EL4452C
December
1994
Rev
A
EL4452C
Wideband Variable-Gain Amplifier with Gain of 10
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
1994 Elantec Inc
Features
Complete variable-gain amplifier
complete with output amplifier
Compensated for Gain
t
10
50 MHz signal bandwidth
50 MHz gain-control bandwidth
Low 29 nV
S
Hz input noise
Operates on
g
5V to
g
15V
supplies
All inputs are differential
l
70 dB attenuation
5 MHz
Applications
AGC variable-gain amplifier
IF amplifier
Transducer amplifier
Ordering Information
Part No
Temp Range
Package
Outline
EL4452CN
b
40 C to
a
85 C 14-pin P-DIP
MDP0031
EL4452CS
b
40 C to
a
85 C 14-lead SO
MDP0027
General Description
The EL4452 is a complete variable-gain circuit It offers wide
bandwidth and excellent linearity while including a powerful
output voltage amplifier drawing modest current The higher
gain and lower input noise makes the EL4452 ideal for use in
AGC systems
The EL4452 operates on
g
5V to
g
15V and has an analog input
range of
g
0 5V AC characteristics do not change appreciably
over the supply range
The circuit has an operational temperature of
b
40 C to
a
85 C
and is packaged in 14-pin P-DIP and SO-14
The EL4452 is fabricated with Elantec's proprietary comple-
mentary bipolar process which gives excellent signal symmetry
and is very rugged
Connection Diagram
4452 1
EL4452C
Wideband Variable-Gain Amplifier with Gain of 10
Absolute Maximum Ratings
(T
A
e
25 C)
V
a
Positive Supply Voltage
16 5V
V
S
V
a
to V
b
Supply Voltage
33V
V
IN
Voltage at any Input or Feedback
V
a
to V
b
DV
IN
Difference between Pairs of
Inputs or Feedback
6V
I
IN
Current into any Input or
Feedback Pin
4 mA
I
OUT
Output Current
30 mA
P
D
Maximum Power Dissipation
See Curves
T
A
Operating Temperature Range
b
40 C to
a
85 C
T
S
Storage Temperature Range
b
60 C to
a
150 C
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
equipment specifically the LTX77 Series system Unless otherwise noted all tests are pulsed tests therefore T
J
e
T
C
e
T
A
Test Level
Test Procedure
I
100% production tested and QA sample tested per QA test plan QCX0002
II
100% production tested at T
A
e
25 C and QA sample tested at T
A
e
25 C
T
MAX
and T
MIN
per QA test plan QCX0002
III
QA sample tested per QA test plan QCX0002
IV
Parameter is guaranteed (but not tested) by Design and Characterization Data
V
Parameter is typical value at T
A
e
25 C for information purposes only
Open-Loop DC Electrical Characteristics
Power supplies at
g
5V T
A
e
25 C R
F
e
910
X R
G
e
100
X R
L
e
500
X
Parameter
Description
Min
Typ
Max
Test
Units
Level
V
DIFF
Signal Input Differential Input Voltage - Clipping
0 4
0 5
I
V
0 6% Nonlinearity
0 4
V
V
V
CM
Common-Mode Range (All Inputs V
DIFF
e
0)
V
S
e
g
5V
g
2 0
g
2 8
I
V
V
S
e
g
15V
g
12 0
g
12 8
V
V
V
OS
Input Offset Voltage
10
I
mV
V
OS
FB
Output Offset Voltage
10
I
mV
V
G
100%
Extrapolated Voltage for 100% Gain
1 8
2 1
2 2
I
V
V
G
0%
Extrapolated Voltage for 0% Gain
b
0 16
b
0 06
0 04
I
V
V
G
1V
Gain at V
GAIN
e
1 (Rf
e
910
X Rg
e
100
X)
4 9
5 35
5 9
I
V V
I
B
Input Bias Current (All Inputs)
b
20
b
9
0
I
mA
I
OS
Input Offset Current Between V
IN
a
and V
IN
b
0 5
4
I
mA
V
GAIN
a
and V
GAIN
b
F
T
Signal Feedthrough V
G
e b
1V
b
100
b
70
I
dB
R
IN
Signal
Input Resistance Signal Input
25
60
I
k
X
R
IN
Gain
Input Resistance Gain Input
50
120
I
k
X
R
IN
FB
Input Resistance Feedback
25
60
V
k
X
CMRR
Common-Mode Rejection Ratio V
IN
70
90
I
dB
2
TD
is
33in
EL4452C
Wideband Variable-Gain Amplifier with Gain of 10
Open-Loop DC Electrical Characteristics
Contd
Power supplies at
g
5V T
A
e
25 C R
F
e
910
X R
G
e
100
X R
L
e
500
X
Parameter
Description
Min
Typ
Max
Test
Units
Level
PSRR
Power-Supply Rejection Ratio V
OS
FB Supplies from
g
5V to
g
15V
65
83
I
dB
E
G
Gain Error Excluding Feedback Resistors V
GAIN
e
2 5V
b
7
a
7
I
%
NL
Nonlinearity V
IN
from
b
0 25V to
a
0 25 V
GAIN
e
1V
0 3
0 6
I
%
V
O
Output Voltage Swing
V
S
e
g
5V
g
2 5
g
2 8
I
V
(V
IN
e
0 V
REF
Varied)
V
S
e
g
15V
g
12 5
g
12 8
I
V
I
SC
Output Short-Circuit Current
40
85
I
mA
I
S
Supply Current V
S
e
g
15V
15 5
18
I
mA
Closed-Loop AC Electrical Characteristics
Power supplies at
g
12V T
A
e
25 C R
L
e
500
X C
L
e
15pF
Parameter
Description
Min
Typ
Max
Test
Units
Level
BW
b
3dB
b
3dB Small-Signal Bandwidth Signal Input
50
V
MHz
BW
g
0 1dB
0 1dB Flatness Bandwidth Signal Input
10
V
MHz
Peaking
Frequency Response Peaking
0 1
V
dB
BW Gain
b
3dB Small-Signal Bandwidth Gain Input
50
V
MHz
SR
Slew Rate V
OUT
between
b
2V and
a
2V
350
400
550
I
V
ms
V
N
Input-Referred Noise Voltage Density
29
V
nV rt-Hz
Test Circuit
4452 2
Note For typical performance curves R
F
e
910
X R
G
e
100
X V
GAIN
e
1V R
L
e
500
X and C
L
e
15 pF unless otherwise noted
3
TD
is
15in
TD
is
15in
EL4452C
Wideband Variable-Gain Amplifier with Gain of 10
Typical Performance Curves
Frequency Response for
Various Feedback Divider Ratios
4452 3
Frequency Response for
Various Gains
4452 4
Frequency Response for
Various R
L
C
L
V
S
e
g
5V
4452 5
Frequency Response for
Various R
L
C
L
V
S
e
g
15V
4452 6
b
3 dB Bandwidth
vs Supply Voltage
4452 7
b
3 dB Bandwidth
vs Die Temperature
4452 8
4
EL4452C
Wideband Variable-Gain Amplifier with Gain of 10
Typical Performance Curves
Contd
Gain and b3 dB Bandwidth
vs Load Resistance
4452 9
Input Common-Mode
Rejection Ratio
vs Frequency
4452 10
Slew Rate
vs Supply Voltage
4452 11
Slew Rate
vs Die Temperature
4452 12
Input Voltage Noise
vs Frequency
4452 13
Nonlinearity
vs Input Signal
4452 14
5
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