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.
E
L
2
0
4
4
C
General Description
The EL2044C is a high speed, low power, low cost monolithic opera-
tional amplifier built on Elantec's proprietary complementary bipolar
process. The EL2044C is unity-gain stable and features a 325V/s
slew rate and 120MHz gain-bandwidth product while requiring only
5.2 mA of supply current.
The power supply operating range of the EL2044C is from 18V
down to as little as 2V. For single-supply operation, the EL2044C
operates from 36V down to as little as 2.5V. The excellent power sup-
ply operating range of the EL2044C makes it an obvious choice for
applications on a single +5V supply.
The EL2044C also features an extremely wide output voltage swing of
13.6V with V
S
= 15V and R
L
= 1000
. At 5V, output voltage
swing is a wide 3.8V with R
L
= 500
and 3.2V with R
L
= 150
.
Furthermore, for single-supply operation at +5V, output voltage swing
is an excellent 0.3V to 3.8V with R
L
= 500
.
At a gain of +1, the EL2044C has a -3dB bandwidth of 120MHz with
a phase margin of 50. It can drive unlimited load capacitance, and
because of its conventional voltage-feedback topology, the EL2044C
allows the use of reactive or non-linear elements in its feedback net-
work. This versatility combined with low cost and 75mA of output-
current drive makes the EL2044C an ideal choice for price-sensitive
applications requiring low power and high speed.
Connection Diagram
DIP and SO Package
Features
120MHz -3dB bandwidth
Unity-gain stable
Low supply current
= 5.2mA at V
S
= 15V
Wide supply range
= 2V to 18V dual-supply
= 2.5V to 36V single-supply
High slew rate = 325V/s
Fast settling = 80ns to 0.1% for a
10V step
Low differential gain = 0.04% at
A
V
= +2, R
L
= 150
Low differential phase = 0.15 at
A
V
= +2, R
L
= 150
Stable with unlimited capacitive
load
Wide output voltage swing
= 13.6V with V
S
= 15V,
R
L
= 1000
= 3.8V/0.3V with V
S
= +5V,
R
L
= 500
Low cost, enhanced replacement
for the AD847 and LM6361
Applications
Video amplifier
Single-supply amplifier
Active filters/integrators
High-speed sample-and-hold
High-speed signal processing
ADC/DAC buffer
Pulse/RF amplifier
Pin diode receiver
Log amplifier
Photo multiplier amplifier
Difference amplifier
Ordering Information
Part No.
Temp. Range
Package
Outline #
EL2044CN
-40C to +85C
8-Pin P-DIP
MDP0031
EL2044CS
-40C to +85C
8-Lead SO
MDP0027
EL2044C
Low Power/Low Voltage 120MHz Unity-Gain Stable Operational Amplifier
S
e
p
t
e
m
b
e
r
2
6
,
2
0
0
1
2
EL2044C
Low Power/Low Voltage 120MHz Unity-Gain Stable Operational Amplifier
E
L
2
0
4
4
C
Absolute Maximum Ratings
(T
A
= 25C)
Supply Voltage (V
S
)
18V or 36V
Peak Output Current (I
OP
)
Short-Circuit Protected
Output Short-Circuit Duration
Infinite
(A heat-sink is required to keep junction temperature
below absolute maximum when an output is shorted.)
Input Voltage (V
IN)
V
S
Differential Input Voltage (dV
IN
)
10V
Power Dissipation (P
D
)
See Curves
Operating Temperature
Range (T
A
)
-40C to +85C
Operating Junction
Temperature (T
J
)
150C
Storage Temperature (T
ST
)
-65C to +150C
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: T
J
= T
C
= T
A
.
DC Electrical Characteristics
V
S
= 15V, R
L
= 1000
, unless otherwise specified
Parameter
Description
Condition
Temp
Min
Typ
Max
Unit
V
OS
Input Offset
Voltage
V
S
= 15V
25C
0.5
7.0
mV
T
MIN
, T
MAX
13.0
mV
TCV
OS
Average Offset
(Note 2)
All
10.0
V/C
Voltage Drift
I
B
Input Bias
Current
V
S
= 15V
25C
2.8
8.2
A
T
MIN
, T
MAX
11.2
A
V
S
= 5V
25C
2.8
A
I
OS
Input Offset
Current
V
S
= 15V
25C
50
300
nA
T
MIN
, T
MAX
500
nA
V
S
= 5V
25C
50
nA
TCI
OS
Average Offset
Current Drift
[1]
All
0.3
nA/C
A
VOL
Open-Loop Gain
V
S
= 15V,V
OUT
= 10V, R
L
= 1000
25C
800
1500
V/V
T
MIN
, T
MAX
600
V/V
V
S
= 5V, V
OUT
= 2.5V, R
L
= 500
25C
1200
V/V
V
S
= 5V, V
OUT
= 2.5V, R
L
= 150
25C
1000
V/V
PSRR
Power Supply
Rejection Ratio
V
S
= 5V to 15V
25C
65
80
dB
T
MIN
, T
MAX
60
dB
CMRR
Common-Mode
Rejection Ratio
V
CM
= 12V, V
OUT
= 0V
25C
70
90
dB
T
MIN
, T
MAX
70
dB
CMIR
Common-Mode
Input Range
V
S
= 15V
25C
14.0
V
V
S
= 5V
25C
4.2
V
V
S
= +5V
25C
4.2/0.1
V
V
OUT
Output Voltage
Swing
V
S
= 15V, R
L
= 1000
25C
13.4
13.6
V
T
MIN
, T
MAX
13.1
V
V
S
= 15V, R
L
= 500
25C
12.0
13.4
V
V
S
= 5V, R
L
= 500
25C
3.4
3.8
V
V
S
= 5V, R
L
= 150
25C
3.2
V
V
S
= +5V, R
L
= 500
25C
3.6/0.4
3.8/0.3
V
T
MIN
, T
MAX
3.5/0.5
V
I
SC
Output Short
Circuit Current
25C
40
75
mA
T
MIN
, T
MAX
35
mA
3
EL2044C
Low Power/Low Voltage 120MHz Unity-Gain Stable Operational Amplifier
E
L
2
0
4
4
C
I
S
Supply Current
V
S
= 15V, No Load
25C
5.2
7
mA
T
MIN
, T
MAX
7.6
mA
V
S
= 5V, No Load
25C
5.0
mA
R
IN
Input Resistance
Differential
25C
150
k
Common-Mode
25C
15
M
C
IN
Input Capacitance
A
V
= +1@ 10MHz
25C
1.0
pF
R
OUT
Output Resistance
A
V
= +1
25C
50
m
PSOR
Power-Supply
Operating Range
Dual-Supply
25C
2.0
18.0
V
Single-Supply
25C
2.5
36.0
V
1. Measured from T
MIN
to T
MAX
.
DC Electrical Characteristics (Continued)
V
S
= 15V, R
L
= 1000
, unless otherwise specified
Parameter
Description
Condition
Temp
Min
Typ
Max
Unit
4
EL2044C
Low Power/Low Voltage 120MHz Unity-Gain Stable Operational Amplifier
E
L
2
0
4
4
C
Closed-Loop AC Electrical Characteristics
V
S
= 15V, A
V
= +1, R
L
= 1000 unless otherwise specified
Parameter
Description
Condition
Temp
Min
Typ
Max
Unit
BW
-3 dB Bandwidth
(V
OUT
= 0.4 V
PP
)
V
S
= 15V, A
V
= +1
25C
120
MHz
V
S
= 15V, A
V
= -1
25C
60
MHz
V
S
= 15V, A
V
= +2
25C
60
MHz
V
S
= 15V, A
V
= +5
25C
12
MHz
V
S
= 15V, A
V
= +10
25C
6
MHz
V
S
= 5V, A
V
= +1
25C
80
MHz
GBWP
Gain-Bandwidth Product
V
S
= 15V
25C
60
MHz
V
S
= 5V
25C
45
MHz
PM
Phase Margin
R
L
= 1 k
, C
L
= 10 pF
25C
50
SR
Slew Rate
[1]
V
S
= 15V, R
L
= 1000
25C
250
325
V/s
V
S
= 5V, R
L
= 500
25C
200
V/s
FPBW
Full-Power Bandwidth
[2]
V
S
= 15V
25C
4.0
5.2
MHz
V
S
= 5V
25C
12.7
MHz
t
r
, t
f
Rise Time, Fall Time
0.1V Step
25C
3.0
ns
OS
Overshoot
0.1V Step
25C
20
%
t
PD
Propagation Delay
25C
2.5
ns
t
s
Settling to +0.1%
(A
V
= +1)
V
S
= 15V, 10V Step
25C
80
ns
V
S
= 5V, 5V Step
60
ns
dG
Differential Gain
[3]
NTSC/PAL
25C
0.04
%
dP
Differential Phase (Note 5)
NTSC/PAL
25C
0.15
eN
Input Noise Voltage
10kHz
25C
15.0
nV/
Hz
iN
Input Noise Current
10kHz
25C
1.50
pA/
Hz
CI STAB
Load Capacitance Stability
A
V
= +1
25C
Infinite
pF
1. Slew rate is measured on rising edge.
2. For V
S
= 15V, V
OUT
= 20V
PP
. For V
S
= 5V, V
OUT
= 5V
PP
. Full-power bandwidth is based on slew rate measurement using: FPBW = SR/(2
*
Vpeak).
3. Video Performance measured at V
S
= 15V, A
V
= +2 with 2 times normal video level across R
L
= 150
. This corresponds to standard video levels
across a back-terminated 75
load. For other values of R
L
, see curves.
5
EL2044C
Low Power/Low Voltage 120MHz Unity-Gain Stable Operational Amplifier
E
L
2
0
4
4
C
Typical Performance Curves
Non-Inverting
Frequency Response
Inverting Frequency Response
Frequency Response for
Various Load Resistances
Equivalent Input Noise
Settling Time vs
Output Voltage Change
Output Voltage Range
vs Supply Voltage
Common-Mode Input Range vs
Supply Voltage
Supply Current vs
Supply Voltage
CMRR, PSRR and Closed-Loop
Output Resistance vs Frequency
Open-Loop Gain and
Phase vs Frequency
Output Voltage Swing
vs Frequency
2nd and 3rd Harmonic
Distortion vs Frequency
PDF 
ZIP