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
2
5
0
C
,
E
L
2
4
5
0
C
General Description
The EL2250C/EL2450C are part of a family of the electronics indus-
tries fastest single supply op amps available. Prior single supply op
amps have generally been limited to bandwidths and slew rates to that
of the EL2250C/EL2450C. The 125MHz bandwidth, 275V/s slew
rate, and 0.05%/0.05 differential gain/differential phase makes this
part ideal for single or dual supply video speed applications. With its
voltage feedback architecture, this amplifier can accept reactive feed-
back networks, allowing them to be used in analog filtering
applications. The inputs can sense signals below the bottom supply
rail and as high as 1.2V below the top rail. Connecting the load resistor
to ground and operating from a single supply, the outputs swing com-
pletely to ground without saturating. The outputs can also drive to
within 1.2V of the top rail. The EL2250C/EL2450C will output
100mA and will operate with single supply voltages as low as 2.7V,
making them ideal for portable, low power applications.
The EL2250C/EL2450C are available in PDIP and SO packages in
industry standard pin outs. Both parts operate over the industrial tem-
perature range of -40C to +85C, and are part of a family of single
supply op amps. For single amplifier applications, see the
EL2150C/EL2157C. For dual and triple amplifiers with power down
and output voltage clamps, see the EL2257C/EL2357C.
Connection Diagrams
1
2
3
4
8
7
6
5
1
2
3
4
14
13
12
11
5
6
7
10
9
8
EL2250C
(8-Pin SO & 8-Pin PDIP)
EL2450C
(14-Pin SO & 14-Pin PDIP)
-
+
-
+
A
B
OUTA
INA-
INA+
GND
VS+
OUTB
INB-
INB+
OUTA
INA-
INA+
VS+
OUTD
IND-
IND+
GND
INB+
INB-
OUTB
INC+
INC-
OUTC
- +
-
+
- +
-
+
B
C
A
D
Features
Specified for +3V, +5V, or 5V
applications
Large input common mode range
0V < V
CM
< V
S
-1.2V
Output swings to ground without
saturating
-3dB bandwidth = 125MHz
0.1dB bandwidth = 30MHz
Low supply current = 5mA (per
amplifier)
Slew rate = 275V/s
Low offset voltage = 4mV max
Output current = 100mA
High open loop gain = 80dB
Differential gain = 0.05%
Differential phase = 0.05
Applications
Video amplifiers
PCMCIA applications
A/D drivers
Line drivers
Portable computers
High speed communications
RGB printers, FAX, scanners
Broadcast equipment
Active filtering
Ordering Information
Part No
Package
Tape & Reel
Outline #
EL2250CN
8-Pin PDIP
-
MDP0031
EL2250CS
8-Pin SO
-
MDP0027
EL2250CS-T7
8-Pin SO
7"
MDP0027
EL2250CS-T13
8-Pin SO
13"
MDP0027
EL2450CN
14-Pin PDIP
-
MDP0031
EL2450CS
14-Pin SO
-
MDP0027
EL2450CS-T7
14-Pin SO
7"
MDP0027
EL2450CS-T13
14-Pin SO
13"
MDP0027
EL2250C, EL2450C
125MHz Single Supply Dual/Quad Op Amps
S
e
p
t
e
m
b
e
r
2
6
,
2
0
0
1
2
EL2250C, EL2450C
125MHz Single Supply Dual/Quad Op Amps
E
L
2
2
5
0
C
,
E
L
2
4
5
0
C
Absolute Maximum Ratings
(T
A
= 25C)
Supply Voltage between V
S
and GND
+12.6V
Input Voltage (IN+, IN-)
GND-0.3V,V
S
+0.3V
Differential Input Voltage
6V
Maximum Output Current
90mA
Output Short Circuit Duration
(Note 1)
Power Dissipation
See Curves
Storage Temperature Range
-65C to +150C
Ambient Operating Temperature Range
-40C to +85C
Operating Junction Temperature
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
.
DC Electrical Characteristics
V
S
= +5V, GND = 0V, T
A
= 25C, V
CM
= 1.5V, V
OUT
= 1.5V, unless otherwise specified.
Parameter
Description
Test Conditions
Min
Typ
Max
Unit
V
OS
Offset Voltage
EL2250C
-2
2
mV
EL2450C
-4
4
mV
TCV
OS
Offset Voltage Temperature Coefficient
Measured from T
MIN
to T
MAX
10
V/C
IB
Input Bias Current
V
IN
= 0V
-5.5
-10
A
I
OS
Input Offset Current
V
IN
= 0V
-750
150
750
nA
TCI
OS
Input Bias Current Temperature Coefficient
Measured from T
MIN
to T
MAX
50
nA/C
PSRR
Power Supply Rejection Ratio
V
S
= +2.7V to +12V
55
70
dB
CMRR
Common Mode Rejection Ratio
VCM = 0V to +3.8V
55
65
dB
VCM = 0V to +3.0V
55
70
dB
CMIR
Common Mode Input Range
0
V
S
-1.2
V
R
IN
Input Resistance
Common Mode
1
2
M
C
IN
Input Capacitance
SO Package
1
pF
PDIP Package
1.5
pF
R
OUT
Output Resistance
A
V
= +1
40
m
I
S
Supply Current (per amplifier)
V
S
= +12V
5
6.5
mA
PSOR
Power Supply Operating Range
2.7
12.0
V
DC Electrical Characteristics
V
S
= +5V, GND = 0V, T
A
= 25C, V
CM
= +1.5V, V
OUT
= +1.5V, unless otherwise specified.
Parameter
Description
Test Conditions
Min
Typ
Max
Unit
AVOL
Open Loop Gain
V
S
= +12V, V
OUT
= +2V to +9V, R
L
= 1k
to GND
60
80
dB
V
OUT
= +1.5V to +3.5V, R
L
= 1k
to GND
70
dB
V
OUT
= +1.5V to +3.5V, R
L
= 150
to
GND
60
dB
V
OP
Positive Output
Voltage Swing
V
S
= +12V, A
V
= +1, R
L
= 1k
to 0V
10.8
V
V
S
= +12V, A
V
= +1, R
L
= 150
to 0V
9.6
10.0
V
V
S
= 5V, A
V
= +1, R
L
= 1k
to 0V
4.0
V
V
S
= 5V, A
V
= +1, R
L
= 150
to 0V
3.4
3.8
V
V
S
= +3V, A
V
= +1, R
L
= 150
to 0V
1.8
1.95
V
3
EL2250C, EL2450C
125MHz Single Supply Dual/Quad Op Amps
E
L
2
2
5
0
C
,
E
L
2
4
5
0
C
V
ON
Negative Output
Voltage Swing
V
S
= +12V, A
V
= +1, R
L
= 150
to 0V
5.5
8
mV
V
S
= 5V, A
V
= +1, R
L
= 1k
to 0V
-4.0
V
V
S
= 5V, A
V
= +1, R
L
= 150
to 0V
-3.7
-3.4
V
I
OUT
Output Current
[1]
V
S
= 5V, A
V
= +1, R
L
= 10
to 0V
75
100
mA
V
S
= 5V, A
V
= +1, R
L
= 50
to 0V60V
mA
1. Internal short circuit protection circuitry has been built into the EL2250C/EL2450C; see the Applications section
DC Electrical Characteristics
V
S
= +5V, GND = 0V, T
A
= 25C, V
CM
= +1.5V, V
OUT
= +1.5V, unless otherwise specified.
Parameter
Description
Test Conditions
Min
Typ
Max
Unit
Closed Loop AC Electrical Characteristics
V
S
= +5V, GND = 0V, T
A
= 25C, V
CM
= +1.5V, V
OUT
= +1.5V, A
V
= +1, R
F
= 0
, R
L
= 150
to GND pin, unless otherwise specified.
[1]
Parameter
Description
Test Conditions
Min
Typ
Max
Unit
BW
-3dB Bandwidth
(V
OUT
=400mVp-p)
V
S
= +5V, A
V
= +1, R
F
= 0
125
MHz
V
S
= +5V, A
V
= -1, R
F
= 500
60
MHz
V
S
= +5V, A
V
= +2, R
F
= 500
60
MHz
V
S
= +5V, A
V
= +10, R
F
= 500
6
MHz
V
S
= +12V, A
V
= +1, R
F
= 0
150
MHz
V
S
= +3V, A
V
= +1, R
F
= 0
100
MHz
BW
0.1dB Bandwidth
(V
OUT
=400mVp-p)
V
S
= +12V, A
V
= +1, R
F
= 0
25
MHz
V
S
= +5V, A
V
= +1, R
F
= 0
30
MHz
V
S
= +3V, A
V
= +1, R
F
= 0
20
MHz
GBWP
Gain Bandwidth Product
V
S
= +12V, @ A
V
= +10
60
MHz
PM
Phase Margin
R
L
= 1k
, C
L
= 6pF
55
SR
Slew Rate
V
S
= +10V, R
L
= 150
, V
OUT
= 0V to +6V
200
275
V/s
V
S
= +5V, R
L
= 150
, V
OUT
= 0V to +3V
300
V/s
t
R
, t
F
Rise Time, Fall Time
0.1V Step
2.8
ns
OS
Overshoot
0.1V Step
10
%
t
PD
Propagation Delay
0.1V Step
3.2
ns
t
S
0.1% Settling Time
V
S
= 5V, R
L
= 500
, A
V
= +1, V
OUT
=
3V
40
ns
0.01% Settling Time
V
S
= 5V, R
L
= 500
, A
V
= +1, V
OUT
=
3V
75
ns
dG
Differential Gain
[2]
A
V
= +2, R
F
= 1k
0.05
%
dP
Differential Phase
[2]
A
V
= +2, R
F
= 1k
0.05
e
N
Input Noise Voltage
f = 10kHz
48
nV/
Hz
i
N
Input Noise Current
f = 10kHz
1.25
pA/
Hz
1. All AC tests are performed on a "warmed up" part, except slew rate, which is pulse tested
2. Standard NTSC signal = 286mV
P-P
, f = 3.58MHz, as V
IN
is swept from 0.6V to 1.314V; R
L
is DC coupled
4
EL2250C, EL2450C
125MHz Single Supply Dual/Quad Op Amps
E
L
2
2
5
0
C
,
E
L
2
4
5
0
C
Typical Performance Curves
Non-Inverting Frequency Response
(Gain)
Non-Inverting Frequency Response
(Phase)
3dB Bandwidth vs Temperature for Non-
Inverting Gains
3dB Bandwidth vs Temperature for
Inverting Gains
Inverting Frequency Response (Phase)
Inverting Frequency Response (Gain)
Frequency Response for Various R
L
Frequency Response for Various C
L
Non-Inverting Frequency Response vs
Common Mode Voltage
5
EL2250C, EL2450C
125MHz Single Supply Dual/Quad Op Amps
E
L
2
2
5
0
C
,
E
L
2
4
5
0
C
3dB Bandwidth vs Supply Voltage for
Non-Inverting Gains
Frequency Response for Various Supply
Voltages, A
V
= + 1
PSSR and CMRR vs Frequency
PSRR and CMRR vs Die Temperature
Frequency Response for Various Supply
Voltages, A
V
= + 2
3dB Bandwidth vs Supply Voltage for
Inverting Gains
Open Loop Gain and Phase vs Frequency
Open Loop Voltage Gain vs Die
Temperature
Closed Loop Output Impedance vs
Frequency
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