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MF4 Datasheet(PDF) 4 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part No. MF4
Description  MF4 4th Order Switched Capacitor Butterworth Lowpass Filter
Download  14 Pages
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
Logo NSC - National Semiconductor (TI)

MF4 Datasheet(HTML) 4 Page - National Semiconductor (TI)

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Filter Electrical Characteristics (Continued)
The following specifications apply for f
CLK ≤ 250 kHz (Note 5) unless otherwise specified. Boldface limits apply for TMIN
to T
MAX; all other limits TA = TJ = 25˚C.
Parameter
Conditions
Typical
Tested
Design
Unit
(Note 10)
Limit
Limit
(Note 11)
(Note 12)
V
+ = +2.5V, V= −2.5V
Stopband Attenuation (Min)
at 2 fc
−25.0
−24.0
−24.0
dB
DC Offset Voltage
−150
mV
Minimum Output Swing
RL = 10 kΩ
+1.5
+1.0
+1.0
V
−2.2
−1.7
−1.7
V
Output Short Circuit
Source
28
mA
Current (Note 8)
Sink
0.5
mA
Dynamic Range (Note 4)
78
dB
Additional Magnitude
fclk = 250 kHz
Response Test Points
(Note 6)
−7.57
−7.57
dB
(fc = 5 kHz)
f = 6000 Hz
±0.47
±0.47
Magnitude at
f = 4500 Hz
−1.46
−1.46
dB
±0.12
±0.12
(fc = 2.5 kHz)
f = 3000 Hz
Magnitude
dB
f = 2250 Hz
Logic Input-Output Characteristics
The following specifications apply for V
= 0V (Note 7) unless otherwise specified. Boldface limits apply for T
MIN to TMAX; all
other limits T
A = TJ = 25˚C.
Typical
Tested
Design
Parameter
Conditions
(Note 10)
Limit
Limit
Unit
(Note 11)
(Note 12)
SCHMITT TRIGGER
V
T+, Positive Going Threshold
Min
V
+ = 10V
7.0
6.1
6.1
V
Voltage
Max
8.9
Min
V
+ = 5V
3.5
3.1
3.1
V
Max
4.4
4.4
V
T−, Negative Going Threshold
Min
V
+ = 10V
3.0
1.3
1.3
V
Voltage
Max
3.8
3.8
Min
V
+ = 5V
1.5
0.6
0.6
V
Max
1.9
1.9
Hysteresis (V
T+–VT−)
Min
V
+ = 10V
4.0
2.3
2.3
V
Max
7.6
7.6
Min
V
+ = 5V
2.0
1.2
1.2
V
Max
3.8
3.8
Minimum Logical “1” Output Voltage
I
0 = −10 µA
V
+ = 10V
9.0
9.0
V
(pin 2)
V
+ = 5V
4.5
4.5
V
Maximum Logical “0” Output Voltage
I
0 = 10 µA
V
+ = 10V
1.0
1.0
V
(pin 2)
V
+ = 5V
0.5
0.5
V
Minimum Output Source Current
CLK R Shorted
V
+ = 10V
6.0
3.0
3.0
mA
(pin 2)
to Ground
V
+ = 5V
1.5
0.75
0.75
mA
Maximum Output Sink Current
CLK R Shorted
V
+ = 10V
5.0
2.5
2.5
mA
(pin 2)
to V
+
V
+ = 5V
1.3
0.65
0.65
mA
www.national.com
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