EL2130C [ELANTEC]
85 MHz Current Feedback Amplifier; 85 MHz的电流反馈放大器
| 型号： | EL2130C |
| 厂家： | 
ELANTEC SEMICONDUCTOR |
| 描述： | 85 MHz Current Feedback Amplifier |
| 文件： | 总8页 (文件大小：231K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
EL2130C
85 MHz Current Feedback Amplifier
Features
b
General Description
The EL2130 is a wideband current mode feedback amplifier op-
e
e
#
3 dB bandwidth
85 MHz,
75 MHz,
b
a
5V power supplies. Built using Elantec’s Complementary Bi-
e
3 dB bandwidth
timized for gains between 10 and
g
10 while operating on
A
1
V
b
A
#
b
polar process, this device exhibits 3 dB bandwidths in excess
of 85 MHz at unity gain and 75 MHz at a gain of two. The
EL2130 is capable of output currents in excess of 50 mA giving
it the ability to drive either double or single terminated 50X
coaxial cables.
e
2
V
s
s
# NTSC/PAL dG 0.03%, dP
0.1
§
# 50 mA output current
g
# Drives 2.5V into 100X load
e
Exhibiting a Differential Gain of 0.03% and a Differential
Phase of 0.1 at NTSC and PAL frequencies. The EL2130 is an
excellent low cost solution to most video applications.
# Low voltage noise
# Current mode feedback
# Low cost
4 nV/ Hz
0
§
In addition, the EL2130 exhibits very low gain peaking, typical-
ly below 0.1 dB to frequencies in excess of 40 MHz as well as 50
ns settling time to 0.2% making it an excellent choice for driv-
ing flash A/D converters.
Applications
# Video amplifier
# Video distribution amplifier
# Residue amplifiers in ADC
# Current to voltage converter
# Coaxial cable driver
The device is available in the plastic 8-lead narrow-body small
outline (SO) and the 8-pin mini DIP packages, and operates
a
over the temperature range of 0 C to 75 C.
§
§
Ordering Information
Connection Diagram
Part No. Temp. Range
Pkg.
Outline*
Mini DIP and SO
a
EL2130CN 0 C to 75 C 8-Pin P-DIP MDP0031
§
§
a
EL2130CS 0 C to 75 C 8-Lead SO MDP0027
§
§
2130–1
Manufactured under U.S. Patent No. 4,893,091.
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.
©
1990 Elantec, Inc.
EL2130C
85 MHz Current Feedback Amplifier
e
Absolute Maximum Ratings (T
25 C)
§
A
s
a
I
Output Short Circuit Duration
Operating Temperature Range:
Operating Junction Temperature
Storage Temperature
5 sec
g
V
V
Supply Voltage
6V
OP
S
T
T
T
0 C to 75 C
g
g
§
§
Input Voltage
V
S
A
IN
150 C
a
65 C to 150 C
§
DV
Differential Input Voltage
Maximum Power Dissipation
Input Current
6V
J
IN
b
§
§
ST
P
See Curves
D
g
I
10 mA
IN
Important Note:
All parameters having Min/Max specifications are guaranteed. The Test Level column indicates the specific device testing actually
performed during production and Quality inspection. Elantec performs most electrical tests using modern high-speed automatic test
e
e
T
A
equipment, specifically the LTX77 Series system. Unless otherwise noted, all tests are pulsed tests, therefore T
T
.
J
C
Test Level
Test Procedure
I
100% production tested and QA sample tested per QA test plan QCX0002.
e
e
25 C ,
II
100% production tested at T
25 C and QA sample tested at T
§
§
A
A
T
and T
per QA test plan QCX0002.
MIN
MAX
QA sample tested per QA test plan QCX0002.
Parameter is guaranteed (but not tested) by Design and Characterization Data.
III
IV
V
e
Parameter is typical value at T
25 C for information purposes only.
§
A
e
e %
5V; R
L
g
Open Loop DC Electrical Characteristics
V
S
, unless otherwise specified
Parameter
Description
Condition
Temp
Min Typ Max Test Level
Units
mV
V
OS
Input Offset Voltage
25 C
2.0
10
15
I
III
V
§
, T
T
mV
MIN MAX
DV /DT
OS
Offset Voltage Drift
7
mV/ C
§
a
a
I
Input Current
25 C
5.5
15
25
40
50
I
mA
mA
mA
mA
MX
pF
§
, T
IN
T
T
III
I
MIN MAX
b
a
I
IN
Input Current
25 C
10
§
, T
III
I
MIN MAX
a
a
a
R
Input Resistance
Input Capacitance
25 C
§
25 C
§
1.0
50
2.0
1.0
IN
C
V
IN
e
e
g
g
CMRR
Common Mode
Rejection Ratio
V
V
2.5V
2.5V
CM
25 C
§
60
5
I
dB
b
ICMR
Input Current Common
Mode Rejection
25 C
10
20
I
mA/V
mA/V
§
, T
CM
T
III
MIN MIN
s
s
g
g
g
g
PSRR
Power Supply Rejection
Ratio
4.5V
4.5V
V
6V
6V
S
25 C
§
60
70
I
dB
s
s
s
s
a
a
Input Current Power
Supply Rejection
IPSR
V
S
25 C
0.1
0.5
1.0
5.0
8.0
I
mA/V
mA/V
mA/V
mA/V
§
, T
T
T
III
I
MIN MIN
b
b
Input Current Power
Supply Rejection
g
g
IPSR
4.5V
V
S
6V
25 C
0.5
§
, T
III
MIN MIN
2
EL2130C
85 MHz Current Feedback Amplifier
Open Loop DC Electrical Characteristics
e %
e
g
V
S
5V; R
, unless otherwise specified Ð Contd.
L
Parameter
Description Condition
Temp
Min
80
70
60
56
3
Typ
Max
Test Level
Units
V/mA
V/mA
dB
e
OUT
g
R
Transimpedance
V
R
V
2.5V,
2.5V,
25 C
145
I
III
I
§
, T
OL
e
100X
T
T
L
MIN MAX
e
OUT
g
A
VOL
Open Loop DC
Voltage Gain
25 C
66
§
, T
e
e
R
100X
100X
III
I
dB
L
L
MIN MAX
V
O
Output Voltage Swing
Output Current
R
25 C
§
25 C
§
3.5
50
5
V
I
30
I
mA
X
OUT
R
Output Resistance
25 C
V
I
§
Full
OUT
I
I
Quiescent Supply Current
Short Circuit Current
17
85
21
mA
mA
S
25 C
§
V
SC
Closed Loop AC Electrical Characteristics
e
e a
e
e
e
e
100X, T 25 C
A
g
V
S
5V, A
2, R
R
820X, R
§
V
F
G
L
Parameter
Description
Condition
Min
Typ
Max
Test Level
Units
V/ms
ns
e
e
e
e
e
SR
Slew Rate (Note 1)
Rise Time
V
O
V
O
V
O
V
O
V
O
5 V
p-p
625
4.6
V
V
V
V
V
V
V
V
t
t
t
200 mV
200 mV
200 mV
100 mV
r
Fall Time
4.6
ns
f
Prop Delay
4.0
ns
pd
SSBW
dG
3 dB Bandwidth
NTSC/PAL Diff Gain
75
MHz
%
0.03
0.10
dP
NTSC/PAL Diff Phase
deg ( )
§
k
GFPL
Gain Flatness
f
40 MHz
0.08
dB
e
b
a
a
between 1.25V and 1.25V and 1.25V and 1.25V.
b
Note 1: Slew rate is measured with V
5V
p-p
O
3
EL2130C
85 MHz Current Feedback Amplifier
Typical Performance Curves
Normalized Offset Voltage
vs Temperature
Common Mode Rejection
Ratio vs Frequency
Equivalent Input Noise
2130–2
4
EL2130C
85 MHz Current Feedback Amplifier
Typical Performance Curves Ð Contd.
a
Input Bias Current
a
Input Bias Current
vs Temperature
Supply Current
vs Temperature
Power Supply Rejection
Ratio vs Temperature
2130–3
5
EL2130C
85 MHz Current Feedback Amplifier
Typical Performance Curves Ð Contd.
Long-Term Output
Settling Error vs Time,
e
g
V
S
5V
Large Signal Response
Large Signal Response
2130–5
2130–4
e a
100X, C
e
820X
e a
100X, C
e
820X
A
V
R
L
2, R
A
V
R
L
1, R
F
F
e
e
12 pF
e
e
12 pF
L
L
2130–6
Short Term
Output Settling Error vs
e
g
Time, V
5V
S
Small Signal Response
Small Signal Response
2130–7
2130–8
e a
100X, C
e
820X
A
V
R
L
1, R
e a
100X, C
e
820X
F
A
V
R
L
2, R
F
e
e
12 pF
e
e
12 pF
L
L
2130–9
6
EL2130C
85 MHz Current Feedback Amplifier
Typical Performance Curves Ð Contd.
8-Lead Plastic DIP
Maximum Power Dissipation
vs Ambient Temperature
Bandwidth and Peaking
a
Bandwidth and Peaking
e
e a
2
V
vs R for A
F
1
vs R for A
F
V
on
2130–10
Use of sockets, particularly for the SO package,
should be avoided if possible. Sockets add para-
sitic inductance and capacitance which will result
in peaking and overshoot.
Applications Information
Power Supply Bypassing
The EL2130 will exhibit ringing or oscillation if
the power supply leads are not adequately by-
passed. 0.1 mF ceramic disc capacitors are sug-
gested for both supply pins at a distance no
greater than (/2 inch from the device. Surface
mounting chip capacitors are strongly recom-
mended.
Video Characteristics and Applications
Frequency domain testing is performed at Elan-
tec using a computer controlled HP model 8656B
Signal Generator and an HP Model 4195A Net-
work/Spectrum Analyzer. The DUT test board is
built using microwave/strip line techniques, and
solid coaxial cables route the stimulus to the
DUT socket. Signals are routed to and from the
DUT test fixture using subminiature coaxial ca-
ble.
Lead Dress
A ground plane to which decoupling capacitors
and gain setting resistors are terminated will
eliminate overshoot and ringing. However, the
ground plane should not extend to the vicinity of
both the non-inverting and inverting inputs (pins
3 and 2) which would add capacitance to these
nodes, and lead lengths from these pins should be
made as short as possible.
Differential Gain and Phase are tested at a noise
gain of 2 with 100X load. Gain and Phase mea-
surements are made with a DC input reference
7
EL2130C
85 MHz Current Feedback Amplifier
Capacitive Loads
Applications Information Ð Contd.
voltage at 0V and compared to those made at V
ref
equal to 0.7V at frequencies extending to
30 MHz.
As can be seen from the Bode plot, the EL2130
will peak into capacitive loads greater than 20 pf.
In many applications such as flash A/D’s, capaci-
tive loading is unavoidable. In these cases, the
use of a snubber network consisting of a 100X
resistor in series with 47 pF capacitor from the
output to ground is recommended.
The EL2130 is capable of driving 100X to a mini-
mum of 2.5V peak which means that it can natu-
rally drive double terminated (50X) coaxial ca-
bles.
Equivalent Circuit
AC Test Circuit
2130–12
2130–11
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 circuitry 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 Ð 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 in-
tended to support or sustain life and whose failure to perform
Elantec, Inc.
1996 Tarob Court
when properly used in accordance with instructions provided can
be reasonably expected to result in significant personal injury or
death. Users contemplating application of Elantec, Inc. products
Milpitas, CA 95035
in Life Support Systems are requested to contact Elantec, Inc.
Telephone: (408) 945-1323
(800) 333-6314
factory headquarters to establish suitable terms & conditions for
these applications. Elantec, Inc.’s warranty is limited to replace-
ment of defective components and does not cover injury to per-
Fax: (408) 945-9305
European Office: 44-71-482-4596
sons or property or other consequential damages.
8
Printed in U.S.A.
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