 V
5.4 V
7.2 V
5.6 V
dB
dB
3.25 k
8 pF
10.3 V
±3 V


Part Number NTE1790
Description Integrated Circuit Video IF / Chroma Deflection
Maker NTE
Total Page 6 Pages
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