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.
E
L
2
0
7
0
C
General Description
The EL2070C is a wide bandwidth, fast settling monolithic amplifier
incorporating a disable/enable feature. Built using an advanced com-
plementary bipolar process, this amplifier uses current-mode feedback
to achieve more bandwidth at a given gain than conventional opera-
tional amplifiers. Designed for closed-loop gains of 1 to 8, the
EL2070C has a 200MHz -3dB bandwidth (A
V
= +2), and 12ns settling
to 0.05% while consuming only 15mA of supply current. Furthermore,
the fast disable/enable times of 200ns/100ns allow rapid analog
multiplexing.
The EL2070C is an obvious high-performance solution for video dis-
tribution and line-driving applications, especially when its disable
feature can be used for fast analog multiplexing. Furthermore, the low
15mA supply current, and the very low 5mA of supply current when
disabled suggest use in systems where power is critical. With differen-
tial gain/phase of 0.02%/0.01, guaranteed video specifications, and a
minimum 50mA output drive, performance in these areas is assured.
The EL2070C's settling to 0.05% in 12ns, low distortion, and ability to
drive capacitive loads make it an ideal flash A/D driver. The wide
200MHz bandwidth and extremely linear phase allow unmatched sig-
nal fidelity. D/A systems can also benefit from the EL2070C,
especially if linearity and drive levels are important.
Connection Diagrams
DIP and SO Package - Top VIew
Manufactured under U.S. Patent No. 4,893,091
Features
200MHz -3dB bandwidth, A
V
= 2
Disable/enable
12ns settling to 0.05%
V
S
= 5V @ 15mA
Low distortion: HD2, HD3 @
-----
-60dBc at 20MHz
Differential gain 0.02% at NTSC,
PAL
Differential phase 0.01 at NTSC,
PAL
Overload/short-circuit protected
1 to 8 closed-loop gain range
Low cost
Applications
Video gain block
Video distribution
HDTV amplifier
Analog multiplexing (using
disable)
Power-down mode (using disable)
High-speed A/D conversion
D/A I-V conversion
Photodiode, CCD preamps
IF processors
High-speed communications
Ordering Information
Part No.
Temp. Range
Package
Outline #
EL2070CN
-40C to +85C
8-Pin P-DIP
MDP0031
EL2070CS
-40C to +85C
8-Lead SO
MDP0027
EL2070C
200MHz Current Feedback Amplifier
S
e
p
t
e
m
b
e
r
2
6
,
2
0
0
1
2
EL2070C
200MHz Current Feedback Amplifier
E
L
2
0
7
0
C
Absolute Maximum Ratings
(T
A
= 25C)
Supply Voltage (V
S
)
7V
Output Current
70mA
(Output is short-circuit protected to ground, however,
maximum reliability is obtained if I
OUT
does not exceed 70mA)
Common-Mode Input Voltage
V
S
Differential Input Voltage
5V
Disable Input Voltage
+V
S
, -1V
Thermal Resistance
JA
= 95C/W P-DIP
JA
= 175C/W SO-8
Applied Output Voltage (Disabled)
V
S
Power Dissipation
See Curves
Operating Temperature
EL2070C
-40C to +85C
Lead Temperature (Soldering, 5 Seconds)
300C
Junction Temperature
175C
Storage Temperature-60C to +150C
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: T
J
= T
C
= T
A
.
Open Loop DC Electrical Characteristics
V
S
= 5V, R
L
= 100
unless otherwise specified
Parameter
Description
Test Conditions
Temp
Min
Typ
Max
Unit
V
OS
Input Offset Voltage
25C
2
5.5
mV
T
MIN
8.2
mV
T
MAX
9.0
mV
d(V
OS
)/dT
Average Offset
Voltage Drift
[1]
All
10.0
40.0
V/C
+I
IN
+Input Current
25C, T
MAX
10
25.0
A
T
MIN
36.0
A
d(+I
IN
)/dT
Average +Input
Current Drift
[1]
All
50.0
200.0
nA/C
-I
IN
-Input Current
25.0C
10
30
A
T
MIN
, T
MAX
46
A
d(-I
IN
)/dT
Average -Input
Current Drift
[1]
All
50.0
200.0
nA/C
PSRR
Power Supply
Rejection Ratio
All
45.0
50.0
dB
CMRR
Common-Mode
Rejection Ratio
All
40.0
50.0
dB
I
S
Supply Current--Quiescent
No Load
All
16.0
20.0
mA
IS
OFF
Supply Current--Disabled
[2]
All
4.0
7.0
mA
+R
IN
+Input Resistance
25C, T
MAX
100.0
200.0
k
T
MIN
50.0
k
C
IN
Input Capacitance
All
0.5
2.0
pF
R
OUT
Output Impedance (DC)
All
0.1
0.2
R
OUT
D
Output Resistance (DC)
Disabled
All
100.0
200.0
k
C
OUT
D
Output Capacitance (DC)
Disabled
All
0.5
2.0
pF
CMIR
Common-Mode
Input Range
[3]
25C, T
MAX
2.0
2.1
V
T
MIN
1.2
V
I
OUT
Output Current
25C, T
MAX
50.0
70.0
mA
T
MIN
35.0
mA
V
OUT
Output Voltage Swing
No Load
All
3.3
3.5
V
V
OUT
L
Output Voltage Swing
100
25C
3.0
3.4
V
3
EL2070C
200MHz Current Feedback Amplifier
E
L
2
0
7
0
C
-ICMR
Input Current Common
Mode Rejection
25C
8.0
33.0
A/V
+IPSR
+Input Current Power
Supply Rejection
25C
1.0
3.6
A/V
-IPSR
-Input Current Power
Supply Rejection
25C
20
24
A/V
R
OL
Transimpedance
25C
30.0
125.0
V/mA
T
MIN
80.0
V/mA
T
MAX
140.0
V/mA
I
LOGIC
Pin 8 Current @ 0V
All
0.8
1.2
mA
V
DIS
Maximum Pin 8
V to Disable
All
0.5
V
V
EN
Minimum Pin 8
V to Enable
All
3.5
V
I
DIS
Minimum Pin 8
I to Disable
All
350.0
A
I
EN
Maximum Pin 8
I to Enable
All
60.0
A
1. Measured from T
MIN
to T
MAX
.
2. Supply current when disabled is measured at the negative supply.
3. Common-mode input range for rated performance.
Open Loop DC Electrical Characteristics (Continued)
V
S
= 5V, R
L
= 100
unless otherwise specified
Parameter
Description
Test Conditions
Temp
Min
Typ
Max
Unit
Closed-Loop AC Electrical Characteristics
V
S
= 5V, R
F
= 250
, A
V
= +2, R
L
= 100
unless otherwise specified
Parameter
Description
Test Conditions
Temp
Min
Typ
Max
Unit
FREQUENCY RESPONSE
SSBW
-3dB Bandwidth
(V
OUT
< 0.5V
PP
)
25C
150.0
200.0
MHz
T
MIN
150.0
MHz
T
MAX
120.0
MHz
LSBW
-3dB Bandwidth
(V
OUT
< 5.0V
PP
)
A
V
= +5
All
35.0
50.0
MHz
GAIN FLATNESS
GFPL
Peaking
V
OUT
< 0.5V
PP
<40MHz
25C
0.0
0.3
dB
T
MIN
, T
MAX
0.4
dB
GFPH
Peaking
V
OUT
< 0.5V
PP
>40MHz
25C
0.0
0.5
dB
T
MIN
, T
MAX
0.7
dB
GFR
Rolloff
V
OUT
< 0.5V
PP
<75MHz
25C
0.6
1.0
dB
T
MIN
1.0
dB
T
MAX
1.3
dB
LPD
Linear Phase Deviation
V
OUT
< 0.5V
PP
<75MHz
25C, T
MIN
0.2
1.0
T
MAX
1.2
TIME-DOMAIN RESPONSE
t
r1
, t
f1
Rise Time, Fall Time
0.5V Step
All
1.6
2.4
ns
t
r2
, t
f2
Rise Time, Fall Time
5.0V Step
All
6.5
10.0
ns
4
EL2070C
200MHz Current Feedback Amplifier
E
L
2
0
7
0
C
t
s1
Settling Time to 0.1%
2.0V Step
All
10.0
13.0
ns
t
s2
Settling Time to 0.05%
2.0V Step
All
12.0
15.0
ns
OS
Overshoot
0.5V Step
25C, T
MAX
0.0
10.0
%
T
MIN
15.0
%
SR
Slew Rate
A
V
= +2
All
430.0
700.0
V/s
A
V
= - 2
All
1600.0
V/s
DISTORTION
HD2
2nd Harmonic Distortion
at 20MHz
2V
PP
25C
-60.0
-45.0
dBc
T
MIN
-40.0
dBc
T
MAX
-45.0
dBc
HD3
3rd Harmonic Distortion
at 20MHz
2V
PP
25C
-60.0
-50.0
dBc
T
MIN
, T
MAX
-50.0
dBc
EQUIVALENT INPUT NOISE
NF
Noise Floor
>100kHz
[1]
25C
-157.0
-154.0
dBm (1Hz)
T
MIN
-154.0
dBm (1Hz)
T
MAX
-153.0IV
dBm (1Hz)
INV
Integrated Noise
100kHz to 200MHz
[1]
25C
40.0
57.0
V
T
MIN
57.0
V
T
MAX
63.0
V
DISABLE/ENABLE PERFORMANCE
T
OFF
Disable Time to >50dB
10MHz
All
1000.0
IV
ns
T
ON
Enable Time
All
200.0
ns
OFFIso
Off Isolation
10MHz
All
55.0
59.0
dB
VIDEO PERFORMANCE
d
G
Differential Gain
[2]
NTSC/PAL
25C
0.02
0.08
% pp
d
P
Differential Phase
[2]
NTSC/PAL
25C
0.01
0.08
pp
d
G
Differential Gain
[2]
30MHz
25C
0.05
0.18
% pp
d
P
Differential Phase
[2]
30MHz
25C
0.05
0.18
pp
VBW
-0.1dB Bandwidth
[2]
25C
30.0
60.0
MHz
1. Noise Tests are performed from 5MHz to 200MHz.
2. Differential gain/phase tests are with R
L
= 100
. For other values of R
L
, see curves.
Closed-Loop AC Electrical Characteristics
V
S
= 5V, R
F
= 250
, A
V
= +2, R
L
= 100
unless otherwise specified
Parameter
Description
Test Conditions
Temp
Min
Typ
Max
Unit
5
EL2070C
200MHz Current Feedback Amplifier
E
L
2
0
7
0
C
Typical Performance Curves
Non-Inverting
Frequency Response
Inverting
Frequency Response
Frequency Response for
Various R
L
s
2-Tone 3rd Order
Intermodulation Intercept
2nd and 3rd
Harmonic Distortion
Open-Loop Transimpedance
Gain and Phase
Equivalent Input Noise
Power-Supply
Rejection Ratio
Common-Mode
Rejection Ratio
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