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參數(shù)資料
| 型號(hào)： | MF10AJ |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | Universal Monolithic Dual Switched Capacitor Filter |
| 中文描述： | DUAL SWITCHED CAPACITOR FILTER, RESISTOR PROGRAMMABLE, UNIVERSAL, CDIP20 |
| 封裝： | 0.300 INCH, CERAMIC, DIP-20 |
| 文件頁數(shù)： | 5/20頁 |
| 文件大?。?/td> | 405K |
| 代理商： | MF10AJ |
Typical Performance Characteristics
(Continued)
vs Clock Frequency
f
CLK
/f
O
Deviation
vs Clock Frequency
f
CLK
/f
O
Deviation
Deviation off
CLK
vs Nominal Q
f
O
Deviation off
CLK
vs Nominal Q
f
O
TL/H/10399–3
Pin Descriptions
LP(1,20), BP(2,19), The second order lowpass, bandpass
N/AP/HP(3,18)
and
notch/allpass/highpass
These outputs can typically sink 1.5 mA
and source 3 mA. Each output typically
swings to within 1V of each supply.
outputs.
INV(4,17)
The inverting input of the summing op-
amp of each filter. These are high im-
pedance inputs, but the non-inverting in-
put is internally tied to AGND, making
INV
A
and INV
B
behave like summing
junctions (low impedance, current in-
puts).
S1(5,16)
S1 is a signal input pin used in the all-
pass filter configurations (see modes 4
and 5). The pin should be driven with a
source impedance of less than 1 k
X
. If
S1 is not driven with a signal it should be
tied to AGND (mid-supply).
S
A/B
(6)
This pin activates a switch that connects
one of the inputs of each filter’s second
summer to either AGND (S
A/B
tied to
V
b
) or to the lowpass (LP) output (S
A/B
tied to V
a
). This offers the flexibility
needed for configuring the filter in its
various modes of operation.
V
A
a
(7),V
D
a
(8)
Analog positive supply and digital posi-
tive supply. These pins are internally
connected through the IC substrate and
therefore V
A
a
and V
D
a
should be de-
rived from the same power supply
source. They have been brought out
separately so they can be bypassed by
separate capacitors, if desired. They
can be externally tied together and by-
passed by a single capacitor.
V
A
b
(14), V
D
b
(13) Analog and digital negative supplies.
The same comments as for V
A
V
D
and
apply here.
5
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