EL2126CW [ELANTEC]
Ultra-low Noise, Low Power, Wideband Amplifier; 超低噪声，低功耗，宽带放大器
| 型号： | EL2126CW |
| 厂家： | 
ELANTEC SEMICONDUCTOR |
| 描述： | Ultra-low Noise, Low Power, Wideband Amplifier |
| 文件： | 总11页 (文件大小：281K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
EL2126C - Preliminary
Ultra-low Noise, Low Power, Wideband Amplifier
Features
General Description
• Voltage noise of only 1.3nV/ÖHz
• Current noise of only 1.2pA/ÖHz
• Low offset voltage £200µV
• 90MHz -3dB BW for AV=10
• Very low supply current -4.7mA
• SOT23 package
The EL2126C is an ultra-low noise, wideband amplifier that runs on
half the supply current of competitive parts. It is intended for use in
systems such as ultrasound imaging where a very small signal needs to
be amplified by a large amount without adding significant noise. Its
low power dissipation enables it to be packaged in the tiny SOT23
package, which further helps systems where many input channels cre-
ate both space and power dissipation problems.
• ±5V to ±15V operation
The EL2126C is stable for gains of 10 and greater and uses traditional
voltage feedback. This allows the use of reactive elements in the feed-
back loop, a common requirement for many filter topologies. It
operates from ±5V to ±15V supplies and is available in a 5-pin SOT23
package and 8-pin SO and 8-pin PDIP packages.
Applications
• Ultrasound input amplifiers
• Wideband instrumentation
• Communication equipment
• AGC & PLL active filters
• Wideband sensors
The EL2126C is fabricated in Elantec’s proprietary complementary
bipolar process, and is specified for operation over the full -40°C to
+85°C temperature range.
Ordering Information
Part No
EL2126CW
EL2126CS
EL2126CN
Package
5-Pin SOT23
8-Pin SO
Tape & Reel
Outline #
MDP0038
MDP0027
MDP0031
Connection Diagrams
8-Pin PDIP
NC
IN-
1
2
3
4
8
7
6
5
NC
OUT
VS-
IN+
1
2
3
5
4
VS+
IN-
VS+
OUT
NC
-
+
IN+
VS-
+
-
EL2126C
EL2126C
(5-Pin SOT23)
(8-Pin SO and 8-Pin PDIP)
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.
EL2126C - Preliminary
Ultra-low Noise, Low Power, Wideband Amplifier
Absolute Maximum Ratings (T = 25°C)
A
VS+ to VS-
33V
40mA
Power Dissipation
See Curves
-40°C to +85°C
-60°C to +150°C
Continuous Output Current
Any Input
Operating Temperature
Storage Temperature
VS+ - 0.3V to VS- + 0.3V
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
Electrical Characteristics
VS+ = +5V, VS- = -5V, TA = 25°C, RF = 180W, RG = 20W, RL = 500W unless otherwise specified.
Parameter
DC Performance
VOS
Description
Conditions
Min
Typ
Max
Unit
Input Offset Voltage (SO8 & PDIP8)
Input Offset Voltage (SOT23-5)
Offset Voltage Temperature Coefficient
Input Bias Current
0.5
3
3
mV
mV
µV/°C
µA
µA
nA/°C
pF
TCVOS
IB
TBD
-6
-15
IOS
Input Bias Current Offset
0.13
TBD
2.2
0.8
TCIB
CIN
Input Bias Current Temperature Coefficient
Input Capacitance
AVOL
PSRR
CMRR
CMIR
Open Loop Gain
VO = ±2.5V
75
70
86
dB
[1]
Power Supply Rejection Ratio
100
85
dB
[2]
Common Mode Rejection Ratio
70
dB
Common Mode Input Range
Positive Output Voltage Swing
Negative Output Voltage Swing
Output Voltage Swing into 100W
±3.5
+3.7
-3.7
±3
V
VOUT
+
-
RF = 1kW, RL = ¥
+3.8
-4
V
VOUT
V
VOUTL
IOUT
ISY
±3.4
100
4.7
V
[3]
Output Short Circuit Current
70
mA
mA
Supply Current
5.5
AC Performance - VCC = -5V, RG = 20W, CL = 3pF
BW
-3dB Bandwidth, RL = 500W
±0.1dB Bandwidth, RL = 500W
±1dB Bandwidth, RL = 500W
Peaking, RL = 500W
98
17
MHz
MHz
MHz
dB
BW ±0.1dB
BW ±1dB
Peaking
SR
80
0.6
120
Slew Rate (±2.5V Square Wave, Measured
20%-80%)
TBD
V/µs
OS+
OS-
Negative Overshoot, 4Vpk-pk Output Square
Wave
+2.8
-7
%
%
Positive Overshoot, 4Vpk-pk Output Square
Wave
TS
Settling Time to 0.1% of ±1V Pulse
Voltage Noise Spectral Density
Current Noise Spectral Density
51
ns
nV/ÖHz
pA/ÖHz
dBc
VN
1.3
IN
1.2
[4]
HD2
HD3
THD
IMD
2nd Harmonic Distortion
TBD
TBD
TBD
TBD
[4]
3rd Harmonic Distortion
dBc
[5]
Total Harmonic Distortion
dBc
[6]
Intermodulation Distortion
%
1. Measured by moving the supplies from ±4V to ±6V
2. Measured with the input moving -4.4V to +3.5V
2
EL2126C - Preliminary
Ultra-low Noise, Low Power, Wideband Amplifier
3. Pulse test only and using a 10W load
4. Frequency = 10MHz, VOUT = 1Vpk-pk, into 100W and 5pF load
5. Frequency = 20MHz, VOUT = -20dBm (0.0274VRMS) into 500W and 15pF load
6. Two-tone IMD, frequencies = 5MHz and 6MHz at -20dBm output level, RLOAD = 500W and 15pF
Electrical Characteristics
VS+ = +15V, VS- = -15V, TA = 25°C, RF = 180W, RG = 20W, RL = 500W unless otherwise specified.
Parameter
DC Performance
VOS
Description
Conditions
Min
Typ
Max
Unit
Input Offset Voltage (SO8 & PDIP8)
Input Offset Voltage (SOT23-5)
Offset Voltage Temperature Coefficient
Input Bias Current
-0.5
3
3
mV
mV
µV/°C
µA
µA
nA/°C
pF
TCVOS
IB
TBD
-5
-15
IOS
Input Bias Current Offset
0.16
TBD
2.2
0.7
TCIB
CIN
Input Bias Current Temperature Coefficient
Input Capacitance
AVOL
PSRR
CMRR
CMIR
VOUT
Open Loop Gain
75
65
88
dB
[1]
Power Supply Rejection Ratio
80
dB
[2]
Common Mode Rejection Ratio
70
85
dB
Common Mode Input Range
±13.5
±13.5
10.7
-9.5
90
TBD
±13.7
11.7
-10.2
150
5
V
Output Voltage Swing
V
VOUTL
VOUTL
IOUT
+
-
Positive Output Voltage Swing into 100W
Negative Output Voltage Swing into 100W
RF = 1kW, RL = ¥
V
V
[3]
Output Short Circuit Current
mA
mA
ISY
Supply Current
6
AC Performance - VCC = -5V, RG = 20W, CL = 3pF
BW
-3dB Bandwidth, RL = 500W
±0.1dB Bandwidth, RL = 500W
±1dB Bandwidth, RL = 500W
Peaking, RL = 500W
136
26
MHz
MHz
MHz
dB
BW ±0.1dB
BW ±1dB
Peaking
SR
60
2.1
150
Slew Rate (±2.5V Square Wave, Measured
25%-75%)
TBD
V/µS
OS+
OS-
Positive Overshoot, 4Vpk-pk Output Square
Wave
1.6
%
%
Negative Overshoot, 4Vpk-pk Output Square
Wave
-4.4
TS
Settling Time to 0.1% of ±1V Pulse
Voltage Noise Spectral Density
Current Noise Spectral Density
48
ns
nV/ÖHz
pA/ÖHz
dBc
VN
1.4
IN
1.1
[4]
HD2
HD3
THD
IMD
2nd Harmonic Distortion
TBD
TBD
TBD
TBD
[4]
3rd Harmonic Distortion
dBc
[5]
Total Harmonic Distortion
dBc
[6]
Intermodulation Distortion
%
1. Measured by moving the supplies from ±13.5V to ±16.5V
2. Measured with the input moving -14.4V to +13.8V
3. Pulse test only and using a 10W load
4. Frequency = 10MHz, VOUT = 1Vpk-pk, into 100W and 5pF load
5. Frequency = 20MHz, VOUT = -20dBm (0.0274VRMS) into 500W and 15pF load
3
EL2126C - Preliminary
Ultra-low Noise, Low Power, Wideband Amplifier
6. Two-tone IMD, frequencies = 5MHz and 6MHz at -20dBm output level, RLOAD = 500W and 15pF
4
EL2126C - Preliminary
Ultra-low Noise, Low Power, Wideband Amplifier
Typical Performance Curves
Non-Inverting Frequency Response for Various R
Non-Inverting Frequency Response for Various R
F
F
10
10
6
V =±5V
V =±15V
S
A =10
V
S
R =1kW
F
A =10
V
R =1kW
F
6
2
C =5pF
C =5pF
L
R =500W
L
L
R =500W
F
R =500W
F
R =500W
L
2
-2
-2
-6
-10
R =180W
F
R =180W
F
R =100W
F
-6
R =100W
F
-10
1M
10M
Frequency (Hz)
100M
1M
10M
Frequency (Hz)
100M
Inverting Frequency Response for Various R
Inverting Frequency Response for Various R
F
F
8
4
8
4
R =1kW
F
V =±5V
V =±15V
S
S
R =500W
R =1kW
F
F
A =-10
A =-10
V
V
R =500W
F
C =5pF
C =5pF
L
R =500W
L
L
R =350W
R =500W
L
F
R =350W
F
0
0
R =200W
F
R =200W
F
-4
-8
-12
-4
-8
-12
R =100W
R =100W
F
F
1M
10M
Frequency (Hz)
100M
1M
10M
Frequency (Hz)
100M
Non-Inverting Frequency Response for Various Gain
Non-Inverting Frequency Response for Various Gain
10
6
10
6
V =±5V
V =±15V
S
S
R =20W
R =20W
G
G
R =500W
L
R =500W
L
C =5pF
L
C =5pF
L
A =10
V
2
2
A =10
V
A =20
V
A =20
V
-2
-6
-10
-2
-6
-10
A =50
V
A =50
V
1M
10M
Frequency (Hz)
100M
1M
10M
Frequency (Hz)
100M
5
EL2126C - Preliminary
Ultra-low Noise, Low Power, Wideband Amplifier
Typical Performance Curves
Inverting Frequency Response for Various Gain
Inverting Frequency Response for Various R
F
8
8
4
V =±5V
V =±15V
S
S
C =5pF
C =5pF
L
L
R =35W
G
R =20W
G
4
0
0
A =10
V
A =10
V
-4
-4
-8
-12
A =50
V
A =50
V
A =20
V
A =20
V
-8
-12
1M
10M
Frequency (Hz)
100M
1M
10M
100M
Frequency (Hz)
Non-Inverting Frequency Response for Various Output
Signal Levels
Non-Inverting Frequency Response for Various Output
Signal Levels
8
4
10
6
V =±5V
V =±15V
S
S
C =5V
C =5pF
R =500W
L
L
L
V =30mV
O
R =500W
PP
L
R =180W
R =180W
A =10
V
F
F
V =500mV
O
PP
A =10
V
V =500mV
V =30mV
O PP
0
2
O
PP
V =1V
O
PP
-4
-8
-12
-2
-6
-10
V =5V
V =10V
O PP
O
PP
V =2.5V
V =5V
O PP
O
PP
V =1V
V =2.5V
O PP
O
PP
1M
10M
100M
1M
10M
Frequency (Hz)
100M
Frequency (Hz)
Inverting Frequency Response for Various Output Signal
Levels
Inverting Frequency Response for Various Output Signal
Levels
8
4
8
4
V =500mV
V =500mV
O PP
O
PP
V =30mV
V =30mV
O PP
O
PP
V =1V
O
PP
V =1V
O
PP
0
0
V =3.4V
V =3.4V
O PP
O
PP
-4
-8
-12
-4
-8
-12
V =±5V
V =±15V
S
S
C =5p
C =5pF
L
L
V =2.5V
O
V =2.5V
O
PP
PP
R =500W
R =500W
L
L
R =350W
R =200W
F
F
A =10
V
A =10
V
1M
10M
100M
1M
10M
100M
Frequency (Hz)
Frequency (Hz)
6
EL2126C - Preliminary
Ultra-low Noise, Low Power, Wideband Amplifier
Typical Performance Curves
Non-Inverting Frequency Response for Various C
Non-Inverting Frequency Response for Various C
L
L
10
6
10
6
V =±5V
V =±15V
S
S
R =180W
R =180W
F
F
C =28pF
L
C =11pF
L
C =28pF
L
A =10
V
A =10
V
R =500W
L
R =500W
L
C =16pF
L
C =11pF
L
C =16pF
L
2
2
C =5pF
C =5pF
L
L
-2
-6
-10
-2
-6
-10
C =1.2pF
L
C =1pF
L
1M
10M
Frequency (Hz)
100M
1M
10M
Frequency (Hz)
100M
Inverting Frequency Response for Various C
Inverting Frequency Response for Various C
L
L
8
4
8
4
V =±5V
V =±15V
S
S
C =28pF
L
C =29pF
L
R =350W
R =200W
F
F
C =16pF
L
R =500W
R =500W
L
L
C =16pF
L
A =-10
V
A =-10
V
0
0
C =11pF
L
C =11pF
L
-4
-8
-12
-4
-8
-12
C =5pF
L
C =5pF
L
C =1.2pF
L
C =1.2pF
L
1M
10M
Frequency (Hz)
100M
1M
10M
Frequency (Hz)
100M
Open Loop Gain/Phase
Supply Current vs Supply Voltage
100
80
60
40
20
0
250
150
50
0.6/div
-50
-150
-250
0
10k
100k
1M
10M
100M
1G
0
1.5/div
Frequency (Hz)
Supply Voltage (V)
7
EL2126C - Preliminary
Ultra-low Noise, Low Power, Wideband Amplifier
Typical Performance Curves
Bandwidth vs V
Peaking vs V
s
s
160
140
120
100
80
3.0
2.5
2.0
1.5
1.0
0.5
0
R =20W
R =20W
G
G
A =-10
R =500W
R =500W
V
L
L
C =5pF
L
C =5pF
L
A =10
V
A =10
V
A =-20
V
60
40
A =-20
V
A =-10
V
A =-50
V
20
A =-50
V
A =50
V
0
0
2
4
6
8
10
12
14
16
0
2
4
6
8
10
12
14
16
±V (V)
S
±Supply Voltage (V)
Large Signal Step Response
Small Signal Step Response
V =±5V R =180W
S
F
V =2V
R =20W
G
O
PP
V =±5V
S
V =100mV
O
PP
0.5V/div
20mV/div
R =180W
F
R =20W
G
10ns/div
10ns/div
1MHz Harmonic Distortion vs Output Swing
1MHz Harmonic Distortion vs Output Swing
-40.0
-50.0
-60.0
-70.0
-80.0
-90.0
-100.0
-30.0
-40.0
-50.0
-60.0
-70.0
-80.0
-90.0
-100.0
V =±5V
V =±5V
S
S
V =2V
V =2V
O
P-P
O P-P
R =180W
R =180W
F
F
2nd H
A =10
A =10
V
V
2nd H
3rd H
R =500W
L
R =500W
L
3rd H
0
1
2
3
4
(V
5
6
7
8
0
5
10
15
)
20
25
V
)
V
(V
OUT P-P
OUT P-P
8
EL2126C - Preliminary
Ultra-low Noise, Low Power, Wideband Amplifier
Typical Performance Curves
Total Harmonic Distortion vs Frequency
Noise vs Frequency
-20
10
V =±5V
S
V =2V
-30
-40
-50
-60
-70
-80
-90
O
P-P
I , V =±5V
N
S
V , V =±15V
N
S
V , V =±5V
N
S
I , V =±15V
N
S
1
1k
10k
100k
1M
10M
100M
10
100
1k
Frequency (Hz)
10k
100k
400M
200M
Frequency (Hz)
Settling Time vs Accuracy
Group Delay vs Frequency
70
60
50
40
30
20
10
0
16
12
8
V =±5V
R =500W
L
S
A =10
V
4
A =-10
V
0
-4
1M
0.1
1.0
Accuracy (%)
10.0
10M
Frequency (Hz)
100M
CMRR vs Frequency
PSRR vs Frequency
-10
-30
110
90
70
50
30
10
V =±5V
S
PSRR-
-50
-70
PSRR+
-90
-110
10
100
1k
10k
100k
1M
10M 100M
10k
100k
1M
10M
Frequency (Hz)
Frequency (Hz)
9
EL2126C - Preliminary
Ultra-low Noise, Low Power, Wideband Amplifier
Typical Performance Curves
Closed Loop Output Impedance vs Frequency
Bandwidth and Peaking vs Temperature
120
100
80
60
40
20
0
3.5
3
100 V =±5V
S
V =±5V
S
2.5
2
10
1
1.5
1
0.5
0
0.1
0.01
10k
-0.5
100k
1M
10M
100M
-40
0
40
80
120
160
Frequency (Hz)
Temperature
10
EL2126C - Preliminary
Ultra-low Noise, Low Power, Wideband Amplifier
General Disclaimer
Specifications contained in this data sheet are in effect as of the publication date shown. Elantec, Inc. reserves the right to make changes in the cir-
cuitry or specifications contained herein at any time without notice. Elantec, Inc. assumes no responsibility for the use of any circuits described
herein and makes no representations that they are free from patent infringement.
WARNING - Life Support Policy
Elantec, Inc. products are not authorized for and should not be used
within Life Support Systems without the specific written consent of
Elantec, Inc. Life Support systems are equipment intended to sup-
port or sustain life and whose failure to perform when properly used
in accordance with instructions provided can be reasonably
Elantec Semiconductor, Inc.
675 Trade Zone Blvd.
Milpitas, CA 95035
Telephone: (408) 945-1323
(888) ELANTEC
expected to result in significant personal injury or death. Users con-
templating application of Elantec, Inc. Products in Life Support
Systems are requested to contact Elantec, Inc. factory headquarters
to establish suitable terms & conditions for these applications. Elan-
tec, Inc.’s warranty is limited to replacement of defective
components and does not cover injury to persons or property or
other consequential damages.
Fax:
(408) 945-9305
European Office: +44-118-977-6020
Japan Technical Center: +81-45-682-5820
Printed in U.S.A.
11
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