1
FN7060
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. 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
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/s 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
= 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 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/s
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
= 1k
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
PACKAGE
TAPE &
REEL
PKG. NO.
EL2245CN
8-Pin PDIP
-
MDP0031
EL2245CS
8-Pin SO
-
MDP0027
EL2245CS-T7
8-Pin SO
7"
MDP0027
EL2245CS-T13
8-Pin SO
13"
MDP0027
EL2445CN
14-Pin PDIP
-
MDP0031
EL2445CS
14-Pin SO (0.150")
-
MDP0027
EL2445CS-T7
14-Pin SO (0.150")
7"
MDP0027
EL2445CS-T13
14-Pin SO (0.150")
13"
MDP0027
Data Sheet
March 27, 2002
2
Pinouts
EL2245
(8-PIN SO, PDIP)
TOP VIEW
EL2445
[14-PIN SO (0.150"), PDIP]
TOP VIEW
1
2
3
4
8
7
6
5
-
+
-
+
OUT
IN1-
IN1+
V-
V+
OUT2
IN2-
IN2+
1
2
3
4
14
13
12
11
5
6
7
10
9
8
OUT1
IN1-
IN1+
V+
OUT4
IN4-
IN4+
V-
IN2+
IN2-
OUT2
IN3+
IN3-
OUT3
-
+
-
+
-
+
-
+
EL2245, EL2445
3
Absolute Maximum Ratings
(T
A
= 25C)
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
) . . . . . . . . . . . . . . -40C to +85C
Operating Junction Temperature (T
J
) . . . . . . . . . . . . . . . . . . +150C
Storage Temperature (T
ST
) . . . . . . . . . . . . . . . . . . . -65C to +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
= 15V, R
L
= 1k
, unless otherwise specified.
PARAMETER
DESCRIPTION
CONDITION
TEMP
MIN
TYP
MAX
UNIT
V
OS
Input Offset Voltage
V
S
= 15V
25C
0.5
4.0
mV
T
MIN
, T
MAX
6.0
mV
TCV
OS
Average Offset Voltage Drift
(Note 1)
All
10.0
V/C
I
B
Input Bias Current
V
S
= 15V
25C
2.8
8.2
A
T
MIN
, T
MAX
9.2
A
V
S
= 5V
25C
2.8
A
I
OS
Input Offset Current
V
S
= 15V
25C
50
300
nA
T
MIN
, T
MAX
400
nA
V
S
= 5V
25C
50
nA
TCI
OS
Average Offset Current Drift
(Note 1)
All
0.3
nA/C
A
VOL
Open-loop Gain
V
S
= 15V,V
OUT
= 10V, R
L
= 1k
25C
1500
3000
V/V
T
MIN
, T
MAX
1500
V/V
V
S
= 5V, V
OUT
= 2.5V, R
L
= 500
25C
2500
V/V
V
S
= 5V, V
OUT
= 2.5V, R
L
= 150
25C
1750
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
= 1k
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
EL2245, EL2445
4
I
S
Supply Current (per amplifier)
V
S
= 15V, no load
25C
5.2
7
mA
T
MIN
7.6
mA
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
NOTE:
1. Measured from T
MIN
to T
MAX
.
Closed-Loop AC Electrical Specifications
V
S
= 15V, A
V
= +2, R
L
= 1k
unless otherwise specified.
PARAMETER
DESCRIPTION
CONDITION
TEMP
MIN
TYP
MAX
UNIT
BW
-3dB Bandwidth
(V
OUT
= 0.4V
PP
)
V
S
= 15V, A
V
= +2
25C
100
MHz
V
S
= 15V, A
V
= -1
25C
75
MHz
V
S
= 15V, A
V
= +5
25C
20
MHz
V
S
= 15V, A
V
= +10
25C
10
MHz
V
S
= 15V, A
V
= +20
25C
5
MHz
V
S
= 5V, A
V
= +2
25C
75
MHz
GBWP
Gain-bandwidth Product
V
S
= 15V
25C
200
MHz
V
S
= 5V
25C
150
MHz
PM
Phase Margin
R
L
= 1 k
, C
L
= 10pF
25C
50
CS
Channel Separation
f = 5MHz
25C
85
dB
SR
Slew Rate (Note 1)
V
S
= 15V, R
L
= 1k
25C
200
275
V/s
V
S
= 5V, R
L
= 500
25C
200
V/s
FPBW
Full-power Bandwidth (Note 2)
V
S
= 15V
25C
3.2
4.4
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
25C
60
ns
dG
Differential Gain (Note 3)
NTSC/PAL
25C
0.02
%
dP
Differential Phase (Note 3)
NTSC/PAL
25C
0.07
eN
Input Noise Voltage
10kHz
25C
15.0
nV/
Hz
iN
Input Noise Current
10kHz
25C
1.50
pA/
Hz
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/(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.
DC Electrical Specifications
V
S
= 15V, R
L
= 1k
, unless otherwise specified. (Continued)
PARAMETER
DESCRIPTION
CONDITION
TEMP
MIN
TYP
MAX
UNIT
EL2245, EL2445
5
Test Circuit
Typical Performance Curves
Non-Inverting
Frequency Response
Inverting Frequency
Response
Frequency Response for
Various Load Resistances
Equivalent Input Noise
Output Voltage Swing
vs Frequency
Open-Loop Gain and
Phase vs Frequency
CMRR, PSRR and Closed-
Loop Output Resistance
vs Frequency
2nd and 3rd Harmonic
Distortion vs Frequency
Settling Time vs
Output Voltage Change
Supply Current vs
Supply Voltage
Common-Mode Input
Range vs Supply Voltage
Output Voltage Range
vs Supply Voltage
EL2245, EL2445
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