Dual/Quad Low-Power 100MHz Gain-of-2 Stable Op Amp
Features
• 100MHz gain-bandwidth at gain-
of-2
• Gain-of-2 stable
• Low supply current (per amplifier)
= 5.2mA at V
S
= ±15V
• Wide supply range
= ±2V to ±18V dual-supply
= 2.5V to 36V single-supply
• High slew rate = 275V/µs
• Fast settling = 80ns to 0.1% for a
10V step
• Low differential gain = 0.02% at
A
V
= +2, R
L
= 150Ω
• Low differential phase = 0.07° at
A
V
= +2, R
L
= 150Ω
• Stable with unlimited capacitive
load
• Wide output voltage swing
=±13.6V with V
S
= ±15V,
R
L
= 1000Ω
= 3.8V/0.3V with V
S
= +5V,
R
L
= 500Ω
General Description
The EL2245C/EL2445C are dual and quad versions of the popular
EL2045C. They are high speed, low power, low cost monolithic oper-
ational amplifiers built on Elantec's proprietary complementary
bipolar process. The EL2245C/EL2445C are gain-of-2 stable and fea-
ture a 275V/µs slew rate and 100MHz bandwidth at gain-of-2 while
requiring only 5.2mA of supply current per amplifier.
The power supply operating range of the EL2245C/EL2445C is from
±18V down to as little as ±2V. For single-supply operation, the
EL2245C/EL2445C operate from 36V down to as little as 2.5V. The
excellent power supply operating range of the EL2245C/EL2445C
makes them an obvious choice for applications on a single +5V or
+3V supply.
The EL2245C/EL2445C also feature an extremely wide output volt-
age swing of ±13.6V with V
S
= ±15V and R
L
= 1000Ω. At ±5V,
output voltage swing is a wide ±3.8V with R
L
= 500Ω and ±3.2V with
R
L
= 150Ω. Furthermore, for single-supply operation at +5V, output
voltage swing is an excellent 0.3V to 3.8V with R
L
= 500Ω.
At a gain of +2, the EL2245C/EL2445C have a -3dB bandwidth of
100MHz with a phase margin of 50°. They can drive unlimited load
capacitance, and because of their conventional voltage-feedback
topology, the EL2245C/EL2445C allow the use of reactive or non-lin-
ear elements in their feedback network. This versatility combined with
low cost and 75mA of output-current drive make the
EL2245C/EL2445C an ideal choice for price-sensitive applications
requiring low power and high speed.
Applications
•
•
•
•
•
•
•
•
•
•
•
Video amplifier
Single-supply amplifier
Active filters/integrators
High-speed sample-and-hold
High-speed signal processing
ADC/DAC buffer
Pulse/RF amplifier
Pin diode receiver
Log amplifier
Photo multiplier amplifier
Difference amplifier
Connection Diagrams
EL2245CN/CS Dual
EL2445CN/CS Quad
September 26, 2001
Ordering Information
Part No.
EL2245CN
EL2245CS
EL2445CN
EL2445CS
Temp. Range
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
Package
8-Pin P-DIP
8-Lead SO
14-Pin P-DIP
14-Lead SO
Outline #
MDP0031
MDP0027
MDP0031
MDP0027
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.
Dual/Quad Low-Power 100MHz Gain-of-2 Stable Op Amp
Absolute Maximum Ratings
(T
Supply Voltage (V
S
)
Peak Output Current (I
OP
)
Output Short-Circuit Duration
A heat-sink is required to keep junction temperature below
absolute maximum when an output is shorted.
A
= 25°C)
±18V or 36V
Short-Circuit Protected
Infinite
Input Voltage (V
IN)
±V
S
Differential Input Voltage (dV
IN
)
Power Dissipation (P
D
)
Operating Temperature Range (T
A
)
Operating Junction Temperature (T
J
)
Storage Temperature (T
ST
)
±10V
See Curves
0°C to +75°C
150°C
-65°C to +150°C
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
= ±15V, R
L
= 1000Ω, unless otherwise specified
Parameter
V
OS
TCV
OS
I
B
Description
Input Offset
Voltage
Average Offset Voltage Drift
Input Bias
Current
V
S
= ±5V
I
OS
Input Offset
Current
Average Offset Current Drift
Open-Loop Gain
V
S
= ±15V
V
S
= ±5V
TCI
OS
A
VOL
[1]
Condition
V
S
= ±15V
[1]
Temp
25°C
T
MIN
, T
MAX
All
25°C
T
MIN
, T
MAX
25°C
25°C
T
MIN
, T
MAX
25°C
All
25°C
T
MIN
, T
MAX
25°C
25°C
25°C
T
MIN
, T
MAX
25°C
T
MIN
, T
MAX
25°C
25°C
25°C
25°C
T
MIN
, T
MAX
25°C
25°C
25°C
25°C
T
MIN
, T
MAX
25°C
T
MIN
, T
MAX
Min
Typ
0.5
10.0
2.8
2.8
50
50
0.3
Max
4.0
6.0
8.2
9.2
300
400
Unit
mV
mV
µV/°C
µA
µA
µA
nA
nA
nA
nA/°C
V/V
V/V
V/V
V/V
dB
dB
dB
dB
V
V
V
V
V
V
V
V
V
V
mA
mA
V
S
= ±15V
V
S
= ±15V,V
OUT
= ±10V, R
L
= 1000Ω
V
S
= ±5V, V
OUT
= ±2.5V, R
L
= 500Ω
V
S
= ±5V, V
OUT
= ±2.5V, R
L
= 150Ω
1500
1500
3000
2500
1750
PSRR
CMRR
CMIR
Power Supply
Rejection Ratio
Common-Mode
Rejection Ratio
Common-Mode
Input Range
Output Voltage
Swing
V
S
= ±5V to ±15V
V
CM
= ±12V, V
OUT
= 0V
V
S
= ±15V
V
S
= ±5V
V
S
= +5V
V
S
= ±15V, R
L
= 1000Ω
V
S
= ±15V, R
L
= 500Ω
V
S
= ±5V, R
L
= 500Ω
V
S
= ±5V, R
L
= 150Ω
V
S
= +5V, R
L
= 500Ω
65
60
70
70
80
90
±14.0
±4.2
4.2/0.1
V
OUT
±13.4
±13.1
±12.0
±3.4
3.6/0.4
3.5/0.5
40
35
±13.6
±13.4
±3.8
±3.2
3.8/0.3
75
5.2
7
7.6
7.6
5.0
I
SC
I
S
Output Short
Circuit Current
Supply Current
(Per Amplifier)
V
S
= ±15V, No Load
25°C
T
MIN
T
MAX
mA
mA
mA
mA
V
S
= ±5V, No Load
25°C
2
EL2245C, EL2445C
EL2245C, EL2445C
Dual/Quad Low-Power 100MHz Gain-of-2 Stable Op Amp
DC Electrical Characteristics (Continued)
V
S
= ±15V, R
L
= 1000Ω, unless otherwise specified
Parameter
R
IN
C
IN
R
OUT
PSOR
Description
Input Resistance
Input Capacitance
Output Resistance
Power-Supply
Operating Range
Differential
Common-Mode
A
V
= +1@ 10MHz
A
V
= +1
Dual-Supply
Single-Supply
Condition
Temp
25°C
25°C
25°C
25°C
25°C
25°C
±2.0
2.5
Min
Typ
150
15
1.0
50
±18.0
36.0
Max
Unit
kΩ
MΩ
pF
mΩ
V
V
1. Measured from T
MIN
to T
MAX
.
Closed-Loop AC Electrical Characteristics
V
S
= ±15V, A
V
= +2, R
L
= 1000Ω unless otherwise specified
Parameter
BW
Description
-3dB Bandwidth
(V
OUT
= 0.4V
PP
)
Condition
V
S
= ±15V, A
V
= +2
V
S
= ±15V, A
V
= -1
V
S
= ±15V, A
V
= +5
V
S
= ±15V, A
V
= +10
V
S
= ±15V, A
V
= +20
V
S
= ±5V, A
V
= +2
GBWP
PM
CS
SR
FPBW
t
r
, t
f
OS
t
PD
t
s
dG
dP
eN
iN
CI STAB
Gain-Bandwidth Product
Phase Margin
Channel Separation
Slew Rate
[1]
Full-Power
Bandwidth
[2]
V
S
= ±15V
V
S
= ±5V
R
L
= 1 kΩ, C
L
= 10pF
f = 5MHz
V
S
= ±15V, R
L
= 1000Ω
V
S
= ±5V, R
L
= 500Ω
V
S
= ±15V
V
S
= ±5V
Rise Time, Fall Time
Overshoot
Propagation Delay
Settling to +0.1%
(A
V
= +1)
Differential Gain
Differential Phase
[3]
[3]
Temp
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
Min
Typ
100
75
20
10
5
75
200
150
50
85
Max
Unit
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
°
dB
V/µs
V/µs
MHz
MHz
ns
%
ns
ns
ns
%
°
nV√Hz
pA√Hz
pF
200
3.2
275
200
4.4
12.7
3.0
20
2.5
80
60
0.02
0.07
15.0
1.50
Infinite
0.1V Step
0.1V Step
V
S
= ±15V, 10V Step
V
S
= ±5V, 5V Step
NTSC/PAL
NTSC/PAL
10kHz
10kHz
A
V
= +1
Input Noise Voltage
Input Noise Current
Load Capacitance Stability
1. Slew rate is measured on rising edge.
2. For V
S
= ±15V, V
OUT
= 20V
PP
. For V
S
= ±5V, V
OUT
= 5V
PP
. Full-power bandwidth is based on slew rate measurement using: FPBW = SR/(2π *
Vpeak).
3. Video Performance measured at V
S
= ±15V, A
V
= +2 with 2 times normal video level across R
L
= 150Ω. This corresponds to standard video levels
across a back-terminated 75Ω load. For other values of R
L
, see curves.
3
EL2245C, EL2445C
EL2245C, EL2445C
Dual/Quad Low-Power 100MHz Gain-of-2 Stable Op Amp
Test Circuit
4
EL2245C, EL2445C
EL2245C, EL2445C
Dual/Quad Low-Power 100MHz Gain-of-2 Stable Op Amp
