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LM246 Folha de dados(PDF) 1 Page - STMicroelectronics

Nome de Peças LM246
Descrição Electrónicos  PROGRAMMABLE QUAD BIPOLAR OPERATIONAL AMPLIFIERS
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

LM246 Folha de dados(HTML) 1 Page - STMicroelectronics

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s PROGRAMMABLE ELECTRICAL CHARAC-
TERISTICS
s LOW SUPPLY CURRENT (250
µA/amplifier)
s GAIN-BANDWITH PRODUCT : 1MHz
s LARGE DC VOLTAGE GAIN : 120dB
s LOW NOISE VOLTAGE : 28nV/
√Hz
s WIDE POWER SUPPLY RANGE / ±1.5V to
±22V
s CLASSE AB OUTPUT STAGE. NO
CROSS-OVER DISTORTION
s OVERLOAD PROTECTION FOR INPUTS
AND OUTPUTS
DESCRIPTION
The LM346 consists of four independent, high
gain, internally compensated, low power program-
mable amplifiers. Two external resistors (Rset) al-
low the user to program the gain-bandwith prod-
uct, slew rate, supply current, input bias current,
input offset current and input noise. For example
the user can trade-off supply current for bandwith
or optimize noise figure for a given source resis-
tance. In a similar way other amplifier characteris-
tics can be tailored to the application.
Except for the two programming pins at the end of
the package the LM346 pin out is the same as the
LM324 and LM348.
PROGRAMMING EQUATIONS :
Total supply current = 1mA (Iset = 10µA)
Gain bandwith product = 1MHz (Iset = 10µA)
Slew rate = 0.5V/
µs (I
set = 10µΑ)
Input bias current
≈30nA (I
set = 10µΑ)
Iset = current into pin 8 and pin 9 (see schematic
diagram)
ORDER CODE
N = Dual in Line Package (DIP))
PIN CONNECTIONS (top view)
Part
Number
Temperature
Range
Package
N
LM146
-55°C, +125°C
LM246
-40°C, +105°C
LM346
0°C, +70°C
Example : LM246N
I
se t
Vcc+
Vcc
-
0.6 V
R
set
-----------------------------------------------------
=
N
DIP16
(Plastic Package)
CC
V
+
1
2
3
4
5
6
7
9
10
11
12
13
14
N o n-in v e rtin g Inp u t 2
-
+
-
+
Ou tp u t 1
N o n-in v e rtin g in put 1
In v e rtin g Inpu t 1
-
CC
V
In v e rtin g Inp ut 2
Ou tp u t 2
8
15
16
Ou tp u t 4
In v e rtin g Inp ut 4
N on-in v e rtin g inp ut 4
N o n -in v e rtin g in p u t 3
In v e rtin g in put 3
Ou tp u t 3
Set
Set
LM146
LM246
LM346
PROGRAMMABLE
QUAD BIPOLAR OPERATIONAL AMPLIFIER
April 2003


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