1
FN7050.1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2004. All Rights Reserved. Elantec is a registered trademark of Elantec Semiconductor, Inc.
All other trademarks mentioned are the property of their respective owners.
EL2150, EL2157
125MHz Single Supply, Clamping Op
Amps
The EL2150 and EL2157 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 that of the EL2150 and EL2157. The
125MHz bandwidth, 275V/s slew rate, and 0.05%/0.05
differential gain/differential phase makes this part ideal for
single or dual supply video speed applications. With its
voltage feedback architecture, these amplifiers 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 operating
from a single supply, the outputs swing completely to ground
without saturating. The outputs can also drive to within 1.2V
of the top rail. The EL2150 and EL2157 will output 100mA
and will operate with single supply voltages as low as 2.7V,
making them ideal for portable, low power applications.
The EL2157 has a high speed disable feature. Applying a
low logic level to this pin reduces the supply current to 0A
within 50ns. This is useful for both multiplexing and reducing
power consumption.
The EL2157 also has an output voltage clamp feature. This
clamp is a fast recovery (<7ns) output clamp that prevents
the 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.
For applications where board space is critical the EL2150 is
available in the tiny 5-pin SOT-23 package, which has a
footprint 28% the size of an 8-pin SO. The EL2150 and
EL2157 are both available in an 8-pin SO package. All parts
operate over the industrial temperature range of -40C to
+85C. For dual, triple, or quad applications, contact the
factory.
Features
Specified for 3V, 5V, or 5V applications
Power-down to 0A (EL2157)
Output voltage clamp (EL2157)
Large input common mode range
0V < V
CM
< V
S
- 1.2V
Output swings to ground without saturating
-3dB bandwidth = 125MHz
0.1dB bandwidth = 30MHz
Low supply current = 5mA
Slew rate = 275V/s
Low offset voltage = 2mV max (SO package)
Output current = 100mA
High open loop gain = 80dB
Diff gain/phase = 0.05%/0.05
Applications
Video amplifiers
PCMCIA applications
A/D drivers
Line drivers
Portable computers
High speed communications
RGB applications
Broadcast equipment
Active filtering
Ordering Information
PART NUMBER
PACKAGE
TAPE & REEL PKG. DWG. #
EL2150CS
8-Pin SO
-
MDP0027
EL2150CS-T7
8-Pin SO
7"
MDP0027
EL2150CS-T13
8-Pin SO
13"
MDP0027
EL2150CW-T7
5-Pin SOT-23
7" (3K pcs)
MDP0038
EL2150CW-T7A 5-Pin SOT-23
7" (250 pcs)
MDP0038
EL2157CS
8-Pin SO
-
MDP0027
EL2157CS-T7
8-Pin SO
7"
MDP0027
EL2157CS-T13
8-Pin SO
13"
MDP0027
Data Sheet
March 12, 2004
2
Pinouts
EL2150
(8-PIN SO)
TOP VIEW
EL2157
(8-PIN SO)
TOP VIEW
EL2150
(5-PIN SOT-23)
TOP VIEW
EL2150, EL2157
3
Absolute Maximum Ratings
(T
A
= 25C)
Supply Voltage between V
S
+ and GND . . . . . . . . . . . . . . . . +12.6V
Input Voltage (IN+, IN-, ENABLE, CLAMP) . . . GND-0.3V, V
S
+0.3V
Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6V
Maximum Output Current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90mA
Output Short Circuit Duration. . . . . . . . . . . . . . . . . . . . . . . . (Note 1)
Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Curves
Storage Temperature Range . . . . . . . . . . . . . . . . . .-65C to +150C
Ambient Operating Temperature Range . . . . . . . . . .-40C to +85C
Operating Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . 150C
CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed. Typical values are for information purposes only. Unless otherwise noted, all tests
are at the specified temperature and are pulsed tests, therefore: T
J
= T
C
= T
A
DC Electrical Specifications
V
S
= +5V, GND = 0V, T
A
= 25C, V
CM
= 1.5V, V
OUT
= 1.5V, V
CLAMP
= +5V, V
ENABLE
= +5V, unless
otherwise specified. (Note 1)
PARAMETER
DESCRIPTION
CONDITIONS
MIN
TYP
MAX
UNIT
V
OS
Offset Voltage
SO package
-2
2
mV
SOT-23 package
-3
3
mV
TCV
OS
Offset Voltage Temperature
Coefficient
Measured from T
MIN
to T
MAX
10
V/C
IB
Input Bias Current
V
IN
= 0V
-5.5
-10
A
I
OS
Input Offset Current
V
IN
= 0V
-750
150
750
nA
TCI
OS
Input Bias Current Temperature
Coefficient
Measured from T
MIN
to T
MAX
50
nA/C
PSRR
Power Supply Rejection Ratio
V
S
= V
ENABLE
= 2.7V to 12V, V
CLAMP
=
OPEN
55
70
dB
CMRR
Common Mode Rejection Ratio
V
CM
= 0V to 3.8V
55
65
dB
V
CM
= 0V to 3.0V
55
70
dB
CMIR
Common Mode Input Range
0
V
S
-1.2
V
R
IN
Input Resistance
Common mode
1
2
M
C
IN
Input Capacitance
SO package
1
pF
R
OUT
Output Resistance
A
V
= 1
40
m
I
S,ON
Supply Current - Enabled
V
S
= V
CLAMP
= 12V, V
ENABLE
= 12V
5
6.5
mA
I
S,OFF
Supply Current - Shut Down
V
S
= V
CLAMP
= 10V, V
ENABLE
= 0.5V
0
50
A
V
S
= V
CLAMP
= 12V, V
ENABLE
= 0.5V
5
A
PSOR
Power Supply Operating Range
2.7
12.0
V
AVOL
Open Loop Gain
V
S
= V
CLAMP
= 12V, V
OUT
= 2V
65
80
dB
9V, R
L
= 1k
to GND
V
OUT
= 1.5V to 3.5V
70
dB
R
L
= 1k
to GND
V
OUT
= 1.5V to 3.5V
60
dB
R
L
= 150
to GND
V
OP
Positive Output Voltage Swing
V
S
= 12V, A
V
= 1, R
L
= 1k
to 0V
10.8
V
V
S
= 12V, A
V
= 1, R
L
= 150
to 0V
9.6
10.0
V
V
S
= 5V, A
V
= 1, R
L
= 1k
to 0V
4.0
V
V
S
= 5V, A
V
= 1, R
L
= 150
to 0V
3.4
3.8
V
V
S
= 3V, A
V
= 1, R
L
= 150
to 0V
1.8
1.95
V
EL2150, EL2157
4
NOTES:
1. CLAMP pin and ENABLE pin specifications apply only to the EL2157.
2. Internal short circuit protection circuitry has been built into the EL2150/EL2157. See the Applications section.
3. If the disable feature is not desired, tie the ENABLE pin to the V
S
pin, or apply a logic high level to the ENABLE pin.
4. The maximum output voltage that can be clamped is limited to the maximum positive output Voltage, or V
OP
. Applying a voltage higher than
V
OP
inactivates the clamp. If the clamp feature is not desired, either tie the CLAMP pin to the V
S
pin, or simply let the CLAMP pin float.
V
ON
Negative Output Voltage Swing
V
S
= 12V, A
V
= 1, R
L
= 150
to 0V
5.5
8
mV
V
S
= 5V, A
V
= 1, R
L
= 1k
to 0V
-4.0
V
V
S
= 5V, A
V
= 1, R
L
= 150
to 0V
-3.7
-3.4
V
I
OUT
Output Current (Note 2)
V
S
= 5V, A
V
= 1, R
L
= 10
to 0V
75
100
mA
V
S
= 5V, A
V
= 1, R
L
= 50
to 0V
60
mA
I
OUT,OFF
Output Current, Disabled
V
ENABLE
= 0.5V
0
20
A
V
IH-EN
ENABLE pin Voltage for Power Up
Relative to GND pin
2.0
V
V
IL-EN
ENABLE pin Voltage for Shut Down Relative to GND pin
0.5
V
I
IH-EN
ENABLE pin Input Current-High
(Note 3)
V
S
= V
CLAMP
= 12V, V
ENABLE
= 12V
340
410
A
I
IL-EN
ENABLE pin Input Current-Low
(Note 3)
V
S
= V
CLAMP
= 12V, V
ENABLE
= 0.5V
0
1
A
V
OR-CL
Voltage Clamp Operating Range
(Note 4)
Relative to GND pin
1.2
V
OP
V
V
ACC-CL
CLAMP Accuracy
V
IN
= 4V, R
L
= 1k
to GND
-250
100
250
mV
V
CLAMP
= 1.5V and 3.5V
I
IH-CL
CLAMP pin Input Current - High
V
S
= V
CLAMP
= 12V
12
25
A
I
IL-CL
CLAMP pin Input Current - Low
V
S
= 12V, V
CLAMP
= 1.2V
-20
-15
A
DC Electrical Specifications
V
S
= +5V, GND = 0V, T
A
= 25C, V
CM
= 1.5V, V
OUT
= 1.5V, V
CLAMP
= +5V, V
ENABLE
= +5V, unless
otherwise specified. (Note 1) (Continued)
PARAMETER
DESCRIPTION
CONDITIONS
MIN
TYP
MAX
UNIT
EL2150, EL2157
5
NOTES:
1. CLAMP pin and ENABLE pin specifications apply only to the EL2157.
2. All AC tests are performed on a "warmed up" part, except slew rate, which is pulse tested.
3. Standard NTSC signal = 286mV
P-P
, f = 3.58MHz, as V
IN
is swept from 0.6V to 1.314V.R
L
is DC coupled.
4. Disable/Enable time is defined as the time from when the logic signal is applied to the ENABLE pin to when the supply current has reached half
its final value.
Closed Loop AC Electrical Specifications
V
S
= +5V, GND = 0V, T
A
= 25C, V
CM
= +1.5V, V
OUT
= +1.5V,
V
CLAMP
= +5V,
V
ENABLE
= +5V, A
V
= +1, R
F
= 0
, R
L
= 150
to GND pin, unless otherwise specified.
(Notes 1 and 2)
PARAMETER
DESCRIPTION
CONDITIONS
MIN
TYP
MAX
UNIT
BW
-3dB Bandwidth (V
OUT
= 400mV
P-P
)
V
S
= 5V, A
V
= 1, R
F
= 0
125
MHz
V
S
= 5V, A
V
= -1, R
F
= 500
60
MHz
V
S
= 5V, A
V
= 2, R
F
= 500
60
MHz
V
S
= 5V, A
V
= 10, R
F
= 500
6
MHz
V
S
= 12V, A
V
= 1, R
F
= 0
150
MHz
V
S
= 3V, A
V
= 1, R
F
= 0
100
MHz
BW
0.1dB Bandwidth (V
OUT
= 400mV
P-P
) V
S
= 12V, A
V
= 1, R
F
= 0
25
MHz
V
S
= 5V, A
V
= 1, R
F
= 0
30
MHz
V
S
= 3V, A
V
= 1, R
F
= 0
20
MHz
GBWP
Gain Bandwidth Product
V
S
= 12V, @ A
V
= 10
60
MHz
PM
Phase Margin
R
L
= 1k
, C
L
= 6 pF
55
SR
Slew Rate
V
S
= 10V, R
L
= 150
, V
OUT
= 0V to 6V
200
275
V/s
V
S
= 5V, R
L
= 150
, V
OUT
= 0V to 3V
300
V/s
t
R
,t
F
Rise Time, Fall Time
0.1V step
2.8
ns
OS
Overshoot
0.1V step
10
%
t
PD
Propagation Delay
0.1V step
3.2
ns
t
S
0.1% Settling Time
V
S
= 5V, R
L
= 500
, A
V
= 1, V
OUT
= 3V
40
ns
0.01% Settling Time
V
S
= 5V, R
L
= 500
, A
V
= 1, V
OUT
= 3V
75
ns
dG
Differential Gain (Note 3)
A
V
= 2, R
F
= 1k
0.05
%
dP
Differential Phase (Note 3)
A
V
= 2, R
F
= 1k
0.05
e
N
Input Noise Voltage
f = 10kHz
48
nV/
Hz
i
N
Input Noise Current
f = 10kHz
1.25
pA/
Hz
t
DIS
Disable Time (Note 4)
50
ns
t
EN
Enable Time (Note 4)
25
ns
t
CL
Clamp Overload Recovery
7
ns
EL2150, EL2157
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