LM146
LM246
LM346
PROGRAMMABLE
QUAD BIPOLAR OPERATIONAL AMPLIFIER
s
PROGRAMMABLE ELECTRICAL CHARAC-
s
s
s
s
s
s
s
TERISTICS
LOW SUPPLY CURRENT (250碌A(chǔ)/amplifier)
GAIN-BANDWITH PRODUCT : 1MHz
LARGE DC VOLTAGE GAIN : 120dB
LOW NOISE VOLTAGE : 28nV/鈭欻z
WIDE POWER SUPPLY RANGE /
鹵1.5V
to
鹵22V
CLASSE AB OUTPUT STAGE. NO
CROSS-OVER DISTORTION
OVERLOAD PROTECTION FOR INPUTS
AND OUTPUTS
N
DIP16
(Plastic Package)
DESCRIPTION
The LM346 consists of four independent, high
gain, internally compensated, low power program-
mable amplifiers. Two external resistors (R
set
) 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 (I
set
= 10碌A(chǔ))
Gain bandwith product = 1MHz (I
set
= 10碌A(chǔ))
Slew rate = 0.5V/碌s (I
set
= 10碌螒)
Input bias current
鈮?0nA
(I
set
= 10碌螒)
I
set
= current into pin 8 and pin 9 (see schematic
diagram)
I
Vcc+
鈥?/div>
Vcc
-
鈥?/div>
0.6 V
= --------------
---------------------
-----------------
-
se t
R
set
D
SO16
(Plastic Micropackage)
PIN CONNECTIONS
(top view)
O utput 1
Inv ertin g Inpu t 1
N on-inv erting inpu t 1
V CC
+
N on-inv erting Inpu t 2
Inve rting I nput 2
O utp ut 2
1
16
-
+
-
+
O utp ut 4
Inverti ng In put 4
No n-inv erting inpu t 4
V CC
-
N on-i nverti ng in put 3
Inv erting inpu t 3
O utp ut 3
Set
2
3
4
5
6
7
8
15
14
13
12
11
10
9
ORDER CODE
Part
Number
LM146
Temperature
Range
-55擄C, +125擄C
Package
N
鈥?/div>
鈥?/div>
鈥?/div>
D
鈥?/div>
鈥?/div>
鈥?/div>
Set
LM246
-40擄C, +105擄C
LM346
0擄C, +70擄C
Example :
LM246N
N =
Dual in Line Package (DIP)
D =
Small Outline Package (SO) - also available in Tape & Reel (DT)
April 2002
1/5
LM346DT相關(guān)型號(hào)PDF文件下載
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型號(hào)
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描述
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