NTE NTE1779

NTE1779
Integrated Circuit
TV VIF Amp, Phase Lock Loop (PLL)
Description:
The NTE1779 is an integrated circuit in a 22–Lead DIP type package designed for color TV video IF
signal processing circuits.
Features:
D High Density One–Chip Integration of Video IF Amplifier, PLL Detector, Video Pre–Amplifier,
AGC and AFC Circuits
D PLL True Synchronous Detector Incorporates VCO
D Wide Pull–In Range by Time–Constant Auto–Changer of PLL Loop–Filter
D Selective Transformerless AFC Circuit
Absolute Maximum Ratings:
Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14.4V
Circuit Voltage
V1–8,16/V9–8,16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0V
V2–8,16/V9–8,16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0V
V3–8,16/V9–8,16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0V
V11–8,16/V9–8,16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0V
V19–8,16/V9–8,16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0V
Circuit Voltage
I10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –10/0.5mA
I12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –10/1mA
I17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –2/5mA
Power Dissipation (TA = +70°C), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1100mW
Operating Ambient Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20° to +70°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +150°C
Electrical Characteristics: (VCC = 12V, TA = +25°C unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
f = 58.75MHz, Vi = 80dBµ, m = 87.5%
1.8
2.05
2.3
VP–P
f = 58.75MHz, Vi = 80dBµ, m = 110%
2.1
2.6
3.1
VP–P
VO = –3dB
51
55
60
dBµ
101
104
–
dBµ
f = 58.75MHz, Vi = 80dBµ, m = 87.5%
–
2
6
%
f = 58.75MHz, Vi = 80dBµ, m = 110%
–
5
13
%
f = 58.75MHz, Vi = 80dBµ, m = 87.5%
–
2
5
deg
f = 58.75MHz, Vi = 80dBµ, m = 110%
–
5
12
deg
P/S = 20dB
98
101
104
dBµ
IF Amplifier Detector
Video Detector Output
Input Sensitivity
Maximum Allowable Input
Differential Gain
Differential Phase
Output Voltage (SIF)
VO
S(IN)
VI9max)
DG
DP
VO
Electrical Characteristics (Cont’d): (VCC = 12V, TA = +25°C unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
f = 10kHz, Vi = 10mV
33
37
41
dB
RL = 30Ω/39kΩ
28
35
45
mV/kHz
V19
RL = 30kΩ/39kΩ
5.3
6.6
7.3
V
∆fv
V18 = 2V
0.85
1.1
–
MHz
V18 = 3V
–
AGC Circuit
RF AGC Voltage Gain
GV
AFC Circuit
Phase Detector Sensitivity
AFC Center Voltage
VCO Circuit
Maximum Variable Range
β
Control Sensitivity
2.9
–1.6 –1.3
3.3
3.7
MHz
mV/kHz
APC Circuit
APC Pull–In Range
fAPC
APC Filter SW is set to OFF
+0.8 +1.0 +1.5
MHz
–2.5 –2.0 –1.7
MHz
Serial Characteristics
Circuit Current
I9
45
54
68
mA
I15
7
9
12
mA
Pin Connection Diagram
IF AGC Filter 1
RF AGC Delay Adjust 2
RF AGC Output 3
Input Bias 4
IF Input 5
22
21
20
19
18
6
7
8
9
10
11
17
16
15
14
13
12
IF Input
Input Bias
GND
VCC
Video Output
Video Input
22
Lock Detect Filter
AFC Coil
AFC Coil
AFC Output
APC Filter
APC Filter Switch
GND (VCO)
VCO Coil
VCO Coil
VCO Coil
Detector Output
12
.338
(8.6)
1
11
1.050 (26.67)
.185
(4.7)
.100 (2.54)
1.000 (25.4)
.129 (3.3)