1861

NTE1861
Integrated Circuit
TV Video IF Processor
Features:
D PLL True Synchronous Detector Incorporates VCO
D Quadrature Sound FM Detector
D AGC Defeat Terminal (Pin 20)
Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)
Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13.8V
Circuit Voltage
V5−1,14,21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V4,12−1,14,21 to 0V
V6−1,14,21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V4,12−1,14,21 to 0V
V7−1, 14,21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V4,12−1,14,21 to 0V
V10−1,14,21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V4,12−1,14,21 to 0V
V18−1,14,21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V4,12−1,14,21 to 0V
V25−1,14,21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.0V to 0V
Circuit Current
I17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −7mA to +0.5mA
I19 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −7mA to +0.5mA
I26 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −5mA to +0.5mA
Power Dissipation (TA = +70°C), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1300mW
Operating Ambient Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −20° to +70°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −55° to +150°C
Electrical Characteristics: (TA = +25°C unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
f = 58.75MHz, Vi = 80dBµ, m = 87.5%
1.8
2.1
2.4
Vp−p
VO = −3dB
49
53
57
dBµ
103
108
−
dBµ
IF Amplifier w Detection w AGC w AFC Circuit
Video Detector Output
Input Sensitivity
Max. Allowable Input
VO
S(IN)
VI(max)
Differential Gain
DG
f = 58.75MHz, Vi = 80dBµ, m 87.5%
−
2
6
%
Differential Phase
DP
f = 58.75MHz, Vi = 80dBµ, m = 87.5%
−
2
5
deg
Vo = −3dB
4.5
5
6
MHz
GRFAGC f = 10kHz, Vi = 10mV
40
44
48
dB
Frequency Characteristics
RF AGC Gain
AFC Phase Det. Sensitivity
AFC Center Voltage
VCO APC Circuit
fc
m
RL = 68Ω/82kΩ
30
40
60
mV/kHz
V10
RL = 68kΩ/82kΩ
4.2
6.5
8.2
V
Parameter
VCO Max. Variable Range
VCO Control Sensitivity
APC Pull−In Range
Symbol
Test Conditions
Min
Typ
Max
Unit
∆fV(1)
V13 = 2V
+0.85 +1.5
+2.5
MHz
∆fV(2)
V13 = 3V
−4.0
−2.4
−1.4
MHz
3
4.5
6
kHz/mV
b
fAPC(1)
+0.85 +1.5
+2.5
MHz
fAPC(2)
−3.5
−2.5
−1.6
MHz
400
500
600
mVrms
−
36
40
dBµ
50
70
90
mA
SIF Circuit
Total Detector Output
VO
Input Limiting Voltage
Vi(lim)
fo = 4.5MHz, fm = 400Hz, ∆f = ±25kHz,
Vi = 100Vms
fo = 4.5MHz, fm = 400Hz
DC Characteristics
Circuit Current
I4+I12
Pin Connection Diagram
GND
1
28 SIF Coil
IF Input
2
27 SIF Coil
IF Input
3
26 Sound Output
VCC
4
25 Sound Output Level
IF AGC Filter
5
24 SIF Input Bias
RF AGC Delay Adjust
6
23 SIF Input
RF AGC Output
7
22 SIF Input Bias
Lock Det Filter
8
21 GND
AFC Coil
9
20 AGC Defeat
Adjust
AFC Output 10
19 Video Output
APC Filter Switch 11
18 Video Input
12
17 Det Output
VCC (VCO)
APC Filter 13
16 VCO Coil
GND (VCO) 14
15 VCO Coil
28
15
1
14
.338
(8.6)
1.070 (27.17)
Max
.194
(4.95)
.070 (1.78)
.910 (23.11)
.122
(3.1)
Min
.400
(10.16)