EL2045
DESIGNS
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FN7030
Rev 1.00
February 11, 2005
Low-Power 100MHz Gain-of-2 Stable Operational Amplifier
The EL2045 is a high speed, low power, low cost monolithic
operational amplifier built on Elantec's proprietary
complementary bipolar process. The EL2045 is gain-of-2
stable and features a 275V/µs slew rate and 100MHz gain-
bandwidth at gain-of-2 while requiring only 5.2mA of supply
current.
The power supply operating range of the EL2045 is from
±18V down to as little as ±2V. For single-supply operation,
the EL2045 operates from 36V down to as little as 2.5V. The
excellent power supply operating range of the EL2045
makes it an obvious choice for applications on a single +5V
or +3V supply.
The EL2045 also features an extremely wide output voltage
swing of ±13.6V with V
S
= ±15V and R
L
= 1k. 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 +2, the EL2045 has a -3dB bandwidth of
100MHz with a phase margin of 50°. Because of its
conventional voltage-feedback topology, the EL2045 allows
the use of reactive or non-linear elements in its feedback
network. This versatility combined with low cost and 75mA of
output-current drive makes the EL2045 an ideal choice for
price-sensitive applications requiring low power and high
speed.
Features
• 100MHz gain-bandwidth at gain-of-2
• Gain-of-2 stable
• Low supply current - 5.2mA at V
S
= ±15V
• Wide supply range - ±2V to ±18V dual-supply and 2.5V to
36V single-supply
• 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
= 150
• Low differential phase - 0.07° at A
V
= +2, R
L
= 150
• Wide output voltage swing - ±13.6V with V
S
= ±15V,
R
L
= 1kand 3.8V/0.3V with V
S
= +5V, R
L
= 500
•
Pb-Free available (RoHS compliant)
Applications
• Video amplifiers
• Single-supply amplifiers
• Active filters/integrators
• High speed sample-and-hold
• High speed signal processing
• ADC/DAC buffers
• Pulse/RF amplifiers
Ordering Information
PART NUMBER
EL2045CS
EL2045CS-T7
EL2045CS-T13
EL2045CSZ
(See Note)
EL2045CSZ-T7
(See Note)
EL2045CSZ-T13
(See Note)
EL2045CN
PACKAGE
8-Pin SO
8-Pin SO
8-Pin SO
8-Pin SO
(Pb-free)
8-Pin SO
(Pb-free)
8-Pin SO
(Pb-free)
8-Pin PDIP
TAPE & REEL PKG. DWG. #
-
7”
13”
-
7”
13”
-
MDP0027
MDP0027
MDP0027
MDP0027
• Pin diode receivers
• Log amplifiers
• Photo multiplier amplifiers
• Difference amplifiers
Pinout
MDP0027
MDP0027
MDP0031
EL2045
(8-PIN SO & 8-PIN PDIP)
TOP VIEW
NC 1
IN- 2
IN+ 3
V- 4
8 NC
7 V+
6 OUT
5 NC
NOTE: Intersil Pb-free products employ special Pb-free material sets;
molding compounds/die attach materials and 100% matte tin plate
termination finish, which are RoHS compliant and compatible with
both SnPb and Pb-free soldering operations. Intersil Pb-free products
are MSL classified at Pb-free peak reflow temperatures that meet or
exceed the Pb-free requirements of IPC/JEDEC J STD-020.
-
+
FN7030 Rev 1.00
February 11, 2005
Page 1 of 10
EL2045
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . 60mA
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
Input Offset Voltage
V
S
= ±15V, R
L
= 1k unless otherwise specified.
CONDITION
V
S
= ±15V
TEMP
25°C
T
MIN
, T
MAX
MIN
TYP
0.5
MAX
7.0
9.0
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
95
85
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
TCV
OS
I
B
Average Offset Voltage Drift
Input Bias Current
V
S
= ±15V
All
25°C
T
MIN
, T
MAX
V
S
= ±5V
25°C
25°C
T
MIN
, T
MAX
V
S
= ±5V
25°C
All
25°C
T
MIN
, T
MAX
V
S
= ±5V, V
OUT
= ±2.5V, R
L
= 500
V
S
= ±5V, V
OUT
= ±2.5V, R
L
= 150
25°C
25°C
25°C
T
MIN
, T
MAX
I
OS
Input Offset Current
V
S
= ±15V
TCI
OS
A
VOL
Average Offset Current Drift
Open-loop Gain
(Note 1)
V
S
= ±15V,V
OUT
= ±10V, R
L
= 1k
PSRR
Power Supply Rejection Ratio
V
S
= ±5V to ±15V
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
= 1k
V
S
= ±15V, R
L
= 500
V
S
= ±5V, R
L
= 500
V
S
= ±5V, R
L
= 150
V
S
= +5V, R
L
= 500
25°C
25°C
25°C
25°C
T
MIN
, T
MAX
I
SC
Output Short Circuit Current
25°C
T
MIN
, T
MAX
FN7030 Rev 1.00
February 11, 2005
Page 2 of 10
EL2045
DC Electrical Specifications
PARAMETER
I
S
Supply Current
V
S
= ±15V, R
L
= 1k 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
= +2 @10MHz
A
V
= +2
Dual-supply
Single-supply
NOTE:
1. Measured from T
MIN
To T
MAX
.
DESCRIPTION
MIN
TYP
5.2
MAX
7
7.6
UNIT
mA
mA
mA
k
M
pF
m
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
V
V
Closed-Loop AC Electrical Specifications
PARAMETER
BW
DESCRIPTION
-3dB Bandwidth (V
OUT
= 0.4V
PP
)
V
S
= ±15V, A
V
= +2, R
F
= R
G
= 1k, C
F
= 3pF, R
L
= 1k unless otherwise specified.
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
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
V
S
= ±15V, 10V step
V
S
= ±5V, 5V step
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
275
200
4.4
12.7
3.0
20
2.5
80
60
0.02
0.07
15.0
1.50
Infinite
MAX
UNIT
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
°
V/µs
V/µs
MHz
MHz
ns
%
ns
ns
ns
%
°
nV/Hz
pA/Hz
pF
GBWP
Gain-bandwidth Product
V
S
= ±15V
V
S
= ±5V
PM
SR
Phase Margin
Slew Rate (Note 1)
R
L
= 1k, C
L
= 10pF
V
S
= ±15V, R
L
= 1k
V
S
= ±5V, R
L
= 500
FPBW
Full-power Bandwidth (Note 2)
V
S
= ±15V
V
S
= ±5V
t
R
, t
F
OS
t
PD
t
S
Rise Time, Fall Time
Overshoot
Propagation Delay
Settling to +0.1% (A
V
= +2)
0.1V output step
0.1V output step
dG
dP
eN
iN
CI STAB
NOTES:
Differential Gain (Note 3)
Differential Phase (Note 3)
Input Noise Voltage
Input Noise Current
Load Capacitance Stability
NTSC/PAL
NTSC/PAL
10kHz
10kHz
A
V
= +2
1. Slew rate is measured on rising edge.
2. For V
S
= ±15V, V
OUT
= 20V
PP
. For V
S
= ±5V, V
OUT
= 5 V
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.
FN7030 Rev 1.00
February 11, 2005
Page 3 of 10
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