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Part

NTE7138

Description

Integrated Circuit Advanced Monitor Video Controller for OSD



Feature


NTE7138 Integrated Circuit Advanced Moni tor Video Controller for OSD Descriptio n: The NTE7138 is an RGB pre–amplifie r in a 20–Lead DIP type package desig ned for color monitor systems with supe r VGA performance. It is intended for D C or AC coupling of the color signals t o the cathodes of a CRT. Features: D 85 MHz Video Controller D Fully DC Control lable D 3 Separate Vid.
Manufacture

NTE Electronics

Datasheet
Download NTE7138 Datasheet


NTE Electronics NTE7138

NTE7138; eo Channels D Input Black Level Clamping D White Level Adjustment for 2 Channel s Only D Brightness Control with Correc t Grey Scale Tracking D Contrast Contro l for All 3 Channels Simultaneously D C athode Feedback to Internal Reference f or Cut–Off Control, Which Allows Unst abilized Video Supply Voltage D Current Outputs for RGB Signal Currents D RGB Voltage Outputs to E.


NTE Electronics NTE7138

xternal Peaking Circuits D Blanking and Switch–Off Input for Screen Protectio n D Sync On Green Operation Possible D On Screen Display (OSD) Facility Absolu te Maximum Ratings: Supply Voltage (Pin 7), VP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to +8.8V Input Voltage Range (Pin2, Pin5, Pin8), Vi . . . . ..


NTE Electronics NTE7138

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.1 to VP External DC Voltage Ranges, Vext Pin 20, Pin17, Pin14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.1 to VP Pin12, Pin15, Pin18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.1.





Part

NTE7138

Description

Integrated Circuit Advanced Monitor Video Controller for OSD



Feature


NTE7138 Integrated Circuit Advanced Moni tor Video Controller for OSD Descriptio n: The NTE7138 is an RGB pre–amplifie r in a 20–Lead DIP type package desig ned for color monitor systems with supe r VGA performance. It is intended for D C or AC coupling of the color signals t o the cathodes of a CRT. Features: D 85 MHz Video Controller D Fully DC Control lable D 3 Separate Vid.
Manufacture

NTE Electronics

Datasheet
Download NTE7138 Datasheet




 NTE7138
NTE7138
Integrated Circuit
Advanced Monitor Video Controller for OSD
Description:
The NTE7138 is an RGB pre–amplifier in a 20–Lead DIP type package designed for color monitor
systems with super VGA performance. It is intended for DC or AC coupling of the color signals to the
cathodes of a CRT.
Features:
D 85MHz Video Controller
D Fully DC Controllable
D 3 Separate Video Channels
D Input Black Level Clamping
D White Level Adjustment for 2 Channels Only
D Brightness Control with Correct Grey Scale Tracking
D Contrast Control for All 3 Channels Simultaneously
D Cathode Feedback to Internal Reference for Cut–Off Control, Which Allows Unstabilized Video
Supply Voltage
D Current Outputs for RGB Signal Currents
D RGB Voltage Outputs to External Peaking Circuits
D Blanking and Switch–Off Input for Screen Protection
D Sync On Green Operation Possible
D On Screen Display (OSD) Facility
Absolute Maximum Ratings:
Supply Voltage (Pin7), VP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to +8.8V
Input Voltage Range (Pin2, Pin5, Pin8), Vi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.1 to VP
External DC Voltage Ranges, Vext
Pin20, Pin17, Pin14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.1 to VP
Pin12, Pin15, Pin18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.1 to +0.7V
Pin1, Pin3, Pin6, Pin11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.1 to VP
Pin9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.1 to VP+0.7V
Pin10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.1 to VP+0.7V
Average Output Current (Pin14, Pin17, Pin20, Note 1), Io(av) . . . . . . . . . . . . . . . . . . . . . . . 0 to 50mA
Peak Output Current (Pin14, Pin17, Pin20), IOM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to 100mA
Total Power Dissipation, Ptot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1200mW
Electrostatic Handling for All Pins (Note 2), Vesd . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±500V
Operating Junction Temperature Range, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –25° to +150°C
Operating Ambient Temperatrure Range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0° to +70°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –25° to +150°C
Thermal Resistance, Junction–to–Ambient (In Free Air), RthJA . . . . . . . . . . . . . . . . . . . . . . . . 65K/W
Note 1. Signal amplitude of 50mA black–to–white is possible if the average current (including blank-
ing times and signal variation against time) does not exceed 50mA. The maximum power
dissipation of 1200mW has to be considered.
Note 2. Equivalent to discharging a 200pF capacitor through a 0series resistor.




 NTE7138
Electrical Characteristics: (VP = 8V, TA = +25°C, Note 3, Note 4 unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Supply
Supply Voltage Range
Supply Current
Video Signal Inputs (Channels 1, 2 and 3)
VP
IP
7.2 8.0 8.8 V
36 48 60 mA
Input Voltage (BlacktoWhite)
DC Voltage During Input Clamping
(Artificial Black + VBE)
DC Input Current
Brightness Control (Note 5)
Vi(bw)
Vl(clamp)
II No Clamping, Vi = Vl(clamp),
TA = 20° to +70°C
During Clamping,
Vi = Vl(clamp) +0.7V
During Clamping,
Vi = Vl(clamp) 0.7V
0.7 1.0
2.8 3.1 3.4
V
V
0.05 +0.05 +0.25 µA
50 75 120 µA
120 75 50 µA
Input Voltage Range
Input Voltage for Nominal Brightness
Vi(BC)
Pin1 OpenCircuit
1.0 6.0
2.0 2.25 2.5
V
V
Input Resistance
Black Level Voltage Change at Voltage
Outputs Referred to Reference Black
Level During Output Clamping
(Vi(HBL) > 1.6V) Related to Output
Signal Amplitude with Nominal 0.7V(PP)
Input Signal and Nominal Contrast
(Vi(CC) = 4.3V) for Any Gain Setting
Difference of Vbl Between and Two
Channels
Ri(BC)
Vbl
Vi(BC) = 1.0V
Vi(BC) = 6.0V
Pin1 OpenCircuit
VBT
40 50 60 k
13 11 9.5 %
30 34 37 %
– – 0.8 %
1.2 0 +1.2 %
Contrast Control (Note 6)
Input Voltage Range
Maximum Input Voltage
Input Voltage Range for Nominal Contrast
Vi(CC)
Note 7
1.0 6.0 V
– – VP1 V
4.3
V
Input Voltage Range for Minimum Contrast
Pin3 and Pin11 OpenCircuit
0.7
V
Input Current
Contrast Relative to Nominal Contrast
Ii(CC)
C/Cnom
Vi(CC) = 4.3V
Vi(CC) = 6V, Pin3 and Pin11
OpenCircuit
5 1 0.1 µA
2.4 3.4 dB
Vi(CC) = 1V, Pin3 and Pin11
OpenCircuit
26 22 19 dB
Tracking of Output Signals of
Channels 1, 2 &3
Gtrack 1V < Vi(CC) < 6V, Note 8
0 0.5 dB
Delay Between Leading (Falling) Edges of
tdf(C) Vi(CC) = 4.3V to 0.7V, Input
7 20 ns
Contrast Voltage and Voltage Output
Fall Time at Pin6: tf(CC) = 2ns,
Waveforms
Note 9
Delay Between Trailing (Rising) Edges of
Contrast Voltage and Voltage Output
Waveforms
tdr(C)
Vi(CC) = 0.7V to 4.3V, Input
Rise Time at Pin6: tf(CC) = 2ns,
Note 9
15 25
ns
Fall Time of Voltage Output Waveform
tf(C) 90% to 10% Amplitude, Input
Fall Time at Pin6: tf(CC) = 2ns,
Note 9
6 15 ns
Rise Time of Voltage Output Waveform
tr(C) 10% to 90% Amplitude, Input
Rise Time at Pin6: tf(CC) = 2ns,
Note 9
6 15 ns




 NTE7138
Electrical Characteristics (Cont’d): (VP = 8V, TA = +25°C, Note 3, Note 4 unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Gain Control (Channel 1 and Channel 3, Note 10)
Input Voltage
Input Voltage for Nominal Gain
Vi(GC)
Pin3, Pin11 Open Circuit
1.0 6.0
3.6 3.75 3.95
V
V
Input Resistance
Gain Control Difference Relative to
Nominal Gain (Channels 1 and 3 Only)
Ri(GC)
G
Feedback Input (Channels 1, 2 and 3, Note 11)
Vi(CC) = 4.3V, Vi(GC) = 6V
Vi(CC) = 4.3V, Vi(GC) = 1V
44 55 66
2.0 2.6 3.3
5.5 5.0 4.5
k
dB
dB
Internal Reference Voltage
Maximum Output Current
BlackLevel Variation at CRT
Variation of Vref(int) in the Temperature
Range
Vref(int)
Io(FB)
Vbl(CRT)
Vref(T)
During Output Clamping,
Vi(FB) = 3V
Note 12
TA = 20° to +70°C
5.6 5.8 6.1
500 100 60
V
nA
0 40 200 mV
0 20 50 mV
Variation of Vref(int) with Supply Voltage
Voltage Outputs (Channels 1, 2 and 3)
Vref(int)(VP) 7.2V VP 8.8V
0 60 100 mV
Nominal Signal Output Voltage
(BlacktoWhite Value)
Maximum Adjustable BlackLevel Voltage
BlackLevel Voltage During SwitchOff,
Equal to Minimum Adjustable
BlackLevel Voltage
Vo(bw)
Vblx(max)
Vbl(SO)
Pin3 and Pin11 OpenCircuit,
Vi(CC) = 4.3V, Vi(bw) = 0.7V
During Output Clamping,
TA = 20° to +70°C
Vi(HBL) = VP, RO = 33,
TA = 20° to +70°C
0.69 0.79 0.89
1.0 1.2 1.4
30 45 100
V
V
mV
BlackLevel Voltage During Test Mode
SignaltoNoise Ratio
Vbl(TST)
S/N
Vi(HBL) = VP, Vi(CL) = VP,
Pin1 OpenCircuit,
Vi = Vi(clamp), Note 13
Note 14
0.3 0.7 1.2 V
50 44 dB
Output Thermal Distortion
BlaclLevel Variation Between
Clamping Pulses
dO(th)
Vbl(fl)
Io(bw) = 50mA, Note 15
Line frequency 30kHz
0.6 1.0 %
0.5 4.5 mV
Maximum Offset During Sync Clipping
Voffset(max) Vl < Vl(clamp), Note 16
0 7 15 mV
Variation of Nominal Output Signal
(BlacktoWhite Value) with
Temperature
Vo(bw)(T) Pin3 and Pin11 OpenCircuit,
Vi(CC) = 4.3V, Vi(bw) = 0.7V,
TA = 20° to +70°C
0
2.5 10
%
Current Outputs (Channels 1, 2 and 3, Note 17)
Output Current (BlacktoWhite Value)
Io(bw)
With Peaking
50 mA
– – 100 mA
Start of HFSaturation Voltage of
Output Transistors
V2019,
V1716,
V1413
Output Current During SwitchOff
Ibl(SO)
Frequency Response at Voltage Outputs (Note 18)
Io = 50mA
Io = 100mA
Vi(HBL) = VP, RO = 33
– – 2.0 V
– – 2.2 V
0 20 900 µA
Gain Decrease by Frequency Response
Rise Time at Voltage Output
G(f)
tr(O)
70MHz, Single Channel
10% to 90% Amplitude,
Input Rise Time = 1ns
1.3 3.0 dB
4.1 5.0 ns
Overshoot of Output Signal Pulse Related dVO Single Channel,
to Actual Output Pulse Amplitude
Input Rise Time = 2.5ns,
48%
Vi(bw) = 0.7V, Vi(CC) = 4.3V,
Pin3 and Pin11 OpenCircuit




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