ad8133nbsp Analog Devices, Inc., ad8133nbsp Datasheet

ad8133nbsp

Manufacturer Part Number

ad8133nbsp

Description

Triple Differential Driver With Output Pull-down

Manufacturer

Analog Devices, Inc.

Datasheet

1.AD8133NBSP.pdf (16 pages)

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FEATURES

Triple high speed fully differential driver

Internal common-mode feedback network

Differential input and output

Differential-to-differential or single-ended-to-differential

Adjustable output common-mode voltage

Output pull-down feature for line isolation

Low distortion: 64 dB SFDR @ 10 MHz on 5 V supply,

Low offset: 4 mV typical output referred on 5 V supply

Low power: 26 mA @ 5 V for three drivers

Wide supply voltage range: +5 V to ±5 V

Available in space-saving packaging: 4 mm × 4 mm LFCSP

APPLICATIONS

KVM (keyboard-video-mouse) networking

UTP (unshielded twisted pair) driving

Differential signal multiplexing

GENERAL DESCRIPTION

The AD8133 is a major advancement beyond using discrete

op amps for driving differential RGB signals over twisted pair

cable. The AD8133 is a triple, low cost differential or single-

ended input to differential output driver, and each amplifier has

a fixed gain of 2 to compensate for the attenuation of line ter-

mination resistors. The AD8133 is specifically designed for RGB

signals but can be used for any type of analog signals or high speed

data transmission. The AD8133 is capable of driving either Cate-

gory 5 unshielded twisted pair (UTP) cable or differential printed

circuit board transmission lines with minimal signal degradation.

The outputs of the AD8133 can be set to a low voltage state to

be used with series diodes for line isolation, allowing easy dif-

ferential multiplexing over the same twisted pair cable. The

AD8133 driver can be used in conjunction with the AD8129

and AD8130 differential receivers.

Rev. 0

Information furnished by Analog Devices is believed to be accurate and reliable.

However, no responsibility is assumed by Analog Devices for its use, nor for any

infringements of patents or other rights of third parties that may result from its use.

Specifications subject to change without notice. No license is granted by implication

or otherwise under any patent or patent rights of Analog Devices. Trademarks and

registered trademarks are the property of their respective owners.

225 MHz −3 dB large signal bandwidth

Easily drives 1.4 V p-p video signal into source-terminated

1600 V/µs slew rate

Fixed internal gain of 2

Output balance error −60 dB @ 50 MHz

operation

L, dm

100 Ω UTP cable

= 200 Ω

Manufactured on Analog Devices’ next generation XFCB bipo-

lar process, the AD8133 has a large signal bandwidth of

225 MHz and a slew rate of 1600 V/µs. The AD8133 has an

internal common-mode feedback feature that provides output

amplitude and phase matching that is balanced to −60 dB at

50 MHz, suppressing harmonics and minimizing radiated elec-

tromagnetic interference (EMI).

The output common-mode level is easily adjustable by applying

a voltage to the V

to transmit signals on the output common-mode voltages.

The AD8133 is available in a 24-lead LFCSP package and can

operate over the temperature range of −40°C to +85°C.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Fax: 781.326.8703

–100

–10

–20

–30

–40

–50

–60

–70

–80

–90

–OUT A

+IN A

–IN A

FUNCTIONAL BLOCK DIAGRAM

∆V

OPD

Triple Differential Driver

OUT, dm

OUT, cm

S–

Figure 2. Output Balance vs. Frequency

OCM

With Output Pull-Down

/∆V

= 2V p-p

input pin. The V

OUT, dm

FREQUENCY (MHz)

Figure 1.

AD8133

OCM

input can also be used

= ±5V

100

www.analog.com

–IN C

+IN C

–OUT C

AD8133

OCM

S+

S–

= +5V

500

Related parts for ad8133nbsp

ad8133nbsp Summary of contents

Page 1

... The AD8133 is available in a 24-lead LFCSP package and can operate over the temperature range of −40°C to +85°C. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 Fax: 781.326.8703 © 2004 Analog Devices, Inc. All rights reserved. AD8133 ...

Page 2

AD8133 TABLE OF CONTENTS Specifications..................................................................................... 3 Absolute Maximum Ratings............................................................ 5 Thermal Resistance ...................................................................... 5 ESD Caution.................................................................................. 5 Pin Configuration and Function Descriptions............................. 6 Typical Performance Characteristics ............................................. 7 Theory of Operation ...................................................................... 12 Definition of Terms.................................................................... 12 Analyzing an Application ...

Page 3

SPECIFICATIONS V = ±5V 25° 200 Ω, unless otherwise noted OCM L dm Table 1. Parameter DIFFERENTIAL INPUT PERFORMANCE DYNAMIC PERFORMANCE −3 dB Small Signal Bandwidth −3 dB Large Signal ...

Page 4

AD8133 2 25° 200 Ω, unless otherwise noted OCM L, dm Table 2. Parameter DIFFERENTIAL INPUT PERFORMANCE DYNAMIC PERFORMANCE −3 dB Small Signal Bandwidth −3 dB Large Signal ...

Page 5

ABSOLUTE MAXIMUM RATINGS Table 3. Parameter Rating Supply Voltage 12 V All V ±V OCM Power Dissipation See Figure 3 Input Common-Mode Voltage ±V Storage Temperature −65°C to +125°C Operating Temperature Range −40°C to +85°C Lead Temperature Range 300°C (Soldering ...

Page 6

AD8133 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 5. Pin Function Descriptions Pin No. Mnemonic 1 OPD S− 3 − + −OUT A 7 +OUT A 8, 11, 17 ...

Page 7

TYPICAL PERFORMANCE CHARACTERISTICS Unless otherwise noted 200 Ω the definition of terms 200mV p-p OUT, dm – FREQUENCY (MHz) Figure 6. Small Signal Frequency Response at Various ...

Page 8

AD8133 –30 –40 –50 – 200Ω –70 –80 –90 –100 –110 –120 0.1 1 FREQUENCY (MHz) Figure 12. Second Harmonic Distortion at V 200 V = +5V S 100 V = ± –50 ...

Page 9

SINGLE-ENDED OUTPUT 1 0 –1 OUTPUT PULL-DOWN –2 –3 –4 100ns/DIV – Figure 18. Output Pull-Down Response 1000 100 10 10 100 1k 10k 100k 1M FREQUENCY (Hz) Figure 19. Output-Referred Voltage Noise vs. Frequency –30 ...

Page 10

AD8133 –40 AMPLIFIER 200mV p-p AMPLIFIER B IN, dm ∆V B/∆V A –50 OUT, dm IN, dm –60 –70 –80 –90 –100 –110 1 10 FREQUENCY (MHz) Figure 24. Amplifier-to-Amplifier Isolation vs. Frequency –20 ∆V = ...

Page 11

± –0.5 –1.5 –2.5 –3.5 –4.5 100 1000 LOAD (Ω) Figure 30. Output Saturation Voltage vs. Single-Ended Output Load 4.0 3 ±5V S 3.0 2.5 2.0 ...

Page 12

AD8133 THEORY OF OPERATION Each differential driver in the AD8133 differs from a conven- tional op amp in that it has two outputs whose voltages move in opposite directions. Like an op amp, it relies on high open-loop gain and ...

Page 13

CALCULATING AN APPLICATION CIRCUIT’S INPUT IMPEDANCE The effective input impedance of a circuit such as that in Figure and V depends on whether the amplifier being driven by a single-ended or differential signal source. ...

Page 14

AD8133 APPLICATIONS DRIVING RGB VIDEO SIGNALS OVER CATEGORY-5 UTP CABLE The foremost application of the AD8133 is driving RGB video signals over UTP cable in KVM networks. Single-ended video signals are easily converted to differential signals for transmission over the ...

Page 15

OUTPUT PULL-DOWN The output pull-down feature, when used in conjunction with series Schottky diodes, offers a convenient means to connect a number of AD8133 outputs together to form a video network. The OPD pin is a binary input that controls ...

Page 16

... AD8133ACPZ-REEL −40°C to +85°C 1 AD8133ACPZ-REEL7 −40°C to +85° Pb-free part. © 2004 Analog Devices, Inc. All rights reserved. Trademarks and regis- tered trademarks are the property of their respective owners. 4.00 BSC SQ 0.60 MAX 0.50 BSC TOP 3.75 VIEW BSC SQ 0 ...

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