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PDF LM248 Data sheet ( Hoja de datos )
| Número de pieza | LM248 | |
| Descripción | Differential Input Operational Amplifiers | |
| Fabricantes | Motorola Semiconductors | |
| Logotipo |  |
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DifferentialĂInput
OperationalĂAmplifiers
The LM348 series is a true quad MC1741. Integrated on a single
monolithic chip are four independent, low power operational amplifiers which
have been designed to provide operating characteristics identical to those of
the industry standard MC1741, and can be applied with no change in circuit
performance. In addition, the total supply current for all four amplifiers is
comparable to the supply current of a single MC1741. Other features include
input offset currents and input bias currents which are much less than the
MC1741 industry standard.
The LM348 can be used in applications where amplifier matching or high
packing density is important. Other applications include high impedance
buffer amplifiers and active filter amplifiers.
• Each Amplifier is Functionally Equivalent to the MC1741
• Low Input Offset and Input Bias Currents
• Class AB Output Stage Eliminates Crossover Distortion
• Pin Compatible with MC3403 and LM324
• True Differential Inputs
• Internally Frequency Compensated
• Short Circuit Protection
• Low Power Supply Current (0.6 mA/Amplifier)
Order this document by LM348/D
LM348
LM248
DIFFERENTIAL INPUT
OPERATIONAL AMPLIFIERS
SEMICONDUCTOR
TECHNICAL DATA
14
1
N SUFFIX
PLASTIC PACKAGE
CASE 646
14
1
D SUFFIX
PLASTIC PACKAGE
CASE 751A
(SO–14)
Representative Schematic Diagram
(1/4 of Circuit Shown)
Noninverting
Input
Inverting
Input
4.5 k
39 k 30 pF
7.5 k
10 k 50 k 1.0 k 5.0 k
50 k 50
MOTOROLA ANALOG IC DEVICE DATA
PIN CONNECTIONS
VCC
25
Output
50
VEE
Out 1 1
Inputs 1
2 *)1
3
VCC 4
Inputs 2
5
6
)*2
Out 2 7
14 Out 4
13
*)4
12
Inputs 4
11 VEE
10
)*3
9
Inputs 3
8 Out 3
(Top View)
ORDERING INFORMATION
Device
Operating
Temperature Range
Package
LM248N
LM348D
LM348N
TA = –25° to +85°C
TA = 0° to +70°C
Plastic DIP
SO–14
Plastic DIP
© Motorola, Inc. 1995
1
1 page  
LM348 LM248
Figure 12. High Impedance Instrumentation Buffer/Filter
+
1/4
LM348
–
VID
–
1/4
LM348
+
R4
R1
–
1/4
LM348
+
R2
R3
C1
R5 R6
+
1/4
C2 LM348
–
Vref =
1
2
VCC
Vref
Figure 13. Function Generator
Triangle Wave
Output
+
1/4
LM348
–
R3
75 k R1
100 k
C Vref
Rf
f
=
R1 +RC
4 CRf R1
if
R2 R1
R3 = R2 +R1
R2
300 k
+
1/4
LM348
–
Square Wave
Output
C1
Vin
R2
R
C
–
1/4
LM348
+
R = 160 kΩ
C = 0.001 µF
R1 = 1.6 MΩ
R2 = 1.6 MΩ
R3 = 1.6 MΩ
Vref
R2
Vref
=
1
2
VCC
Figure 14. Bi–Quad Filter
R
C
R
–
1/4
LM348
+
Vref
Bandpass
R1 Output
100 k
R3
–
1/4
LM348
+
Vref
100 k
–
1/4
LM348
+
Vref
C1
fo
=
1
2 π RC
R1 = QR
R2 =
R1
TBP
R3 = TN R2
C1 = 10C
For : fo = 1.0 kHz
Q = 10
TBP = 1
TN = 1
Notch Output
Where: TBP = Center Frequency Gain
TN = Passband Notch Gain
MOTOROLA ANALOG IC DEVICE DATA
5
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet LM248.PDF ] | |
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