MF6CWM-50 National Semiconductor, MF6CWM-50 Datasheet - Page 9

• Manufacturer Part Number: MF6CWM-50
• Description: IC FILTER 6TH ORER SW CAP SO14
• Manufacturer: National Semiconductor

Specifications of MF6CWM-50

• Filter Type: Butterworth, Lowpass Switched Capacitor
• Frequency - Cutoff Or Center: 20kHz
• Number Of Filters: 1
• Max-order: 6th
• Voltage - Supply: 5 V ~ 14 V
• Mounting Type: *
• Package / Case: *
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: *MF6CWM-50

Pin Descriptions
Pin
AGND (5)
V
INV1 (13)
V
INV2 (14),
NINV2 (1)
V
CLK IN (9)
CLK R (11)
L. Sh (12)
O1
O2
+
(6), V
(4),
(2),
−
(10)
Description
The analog ground pin. This pin sets
the DC bias level for the filter section
and the non-inverting input of
Op-Amp # 1 and must be tied to the
system ground for split supply
operation or to mid-supply for single
supply operation (see section 1.2).
When tied to mid-supply this pin
should be well bypassed.
V
inverting input of Op-Amp # 1. The
non-inverting input of this Op-Amp is
internally connected to the AGND
pin.
V
inverting input, and NINV2 is the
non-inverting input of Op-Amp # 2.
The positive and negative supply
pins. The total power supply range is
5V to 14V. Decoupling these pins
with 0.1 µF capacitors is highly
recommended.
A CMOS Schmitt-trigger input to be
used with an external CMOS logic
level clock. Also used for
self-clocking Schmitt-trigger oscillator
(see section 1.1).
A TTL logic level clock input when in
split supply operation (
ground. This pin becomes a low
impedance output when L. Sh is tied
to V
the CLK IN pin for a self clocking
Schmitt-trigger oscillator (see section
1.1).
Level shift pin, selects the logic
threshold levels for the desired
clock. When tied to V
internal tri-state
between the Schmitt trigger and the
internal clock level shift stage thus
enabling the CLK IN Schmitt-trigger
input and making the CLK R pin a
low impedance output.
When the voltage level at this input
exceeds [25%(V
internal tri-state buffer is disabled
allowing the CLK R pin to become
the clock input for the internal clock
level shift stage. The CLK R
threshold level is now 2V above the
voltage applied to the L. Sh pin.
Driving the CLK R pin with TTL logic
levels can be accomplished through
the use of split supplies and by tying
the L. Sh pin to system ground.
±
O1
O2
7V) and L. Sh tied to system
−
is the output and INV1 is the
is the output, INV2 is the
. Also used in conjunction with
(Pin Numbers) (Continued)
®
+
buffer stage
− V
−
−
) + V
±
it enables an
2.5V to
−
] the
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