®
EL2245, EL2445
Data Sheet
March 27, 2002
FN7060
Dual/Quad Low-Power 100MHz Gain-of-2
Stable Op Amp
The EL2245 and EL2445 are dual and
quad versions of the popular EL2045.
They are high speed, low power, low
cost monolithic operational amplifiers built on Elantec's
proprietary complementary bipolar process. The EL2245
and EL2445 are gain-of-2 stable and feature a 275V/µs slew
rate and 100MHz bandwidth at gain-of-2 while requiring only
5.2mA of supply current per amplifier.
The power supply operating range of the EL2245 and
EL2445 is from ±18V down to as little as ±2V. For single-
supply operation, the EL2245 and EL2445 operate from 36V
down to as little as 2.5V. The excellent power supply
operating range of the EL2245 and EL2445 makes them an
obvious choice for applications on a single +5V or +3V
supply.
The EL2245 and EL2445 also feature an extremely wide
output voltage swing of ±13.6V with V
S
= ±15V and
R
L
= 1kΩ. 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 +2, the EL2245 and EL2445 have a -3dB
bandwidth of 100MHz with a phase margin of 50°. Because
of their conventional voltage-feedback topology, the EL2245
and EL2445 allow the use of reactive or non-linear elements
in their feedback network. This versatility combined with low
cost and 75mA of output-current drive make the EL2245 and
EL2445 an ideal choice for price-sensitive applications
requiring low power and high speed.
Features
• 100MHz gain-bandwidth
• Gain-of-2 stable
• Low supply current (per amplifier) - 5.2mA at V
S
= ±15V
• Wide supply range - 2.5V to 36V
• High slew rate - 275V/µs
• Fast-settling - 80ns to 0.1% for a 10V step
• Low differential gain - 0.02% at A
V
= +2, R
L
= 150Ω
• Low differential phase - 0.07° at A
V
= +2, R
L
= 150Ω
• Wide output voltage swing - ±13.6V with V
S
= ±15V,
R
L
= 1kΩ
Applications
• Video amplifiers
• Single-supply amplifiers
• Active filters/integrators
• High speed signal processing
• ADC/DAC buffers
• Pulse/RF amplifiers
• Pin diode receivers
• Log amplifiers
Ordering Information
PART NUMBER
EL2245CN
EL2245CS
EL2245CS-T7
EL2245CS-T13
EL2445CN
EL2445CS
EL2445CS-T7
EL2445CS-T13
PACKAGE
8-Pin PDIP
8-Pin SO
8-Pin SO
8-Pin SO
14-Pin PDIP
14-Pin SO (0.150")
14-Pin SO (0.150")
14-Pin SO (0.150")
TAPE &
REEL
-
-
7”
13”
-
-
7”
13”
PKG. NO.
MDP0031
MDP0027
MDP0027
MDP0027
MDP0031
MDP0027
MDP0027
MDP0027
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
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Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2003. All Rights Reserved. Elantec is a registered trademark of Elantec Semiconductor, Inc.
All other trademarks mentioned are the property of their respective owners.
EL2245, EL2445
Absolute Maximum Ratings
(T
A
= 25°C)
Supply Voltage (V
S
) . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±18V or 36V
Input Voltage (V
IN)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±V
S
Differential Input Voltage (dV
IN
) . . . . . . . . . . . . . . . . . . . . . . . . .±10V
Continuous Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . 40mA
Power Dissipation (P
D
) . . . . . . . . . . . . . . . . . . . . . . . . . See Curves
Operating Temperature Range (T
A
) . . . . . . . . . . . . . .-40°C to +85°C
Operating Junction Temperature (T
J
) . . . . . . . . . . . . . . . . . . +150°C
Storage Temperature (T
ST
) . . . . . . . . . . . . . . . . . . .-65°C to +150°C
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
PARAMETER
V
OS
V
S
= ±15V, R
L
= 1kΩ, unless otherwise specified.
CONDITION
V
S
= ±15V
TEMP
25°C
T
MIN
, T
MAX
MIN
TYP
0.5
MAX
4.0
6.0
10.0
2.8
8.2
9.2
2.8
50
300
400
50
0.3
1500
1500
2500
1750
65
60
70
70
±14.0
±4.2
4.2/0.1
±13.4
±13.1
±12.0
±3.4
±13.4
±3.8
±3.2
3.6/0.4
3.5/0.5
40
35
75
3.8/0.3
±13.6
90
80
3000
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
DESCRIPTION
Input Offset Voltage
TCV
OS
I
B
Average Offset Voltage Drift
Input Bias Current
(Note 1)
V
S
= ±15V
All
25°C
T
MIN
, T
MAX
V
S
= ±5V
I
OS
Input Offset Current
V
S
= ±15V
25°C
25°C
T
MIN
, T
MAX
V
S
= ±5V
TCI
OS
A
VOL
Average Offset Current Drift
Open-loop Gain
(Note 1)
V
S
= ±15V,V
OUT
= ±10V, R
L
= 1kΩ
25°C
All
25°C
T
MIN
, T
MAX
V
S
= ±5V, V
OUT
= ±2.5V, R
L
= 500Ω
V
S
= ±5V, V
OUT
= ±2.5V, R
L
= 150Ω
PSRR
Power Supply Rejection Ratio
V
S
= ±5V to ±15V
25°C
25°C
25°C
T
MIN
, T
MAX
CMRR
Common-mode Rejection Ratio
V
CM
= ±12V, V
OUT
= 0V
25°C
T
MIN
, T
MAX
CMIR
Common-mode Input Range
V
S
= ±15V
V
S
= ±5V
V
S
= +5V
25°C
25°C
25°C
25°C
T
MIN
, T
MAX
V
OUT
Output Voltage Swing
V
S
= ±15V, R
L
= 1kΩ
V
S
= ±15V, R
L
= 500Ω
V
S
= ±5V, R
L
= 500Ω
V
S
= ±5V, R
L
= 150Ω
V
S
= +5V, R
L
= 500Ω
25°C
25°C
25°C
25°C
T
MIN
, T
MAX
I
SC
Output Short Circuit Current
25°C
T
MIN
, T
MAX
3
EL2245, EL2445
DC Electrical Specifications
PARAMETER
I
S
V
S
= ±15V, R
L
= 1kΩ, unless otherwise specified.
(Continued)
CONDITION
V
S
= ±15V, no load
TEMP
25°C
T
MIN
T
MAX
V
S
= ±5V, no load
R
IN
Input Resistance
Differential
Common-mode
C
IN
R
OUT
PSOR
Input Capacitance
Output Resistance
Power-supply Operating Range
A
V
= +1 @10MHz
A
V
= +1
Dual-supply
Single-supply
NOTE:
1. Measured from T
MIN
to T
MAX
.
25°C
25°C
25°C
25°C
25°C
25°C
25°C
±2.0
2.5
5.0
150
15
1.0
50
±18.0
36.0
MIN
TYP
5.2
MAX
7
7.6
7.6
UNIT
mA
mA
mA
mA
kΩ
MΩ
pF
mΩ
V
V
DESCRIPTION
Supply Current (per amplifier)
Closed-Loop AC Electrical Specifications
V
S
= ±15V, A
V
= +2, R
L
= 1kΩ unless otherwise specified.
PARAMETER
BW
DESCRIPTION
-3dB Bandwidth
(V
OUT
= 0.4V
PP
)
CONDITION
V
S
= ±15V, A
V
= +2
V
S
= ±15V, A
V
= -1
V
S
= ±15V, A
V
= +5
V
S
= ±15V, A
V
= +10
V
S
= ±15V, A
V
= +20
V
S
= ±5V, A
V
= +2
GBWP
Gain-bandwidth Product
V
S
= ±15V
V
S
= ±5V
PM
CS
SR
Phase Margin
Channel Separation
Slew Rate (Note 1)
R
L
= 1 kΩ, C
L
= 10pF
f = 5MHz
V
S
= ±15V, R
L
= 1kΩ
V
S
= ±5V, R
L
= 500Ω
FPBW
Full-power Bandwidth (Note 2)
V
S
= ±15V
V
S
= ±5V
t
R
, t
F
OS
t
PD
t
S
dG
dP
eN
iN
NOTES:
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.
Rise Time, Fall Time
Overshoot
Propagation Delay
Settling to +0.1% (A
V
= +1)
Differential Gain (Note 3)
Differential Phase (Note 3)
Input Noise Voltage
Input Noise Current
V
S
= ±15V, 10V step
V
S
= ±5V, 5V step
NTSC/PAL
NTSC/PAL
10kHz
10kHz
0.1V step
0.1V step
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
3.2
200
MIN
TYP
100
75
20
10
5
75
200
150
50
85
275
200
4.4
12.7
3.0
20
2.5
80
60
0.02
0.07
15.0
1.50
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
4
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