Datasheet EL4348CU, EL4344CU Datasheet (ELANT)

EL4344C/EL4348C - Preliminary

600MHz Multiplexing Amplifiers

EL4344C/EL4348C - Preliminary

Features

• 4:1 Mux

• Triple channels

• ±5V operation

• Gain of 1 (EL4344C)

• Gain of 2 (EL4348C)

• 600MHz bandwidth

• Supply current of 11mA/channel

Applications

• HDTV/DTV Analog Inputs

• Video Projectors

• Computer Monitors

• Set Top Boxes

• Security Video

• Broadcast Video Equipment

Ordering Information

Part No. Package Tape & Reel Outline #

EL4344CU 28-Pin QSOP MDP0040
EL4348CU 28-Pin QSOP MDP0040

General Description

The EL4344C and EL4348C are 600MHz bandwidth multiplexing
amplifiers designed primarily for input video switching. The
EL4344C and EL4348C contain 4:1 multiplexing amplifiers.

The EN pin can be used to tri-state the MUX output, enabling parts to
be paralleded for a greater number of inputs. All logic inputs are refer­enced to the GND pin.

The EL4344C has a gain of 1 and the EL4348C has a gain of 2.
The EL4344C and the EL4348C are available in a 28-pin QSOP pack-

age and are specified for operation over the full ---40°C to +85°C
temperature range.

Connection Diagram

1

S0 IN3A

2

IN4A

3

S1

4

IN1B

5

GND

GND

IN2A

GND

IN1A

28

27

26

25

24

6

IN2B

7

VS+

8

IN3B

9

VS-

10

IN4B

11

GND

12

IN1C

13

EN

IN2C

EL4344C & EL4348C

(28-Pin QSOP)

Note: All information contained in this data sheet has been carefully checked and is believed to be accurate as of the date of publication; however, this data sheet cannot be a “controlled document”. Current revisions, if any, to these
specifications are maintained at the factory and are available upon your request. We recommend checking the revision level before finalization of your design documentation.

© 2001 Elantec Semiconductor, Inc.

VS+

OUTA

OUTB

OUTC

VS-

IN4C

GND

IN3C

GND

23

22

21

20

19

18

17

16

1514

August 13, 2001

EL4344C/EL4348C - Preliminary

600MHz Multiplexing Amplifiers

Absolute Maximum Ratings (T

Values beyond absolute maximum ratings can cause the device to be pre­maturely damaged. Absolute maximum ratings are stress ratings only
and functional device operation is not implied.

Supply Voltage (VS+ to VS-) 11V
Input Voltage VS- - 0.3V, VS+ +0.3V

Important Note:
All parameters having Min/Max specifications are guaranteed. Typ values are for information purposes only. Unless otherwise noted, all tests are at the

specified temperature and are pulsed tests, therefore: TJ = TC = TA.

EL4344C/EL4348C - Preliminary

Specifications

VS = +5V, VS- = -5V, GND = 0V, TA = 25°C, Input Video = 1V

Parameter Description Conditions Min Typ Max Unit

General

I

S

BW -3dB Bandwidth AV = 1 (EL4344C) 600 MHz

FBW 0.1dB Bandwidth AV = 1 (EL4344C) 100 MHz

SR Slew Rate 25% to 75%, RL = 150Ω, AV = 2 (EL4344C) 1200 V/µs

t

SW

V

OP

V

ON

I

OUT

dG Differential Gain Error Standard NTSC test, AV = 2, RL = 150Ω 0.07 %
dP Differential Phase Error Standard NTSC test, AV = 2, RL = 150Ω 0.01 °
V

IN

V

OS

e

n

THD Total Harmonic Distortion V
t

S

OS Overshoot Step = 2V 0.1 0.6 V
PSRR Power Supply Rejection Ratio 50 dB
ISO Channel Isolation F = 30MHz 90 dB
V

GLITCH

I

SDIS

A

V

Control

V

H

V

L

Supply Current (per channel) No load, VIN = 0V 16 18 mA

Switching Time 10% to 90% 2 ns
Positive Output Swing 3.3 3.5 V
Negative Output Swing -3.2 -3.5 V
Output Current RL = 10Ω to GND 80 100 mA

Input Voltage (video inputs) -2.8 2.3 V
Offset Voltage -10 10 mV
Voltage Noise 17 nV/√Hz

0.1% Settling Time Step = 2V 6 ns

Switching Glitch 70 120 mV
Disable Supply Current 20 µA
Voltage Gain EL4344C 1

Logic Input High Voltage 2.0 V
Logic Input Low Voltage 0.8 V

= 25°C)

A

Storage Temperature Range -65°C to +150°C
Ambient Operating Temperature -40°C to +85°C
Operating Junction Temperature 125°C
Power Dissipation See Curves

& RL = 150Ω to GND, unless otherwise specified.

P-P

AV = 2 (EL4348C) 500 MHz

AV = 2 (EL4348C) 80 MHz

25% to 75%, RL = 150Ω, AV = 2 (EL4348C) 1400 V/µs

= 2V

OUT

EL4348C 2

, RL = 150Ω, f = 200MHz -70 dB

P-P

2

Block Diagram

EL4344C/EL4348C - Preliminary

EL4344C/EL4348C - Preliminary

600MHz Multiplexing Amplifiers

VS+

Input Video

Input Video

Input Video

Input Video

Three channels - A, B & C

Input Selector Truth Table

Inputs

EN S1 S0

1 0 0 IN1 Selected
1 0 1 IN2 Selected
1 1 0 IN3 Selected
1 1 1 IN4 Selected
0 X X Standby - Powered Down

IN1

IN2

IN3

IN4

S

0

S

1

GND VS-

EN

+

OUT

-

State

3

EL4344C/EL4348C - Preliminary

600MHz Multiplexing Amplifiers

Pin Descriptions

Pin Number Pin Name Pin Type Pin Description

1 S0 Logic Input LSB for input selection
2 IN4A High Frequency Signal Input #4 for channel A
3 S1 Logic Input MSB for input selection
4 IN1B High Frequency Signal Input #1 for channel B
5 GND Power Ground

EL4344C/EL4348C - Preliminary

6 IN2B High Frequency Signal Input #2 for channel B
7 VS+ Power Positive power
8 IN3B High Frequency Signal Input #3 for channel B

9 VS- Power Negative power
10 IN4B High Frequency Signal Input #4 for channel B
11 GND Power Ground
12 IN1C High Frequency Signal Input #1 for channel C
13 EN Logic Input Logic high to enable
14 IN2C High Frequency Signal Input #2 for channel C
15 GND Power Ground
16 IN3C High Frequency Signal Input #3 for channel C
17 GND Power Ground
18 IN4C High Frequency Signal Input #4 for channel C
19 VS- Power Negative power
20 OUTC High Frequency Signal Output for channel C
21 OUTB High Frequency Signal Output for channel B
22 OUTA High Frequency Signal Output for channel A
23 VS+ Power Positive power
24 IN1A High Frequency Signal Input #1 for channel A
25 GND Power Ground
26 IN2A High Frequency Signal Input #2 for channel A
27 GND Power Ground
28 IN3A High Frequency Signal Input #3 for channel A

4

EL4344C/EL4348C - Preliminary

600MHz Multiplexing Amplifiers

EL4344C/EL4348C - Preliminary

General Disclaimer

Specifications contained in this data sheet are in effect as of the publication date shown. Elantec, Inc. reserves the right to make changes in the cir­cuitry or specifications contained herein at any time without notice. Elantec, Inc. assumes no responsibility for the use of any circuits described
herein and makes no representations that they are free from patent infringement.

WARNING - Life Support Policy

Elantec, Inc. products are not authorized for and should not be used
within Life Support Systems without the specific written consent of
Elantec, Inc. Life Support systems are equipment intended to sup-

Elantec Semiconductor, Inc.

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Milpitas, CA 95035
Telephone: [phone]

(888) ELANTEC
Fax: [phone]
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port or sustain life and whose failure to perform when properly used
in accordance with instructions provided can be reasonably
expected to result in significant personal injury or death. Users con­templating application of Elantec, Inc. Products in Life Support
Systems are requested to contact Elantec, Inc. factory headquarters
to establish suitable terms & conditions for these applications. Elan­tec, Inc.’s warranty is limited to replacement of defective
components and does not cover injury to persons or property or
other consequential damages.

August 13, 2001

5

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