EL2244C, EL2444C
EL2244C, EL2444C
Dual/Quad Low-Power 120MHz Unity-Gain Stable Op Amp
Features
• 120MHz gain-bandwidth product
• Unity-gain stable
• Low supply current (per amplifier)
- 5.2mA at V
S
= ±15V
• Wide supply range - ±2V to ±18V
dual-supply, 2.5V to 36V single-
supply
• High slew rate - 325V/µs
• Fast settling - 80ns to 0.1% for a
10V step
• Low differential gain - 0.04% at
A
V
= +2, R
L
= 150¾
• Low differential phase - 0.15° at
A
V
= +2, R
L
= 150Ω
• Stable w/ unlimited capacitive load
• Wide output voltage swing -
±13.6V with V
S
= ±15V, R
L
=
1000Ω, 3.8V/0.3V with V
S
= +5V,
R
L
= 500Ω
• Low cost, enhanced replacement
for the AD827
andLT1229/LT1230
General Description
The EL2244C/EL2444C are dual and quad versions of the popular
EL2044C. They are high speed, low power, low cost monolithic oper-
ational amplifiers built on Elantec's proprietary complementary
bipolar process. The EL2244C/EL2444C are unity-gain stable and
feature a 325V/µs slew rate and 120MHz gain-bandwidth product
while requiring only 5.2mA of supply current per amplifier.
The power supply operating range of the EL2244C/EL2444C is from
±18V down to as little as ±2V. For single-supply operation, the
EL2244C/EL2444C operate from 36V down to as little as 2.5V. The
excellent power supply operating range of the EL2244C/EL2444C
makes them an obvious choice for applications on a single +5V or
+3V supply.
The EL2244C/EL2444C also feature an extremely wide output volt-
age swing of ±13.6V with V
S
= ±15V and R
L
= 1000Ω. At ±5V,
output voltage swing is a wide ±3.8V with R
L
= 500Ω and ±3.2V with
R
L
= 150Ω. Furthermore, for single-supply operation at +5V, output
voltage swing is an excellent 0.3V to 3.8V with R
L
= 500Ω.
At a gain of +1, the EL2244C/EL2444C have a -3dB bandwidth of
120MHz with a phase margin of 50°. They can drive unlimited load
capacitance, and because of their conventional voltage-feedback
topology, the EL2244C/EL2444C allow the use of reactive or non-lin-
ear elements in their feedback network. This versatility combined with
low cost and 75mA of output-current drive make the
EL2244C/EL2444C an ideal choice for price-sensitive applications
requiring low power and high speed.
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
Connection Diagrams
EL2244CN/CS
Dual
EL2444CN/CS
Quad
September 26, 2001
Ordering Information
Part No.
EL2244CN
EL2244CS
EL2444CN
EL2444CS
EL2444CM
Temp. Range
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
Package
8-Pin P-DIP
8-Lead SO
14-Pin P-DIP
14-Lead SO
16-Lead SOL
Outline #
MDP0031
MDP0027
MDP0031
MDP0027
MDP0027
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.
EL2244C, EL2444C
EL2244C, EL2444C
Dual/Quad Low-Power 120MHz Unity-Gain Stable Op Amp
Absolute Maximum Ratings
(T
Supply Voltage (V
S
)
Peak Output Current (I
OP
)
Output Short-Circuit Duration
A heat-sink is required to keep junction temperature
below absolute maximum when an output is shorted.
A
= 25 °C)
±18V or 36V
Short-Circuit Protected
Infinite
Input Voltage (V
IN)
±V
S
Differential Input Voltage (dV
IN
)
Power Dissipation (P
D
)
Operating Temperature Range (T
A
)
Operating Junction Temperature (T
J
)
Storage Temperature (T
ST
)
±10V
See Curves
-40°C to +85°C
150°C
-65°C to +150°C
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
= 1000Ω, unless otherwise specified
Parameter
V
OS
TCV
OS
I
B
Description
Input Offset
Voltage
Average Offset Voltage Drift
Input Bias
Current
Input Offset
Current
Average Offset Current Drift
Open-Loop Gain
V
S
= ±15V
[1]
Condition
Temp
25°C
T
MIN
, T
MAX
All
25°C
T
MIN
, T
MAX
25°C
25°C
T
MIN
, T
MAX
25°C
All
25°C
T
MIN
, T
MAX
25°C
25°C
25°C
T
MIN
, T
MAX
25°C
T
MIN
, T
MAX
25°C
25°C
25°C
25°C
T
MIN
, T
MAX
25°C
25°C
25°C
25°C
T
MIN
, T
MAX
25°C
T
MIN
, T
MAX
Min
Typ
0.5
10.0
2.8
2.8
50
50
0.3
Max
4.0
9.0
8.2
11.2
300
500
Unit
mV
mV
µV/°C
µA
µA
µA
nA
nA
nA
nA/°C
V/V
V/V
V/V
V/V
dB
dB
dB
dB
V
V
V
V
V
V
V
V
V
V
mA
mA
V
S
= ±15V
V
S
= ±5V
I
OS
V
S
= ±15V
V
S
= ±5V
TCI
OS
A
VOL
[1]
V
S
= ±15V,V
OUT
= ±10V, R
L
= 1000Ω
V
S
= ±5V, V
OUT
= ±2.5V, R
L
= 500Ω
V
S
= ±5V, V
OUT
= ±2.5V, R
L
= 150Ω
800
600
1500
1200
1000
PSRR
CMRR
CMIR
Power Supply
Rejection Ratio
Common-Mode
Rejection Ratio
Common-Mode
Input Range
Output Voltage
Swing
V
S
= ±5V to ±15V
V
CM
= ±12V, V
OUT
= 0V
V
S
= ±15V
V
S
= ±5V
V
S
= +5V
V
S
= ±15V, R
L
= 1000Ω
V
S
= ±15V, R
L
= 500Ω
V
S
= ±5V, R
L
= 500Ω
V
S
= ±5V, R
L
= 150Ω
V
S
= +5V, R
L
= 500Ω
65
60
70
70
80
90
±14.0
±4.2
4.2/0.1
V
OUT
±13.4
±13.1
±12.0
±3.4
3.6/0.4
3.5/0.5
40
35
±13.6
±13.4
±3.8
±3.2
3.8/0.3
75
5.2
7
7.6
7.6
5.0
I
SC
I
S
Output Short
Circuit Current
Supply Current
(Per Amplifier)
V
S
= ±15V, No Load
25°C
T
MIN
T
MAX
mA
mA
mA
mA
V
S
= ±5V, No Load
25°C
2
EL2244C, EL2444C
EL2244C, EL2444C
Dual/Quad Low-Power 120MHz Unity-Gain Stable Op Amp
Closed-Loop AC Electrical Characteristics
V
S
= ±15V, A
V
= +1, R
L
= 1000Ω unless otherwise specified
Parameter
BW
Description
-3dB Bandwidth
(V
OUT
= 0.4V
PP
)
Condition
V
S
= ±15V, A
V
= +1
V
S
= ±15V, A
V
= -1
V
S
= ±15V, A
V
= +2
V
S
= ±15V, A
V
= +5
V
S
= ±15V, A
V
= +10
V
S
= ±5V, A
V
= +1
GBWP
PM
CS
SR
FPBW
t
r
, t
f
OS
t
PD
t
s
dG
dP
eN
iN
CI STAB
Gain-Bandwidth Product
Phase Margin
Channel Separation
Slew
Rate
[1]
Bandwidth
[2]
V
S
= ±15V
V
S
= ±5V
R
L
= 1 k¾, C
L
= 10pF
f = 5MHz
V
S
= ±15V, R
L
= 1000Ω
V
S
= ±5V, R
L
= 500Ω
Full-Power
V
S
= ±15V
V
S
= ±5V
Rise Time, Fall Time
Overshoot
Propagation Delay
Settling to +0.1%
(A
V
= +1)
Differential Gain
[3]
Temp
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
Min
Typ
120
60
60
12
6
80
60
45
50
85
Max
Unit
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
°
dB
V/µs
V/µs
MHz
MHz
ns
%
ns
ns
ns
%
°
nV√Hz
pA√Hz
pF
250
4.0
325
200
5.2
12.7
3.0
20
2.5
80
60
0.04
0.15
15.0
1.50
Infinite
0.1V Step
0.1V Step
V
S
= ±15V, 10V Step
V
S
= ±5V, 5V Step
NTSC/PAL
NTSC/PAL
10kHz
10kHz
A
V
= +1
Differential Phase
[3]
Input Noise Voltage
Input Noise Current
Load Capacitance Stability
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/(2π *
Vpeak).
3. Video Performance measured at V
S
= ±15V, A
V
= +2 with 2 times normal video level across R
L
= 150Ω. This corresponds to standard video levels
across a back-terminated 75Ω load. For other values of R
L
, see curves.
4
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