Datasheet > CA3256

CA3256

更新时间： 2024-09-28 06:46:03

品牌	Logo	应用领域
哈里斯 - HARRIS		开关放大器
页数	文件大小	规格书
11页	393K
描述
25MHz, BiMOS Analog Video Switch and Amplifier

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CA3256 数据手册

Semiconductor

CA3256

25MHz, BiMOS Analog

Video Switch and Ampliﬁer

January 1999

Features

Description

[ /Title

(CA32

56)

/Sub-

ject

(25MH

BiMO

S Ana-

log

Video

Switch

and

Ampli-

ﬁer)

/Autho

r ()

/Key-

words

(Har-

ris

• 5 Multiplex Video Channels

- 1 Independent Channel

- 4 Channels with Enable

The CA3256 BiMOS analog video switch has ﬁve channels

of CMOS multiplex switching for general-purpose video-

signal control. One of four CMOS channels may be selected

in parallel with channel 5. The CMOS switches are inputs to

the video ampliﬁer but may be used in bilateral switching

between channels 1 to 4 and channel 5. The analog

switches of channels 1 to 4 are digitally controlled with logic

level conversion and binary decoding to select 1 of 4

channels. The enable function controls channels 1 to 4 but

does not affect channel 5. LED output drivers are selected

with the channel 1-to-4 switch selection to indicate the ON-

channel. Channel 5 may be used as a monitor output for

data or signal information on channels 1 to 4. The

transmission gate switches shown in the block diagram of

the CA3256 are conﬁgured in a “T” design to minimize

feedthrough. When the switch is off, the shunt or center of

the “T” is grounded.

• 4 LED Channel Indicator Outputs

• Wideband Video Ampliﬁer . . . . . . . .25MHz Unity Gain

• Adjustable Video Ampliﬁer Gain

• High Signal-Drive Capability

Applications

• Video Multiplex Switch

• 75Ω Video Ampliﬁer/Line Driver

• Video Signal-Level Control

• Monitor Switching Control

• TV/CATV Audio/Video Switch

• Video Signal Adder/Fader Control

The ampliﬁer has high input impedance to minimize the R

transmission gate insertion loss. The ampliﬁer output imped-

ance is typically 5Ω in a complementary symmetry output.

The ampliﬁer can directly drive a nominal 75Ω coaxial cable

to provide line-to-line video switching. The gain of the ampli-

ﬁer is programmable by different feedback resistor values

between pins 8 and 9. Compensation may also be used

between these pins for an optimally ﬂat frequency response.

An internal regulated 5V bias reference with temperature

compensation permits stable direct-coupled output drive and

minimizes DC offset during signal switching.

Part Number Information

TEMP.

PKG.

NO.

PART NUMBER RANGE ( C)

PACKAGE

18 Ld PDIP

20 Ld SOIC

CA3256E

CA3256M

-40 to 85

E18.3

M20.3

Semi-

con-

ductor,

4x1,

Pinouts

video

cross-

point

switch,

multi-

plexer

multi-

plexor,

cable

driver,

5x1,

CA3256

(PDIP)

CA3256

(SOIC)

TOP VIEW

IN 3

LED 4

IN 4

18 CONTROL B

CONTROL B

IN2

IN3

LED4

IN 2

IN4

16 CONTROL A

15 IN 1

18 CONTROL A

17 NC

GND

V-

16 IN1

V-

14 V+

ENABLE

CONTROL C

FEEDBACK

AMP OUT

V+

ENABLE

13 IN/OUT 5

12 LED 1

11 LED 2

10 LED 3

14 IN/OUT5

13 NC

CONTROL C

FEEDBACK

AMP OUT

moni

tor out-

put,

adjust-

able

LED1

LED3 10

11 LED2

gain,

CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.

File Number 1769.5

8-1

12 3 4 5 6 7...11

中文翻译

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与CA3256相关器件

型号	品牌	获取价格	描述	数据表
CA3256E	HARRIS	获取价格	25MHz, BiMOS Analog Video Switch and Amplifier
CA3256E	INTERSIL	获取价格	25MHz, BiMOS Analog Video Switch and Amplifier
CA3256M	INTERSIL	获取价格	25MHz, BiMOS Analog Video Switch and Amplifier
CA3256M	HARRIS	获取价格	25MHz, BiMOS Analog Video Switch and Amplifier
CA3256M96	ETC	获取价格	Single Video Amplifier
CA3257E	ETC	获取价格	Consumer IC
CA3258E	ETC	获取价格	Consumer IC
CA3260	INTERSIL	获取价格	4MHz, BiMOS Operational Amplifier with MOSFET Input/CMOS Output
CA3260_06	INTERSIL	获取价格	4MHz, BiMOS Operational Amplifier with MOSFET Input/CMOS Output
CA3260A	INTERSIL	获取价格	4MHz, BiMOS Operational Amplifier with MOSFET Input/CMOS Output

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