®
EL2170, EL2270, EL2470
Data Sheet
November 13, 2002
FN7053
70MHz/1mA Current Mode Feedback
Amplifiers
The EL2170, EL2270, and EL2470 are
single/dual/quad current-feedback
operational amplifiers which achieve a
-3dB bandwidth of 70MHz at a gain of +1 while consuming
only 1mA of supply current per amplifier. They will operate
with dual supplies ranging from ±1.5V to ±6V, or from single
supplies ranging from +3V to +12V. In spite of their low
supply current, the EL2270 and the EL2470 can output
55mA while swinging to ±4V on ±5V supplies. The EL2170
can output 100mA with similar output swings. These
attributes make the EL2170, EL2270, and EL2470 excellent
choices for low power and/or low voltage cable-driver, HDSL,
or RGB applications.
For applications where board space is extremely critical, the
EL2170 is available in the tiny 5-pin SOT-23 package, which
has a footprint 28% the size of an 8-pin SO. The EL2170,
EL2270, and EL2470 are each also available in industry
standard pinouts in PDIP and SO packages.
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
• Single (EL2170), dual (EL2270) & quad (EL2470)
topologies
• 1mA supply current (per amplifier)
• 70MHz -3dB bandwidth
• Tiny SOT23-5 package (EL2170)
• Low cost
• Single- and dual-supply operation down to ±1.5V
• 0.15%/0.15° diff. gain/diff. phase into 150Ω
• 800V/µs slew rate
• Large output drive current - 100mA (EL2170), 55mA
(EL2270), 55mA (EL2470)
• Also available with disable in single (EL2176) & dual
(EL2276)
• Higher speed EL2180/EL2186 family available
(3mA/250MHz) in single, dual, and quad
Applications
• Low power/battery applications
• HDSL amplifiers
• Video amplifiers
• Cable drivers
• RGB amplifiers
• Test equipment amplifiers
• Current to voltage converters
Ordering Information
PART
NUMBER
EL2170CN
EL2170CS
EL2170CS-T7
EL2170CS-T13
EL2170CW-T7
EL2170CW-T3
EL2270CN
EL2270CS
EL2270CS-T7
EL2270CS-T13
EL2470CN
EL2470CS
EL2470CS-T7
EL2470CS-T13
PACKAGE
8-Pin PDIP
8-Pin SO
8-Pin SO
8-Pin SO
5-Pin SOT-23*
5-Pin SOT-23*
8-Pin PDIP
8-Pin SO
8-Pin SO
8-Pin SO
14-Pin PDIP
14-Pin SO
14-Pin SO
14-Pin SO
TAPE & REEL
-
-
7”
13”
7”
13”
-
-
7”
13”
-
-
7”
13”
PKG. NO.
MDP0031
MDP0027
MDP0027
MDP0027
MDP0038
MDP0038
MDP0031
MDP0027
MDP0027
MDP0027
MDP0031
MDP0027
MDP0027
MDP0027
NOTE: *EL2170CW symbol is .Bxxx where xxx represents date
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
|
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.
EL2170, EL2270, EL2470
Absolute Maximum Ratings
(T
A
= 25°C)
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 . . . . . . . . . .-40°C to +85°C
Operating Junction Temperature
Plastic Packages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150°C
Output Current (EL2170) . . . . . . . . . . . . . . . . . . . . . . . . . . . ±120mA
Output Current (EL2270) . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±60mA
Output Current (EL2470) . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±60mA
Storage Temperature Range . . . . . . . . . . . . . . . . . .-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
TCV
OS
dV
OS
+I
IN
d+I
IN
-I
IN
d-I
IN
CMRR
-ICMR
PSRR
-IPSR
R
OL
+R
IN
+C
IN
CMIR
V
O
V
S
= ±5V, R
L
= 150Ω, T
A
= 25°C unless otherwise specified.
CONDITIONS
MIN
TYP
2.5
Measured from T
MIN
to T
MAX
EL2270, EL2470 only
5
0.5
0.5
EL2270, EL2470 only
20
4
EL2270, EL2470 only
V
CM
= ±3.5V
V
CM
= ±3.5V
V
S
is moved from ±4V to ±6V
V
S
is moved from ±4V to ±6V
V
OUT
= ±2.5V
V
CM
= ±3.5V
150
1
60
45
1.5
50
4
70
0.5
400
4
1.2
±3.5
V
S
= ±5
V
S
= 5 single-supply, high
V
S
= 5 single-supply, low
±3.5
±4.0
±4.0
4.0
0.3
80
50
50
100
55
55
1
2
5
10
15
5
MAX
15
UNIT
mV
µV/°C
mV
µA
nA
µA
µA
dB
µA/V
dB
µA/V
kΩ
MΩ
pF
V
V
V
V
mA
mA
mA
mA
DESCRIPTION
Input Offset Voltage
Average Input Offset Voltage Drift
V
OS
Matching
+Input Current
+I
IN
Matching
-Input Current
-I
IN
Matching
Common Mode Rejection Ratio
-Input Current Common Mode
Rejection
Power Supply Rejection Ratio
-Input Current Power Supply
Rejection
Transimpedance
+Input Resistance
+Input Capacitance
Common Mode Input Range
Output Voltage Swing
I
O
Output Current
EL2170 only
EL2270 only, per amplifier
EL2470 only, per amplifier
I
S
Supply Current
Per amplifier
V
S
= ±5V, R
F
= R
G
= 1kΩ, R
L
= 150Ω, T
A
= 25°C unless otherwise specified
CONDITIONS
A
V
= 1
A
V
= 2
V
OUT
= ±2.5V, A
V
= 2
V
OUT
= ±500mV
400
MIN
AC Electrical Specifications
PARAMETER
-3dB BW
-3dB BW
SR
t
R
, t
F
DESCRIPTION
-3dB Bandwidth
-3dB Bandwidth
Slew Rate
Rise and Fall Time
TYP
70
60
800
4.5
MAX
UNIT
MHz
MHz
V/µs
ns
3
Talking
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