EL2150C/EL2157C
125 MHz Single Supply, Clamping Op Amps
Features
General Description
a
5V Applications
a
5V, or
The EL2150C/EL2157C are the electronics industry’s fastest
single supply op amps available. Prior single supply op amps
have generally been limited to bandwidths and slew rates (/4
that of the EL2150C/EL2157C. The 125 MHz bandwidth,
# Specified for
3V,
g
# Power Down to 0 mA (EL2157C)
# Output Voltage Clamp
(EL2157C)
275 V/ms slew rate, and 0.05%/0.05 differential gain/differen-
§
tial phase makes this part ideal for single or dual supply video
speed applications. With its voltage feedback architecture, this
amplifier can accept reactive feedback networks, allowing them
to be used in analog filtering applications. The inputs can sense
signals below the bottom supply rail and as high as 1.2V below
the top rail. Connecting the load resistor to ground and operat-
ing from a single supply, the outputs swing completely to
ground without saturating. The outputs can also drive to within
# Large Input Comon Mode Range
k
k
Vs - 1.2V
0V
V
CM
# Output Swings to Ground
Without Saturating
b
g
e
125 MHz
#
#
3 dB Bandwidth
e
0.1 dB Bandwidth
30 MHz
5 mA
e
# Low Supply Current
g
1.2V of the top rail. The EL2150C/EL2157C will output 100
mA and will operate with single supply voltages as low as 2.7V,
e
# Slew Rate
275V/ms
e
(PDIP and SO Packages)
# Low Offset Voltage
2 mV max
making it ideal for portable, low power applications.
e
The EL2157C has a high speed disable feature. Applying a low
logic level to this pin reduces the supply current to 0 mA within
50 ns. This is useful for both multiplexing and reducing power
consumption.
g
e
0.05%
# Output Current
100 mA
# High Open Loop Gain
80 dB
e
# Differential Gain
e
# Differential Phase
0.05
§
The EL2157C also has an output voltage clamp feature. This
k
output voltage from going above the preset clamp voltage. This
feature is desirable for A/D applications, as A/D converters can
require long times to recover if overdriven.
Applications
# Video Amplifier
# PCMCIA Applications
# A/D Driver
clamp is a fast recovery ( 7 ns) output clamp that prevents the
# Line Driver
# Portable Computers
# High Speed Communications
# RGB Applications
# Broadcast Equipment
# Active Filtering
For applications where board space is critical the EL2150C is
available in the tiny 5 lead SOT23 package, which has a foot-
print 28% the size of an 8 lead SOIC. The EL2150C/EL2157C
are also both available in 8 pin plastic DIP and SOIC packages.
All parts operate over the industrial temperature range of
b
the factory.
a
40 C to 85 C. For dual, triple, or quad applications, contact
§
§
Ordering Information
Package Outline
Ý
Part No. Temp. Range
Connection Diagrams
b
b
b
b
b
a
40 C to 85 C 8 Pin PDIP MDP0031
EL2150CN
EL2150CS
EL2150CW
EL2157CN
EL2157CS
§
§
EL2150C
SO, P-DIP
EL2157C
SO, P-DIP
EL2150C
SOT23-5
a
40 C to 85 C 8 Pin SOIC
MDP0027
§
§
a
40 C to 85 C 5 Pin SOT23* MDP0038
§
§
a
40 C to 85 C 8 Pin PDIP MDP0031
§
§
a
40 C to 85 C 8 Pin SOIC
MDP0027
§
§
*See Ordering Information section of
databook.
2150–3
2150–2
2150–1
Top View
Top View
Top View
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.
©
1995 Elantec, Inc.