NTE NTE1469

NTE1469
Integrated Circuit
Video IF & AFT
Functions:
D PIF Amplifier
D Video Detector
D AFS with Defeat
D Noise Canceller
D Forward AGC
Features:
D SAW Filter Connectable Without Preamp
D Input Sensitivity: Vin = 50μVrms Typ.
D Output Peak−to−Peak Voltage at Video Detector Adjustable Externally.
D High S/N under Weak−Input Signal
Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)
Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15V
Input Voltage, Vin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Vp−p
Power Dissipation (TA = +75°C), PT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 625mW
Operating Temperature, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −20° to +75°C
Storage Temperature, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −40° to +125°C
Electrical Characteristics: (VCC −12V, TA = 25°C, unless otherwise specified)
Item
Symbol
Test Conditions
Min
Typ
Max
Pin 21
21.0
27.0
34.5
Pin 9
22.0
25.5
28.4
Unit
Supply Current
ICC
No signal input
Input Sensitivity
Vin
Vout = 1.35VP−P (Pin 24)
25
50
100
AFC Output Voltage at No
Signal Input
V16
VC(AFC) = 0, V15 = 1V
5.4
6.5
7.7
Vin(AFC) = 0, V15 = 0
−
4.5
−
Signal−to−noise Ratio
S/N
Vin = 3mVrms (no demodulation)
S/N = 20log Vout/Vn (Pin 2)
−
53
−
V
−
12
−
mVrms
4.5
5.8
7.0
V
Pin 2
3.9
4.1
4.3
Pin 24
7.35
7.7
8.05
−10
0
+10
mV
−
−
2.5
V
Max. Input Voltage
Vin max V13−14 = 80mVrms, DG = 1dB
Output Carrier−Zero DC Voltage
VW
Vin = 0, V22 = 1.8V
Sync Tip Voltage
Vp
Vin
i = 3mVrms, m = 75%
Differential Voltage between
Pin 14 and Pin 13
V14,13
Max, Video Output Voltage
V2M
Video Frequency Response
Supply Voltage for IF Block
fB
V9
Input Voltage: 80μVrms ∼ 16mVrms C.W.
DC Voltage between Pin 14 and Pin 13
Measure V14,13
Voltage between Pin 14 and Pin 13:
300mVrms C.W. V22 = 1.8V,
Measure DC Voltage at Pin 2
Vin: modulation of video
sweep. 3mV
3 Vrms
Standardizing the output
voltage at 100kHZ Pin 2
2MHZ
−
0
−
4MHZ
−
0
−
6MHZ
−
+1.5
−
VCC = 12V, R3 = 180Ω,
DC
C voltage
g at Pin 9
connecting VCC through
180Ω
Vin = 0
6.4
7.4
7.9
Vin = 3mVrms
5.8
6.4
7.0
mA
μVrms
V
V
dB
V
Small Signal Video Amp. Gain
AAC
Input Signal at Pin 3: 10kHZ,
0.1VP−P plus 4.5V bias,
Measure AC gain to Pin 24
−1.5
−0.7
0
dB
Video Amp. DC Transfer Ratio
ADC
Input Voltage at Pin 3: 4V
DC Voltage at Pin 24
7.25
7.6
7.95
V
Bv
Input Signal at Pin 3: 0 ∼ 20MHZ
Sweep: 0.1VP−P + 4.5V, Frequency
when voltage at Pin 24 goes down 3dB
8
−
−
MHZ
Noise Canceller Threshold
Voltage
VNS1
Input Signal Waveform 1 is applied to
Pin 3. VNS means VN at Pin 3 when the
pulse peak at Pin 24 begins to rise up
0.3
0.5
0.7
V
Noise Canceller Clamp Voltage
VNC
Input Signal Waveform 1 is applied to
Pin 3. VNC at Output Signal Waveforn 1
of Pin 24 when VN = 1V
0.45
0.7
0.95
V
AFC Detector Sensitivity
μAFC
fo = 58.75MHZ, Vin(AFC) = 14mVrms,
VCC = 12V, ΔV = 10V (1 ∼ 11V)
−
−
200
kHZ
10V
Video Amp. Bandwidth
Electrical Characteristics (Cont’d): (VCC −12V, TA = +25°C, unless otherwise specified)
Item
Symbol
CO
AFC
Output Voltage
for Deviation of Input Frequency
Test Conditions
VCC = 12V,
12V
fo = 58.75MHZ,
Vin(AFC) = 5mVrms
VAFC
Min
Typ
Max
fo + 2.0MHZ
2.0
−
−
fo + 1.5MHZ
1.0
−
−
fo + 0.7MHZ
−
−
1.0
fo ± 0MHZ
−
6.0
−
fo − 0.7MHZ
11.0
−
−
fo − 1.5MHZ
−
−
11.0
fo − 2.0MHZ
−
−
10.0
−
6.0
−
dB
Cin
30
40
50
pF
Rin
70
100
140
Ω
Noise Figure
FI
Voltage at Pin 12 is fixed, Vin = 3mVrms
IF Input Impedance
Zin
i
Either Pin 6 or Pin 7 is
grounded, Pin 12: 8.0V
Pin Connection Diagram
Bypass
1
24
Video Output
Sound/Video Output
2
23
AGC Filter
Noise Cancel Input
3
22
Filter
Video Detector Adjust
4
21
VCC (1)
Bypass
5
20
AFC Adjust
IF Input
6
19
Sync Detector Adjust
IF Input
7
18
Sync Detector Adjust
Bypass
8
17
AFC Adjust
VCC (2)
9
16
AFC Output
RF AGC Output 10
15
VCC (3)
GND 11
14
Sound Trap
AGC Delay Adjust 12
13
Sound Trap
Unit
V
24
13
1
12
.520
(13.2)
1.300 (33.02)
Max
.225
(5.73)
Max
.100 (2.54)
1.100 (27.94)
.126
(3.22)
Min
.600
(15.24)