BELINEA Belinea 103052, Service Manual

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PROGRAMMABLE PRECISION REFERENCES
SILICON MONOLITHIC INTEGRATED CIRCUIT
• Programmable Output Voltage to 36V
• Voltage Reference Tolerance: ± 0.4% , Typ@ 25°C (TL431B)
• Low Dynamic Output Impedance, 0.22 Ω Typical
• Sink Current Capability of 1.0mA to 100mA
• Equivalent Full-Range Temperature coefficient of 50 ppm/°C Typical
• Temperature Compensated for Operation over full Rated Operating Temperature Range.
• Low Output Noise Voltage
SYMBOL FUNCTIONAL BLOCK DIAGRAM
INTERNAL SCHEMATIC
Component values are nominal
LP SUFFIX CASE 92
(TO-92)
LM431
LM2435
+
Anode (A)
Reference
(R)
Cathode
(k)
2.5Vref
Cathode
(K)
Anode
(A)
Reference
(R)
1. Reference
2. Anode
3. Cathode
Pin
1
2
3
Monolithic Triple 5.5 ns CRT Driver
General Description
The LM2435 is an integrated high voltage CRT driver circuit
designed for use in color monitor applications. The IC con-
tains three high input impedance, wide band amplifiers
which directly drive the RGB cathodes of a CRT. Each chan-
nel has its gain internally set to -14 and can drive CRT ca-
pacitive loads as well as resistive loads present in other ap-
plications, limited only by the package's power dissipation.
The IC is packaged in an industry standard 9-lead TO-220
molded plastic power package. See Thermal Considerations
section.
Features
¡
Dissipates approximately 45% less power than the
LM2405
¡
Well matched with LM1279 and LM1282/83 video
preamps
¡
0V to 5V input range
¡
Stable with 0 pF±20 pF capacitive loads and
peaking networks
¡
Convenient TO-220 staggered lead package style
¡
Standard LM243X Family Pinout which is designed
easy PCB layout
Applications
¡
1280 x 1024 Displays up to 75 Hz Refresh
¡
Pixel clock frequencies up to 135 MHz
¡
Monitors using video blanking
Schematic and Connection Diagrams
DS101044-1
FIGURE 1. Simplified Schematic Diagram
(One Channel)
DS101044-2
Note: Tab is at GND
Top View
Order Number LM2435T