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PDF LM146 Data sheet ( Hoja de datos )
| Número de pieza | LM146 | |
| Descripción | Programmable Quad Operational Amplifiers | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LM146 (archivo pdf) en la parte inferior de esta página. Total 17 Páginas | ||
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May 1999
LM146/LM346
Programmable Quad Operational Amplifiers
General Description
The LM146 series of quad op amps consists of four indepen-
dent, high gain, internally compensated, low power, pro-
grammable amplifiers. Two external resistors (RSET) allow
the user to program the gain bandwidth product, slew rate,
supply current, input bias current, input offset current and in-
put noise. For example, the user can trade-off supply current
for bandwidth or optimize noise figure for a given source re-
sistance. In a similar way, other amplifier characteristics can
be tailored to the application. Except for the two program-
ming pins at the end of the package, the LM146 pin-out is
the same as the LM124 and LM148.
Features
(ISET=10 µA)
n Programmable electrical characteristics
n Battery-powered operation
n Low supply current: 350 µA/amplifier
n Guaranteed gain bandwidth product: 0.8 MHz min
n Large DC voltage gain: 120 dB
n Low noise voltage: 28
n Wide power supply range: ±1.5V to ±22V
n Class AB output stage–no crossover distortion
n Ideal pin out for Biquad active filters
n Input bias currents are temperature compensated
Connection Diagram
Dual-In-Line Package
PROGRAMMING EQUATIONS
Total Supply Current = 1.4 mA (ISET/10 µA)
Gain Bandwidth Product = 1 MHz (ISET/10 µA)
Slew Rate = 0.4V/µs (ISET/10 µA)
Input Bias Current ≅ 50 nA (ISET/10 µA)
ISET = Current into pin 8, pin 9 (see schematic-diagram)
DS005654-1
Top View
Order Number LM146J, LM146J/883,
LM346M or LM346N
See NS Package Number
J16A, M16A or N16A
© 1999 National Semiconductor Corporation DS005654
www.national.com
1 page  
Typical Performance Characteristics
Input Bias Current vs ISET
Supply Current vs ISET
Open Loop Voltage Gain
vs ISET
Slew Rate vs ISET
DS005654-44
DS005654-45
Gain Bandwidth Product
vs ISET
Phase Margin vs ISET
DS005654-46
DS005654-47
Input Offset Voltage
vs ISET
DS005654-48
Common-Mode Rejection
Ratio vs ISET
DS005654-49
Power Supply Rejection
Ratio vs ISET
DS005654-50
DS005654-51
DS005654-52
5 www.national.com
5 Page 
Active Filters Applications (Continued)
A Simple-to-Design BP, LP Filter Building Block
DS005654-35
DS005654-14
• If resistive biasing is used to set the LM346 performance, the Qo of this filter building block is nearly insensitive to the op amp’s GBW product temperature
drift; it has also better noise performance than the state variable filter.
Circuit Synthesis Equations
•For the eventual use of amplifier C, see comments on the previous page.
DS005654-36
11 www.national.com
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet LM146.PDF ] | |
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