EL2120CS Intersil Corporation, EL2120CS Datasheet

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EL2120CS

Manufacturer Part Number
EL2120CS
Description
Manufacturer
Intersil Corporation
Datasheet

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100MHz Current Feedback Amplifier
gain and 0.03 degree differential phase performance when
at ±5V supplies exceeds the performance of other amplifiers
running on ±15V supplies. Operating on ±8 to ±15V supplies
reduces distortions to 0.01% and 0.01 degrees and below.
The EL2120 can operate with supplies as low as ±2.5V or a
single +5V supply.
Being a current feedback design, bandwidth is a relatively
constant 100MHz over the ±1 to ±10 gain range. The
EL2120 has been optimized for flat gain over frequency and
all characteristics are maintained at positive unity gain.
Because the input slew rate is similar to the 700V/µs output
slew rate the part makes an excellent high-speed buffer.
The EL2120 has a superior output disable function. Time to
enable or disable is 50ns and does not change markedly
with temperature. Furthermore, in disable mode the output
does not draw excessive currents when driven with
1000V/µs slew rates. The output appears as a 3pF load
when disabled.
Simplified Schematic
The EL2120 is a wideband current
feedback amplifier optimized for video
performance. Its 0.01% differential
®
1
Data Sheet
Copyright © Intersil Americas Inc. 2003. All Rights Reserved. Elantec is a registered trademark of Elantec Semiconductor, Inc.
1-888-INTERSIL or 321-724-7143
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Features
• Excellent differential gain and phase on ±5V to ±15V
• 100MHz -3dB bandwidth from gains of ±1 to ±10
• 700V/µs slew rate
• 0.1dB flatness to 20MHz
• Output disable in 50ns - remains high impedance even
• Single +5V supply operation
• AC characteristics are lot and temperature stable
• Available in small SO-8 package
Applications
• Video gain block
• Residue amplifier
• Multiplexer
• Current to voltage converter
• Coax cable driver with gain of 2
• ADC driver
Ordering Information
Pinouts
January 1996, Rev E
EL2120CN
EL2120CS
supplies
when driven with large slew rates
NUMBER
PART
(8-PIN PDIP)
All other trademarks mentioned are the property of their respective owners.
TOP VIEW
EL2120
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
TEMP. RANGE
0°C to +75° C
0°C to +75° C
PACKAGE
8-Pin PDIP
8-Pin SO
(8-PIN SO)
TOP VIEW
EL2120
EL2120
PKG. NO.
MDP0031
MDP0027
FN7044

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EL2120CS Summary of contents

Page 1

... Multiplexer • Current to voltage converter • Coax cable driver with gain of 2 • ADC driver Ordering Information PART NUMBER EL2120CN EL2120CS Pinouts EL2120 (8-PIN PDIP) TOP VIEW CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. | 1-888-INTERSIL or 321-724-7143 Copyright © ...

Page 2

Absolute Maximum Ratings (T = 25°C) A Voltage between V+ and ...

Page 3

Closed-Loop AC Electrical Specifications PARAMETER SR Slew Rate; V from -3V to +3V OUT Measured at -2V and +2V t Settling Time to 0.25 +10V Swing 270 ×, and ...

Page 4

Typical Performance Curves Gain Flatness vs R -3dB Bandwidth, 0.1dB Bandwidth, and Peaking vs Temperature at V ±15V S -3dB Bandwidth, 0.1dB Bandwidth, and Peaking vs Supply Voltage 4 EL2120 (Continued) F Gain Flatness -3dB Bandwidth, ...

Page 5

Typical Performance Curves Differential Gain vs DC Input Offset at 3.58MHz Differential Gain vs DC Input Offset at 30MHz Differential Gain and Phase vs Supply Voltage ( from 0 to +0.7V EL2120 (Continued) Differential Phase vs ...

Page 6

Typical Performance Curves Undistorted Output Swing vs Frequency Small-Signal Transient Response 150: L Settling Time vs Swing 6 EL2120 (Continued) = 270:, G Slew Rate vs Temperature Large-Signal Transient Response ...

Page 7

Typical Performance Curves Enable Response for a Family of Inputs 150 ±5V S Supply Current vs Supply Voltage Applications Information The EL2120 represents the third generation of current- feedback amplifier design. ...

Page 8

This is a resistor and capacitor in series connected from output to ground. Values of 68: and 33pF are typical. Increasing the feedback resistor can also improve frequency flatness. The V + pin can oscillate ...

Page 9

Typical Applications Circuit—A High Quality Two-Input Multiplexer Dual EL2120 Multiplexer Dual EL2120 Multiplexer Switching Channels: Uncorrelated Sinewave Switched to a Family of DC Levels 9 EL2120 Channel-to-Channel Isolation of Dual EL2120 Multiplexer Dual EL2120 Multiplexer Switching Channels: a Family of ...

Page 10

The EL2120 Macromodel This macromodel has been developed to assist the user in simulating the EL2120 with surrounding circuitry. It was developed for the PSPICE simulator (copyrighted by the Microsim corporation), and may need to be rearranged for other simulators, ...

Page 11

Supply * ips 7 4 10mA * * Error Terms * ivos 0 23 5mA vxx 23 ...

Page 12

... Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use ...

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