ELANT EL2227CY-T7, EL2227CY-T13, EL2227CS-T7, EL2227CS-T13, EL2227CS Datasheet
EL2227C
Dual Very Low Noise Amplifier
EL2227C
Features
• Voltage noise of only 1.9nV/√Hz
• Current noise of only 1.2pA/√Hz
• Bandwidth (-3dB) of 115MHz
@AV = +2
• Gain-of-2 stable
• Just 4.8mA per amplifier
• 8-pin MSOP package
• ±2.5V to ±12V operation
Applications
• ADSL receivers
• HDSLII receivers
• Ultrasound input amplifiers
• Wideband instrumentation
• Communications equipment
• AGC & PLL active filters
• Wideband sensors
Ordering Information
Part No. Package Tape & Reel Outline #
EL2227CY 8-Pin MSOP - MDP0043
EL2227CY-T13 8-Pin MSOP 13” MDP0043
EL2227CY-T7 8-Pin MSOP 7” MDP0043
EL2227CS 8-Pin SO - MDP0027
EL2227CS-T13 8-Pin SO 13” MDP0027
EL2227CS-T7 8-Pin SO 7” MDP0027
General Description
The EL2227C 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 EL2227C is perfect for the detection of very low amplitude signals.
The EL2227C features a -3dB bandwidth of 115MHz and is gain-of-2
stable. The EL2227C 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 EL2227C is available in a space-saving 8-pin MSOP package as
well as the industry-standard 8-pin SO. It can operate over the -40°C
to +85°C temperature range.
Connection Diagram
1
VOUTA
2
VINA-
VINA+
Note: All information contained in this data sheet has been carefully checked and is believed to be accurate as of the date of publication; however, this data sheet cannot be a “controlled document”. Current revisions, if any, to these
specifications are maintained at the factory and are available upon your request. We recommend checking the revision level before finalization of your design documentation.
© 2001 Elantec Semiconductor, Inc.
+
3
4
VS-
EL2227C
(8-Pin SO and 8-Pin MSOP)
8
VS+
7
VOUTB
65-
VINB-
+
VINB+
August 3, 2001
EL2227C
Dual Very Low Noise Amplifier
EL2227C
Absolute Maximum Ratings (T
Values beyond absolute maximum ratings can cause the device to be prematurely damaged. Absolute maximum ratings are stress ratings only
and functional device operation is not implied
Supply Voltage between VS+ and VS- 28V
Input Voltage VS- - 0.3V, VS +0.3V
Maximum Continuous Output Current 40mA
Important Note:
All parameters having Min/Max specifications are guaranteed. Typ values are for information purposes only. Unless otherwise noted, all tests are at the
specified temperature and are pulsed tests, therefore: TJ = TC = TA.
= 25°C)
A
Maximum Die Temperature 150°C
Storage Temperature -65°C to +150°C
Operating Temperature -40°C to +85°C
Power Dissipation See Curves
ESD Voltage 2kV
Electrical Characteristics
VS+ = +12V, VS - = -12V, RL = 500Ω and CL = 3pF to 0V, RF = RG = 620Ω, and TA = 25°C unless otherwise specified.
Parameter Description Condition Min Typ Max Unit
Input Characteristics
V
OS
TCV
I
B
R
IN
C
IN
CMIR Common-Mode Input Range -11.8 +10.4 V
CMRR Common-Mode Rejection Ratio for VIN from -11.8V to 10.4V 60 94 dB
A
VOL
e
n
i
n
Output Characteristics
V
OL
V
OH
I
SC
Power Supply Performance
PSRR Power Supply Rejection Ratio VS is moved from ±2.25V to ±12V 65 95 dB
I
S
V
S
Dynamic Performance
SR Slew Rate
t
S
BW -3dB Bandwidth RF = 358Ω 115 MHz
HD2 2nd Harmonic Distortion f = 1MHz, VO = 2V
HD3 3rd Harmonic Distortion f = 1MHz, VO = 2V
Input Offset Voltage V
Average Offset Voltage Drift
OS
Input Bias Current V
Input Impedance 7.3 MΩ
Input Capacitance 1.6 pF
Open-Loop Gain -5V ≤ V
Voltage Noise f = 100kHz 1.9 nV/√Hz
Current Noise f = 100kHz 1.2 pA/√Hz
Output Swing Low RL = 500Ω -10.4 -10 V
Output Swing High RL = 500Ω 10 10.4 V
Short Circuit Current RL = 10Ω 140 180 mA
Supply Current (Per Amplifier) No Load 4.8 6.5 mA
Operating Range ±2.5 ±12 V
[2]
Settling to 0.1% (AV = +2) (AV = +2), V
= 0V -0.2 3 mV
CM
[1]
= 0V -9 -3.4 µA
CM
≤ 5V 70 87 dB
OUT
RL = 250Ω -9.8 -9 V
RL = 250Ω 9.5 10 V
±2.5V square wave, measured 25%-75% 40 50 V/µS
±1V 65 ns
O =
, RL = 500Ω, RF = 358Ω 93 dBc
f = 1MHz, VO = 2V
f = 1MHz, VO = 2V
P-P
, RL = 150Ω, RF = 358Ω 83 dBc
P-P
, RL = 500Ω, RF = 358Ω 94 dBc
P-P
, RL = 150Ω, RF = 358Ω 76 dBc
P-P
-0.6 µV/°C
2
EL2227C
Dual Very Low Noise Amplifier
Electrical Characteristics
VS+= +5V, VS - = -5V, RL = 500Ω and CL = 3pF to 0V, RF = 620Ω & TA = 25°C unless otherwise specified.
Parameter Description Condition Min Typ Max Unit
Input Characteristics
V
OS
TCV
I
B
R
IN
C
IN
CMIR Common-Mode Input Range -4.8 3.4 V
CMRR Common-Mode Rejection Ratio for VIN from -4.8V to 3.4V 60 97 dB
A
VOL
e
n
i
n
Output Characteristics
V
OL
V
OH
I
SC
Power Supply Performance
PSRR Power Supply Rejection Ratio VS is moved from ±2.25V to ±12V 65 95 dB
I
S
V
S
Dynamic Performance
SR Slew Rate
t
S
BW -3dB Bandwidth RF = 358Ω 90 MHz
HD2 2nd Harmonic Distortion f = 1MHz, VO = 2V
HD3 3rd Harmonic Distortion f = 1MHz, VO = 2V
Input Offset Voltage V
Average Offset Voltage Drift
OS
Input Bias Current V
= 0V 0.2 3 mV
CM
[1]
= 0V -9 -3.7 µA
CM
-0.6 µV/°C
Input Impedance 7.3 MΩ
Input Capacitance 1.6 pF
Open-Loop Gain -5V ≤ V
≤ 5V 70 84 dB
OUT
Voltage Noise f = 100kHz 1.9 nV/√Hz
Current Noise f = 100kHz 1.2 pA/√Hz
Output Swing Low RL = 500Ω -3.8 -3.5 V
RL = 250Ω -3.7 -3.5 V
Output Swing High RL = 500Ω 3.5 3.7 V
RL = 250Ω 3.5 3.6 V
Short Circuit Current RL = 10Ω 60 100 mA
Supply Current (Per Amplifier) No Load 4.5 5.5 mA
Operating Range ±2.5 ±12 V
[2]
Settling to 0.1% (AV = +2) (AV = +2), V
±2.5V square wave, measured 25%-75% 35 45 V/µS
±1V 77 ns
O =
, RL = 500Ω, RF = 358Ω 98 dBc
P-P
f = 1MHz, VO = 2V
f = 1MHz, VO = 2V
, RL = 150Ω, RF = 358Ω 90 dBc
P-P
, RL = 500Ω, RF = 358Ω 94 dBc
P-P
, RL = 150Ω, RF = 358Ω 79 dBc
P-P
EL2227C
3
EL2227C
Dual Very Low Noise Amplifier
EL2227C
Typical Performance Curves
Non-inverting Frequency Response for Various R
4
3
2
1
0
-1
-2
-3
Normalized Gain (dB)
-4
VS=±12V
AV=+2
-5
RL=500Ω
-6
1M 10M 100M
Non-inverting Frequency Response (Gain)
4
3
2
1
0
-1
-2
-3
Normalized Gain (dB)
-4
VS=±12V
RF=350Ω
-5
RL=500Ω
-6
1M 10M 100M
RF=1kΩ
RF=100Ω
RF=350Ω
Frequency (Hz)
AV=5AV=10 AV=-10
Frequency (Hz)
RF=620Ω
AV=2
F
200M
200M
Inverting Frequency Response for Various R
4
3
2
1
0
-1
-2
-3
Normalized Gain (dB)
-4
VS=±12V
AV=-1
-5
RL=500Ω
-6
1M 10M 100M
Inverting Frequency Response (Gain)
4
3
2
1
0
-1
-2
-3
Normalized Gain (dB)
-4
VS=±12V
RF=420Ω
-5
RL=500Ω
-6
1M 10M 100M
AV=-5
RF=100Ω
RF=350Ω
RF=420Ω
RF=620Ω
RF=1kΩ
Frequency (Hz)
AV=-2 AV=-1
Frequency (Hz)
F
200M
200M
Non-inverting Frequency Response (Phase)
135
90
45
0
-45
-90
Phase (°)
-135
-180
-225
VS=±12
RF=350Ω
-270
RL=500Ω
-315
1M 10M
AV=5
AV=10
Frequency (Hz)
AV=2
100M 200M
Inverting Frequency Response (Phase)
135
90
45
0
-45
-90
Phase (°)
-135
-180
-225
VS=±12V
RF=420Ω
-270
RL=500Ω
-315
1M 10M 100M
AV=-10
AV=-1
AV=-2
AV=-5
200M
Frequency (Hz)
4
Typical Performance Curves
EL2227C
EL2227C
Dual Very Low Noise Amplifier
Non-inverting Frequency Response for Various
Input Signal Levels
4
VS=±12V
3
RF=350Ω
AV=+2
2
RL=500Ω
1
0
-1
-2
-3
Normalized Gain (dB)
-4
-5
-6
100k 1M 10M
Non-inverting Frequency Response for Various C
5
4
3
2
1
0
-1
-2
Normalized Gain (dB)
VS=±12V
RF=620Ω
-3
RL=500Ω
-4
AV=+2
-5
1M 10M 100M
VIN=500mV
VIN=1V
VIN=2V
Frequency (Hz)
Frequency (Hz)
VIN=100mV
PP
PP
PP
CL=30pF
CL=12pF
PP
CL=2pF
VIN=20mV
100M
Inverting Frequency Response for Various Input
Signal Levels
4
3
2
PP
-1
-2
-3
Normalized Gain (dB)
-4
-5
-6
L
-1
-2
-3
Normalized Gain (dB)
-4
-5
200M
-6
VIN=1.4V
VIN=2.8V
PP
PP
Frequency (Hz)
CL=12pF
Frequency (Hz)
1
0
VS=±12V
RF=420Ω
RL=500Ω
AV=-1
1M 10M 100M
Inverting Frequency Response for Various C
4
3
2
1
0
VS=±12V
RF=420Ω
RL=500Ω
AV=-1
1M 10M 100M
VIN=280mV
CL=30pF
CL=2pF
VIN=20mV
PP
PP
200M
L
200M
Non-inverting Frequency Response for Various R
4
3
2
1
0
-1
-2
-3
Normalized Gain (dB)
VS=±12V
RF=620Ω
-4
CL=15pF
-5
AV=+2
-6
1M 10M 100M
RL=100Ω RL=500Ω
RL=50Ω
Frequency (Hz)
L
200M
Frequency Response for Various Output DC
Levels
4
3
2
1
0
-1
-2
-3
Normalized Gain (dB)
VS=±12V
RF=620Ω
-4
RL=500Ω
-5
AV=+2
-6
100k 1M 10M
VO=+10V
VO=-10V VO=+5V
VO=0V
VO=-5V
100M
Frequency (Hz)
5
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