1
FN7053.1
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 2002 Elantec Semiconductor, Inc. 2002-2004 Intersil Americas Inc. All Rights Reserved. Elantec is a registered trademark of Elantec Semiconductor, Inc.
All other trademarks mentioned are the property of their respective owners.
EL2270
70MHz/1mA Current Mode Feedback
Amplifiers
The EL2270 is a dual current-feedback
operational amplifiers which achieves
a -3dB bandwidth of 70MHz at a gain
of +1 while consuming only 1mA of supply current per
amplifier. It will operate with dual supplies ranging from
1.5V to 6V, or from single supplies ranging from +3V to
+12V. In spite of its low supply current, the EL2270 can
output 55mA while swinging to 4V on 5V supplies. These
attributes make the EL2270 an excellent choice for low
power and/or low voltage cable-driver, HDSL, or RGB
applications.
For applications where board space is extremely critical. The
EL2270 is available in industry standard pinouts in SO
package.
For single and dual applications with disable, consider the
EL2176 (8-pin single) or EL2276 (14-pin dual). For higher
speed applications where power is still a concern, consider
the EL2180/EL2186 family which also comes in similar
single, dual, triple and quad configurations. The
EL2180/EL2186 family provides a -3dB bandwidth of
250MHz while consuming 3mA of supply current per
amplifier.
Features
Dual topologies
1mA supply current (per amplifier)
70MHz -3dB bandwidth
Low cost
Single- and dual-supply operation down to 1.5V
0.15%/0.15 diff. gain/diff. phase into 150
800V/s slew rate
Large output drive current - 55mA
Also available with disable in single (EL2176) & dual
(EL2276)
Higher speed EL2180/EL2186 family available
(3mA/250MHz) in single, dual, and quad
Pb-free available
Applications
Low power/battery applications
HDSL amplifiers
Video amplifiers
Cable drivers
RGB amplifiers
Test equipment amplifiers
Current to voltage converters
Pinout
EL2270
(8-PIN SO)
TOP VIEW
Ordering Information
PART
NUMBER
PACKAGE
TAPE & REEL PKG. DWG. #
EL2270CS
8-Pin SO
-
MDP0027
EL2270CS-T7
8-Pin SO
7"
MDP0027
EL2270CS-T13
8-Pin SO
13"
MDP0027
EL2270CSZ
(See Note)
8-Pin SO
(Pb-free)
-
MDP0027
EL2270CSZ-T7
(See Note)
8-Pin SO
(Pb-free)
7"
MDP0027
EL2270CSZ-
T13 (See Note)
8-Pin SO
(Pb-free)
13"
MDP0027
NOTE: Intersil Pb-free products employ special Pb-free material
sets; molding compounds/die attach materials and 100% matte tin
plate termination finish, which is 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-020B.
Data Sheet
July 13, 2004
2
Absolute Maximum Ratings
(T
A
= 25C)
Voltage between V
S
+ and V
S
- . . . . . . . . . . . . . . . . . . . . . . . . +12.6V
Common-Mode Input Voltage . . . . . . . . . . . . . . . . . . . . . V
S
- to V
S
+
Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6V
Current into +IN or -IN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7.5mA
Internal Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . See Curves
Operating Ambient Temperature Range . . . . . . . . . .-40C to +85C
Operating Junction Temperature
Plastic Packages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150C
Output Current (EL2270) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60mA
Storage Temperature Range . . . . . . . . . . . . . . . . . . -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
= 5V, R
L
= 150
,
T
A
= 25C unless otherwise specified.
PARAMETER
DESCRIPTION
CONDITIONS
MIN
TYP
MAX
UNIT
V
OS
Input Offset Voltage
2.5
15
mV
TCV
OS
Average Input Offset Voltage Drift
Measured from T
MIN
to T
MAX
5
V/C
dV
OS
V
OS
Matching
0.5
mV
+I
IN
+Input Current
0.5
5
A
d+I
IN
+I
IN
Matching
20
nA
-I
IN
-Input Current
4
15
A
d-I
IN
-I
IN
Matching
1.5
A
CMRR
Common Mode Rejection Ratio
V
CM
= 3.5V
45
50
dB
-ICMR
-Input Current Common Mode
Rejection
V
CM
= 3.5V
4
10
A/V
PSRR
Power Supply Rejection Ratio
V
S
is moved from 4V to 6V
60
70
dB
-IPSR
-Input Current Power Supply
Rejection
V
S
is moved from 4V to 6V
0.5
5
A/V
R
OL
Transimpedance
V
OUT
= 2.5V
150
400
k
+R
IN
+Input Resistance
V
CM
= 3.5V
1
4
M
+C
IN
+Input Capacitance
1.2
pF
CMIR
Common Mode Input Range
3.5
4.0
V
V
O
Output Voltage Swing
V
S
= 5
3.5
4.0
V
V
S
= 5 single-supply, high
4.0
V
V
S
= 5 single-supply, low
0.3
V
I
O
Output Current
Per amplifier
50
55
mA
I
S
Supply Current
Per amplifier
1
2
mA
AC Electrical Specifications
V
S
= 5V, R
F
= R
G
= 1k
, R
L
= 150
, T
A
= 25C unless otherwise specified
PARAMETER
DESCRIPTION
CONDITIONS
MIN
TYP
MAX
UNIT
-3dB BW
-3dB Bandwidth
A
V
= 1
70
MHz
-3dB BW
-3dB Bandwidth
A
V
= 2
60
MHz
SR
Slew Rate
V
OUT
= 2.5V, A
V
= 2
400
800
V/s
t
R
, t
F
Rise and Fall Time
V
OUT
= 500mV
4.5
ns
t
PD
Propagation Delay
V
OUT
= 500mV
4.5
ns
OS
Overshoot
V
OUT
= 500mV
3.0
%
EL2270
3
Test Circuit
(per Amplifier)
Simplified Schematic
(per Amplifier)
t
S
0.1% Settling
V
OUT
= 2.5V, A
V
= -1
40
ns
dG
Differential Gain
A
V
= 2, R
L
= 150
(Note 1)
0.15
%
dP
Differential Phase
A
V
= 2, R
L
= 150
(Note 1)
0.15
dG
Differential Gain
A
V
= 1, R
L
= 500
(Note 1)
0.02
%
dP
Differential Phase
A
V
= 1, R
L
= 500
(Note 1)
0.01
C
S
Channel Separation
EL2270 only, f = 5MHz
85
dB
NOTE:
1. DC offset from 0V to 0.714V, AC amplitude 286mV
P-P
, f = 3.58MHz.
AC Electrical Specifications
V
S
= 5V, R
F
= R
G
= 1k
, R
L
= 150
, T
A
= 25C unless otherwise specified (Continued)
PARAMETER
DESCRIPTION
CONDITIONS
MIN
TYP
MAX
UNIT
EL2270
4
Typical Performance Curves
Non-Inverting
Frequency Response (Gain)
Non-Inverting
Frequency Response (Phase)
Frequency Response for
Various R
F
and R
G
Inverting Frequency
Response (Gain)
Inverting Frequency
Response (Phase)
Frequency Response for
Various R
L
and C
L
Transimpedance (R
OL
)
PSRR and CMRR
Frequency Response
for Various C
IN-
EL2270
5
Typical Performance Curves
(Continued)
Voltage and Current
Noise vs Frequency
2nd and 3rd Harmonic
Distortion vs Frequency
FOutput Voltage
vs Frequency
Output Voltage Swing
vs Supply Voltage
-3dB Bandwidth and Peaking
vs Supply Voltage for
Various Inverting Gains
-3dB Bandwidth and Peaking
vs Supply Voltage for
Various Non-Inverting Gains
Supply Current vs
Supply Voltage
Common-Mode Input Range
vs Supply Voltage
Slew Rate vs
Supply Voltage
EL2270
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