Motorola MC13280AYP, MC13281AP, MC13281BP Datasheet
Order this document by MC13280A Y/D
The MC13280A Y and MC13281A/B are three channel wideband amplifiers
designed for use as a video pre–amplifier in high resolution RGB color
monitors.
Features:
• 4.0 Vpp Output Swing
• 3.5 ns Rise/Fall Time, 100 MHz Bandwidth (MC13281A/B)
• 4.3 ns Rise/Fall Time, 80 MHz Bandwidth (MC13280AY)
• Subcontrast Controls for Each Channel
• Main Contrast Control
• Blanking and Clamping Inputs
• Packages: NDIP–24 and NDIP–20
• A Single PC Board Pattern Can Accept the MC13281A and the
MC13282A (Video Amplifier with OSD)
ORDERING INFORMATION
Operating
Device
MC13280A YP Plastic DIP
MC13281AP
MC13281BP Plastic DIP
ABSOLUTE MAXIMUM RATINGS
Rating
Power Supply Voltage V
Voltage at Video Amplifier Inputs 2, 4, 6 –0.5, +5.0 Vdc
Collector–Emitter Current (Three Channels) Video V
Storage Temperature – –65 to +150 °C
Junction Temperature – 150 °C
NOTES: 1.Devices should not be operated at these limits. Refer to “Recommended
Operating Conditions” section for actual device operation.
2.ESD data available upon request.
Temperature Range
TA = 0° to +70°C
Video V
Package
Plastic DIP
Pin Value Unit
CC
CC
CC
–0.5, 10
–0.5, 10
120 mA
Vdc
80/100 MHz VIDEO
PROCESSOR
24
1
20
1
PIN CONNECTIONS
R Subcontrast
G Subcontrast
B Subcontrast
R Subcontrast
G Subcontrast
B Subcontrast
Contrast
124
R Input
2
3
G Input
4
5
B Input
6
Gnd
7
8
N/C
V
9
CC
10
N/C
11
N/C
12
N/C
(Top View)
120
R Input
2
3
4
G Input
5
6
B Input
7
Gnd
8
V
CC
9
10Fast Commutate
(Top View)
P SUFFIX
PLASTIC PACKAGE
CASE 724
P SUFFIX
PLASTIC PACKAGE
CASE 738
Blank
23
Clamp
22
R Emitter
R Clamp
21
V5
20
G Emitter
19
G Clamp
18
MC13281A
Video V
17
16
15
14
13
19
18
17
16
15
MC13281B
14
MC13280AY
13
12
11
CC
B Clamp
B Emitter
Fast Commutate
Contrast
Blank
Clamp
R Emitter
R Clamp
V5
G Emitter
G Clamp
Video V
CC
B Clamp
B Emitter
This document contains information on a new product. Specifications and information herein
are subject to change without notice.
MOTOROLA ANALOG IC DEVICE DATA
Motorola, Inc. 1996 Rev 0
1
MC13280AY MC13281A/B
V1, V3, V5
V
Emitt
RECOMMENDED OPERATING CONDITIONS
Characteristic Pin Min Typ Max Unit
Power Supply Voltage VCC,
Contrast Control Contrast 0 – 5.0 Vdc
Subcontrast Control 1, 3, 5 0 – 5.0 Vdc
Blanking Input Signal Amplitude Blank 0 – 5.0 V
Clamping Input Signal Amplitude Clamp 0 – 5.0 V
Video Signal Amplitude
(with 75 Ω Termination)
Collector–Emitter Current (Total for Three
Channels)
Clamp Pulse Width Clamp 500 – – ns
Operating Ambient Temperature – 0 – 70 °C
Video V
2, 4, 6 – 0.7 1.0 Vpp
Video V
7.6 8.0 8.4 Vdc
CC
CC
0 – 50 mA
ELECTRICAL CHARACTERISTICS (Refer to Test Circuit Figure 1, T
Characteristic Condition Pin Min Typ Max Unit
Input Impedance
Internal DC Bias Voltage
Output Signal Amplitude
Voltage Gain
Contrast Control Contrast = 5.0 to 0 V
Subcontrast Control V1, V3, V5 = 5.0 to 0 V
Emitter DC Level – – 1.0 1.2 1.4 Vdc
Blanking Input Threshold – Blank – 1.25 – V
Clamping Input Threshold – Clamp – 3.75 – V
Video Rise Time
MC13280A Y
MC13281A/B
Video Fall Time
MC13280A Y
MC13281A/B
Video Bandwidth
MC13280A Y
MC13281A/B
Power Supply Current VCC, Video VCC = 8.0 V – – 70 – mA
NOTE: It is recommended to use a double sided PCB layout for high frequency measurement (e.g., rise/fall time, bandwidth).
V2, V4, V6 = 0.7 Vpp
V1, V3, V5 = 5.0 V
V2, V4, V6 = 0.7 Vpp
RL > 300 Ω, CL < 5.0 pF
V2, V4, V6 = 0.7 Vpp
RL > 300 Ω, CL < 5.0 pF
V2, V4, V6 = 0.7 Vpp
V1, V3, V5, Contrast = 5.0 V
RL > 300 Ω, CL < 5.0 pF
– 2, 4, 6
= 4.0 Vpp
out
= 4.0 Vpp
out
= 5.0
Contrast = 5.0 V
Contrast = 5.0 V
V
V
= 25°C, VCC = 8.0 Vdc.)
A
100 – – kΩ
– 2.4 – Vdc
R, G, B
ers
Contrast – –26 – dB
1, 3, 5 – –26 – dB
R, G, B
Emitters
R, G, B
Emitters –
R, G, B
Emitters –
3.6 4.0 – Vpp
– 5.6 – V/V
–
–
–
–
4.3
3.5
4.3
3.5
80
100
–
–
–
–
–
–
ns
ns
MHz
2
MOTOROLA ANALOG IC DEVICE DATA
MC13280AY MC13281A/B
Figure 1. Internal Block Diagram
Fast Commutate
R Input
R Subcontrast
Contrast
G Input
V
ref1
Contrast and Subcontrast
Control Processor
V
ref1
R Channel
V
V
ref2
ref2
R Clamp
Video V
CC
R Emitter
G Clamp
G Emitter
G Subcontrast
B Input
B Subcontrast
Contrast and Subcontrast
Control Processor
V
ref1
Contrast and Subcontrast
Control Processor
This device contains 272 active transistors.
Clamp Blank
Decoder
G Channel
B Channel
V
ref2
Blank
Clamp
B Clamp
B Emitter
V
CC
V5
Gnd
MOTOROLA ANALOG IC DEVICE DATA
3
MC13280AY
5.0 V
R
330
Contrast
The dc current through the output
MC13281B
Pin
1 1 R
3 3 G
5 5 B
2 2 R Input
4 4 G Input
6 6 B Input
MC13281A
Pin
MC13280AY MC13281A/B
PIN FUNCTION DESCRIPTION
Name Equivalent Internal Circuit Description
Subcontrast
Control
Subcontrast
Control
Subcontrast
Control
75
0.1
5.0 V
Ω
Clamp
V
CC
V
5.0 V
50 k
ref
1.0 k10 k
These pins provides a maximum of
26 dB attenuation to vary the gain of
each video amplifier separately.
Input voltage is from 0 to 5.0 V .
Increasing the voltage will increase
the contrast level.
The input coupling capacitor is used
for input clamping storage. The
maximum source impedance is 100 Ω.
Input polarity of the video signal is
positive.
Nominal 0.7 Vpp input signal is
recommended (maximum 1.0 Vpp).
7 7 Ground Ground pin. Connect to a clean, solid
N/A 8 N/C
10 N/C
11 N/C
12 N/C
8 9 V
9 13 Contrast
10 14 Fast
11 15 B Emitter
15 19 G Emitter
18 22 R Emitter
CC
Commutate
Output
Output
Output
5.0 V
Video
Signal
42 k
2.5 V
2.0 k
V
CC
=
E
Typical
ground.
Connected to ground.
Connect to 8.0 Vdc supply, ±5%.
Decoupling is required at this pin.
Overall Contrast Control for the three
channels.
The input range is 0 V to 5.0 V. An
increase of voltage increases the
contrast.
Must be connected to ground.
The video outputs are configured as
emitter–followers with a driving
capability of about 15 mA each.
The dc voltage at these three emitters
is set to 1.2 V (black level).
The dc current through the output
stage is determined by the emitter
resistors (typically 330 Ω).
4
MOTOROLA ANALOG IC DEVICE DATA
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