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EL2245C Schematic ( PDF Datasheet ) - Elantec Semiconductor

Teilenummer EL2245C
Beschreibung Dual/Quad Low-Power 100MHz Gain-of-2 Stable Op Amp
Hersteller Elantec Semiconductor
Logo Elantec Semiconductor Logo 




Gesamt 14 Seiten
EL2245C Datasheet, Funktion
EL2245C, EL2445C
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 VS = ±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
AV = +2, RL = 150
• Low differential phase = 0.07° at
AV = +2, RL = 150
• Stable with unlimited capacitive
load
• Wide output voltage swing
=±13.6V with VS = ±15V,
RL = 1000
= 3.8V/0.3V with VS = +5V,
RL = 500
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
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
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 VS = ±15V and RL = 1000. At ±5V,
output voltage swing is a wide ±3.8V with RL = 500and ±3.2V with
RL = 150. Furthermore, for single-supply operation at +5V, output
voltage swing is an excellent 0.3V to 3.8V with RL = 500.
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.
Connection Diagrams
EL2245CN/CS Dual
EL2445CN/CS Quad
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.






EL2245C Datasheet, Funktion
EL2245C, EL2445C
Dual/Quad Low-Power 100MHz Gain-of-2 Stable Op Amp
Gain-Bandwidth Product
vs Supply Voltage
Open-Loop Gain
vs Supply Voltage
Slew-Rate vs
Supply Voltage
Bias and Offset Current
vs Input Common-Mode Voltage
Open-Loop Gain
vs Load Resistance
Voltage Swing
vs Load Resistance
Offset Voltage
vs Temperature
Bias and Output
Current vs Temperature
Supply Current
vs Temperature
Gain-Bandwidth Product
vs Temperature
Open-Loop Gain PSRR
and CMRR vs Temperature
Slew Rate vs
Temperature
6

6 Page









EL2245C pdf, datenblatt
EL2245C, EL2445C
Dual/Quad Low-Power 100MHz Gain-of-2 Stable Op Amp
EL2245C/EL2445C Macromodel
* Connections: +input
* | -input
* | | +Vsupply
* | | | -Vsupply
* | | | | output
* |||||
.subckt M2245 3 2 7 4 6
*
* Input stage
*
ie 7 37 1mA
r6 36 37 400
r7 38 37 400
rc1 4 30 850
rc2 4 39 850
q1 30 3 36 qp
q2 39 2 38 qpa
ediff 33 0 39 30 1.0
rdiff 33 0 1Meg
*
* Compensation Section
*
ga 0 34 33 0 1m
rh 34 0 2Meg
ch 34 0 1.3pF
rc 34 40 1K
cc 40 0 1pF
*
* Poles
*
ep 41 0 40 0 1
rpa 41 42 200
cpa 42 0 1pF
rpb 42 43 200
cpb 43 0 1pF
*
* Output Stage
*
ios1 7 50 1.0mA
ios2 51 4 1.0mA
q3 4 43 50 qp
q4 7 43 51 qn
q5 7 50 52 qn
q6 4 51 53 qp
ros1 52 6 25
ros2 6 53 25
*
* Power Supply Current
*
ips 7 4 2.7mA
*
* Models
*
.model qn npn(is=800E-18 bf=200 tf=0.2nS)
.model qpa pnp(is=864E-18 bf=100 tf=0.2nS)
.model qp pnp(is=800E-18 bf=125 tf=0.2nS)
.ends
12

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