Circuit Interface. NTE1835 Datasheet

NTE1835 Interface. Datasheet pdf. Equivalent

Part NTE1835
Description Integrated Circuit Interface
Feature NTE1835 Integrated Circuit Interface for Character and Pattern Description: The NTE1835 is an integr.
Manufacture NTE
Datasheet
Download NTE1835 Datasheet




NTE1835
NTE1835
Integrated Circuit
Interface for Character and Pattern
Description:
The NTE1835 is an integrated circuit designed for interface of decoder outputs or of external analog
input signal in teletext system with the color output.
Features:
D Provides Analog Signal Processing for Character Signal Input
D High Speed Switching:
Rise and Fall Time: 35ns
Delay time: 20ns
D Including DC Controller of Brightness, Contrast, R–Adjustment and B–Adjustment for Character
Signal Input
D Y Amplifier Linear Area’s Bottom: 2.0V
Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)
Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14.4V
Circuit Voltage
V1–13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0/14.4V
V3,6,7,8,9–13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0/V1–13–1V
V11–13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2/(V1–13)–1
V15,18,21–13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0/(V1–13)V
Circuit Current
I10, 14, 17, 20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –30/10mA
I16,19,22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –1/3mA
Power Dissipation (TA = +70°C), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1040mW
Ambient Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20° to +70°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +150°C
Electrical Characteristics: (TA = +25°C, VCC = 12V unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Total Circuit Current
Circuit Voltage
Itot
V10,14,
17,20–13
V16,19,
22–13
VCC = 12V
VCC = 12V
32 47 62 mA
7.7 8.0 8.3 V
3.0 3.5 4.0 V



NTE1835
Electrical Characteristics (Cont’d): (TA = +25°C, VCC = 12V unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
TV Signal Voltage Amp.
Relative Voltage Amp AV1
TV Signal Frequency Characteristics
AV1
AV1
fV
f = 500kHz, Sine Wave signal 1Vpp
f = 500kHz, Sine Wave signal 1Vpp
Sine wave signal 1Vpp,
Frequency in which AV1
becomes 3dB
0.95
0.95
20
0.98
1.00
1.00 times
1.05 times
MHz
Character Signal Voltage Amp
AV2 Relative Voltage Amp.
AV2
AV2
Character Input 1Vpp, Contrast max.
Character Input 1Vpp,
Relative output voltage
3.0
0.85
3.4
1.00
3.8
1.15
times
times
Character Signal Contrast Ratio
Character Signal Rise/Fall Time
Character Signal Rise Delay Time
Character Signal Fall Delay Time
Character Signal tdr, tdf 3channel
Mutual Difference
eo
tr(TX),
tf(TX)
tdr(TX)
tdf(TX)
td(TX)
Contrast max./min.
V3 = V9 = 6V
V3 = V9 = 6V
V3 = V9 = 6V
V3 = V9 = 6V
3.0 3.5 4.0 times
35 60 ns
25 60 ns
30 60 ns
– – 20 ns
TXTV Changeover Rise Delay Time
TXTV Changeover Fall Delay Time
TXTV Changeover tdr, tdf
Mutal Difference
tdr(TX/TV) V3 = V9 = 6V
tdf(TX/TV) V3 = V9 = 6V
td(TX/TV) V3 = V9 = 6V
60 80 ns
50 70 ns
– – 20 ns
TXTV Discrimination Level
Crosstalk between TV
Signal Channels
Vt(TX/TV)
CTTV
0.50 0.65 0.70 V
40 45 dB
Crosstalk between Character
Signal Channels
CTTX
40 45 dB
TVtoCharacter Changeover
Crosstalk
CTTX/TV
40 45 dB
Pedestal Deflection of Character
Signal Contrast Change
ETPC Brightness typ., Contrast Min to Max
0 ±150 mV
TV Signal Input DC Level Standard
TV1 TV input signal level (RY) TV,
(GY) TV, (BY) TV, YTV
2.0 10.5 V
TXTV Signal Input Level Standard TX/TV1
0 6.0 V







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