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參數資料
| 型號： | LM246 |
| 廠商： | 意法半導體 |
| 英文描述： | Programmable Quad Bipolar OP AMP(可編程雙極型四運放) |
| 中文描述： | 可編程四雙極型運算放大器（可編程雙極型四運放） |
| 文件頁數： | 1/9頁 |
| 文件大小： | 142K |
| 代理商： | LM246 |
November 1997
PROGRAMMABLE
QUAD BIPOLAR OPERATIONAL AMPLIFIERS
.
PROGRAMMABLE ELECTRICAL CHARAC-
TERISTICS
.
BATTERYPOWERED OPERATION
.
LOW SUPPLY CURRENT (250
μ
A/amplifier)
.
GAIN-BANDWIDTH PRODUCT : 1MHz
.
LARGEDC VOLTAGEGAIN : 120dB
.
LOW NOISE VOLTAGE: 28nV/VHz
.
WIDE POWER SUPPLYRANGE:
±
1.5V to
±
22V
.
CLASSE AB OUTPUT STAGE. NO CROSS-
OVER DISTORTION
.
OVERLOADPROTECTION FORINPUTS AND
OUTPUTS
DESCRIPTION
The LM346consistsof fourindependent,highgain,
internally compensated, low power programmable
amplifiers. Two external resistors (R
set
) allow the
user to program the gain-bandwith product, slew
rate, supply current, input bias current,input offset
current and input noise. For example the user can
trade-off supply current for bandwidth or optimize
noisefigurefora given sourceresistance.Inasimi-
lar way other amplifiercharacteristics can be
tailored to the application.
Except for thetwo programming pins at the end of
the packagethe LM346 pin out is the same as the
LM324and LM348.
PROGRAMMING EQUATIONS :
Total supply current = 1mA (I
set
= 10
μ
A)
Gain-bandwidthproduct= 1MHz (I
set
= 10
μ
A)
Slewrate = 0.5V/
μ
s (I
set
= 10
μ
A)
Input bias current
≈
30 nA (I
set
= 10
μ
A)
I
set
= current into pin8 andpin 9
(see schematic diagram)
I
set
=
V
CC
+
V
CC
0.6V
R
set
4
5
6
7
9
10
11
12
13
15
1
2
3
8
16
14
Output1
Invertinginput 1
Non-invertinginput1
Non-invertinginput 2
Invertinginput 2
Output2
Set
Output4
Invertinginput 4
Non-invertinginput4
VCC
Non-invertinginput3
Invertinginput 3
Output3
Set
VCC+
PIN CONNECTIONS
(top view)
ORDER CODES
Part
Number
Temperature
Range
Package
N
D
LM146
–55
o
C, +125
o
C
LM246
–40
o
C, +105
o
C
LM346
0
o
C, +70
o
C
Example :
LM246N
N
DIP16
(Plastic Package)
D
SO16
(Plastic Micropackage)
LM146
LM246 - LM346
1/9
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