Low Clock-to-Cutoff-Frequency Ratio Error
TLC04/MF4A-50 . . . ±0.8%
TLC14/MF4A-100 . . . ±1%
Filter Cutoff Frequency Dependent Only on
External-Clock Frequency Stability
Minimum Filter Response Deviation Due to
External Component Variations Over Time
and Temperature
Cutoff Frequency Range From 0.1 Hz
to 30 kHz, VCC± = ±2.5 V
5-V to 12-V Operation
Self Clocking or TTL-Compatible and
CMOS-Compatible Clock Inputs
Low Supply-Voltage Sensitivity
Designed to be Interchangeable With
National MF4-50 and MF4-100

description
The TLC04/MF4A-50 and TLC14/MF4A-100 are monolithic Butterworth low-pass switched-capacitor filters.
Each is designed as a low-cost, easy-to-use device providing accurate fourth-order low-pass filter functions in
circuit design configurations.
Each filter features cutoff frequency stability that is dependent only on the external-clock frequency stability. The
cutoff frequency is clock tunable and has a clock-to-cutoff frequency ratio of 50:1 with less than ±0. 8% error
for the TLC04/MF4A-50 and a clock-to-cutoff frequency ratio of 100:1 with less than ±1% error for the
TLC14/MF4A-100. The input clock features self-clocking or TTL- or CMOS-compatible options in conjunction
with the level shift (LS) terminal.
The TLC04C/MF4A-50C and TLC14C/MF4A-100C are characterized for operation from 0°C to 70°C. The
TLC04I/MF4A-50I and TLC14I/MF4A-100I are characterized for operation from –40°C to 85°C. The
TLC04M/MF4A-50M and TLC14M/MF4A-100M are characterized over the full military temperature range of
–55°C to 125°C.