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NTE7058
Integrated Circuit
Single Chip TV NTSC System
Description:
The NTE7058 combines all the functions required for an NTSC color TV system in a 64–Lead DIP
type plastic package. This device is designed to offer a wide capability of applications from fundamental CTV to high–end MPX CTV with a quasi–parallel SIF system, requiring 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 Delayed RF AGC Output (Reverse AGC)
D Sync Positive–Detected Video Output Polarity
D Internal Black/White Noise Inverter
Quasi–Parallel Intercarrier Detector
D 3–Stage Variable Gain Intercarrier IF Amplifier
D Independent Peak AGC
D Intercarrier Detector with 90° Carrier Shift
SIF Section
D 3–Stage Limiter Amplifier
D Differential Peak Detector
D Separated Detector Output and Electronic Attenuator Input for Multiplex TV Sound Reception
D Excellent Electronic Attenuator
D Preamplifier with NF Terminal
Video Section
D 2nd Order Picture Sharpness (DC Control)
D Contrast Control with Unicolor Function
D Brightness Control with Pedestal Clamping Circuit (Adjustable DC Restoration Ratio)
D Internal Vertical Blanking
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Features (Cont’d):
Chroma Section
D ACC Circuit
D Color Control Circuit
D Unicolor Control Circuit
D Adjustment–Free APC Circuit
D Tint Control Circuit with Sync Pulse Output
D Color Differential Outputs
Deflection Section
D Excellent Sync Separator
D Adjustment–Free Countdown System
D Stable Vertical Synchronization
D Sawtooth–Type AFC
D Horizontal Predriver
D X–Ray Protector
D Vertical Drive Amplifier
Absolute Maximum Ratings: (TA = +25°C)
Power Supply Voltage, V
Input Signal Voltage, e
RF AGC Voltage, V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
in
RF AGC
5V
Horizontal Section Supply Voltage, VCCH 12V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Dissipation, P
D
2660mW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Derate Above TA = +25°C 21.2mW/°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Temperature Range, T
Storage Temperature Range, T
stg
opr
–20° to +65°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–55° to +150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
P–P
15V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Block Diagram
64 63 62 61 60 59 58857956105511541253
Out
H
32f
H
H Vcc
VCO
H C/D V C/D V Integ Contrast
X–Ray
Protector
f VCO
SC
Killer Det
APC
Det
Chroma Amp 1
Chroma Amp 2
1 2 3 4 5 6 7
52 51 50164917481847194620452144
SharpnessV. OutSync SepH. AFC
ACC Det
Y OutTint Demo
Det
GND
Active
Filter
DC Clamp
V/C/D
Vcc
PIF
Vcc
13 14 15
IF Amp
43 42 41 40 39 38 372936303531343233
AFT
AFTVideo Det
IF AGCRF AGC
PIF
GND
Q–SIF
GND
Q–IF
Amp
Q–SIF
Det
Q–IF
Amp
Vcc
90
Audio
Out
SIF LimSIF
°
SIF Det
Att
22 23 24 25 26 27 28
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Pin Connection Diagram
X–Ray Protect
Tint Control
Color Control
VCO
f
SC
Killer Filter
f
VCO
SC
APC Filter
Contrast Control
R–Y Output
G–Y Output
B–Y Output
GND
–Y Output
Pedestal Clamp
Brightness
V/C/D
9V V
CC
Bypass
RF AGC Delay
9V V
PIF
CC
PIF Input
PIF Input
PIF AGC Time Constant
PIF AGC Time Constant
QIF AGC Time Constant
Preamp Output
Volume Control
FM Detector Tank
GND
QIF Input
QIF Input
NFB
Audio Input
1
2
3
4
5
6
7
8 57
9 56
10 55
11 54
12 53
13
14
15
16 49
17 48
18 47
19 46
20 45
21 44
22
23
24
25
26
27
28
29 36
30 35
31 34
32 33
64
Horizontal Driver Output
63
H V
CC
62
32 fH OSC
H AFC Time Constant
61
60
Flyback Pulse Input
59
Sync Sep Input
Sync Sep Time Constant
58
(Filter)
Vertical NFB
Vertical Size
VerticalRamp
Vertical Output
Video Input
52
Differential Input
51
Picture Sharpness
50
GND
Chroma Input
ACC Filter
Video Output
RF AGC Output
Video Detector Tank
Video Detector Tank
43
AFT Tank/Defeat
42
AFT Output
41
40
39
38
37
Output
4.5MH
Z
GND
I/C Detector
I/C Detector
Q–SIF
9V V
CC
SIF Input
SIF Bias
Detector Output
FM Detector Tank
64 33
132
2.270 (57.65) Max
.708 (18.0)
Min
.236
(6.0)
Max
.070 (1.78)
.106 (2.7) Min
.750 (19.0)
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