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參數(shù)資料
| 型號(hào)： | CA3256 |
| 廠商： | Intersil Corporation |
| 英文描述： | 25MHz, BiMOS Analog Video Switch and Amplifier |
| 中文描述： | 高達(dá)25MHz，BiMOS模擬視頻開關(guān)和放大器 |
| 文件頁數(shù)： | 11/11頁 |
| 文件大?。?/td> | 389K |
| 代理商： | CA3256 |
8-11
Any combination of switch input circuits can be configured
with multiple, parallel, line-drive outputs. The video switch
amplifier circuit of Figure 8 illustrates how the CA3256 may
be configured in pairs to provide an 8-to-1 video switch
amplifier using a 3-bit address to select the input. It is also
possible to use the fifth channel input to tie signals to a
common bus line for distribution from the selected amplifier;
however, distributed capacitance loading will result in
reduced bandwidth. The 4 plus 1 combination of input-signal
switching provides for a wide assortment of video switch
circuit configurations.
While the BiMOS process does provide some compromises
for both the switch and the amplifier, the combined system is
capable of the performance needed in most high-quality,
switching applications. As an integrated system, many of the
problems in PC-board layout are simplified, and there is a
reduction in component count. In its simplest form, with
+12V and -5V supplies, the CA3256 may be DC connected
at the input and output; the LED indicators need not be
connected. Under these conditions, the circuit may be as
simple as the one in Figure 8.
Summary
While each video-switch amplifier is designed for a specific
application and, to that end, is tailored as far as performance
to a given set of specifications, the circuit-designer’s goal is
generally the same in every case: to make the best possible
switch for the lowest cost. In this respect, the CA3256 IC
switch and amplifier discussed provide an excellent choice
for a cost-effective high-performance video-switch amplifier,
by taking advantage of the complementary features of both
high-speed CMOS and bipolar integrated circuits.
A
B
C
V
IN1
V
IN2
V
IN3
V
IN4
V
OUT
CH
1-4
CH 5
+12V
-5V
V
IN5
V
IN6
V
IN7
V
IN8
CH
5-8
+12V
-5V
NC
V+
+
-
A
B
C
EN
1
V-
GND
1
2
3
4
5
CA3256
V+
+
-
A
B
C
EN
2
V-
GND
1
2
3
4
5
CA3256
FIGURE 8. AN 8-TO-1 VIDEO SWITCH AMPLIFIER USING TWO
CA3256 DEVICES
TRUTH TABLE
CH
C
A
B
1
0
0
0
2
0
0
1
3
0
1
0
4
0
1
1
5
1
0
0
6
1
0
1
7
1
1
0
8
1
1
1
CA3256
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| CA3256E | 25MHz, BiMOS Analog Video Switch and Amplifier |
| CA3256M | 25MHz, BiMOS Analog Video Switch and Amplifier |
| CA3260AEZ | 4MHz, BiMOS Operational Amplifier with MOSFET Input/CMOS Output |
| CA3260EZ | 4MHz, BiMOS Operational Amplifier with MOSFET Input/CMOS Output |
| CA3260 | 4MHz, BiMOS Operational Amplifier with MOSFET Input/CMOS Output |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CA3256 WAF | 制造商:Harris Corporation 功能描述: |
| CA3256E | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| CA3256M | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| CA3256M96 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Single Video Amplifier |
| CA3257E | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Consumer IC |
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