1
FN7058.2
EL2227
Dual Very Low Noise Amplifier
The EL2227 is a dual, low-noise amplifier, ideally suited to
line receiving applications in ADSL and HDSLII designs.
With low noise specification of just 1.9nV/
Hz and
1.2pA/
Hz, the EL2227 is perfect for the detection of very
low amplitude signals.
The EL2227 features a -3dB bandwidth of 115MHz and is
gain-of-2 stable. The EL2227 also affords minimal power
dissipation with a supply current of just 4.8mA per amplifier.
The amplifier can be powered from supplies ranging from
2.5V to 12V.
The EL2227 is available in a space-saving 8-pin MSOP
package as well as the industry-standard 8-pin SO. It can
operate over the -40C to +85C temperature range.
Features
Voltage noise of only 1.9nV/
Hz
Current noise of only 1.2pA/
Hz
Bandwidth (-3dB) of 115MHz @A
V
= +2
Gain-of-2 stable
Just 4.8mA per amplifier
8-pin MSOP package
2.5V to 12V operation
Pb-Free available (RoHS compliant)
Applications
ADSL receivers
HDSLII receivers
Ultrasound input amplifiers
Wideband instrumentation
Communications equipment
AGC & PLL active filters
Wideband sensors
Pinout
EL2227
(8-PIN SO, MSOP)
TOP VIEW
Ordering Information
PART NUMBER
PACKAGE
TAPE & REEL
PKG.
DWG.#
EL2227CY
8-Pin MSOP
-
MDP0043
EL2227CY-T13
8-Pin MSOP
13"
MDP0043
EL2227CY-T7
8-Pin MSOP
7"
MDP0043
EL2227CYZ
(See Note)
8-Pin MSOP
(Pb-free)
-
MDP0043
EL2227CYZ-T13
(See Note)
8-Pin MSOP
(Pb-free)
13"
MDP0043
EL2227CYZ-T7
(See Note)
8-Pin MSOP
(Pb-free)
7"
MDP0043
EL2227CS
8-Pin SO
-
MDP0027
EL2227CS-T13
8-Pin SO
13"
MDP0027
EL2227CS-T7
8-Pin SO
7"
MDP0027
EL2227CSZ
(See Note)
8-Pin SO
(Pb-free)
-
MDP0027
EL2227CSZ-T13
(See Note)
8-Pin SO
(Pb-free)
13"
MDP0027
EL2227CSZ-T7
(See Note)
8-Pin SO
(Pb-free)
7"
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 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.
1
2
3
4
8
7
6
5
-
+
-
+
VS
-
VS+
VINA+
VINA-
VOUTA
VOUTB
VINB-
VINB+
Data Sheet
April 26, 2005
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-352-6832
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2004, 2005. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
2
Absolute Maximum Ratings
(T
A
= 25C)
Supply Voltage between V
S
+ and V
S
-. . . . . . . . . . . . . . . . . . . . .28V
Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . V
S
- - 0.3V, V
S
+0.3V
Maximum Continuous Output Current . . . . . . . . . . . . . . . . . . . 40mA
Maximum Die Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . 150C
Storage Temperature. . . . . . . . . . . . . . . . . . . . . . . .-65C to +150C
Operating Temperature . . . . . . . . . . . . . . . . . . . . . . .-40C to +85C
Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Curves
ESD Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2kV
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
Electrical Specifications
V
S
+ = +12V, V
S
- = -12V, R
L
= 500
and C
L
= 3pF to 0V, R
F
= R
G
= 620
, and T
A
= 25C unless otherwise
specified.
PARAMETER
DESCRIPTION
CONDITION
MIN
TYP
MAX
UNIT
INPUT CHARACTERISTICS
V
OS
Input Offset Voltage
V
CM
= 0V
-0.2
3
mV
TCV
OS
Average Offset Voltage Drift
-0.6
V/C
I
B
Input Bias Current
V
CM
= 0V
-9
-3.4
A
R
IN
Input Impedance
7.3
M
C
IN
Input Capacitance
1.6
pF
CMIR
Common-Mode Input Range
-11.8
+10.4
V
CMRR
Common-Mode Rejection Ratio
for V
IN
from -11.8V to 10.4V
60
94
dB
A
VOL
Open-Loop Gain
-5V
V
OUT
5V
70
87
dB
e
N
Voltage Noise
f = 100kHz
1.9
nV/
Hz
i
N
Current Noise
f = 100kHz
1.2
pA/
Hz
OUTPUT CHARACTERISTICS
V
OL
Output Swing Low
R
L
= 500
-10.4
-10
V
R
L
= 250
-9.8
-9
V
V
OH
Output Swing High
R
L
= 500
10
10.4
V
R
L
= 250
9.5
10
V
I
SC
Short Circuit Current
R
L
= 10
140
180
mA
POWER SUPPLY PERFORMANCE
PSRR
Power Supply Rejection Ratio
V
S
is moved from 2.25V to 12V
65
95
dB
I
S
Supply Current (Per Amplifier)
No Load
4.8
6.5
mA
V
S
Operating Range
2.5
12
V
DYNAMIC PERFORMANCE
SR
Slew Rate (Note 2)
2.5V square wave, measured 25%-75%
40
50
V/S
t
S
Settling to 0.1% (A
V
= +2)
(A
V
= +2), V
O =
1V
65
ns
BW
-3dB Bandwidth
R
F
= 358
115
MHz
HD2
2nd Harmonic Distortion
f = 1MHz, V
O
= 2V
P-P
, R
L
= 500
, R
F
= 358
93
dBc
f = 1MHz, V
O
= 2V
P-P
, R
L
= 150
, R
F
= 358
83
dBc
HD3
3rd Harmonic Distortion
f = 1MHz, V
O
= 2V
P-P
, R
L
= 500
, R
F
= 358
94
dBc
f = 1MHz, V
O
= 2V
P-P
, R
L
= 150
, R
F
= 358
76
dBc
EL2227
3
Electrical Specifications
V
S
+ = +12V, V
S
- = -12V, R
L
= 500
and C
L
= 3pF to 0V, R
F
= R
G
= 620
, and T
A
= 25C unless otherwise
specified.
PARAMETER
DESCRIPTION
CONDITION
MIN
TYP
MAX
UNIT
INPUT CHARACTERISTICS
V
OS
Input Offset Voltage
V
CM
= 0V
0.2
3
mV
TCV
OS
Average Offset Voltage Drift
-0.6
V/C
I
B
Input Bias Current
V
CM
= 0V
-9
-3.7
A
R
IN
Input Impedance
7.3
M
C
IN
Input Capacitance
1.6
pF
CMIR
Common-Mode Input Range
-4.8
3.4
V
CMRR
Common-Mode Rejection Ratio
for V
IN
from -4.8V to 3.4V
60
97
dB
A
VOL
Open-Loop Gain
-5V
V
OUT
5V
70
84
dB
e
N
Voltage Noise
f = 100kHz
1.9
nV/
Hz
i
N
Current Noise
f = 100kHz
1.2
pA/
Hz
OUTPUT CHARACTERISTICS
V
OL
Output Swing Low
R
L
= 500
-3.8
-3.5
V
R
L
= 250
-3.7
-3.5
V
V
OH
Output Swing High
R
L
= 500
3.5
3.7
V
R
L
= 250
3.5
3.6
V
I
SC
Short Circuit Current
R
L
= 10
60
100
mA
POWER SUPPLY PERFORMANCE
PSRR
Power Supply Rejection Ratio
V
S
is moved from 2.25V to 12V
65
95
dB
I
S
Supply Current (Per Amplifier)
No Load
4.5
5.5
mA
V
S
Operating Range
2.5
12
V
DYNAMIC PERFORMANCE
SR
Slew Rate
2.5V square wave, measured 25%-75%
35
45
V/S
t
S
Settling to 0.1% (A
V
= +2)
(A
V
= +2), V
O =
1V
77
ns
BW
-3dB Bandwidth
R
F
= 358
90
MHz
HD2
2nd Harmonic Distortion
f = 1MHz, V
O
= 2V
P-P
, R
L
= 500
, R
F
= 358
98
dBc
f = 1MHz, V
O
= 2V
P-P
, R
L
= 150
, R
F
= 358
90
dBc
HD3
3rd Harmonic Distortion
f = 1MHz, V
O
= 2V
P-P
, R
L
= 500
, R
F
= 358
94
dBc
f = 1MHz, V
O
= 2V
P-P
, R
L
= 150
, R
F
= 358
79
dBc
EL2227
4
Typical Performance Curves
Non-inverting Frequency Response for Various R
F
4
3
2
1
0
-1
-2
-3
-4
-5
-6
1M
10M
100M
Frequency (Hz)
N
o
r
m
a
li
z
e
d
Ga
i
n
(d
B
)
200M
V
S
=12V
A
V
=+2
R
L
=500
R
F
=620
R
F
=350
R
F
=100
R
F
=1k
Inverting Frequency Response for Various R
F
4
3
2
1
0
-1
-2
-3
-4
-5
-6
1M
10M
100M
Frequency (Hz)
N
o
r
m
a
li
z
e
d
Ga
i
n
(d
B
)
200M
V
S
=12V
A
V
=-1
R
L
=500
Inverting Frequency Response (Gain)
4
3
2
1
0
-1
-2
-3
-4
-5
-6
1M
10M
100M
Frequency (Hz)
Norm
alize
d
Ga
in (
d
B
)
200M
V
S
=12V
R
F
=420
R
L
=500
Non-inverting Frequency Response (Gain)
4
3
2
1
0
-1
-2
-3
-4
-5
-6
1M
10M
100M
Frequency (Hz)
Norm
alize
d
Ga
in (
d
B
)
200M
Inverting Frequency Response (Phase)
135
90
45
0
-45
-90
-135
-180
-225
-270
-315
1M
10M
100M
Frequency (Hz)
Ph
a
s
e (
)
200M
V
S
=12V
R
F
=420
R
L
=500
R
F
=420
R
F
=350
R
F
=100
R
F
=1k
R
F
=620
V
S
=12V
R
F
=350
R
L
=500
A
V
=2
A
V
=5
A
V
=10
A
V
=-10
A
V
=-5
A
V
=-2
A
V
=-1
A
V
=-10
A
V
=-5
A
V
=-2
A
V
=-1
Non-inverting Frequency Response (Phase)
135
90
45
0
-45
-90
-135
-180
-225
-270
-315
1M
10M
Frequency (Hz)
Ph
a
s
e (
)
100M 200M
V
S
=12
R
F
=350
R
L
=500
A
V
=10
A
V
=2
A
V
=5
Non-inverting Frequency Response for Various
Input Signal Levels
4
3
2
1
0
-1
-2
-3
-4
-5
-6
100k
1M
10M
Frequency (Hz)
Norma
lize
d
Gai
n
(dB)
100M
V
S
=12V
R
F
=350
A
V
=+2
R
L
=500
V
IN
=500mV
PP
V
IN
=100mV
PP
V
IN
=20mV
PP
V
IN
=1V
PP
V
IN
=2V
PP
Inverting Frequency Response for Various Input
Signal Levels
4
3
2
1
0
-1
-2
-3
-4
-5
-6
1M
10M
100M
Frequency (Hz)
Norma
lize
d
Gai
n
(dB)
200M
V
S
=12V
R
F
=420
R
L
=500
A
V
=-1
V
IN
=20mV
PP
V
IN
=280mV
PP
V
IN
=1.4V
PP
V
IN
=2.8V
PP
EL2227
5
Typical Performance Curves
(Continued)
Non-inverting Frequency Response for Various R
L
4
3
2
1
0
-1
-2
-3
-4
-5
-6
1M
10M
100M
Frequency (Hz)
Norma
lized Gai
n
(dB)
200M
Inverting Frequency Response for Various C
L
4
3
2
1
0
-1
-2
-3
-4
-5
-6
1M
10M
100M
Frequency (Hz)
N
o
rm
alize
d
Ga
in (
d
B)
200M
Non-inverting Frequency Response for Various C
L
5
4
3
2
1
0
-1
-2
-3
-4
-5
1M
10M
100M
Frequency (Hz)
N
o
rm
alize
d
Ga
in (
d
B)
200M
R
L
=50
R
L
=100
R
L
=500
V
S
=12
V
R
F
=620
V
S
=12V
R
F
=620
C
L
=15pF
A
V
=+2
C
L
=30pF
C
L
=12pF
C
L
=2pF
V
S
=12V
R
F
=420
R
L
=500
A
V
=-1
C
L
=30pF
C
L
=12pF
C
L
=2pF
Frequency Response for Various Output DC
Levels
4
3
2
1
0
-1
-2
-3
-4
-5
-6
100k
1M
10M
Frequency (Hz)
Norma
lized Gai
n
(dB)
V
S
=12V
R
F
=620
R
L
=500
A
V
=+2
V
O
=+10V
V
O
=-10V
V
O
=+5V
V
O
=0V
V
O
=-5V
100M
Peaking vs Supply Voltage
4
3.5
3
2.5
2
1.5
1
0.5
0
2
4
8
Supply Voltage (V)
P
eak
ing (
d
B
)
12
6
10
A
V
=+2
R
F
=620
R
L
=500
A
V
=-1
A
V
=-2
A
V
=+2
A
V
=+1
A
V
=-10
A
V
=-5
A
V
=+5
3dB Bandwidth vs Supply Voltage
140
120
100
80
60
40
20
0
2
4
8
Supply Voltage (V)
3dB Ba
ndw
i
d
th (MH
z)
12
6
10
A
V
=+2
R
F
=620
R
L
=500
A
V
=-1
A
V
=+2
A
V
=-2
A
V
=+5
A
V
=-5
A
V
=-10
A
V
=+10
100ns/div
0.5V/div
Large Signal Step Response
V
S
=2.5V
Large Signal Step Response
V
S
=12V
100ns/div
0.5V/div
R
F
=620
A
V
=2
R
L
=500
R
F
=620
A
V
=2
R
L
=500
V
S
=12V
R
F
=620
R
L
=500
A
V
=+2
EL2227
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