EL2227
Dual, Very Low Noise Amplifier
SIG NS
NEW DE
R
DED F O
EM ENT
OMMEN
RE C
R E PL AC
N OT
ENDED
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tersil.co
our Tech
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1-888-IN
DATASHEET
FN7058
Rev 4.00
September 14 ,2010
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 Ld MSOP
package as well as the industry-standard 8 Ld SOIC. It can
operate over the -40°C to +85°C 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 Ld MSOP and 8 Ld SOIC package
• ±2.5V to ±12V operation
• Pb-free available (RoHS compliant)
Applications
• ADSL receivers
• HDSLII receivers
• Ultrasound input amplifiers
Pinout
EL2227
(8 LD SOIC, 8 LD MSOP)
TOP VIEW
VOUTA
VINA-
VINA+
VS-
1
2
3
4
-
+
-
+
5
VINB+
6
VINB-
8
7
VS+
VOUTB
• Wideband instrumentation
• Communications equipment
• AGC and PLL active filters
• Wideband sensors
.
Ordering Information
PART
NUMBER
PART
MARKING
TEMP
RANGE
(°C)
PACKAGE
PKG.
DWG.#
EL2227CYZ* BASAA
(Note)
EL2227CS*
2227CS
-40 to +85 8 Ld MSOP
M8.118A
(3.0mm) (Pb-free)
-40 to +85 8 Ld SOIC
(150 mil)
M8.15E
EL2227CSZ* 2227CSZ
(Note)
-40 to +85 8 Ld SOIC
M8.15E
(150 mil) (Pb-free)
*Add “-T7” or “-T13” suffix for tape and reel. Please refer to TB347 for
details on reel specifications.
NOTE: These Intersil Pb-free plastic packaged products employ
special Pb-free material sets, molding compounds/die attach
materials, and 100% matte tin plate plus anneal (e3 termination
finish, which is 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.
FN7058 Rev 4.00
September 14 ,2010
Page 1 of 14
EL2227
Absolute Maximum Ratings
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 . . . . . . . . . . . . . . . . . . . . . . . . . . +150°C
ESD Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2kV
Thermal Information
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Operating Temperature . . . . . . . . . . . . . . . . . . . . . . .-40°C to +85°C
Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Curves
Pb-Free Reflow Profile. . . . . . . . . . . . . . . . . . . . . . . . .see link below
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and
result in failures not covered by warranty.
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
PARAMETER
INPUT CHARACTERISTICS
V
OS
TCV
OS
I
B
R
IN
C
IN
CMIR
CMRR
A
VOL
e
N
i
N
V
S
+ = +12V, V
S
- = -12V, R
L
= 500 and C
L
= 3pF to 0V, R
F
= R
G
= 620, and T
A
= +25°C, Unless Otherwise
Specified.
DESCRIPTION
CONDITION
MIN
TYP
MAX
UNIT
Input Offset Voltage
Average Offset Voltage Drift
Input Bias Current
Input Impedance
Input Capacitance
Common-Mode Input Range
Common-Mode Rejection Ratio
Open-Loop Gain
Voltage Noise
Current Noise
V
CM
= 0V
-0.2
-0.6
3
mV
µV/°C
µA
M
pF
V
CM
= 0V
-9
-3.4
7.3
1.6
-11.8
For V
IN
from -11.8V to 10.4V
-5V
V
OUT
5V
f = 100kHz
f = 100kHz
60
70
94
87
1.9
1.2
+10.4
V
dB
dB
nV/Hz
pA/Hz
OUTPUT CHARACTERISTICS
V
OL
Output Swing Low
R
L
= 500
R
L
= 250
V
OH
Output Swing High
R
L
= 500
R
L
= 250
I
SC
Short Circuit Current
R
L
= 10
10
9.5
140
-10.4
-9.8
10.4
10
180
-10
-9
V
V
V
V
mA
POWER SUPPLY PERFORMANCE
PSRR
I
S
V
S
Power Supply Rejection Ratio
Supply Current (Per Amplifier)
Operating Range
V
S
is moved from ±2.25V to ±12V
No Load
±2.5
65
95
4.8
6.5
±12
dB
mA
V
DYNAMIC PERFORMANCE
SR
t
S
BW
HD2
Slew Rate (Note 2)
Settling to 0.1% (A
V
= +2)
-3dB Bandwidth
2nd Harmonic Distortion
±2.5V square wave, measured 25% to 75%
(A
V
= +2), V
O =
±1V
R
F
= 358
f = 1MHz, V
O
= 2V
P-P
, R
L
= 500, R
F
= 358
f = 1MHz, V
O
= 2V
P-P
, R
L
= 150, R
F
= 358
HD3
3rd Harmonic Distortion
f = 1MHz, V
O
= 2V
P-P
, R
L
= 500, R
F
= 358
f = 1MHz, V
O
= 2V
P-P
, R
L
= 150, R
F
= 358
40
50
65
115
93
83
94
76
V/µs
ns
MHz
dBc
dBc
dBc
dBc
FN7058 Rev 4.00
September 14 ,2010
Page 2 of 14
EL2227
Electrical Specifications
PARAMETER
INPUT CHARACTERISTICS
V
OS
TCV
OS
I
B
R
IN
C
IN
CMIR
CMRR
A
VOL
e
N
i
N
Input Offset Voltage
Average Offset Voltage Drift
Input Bias Current
Input Impedance
Input Capacitance
Common-Mode Input Range
Common-Mode Rejection Ratio
Open-Loop Gain
Voltage Noise
Current Noise
For V
IN
from -4.8V to 3.4V
-5V
V
OUT
5V
f = 100kHz
f = 100kHz
-4.8
60
70
97
84
1.9
1.2
V
CM
= 0V
-9
V
CM
= 0V
0.2
-0.6
-3.7
7.3
1.6
3.4
3
mV
µV/°C
µA
M
pF
V
dB
dB
nV/Hz
pA/Hz
V
S
+ = +5V, V
S
- = -5V, R
L
= 500 and C
L
= 3pF to 0V, R
F
= R
G
= 620, and T
A
= +25°C, Unless Otherwise
Specified.
DESCRIPTION
CONDITION
MIN
TYP
MAX
UNIT
OUTPUT CHARACTERISTICS
V
OL
Output Swing Low
R
L
= 500
R
L
= 250
V
OH
Output Swing High
R
L
= 500
R
L
= 250
I
SC
Short Circuit Current
R
L
= 10
3.5
3.5
60
-3.8
-3.7
3.7
3.6
100
-3.5
-3.5
V
V
V
V
mA
POWER SUPPLY PERFORMANCE
PSRR
I
S
V
S
Power Supply Rejection Ratio
Supply Current (Per Amplifier)
Operating Range
V
S
is moved from ±2.25V to ±12V
No Load
±2.5
65
95
4.5
5.5
±12
dB
mA
V
DYNAMIC PERFORMANCE
SR
t
S
BW
HD2
Slew Rate
Settling to 0.1% (A
V
= +2)
-3dB Bandwidth
2nd Harmonic Distortion
±2.5V square wave, measured 25% to 75%
(A
V
= +2), V
O =
±1V
R
F
= 358
f = 1MHz, V
O
= 2V
P-P
, R
L
= 500, R
F
= 358
f = 1MHz, V
O
= 2V
P-P
, R
L
= 150, R
F
= 358
HD3
3rd Harmonic Distortion
f = 1MHz, V
O
= 2V
P-P
, R
L
= 500, R
F
= 358
f = 1MHz, V
O
= 2V
P-P
, R
L
= 150, R
F
= 358
35
45
77
90
98
90
94
79
V/µs
ns
MHz
dBc
dBc
dBc
dBc
FN7058 Rev 4.00
September 14 ,2010
Page 3 of 14
EL2227
Typical Performance Curves
4
NORMALIZED GAIN (dB)
NORMALIZED GAIN (dB)
3
2
1
0
-1
-2
-3
-4
-5
-6
1M
V
S
= ±12V
A
V
= +2
R
L
= 500
10M
FREQUENCY (Hz)
100M 200M
R
F
= 100
R
F
= 350
R
F
= 1k
R
F
= 620
4
3
2
1
0
-1
-2
-3
-4
-5
-6
1M
V
S
= ±12V
A
V
= -1
R
L
= 500
10M
FREQUENCY (Hz)
R
F
= 420
R
F
= 620
R
F
= 1k
R
F
= 100
R
F
= 350
100M 200M
FIGURE 1. NON-INVERTING FREQUENCY RESPONSE FOR
VARIOUS RF
FIGURE 2. INVERTING FREQUENCY RESPONSE FOR
VARIOUS R
F
4
NORMALIZED GAIN (dB)
NORMALIZED GAIN (dB)
3
2
1
0
-1
-2
-3
-4
-5
-6
1M
V
S
= ±12V
R
F
= 350
R
L
= 500
10M
FREQUENCY (Hz)
100M 200M
A
V
= 10
A
V
= 5
A
V
= 2
4
3
2
1
0
-1
-2
-3
-4
-5
-6
1M
A
V
= -10
A
V
= -5
V
S
= ±12V
R
F
= 420
R
L
= 500
10M
FREQUENCY (Hz)
100M 200M
A
V
= -2
A
V
= -1
FIGURE 3. NON-INVERTING FREQUENCY RESPONSE
(GAIN)
FIGURE 4. INVERTING FREQUENCY RESPONSE (GAIN)
135
90
45
0
PHASE (°)
-45
-90
-135
-180
-225
-270
-315
1M
V
S
= ±12
R
F
= 350
R
L
= 500
10M
FREQUENCY (Hz)
100M200M
A
V
= 10
A
V
= 5
PHASE (°)
A
V
= 2
135
90
45
0
-45
-90
-135
-180
-225
-270
-315
1M
V
S
= ±12V
R
F
= 420
R
L
= 500
10M
FREQUENCY (Hz)
100M 200M
A
V
= -1
A
V
= -10
A
V
= -5
A
V
= -2
FIGURE 5. NON-INVERTING FREQUENCY RESPONSE
(PHASE)
FIGURE 6. INVERTING FREQUENCY RESPONSE (PHASE)
FN7058 Rev 4.00
September 14 ,2010
Page 4 of 14
EL2227
Typical Performance Curves
(Continued)
4
NORMALIZED GAIN (dB)
3
2
1
0
-1
-2
-3
-4
-5
-6
100k
V
IN
= 500mV
P-P
V
IN
= 1V
P-P
V
IN
= 2V
P-P
1M
10M
100M
NORMALIZED GAIN (dB)
V
S
= ±12V
R
F
= 350
V
IN
= 20mV
P-P
A
V
= +2
R
L
= 500 V
IN
= 100mV
P-P
4
3
2
1
0
-1
-2
-3
-4
-5
-6
1M
V
IN
= 2.8V
P-P
V
S
±12V
R
F
= 420
R
L
= 500
A
V
= -1
10M
FREQUENCY (Hz)
V
IN
= 280mV
P-P
V
IN
= 1.4V
P-P
V
IN
= 20mV
P-P
100M 200M
FREQUENCY (Hz)
FIGURE 7. NON-INVERTING FREQUENCY RESPONSE FOR
VARIOUS INPUT SIGNAL LEVELS
FIGURE 8. INVERTING FREQUENCY RESPONSE FOR
VARIOUS INPUT SIGNAL LEVELS
5
NORMALIZED GAIN (dB)
3
2
1
0
-1
V = ±12V
-2 V
S
=±1
S
R
F
= 620
-3 2V = 500
R
L
-4 R
F
=62
A = +2
V
4
NORMALIZED GAIN (dB)
C
L
= 30pF
C
L
= 12pF
3
2
1
0
-1
-2
-3
-4
-5
-6
1M
V
S
± 12V
R
F
= 420
R
L
= 500
A
V
= -1
10M
FREQUENCY (Hz)
100M 200M
C
L
= 2pF
C
L
= 30pF
C
L
= 12pF
4
C
L
= 2pF
-5
1M
10M
FREQUENCY (Hz)
100M 200M
FIGURE 9. NON-INVERTING FREQUENCY RESPONSE FOR
VARIOUS C
L
FIGURE 10. INVERTING FREQUENCY RESPONSE FOR
VARIOUS C
L
4
NORMALIZED GAIN (dB)
3
2
1
0
-1
-2
-3
-4
-5
-6
1M
V
S
= ±12V
R
F
= 620
C
L
= 15pF
A
V
= +2
10M
FREQUENCY (Hz)
R
L
= 50
R
L
= 100
R
L
= 500
NORMALIZED GAIN (dB)
4
3
2
1
0
-1
-2
-3
-4
-5
V
S
= ±12V
R
F
= 620
R
L
= 500
A
V
= +2
1M
V
O
= 0V
V
O
= -5V
V
O
= +10V
V
O
= -10V
V
O
= +5V
100M 200M
-6
100k
10M
100M
FREQUENCY (Hz)
FIGURE 11. NON-INVERTING FREQUENCY RESPONSE FOR
VARIOUS R
L
FIGURE 12. FREQUENCY RESPONSE FOR VARIOUS OUTPUT
DC LEVELS
FN7058 Rev 4.00
September 14 ,2010
Page 5 of 14
