TLC04/MF4A-50, TLC14/MF4A-100
BUTTERWORTH FOURTH-ORDER LOW-PASS
SWITCHED-CAPACITOR FILTERS
SLAS021A – NOVEMBER 1986 – REVISED MARCH 1995
D OR P PACKAGE
(TOP VIEW)
Low Clock-to-Cutoff-Frequency Ratio Error
TLC04/MF4A-50 . . . ±0.8%
TLC14/MF4A-100 . . . ±1%
CLKIN
CLKR
LS
FILTER IN
1
2
3
4
8
7
6
5
Filter Cutoff Frequency Dependent Only on
External-Clock Frequency Stability
V
CC+
AGND
FILTER OUT
Minimum Filter Response Deviation Due to
External Component Variations Over Time
and Temperature
V
CC–
Cutoff Frequency Range From 0.1 Hz
to 30 kHz, V
= ±2.5 V
CC±
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.
Eachfilter 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.
AVAILABLE OPTIONS
PACKAGE
CLOCK-TO-CUTOFF
FREQUENCY RATIO
T
A
SMALL OUTLINE
(D)
PLASTIC DIP
(P)
50:1
100:1
TLC04CD/MF4A-50CD
TLC14CD/MF4A-100CD
TLC04CP/MF4A-50CP
TLC14CP/MF4A-100CP
0°C to 70°C
–40°C to 85°C
–55°C to 125°C
50:1
100:1
TLC04ID/MF4A-50ID
TLC14ID/MF4A-100ID
TLC04IP/MF4A-50IP
TLC14IP/MF4A-100IP
50:1
100:1
TLC04MP/MF4A-50MP
TLC14MP/MF4A-100MP
The D package is available taped and reeled. Add the suffix R to the device type (e.g., TLC04CDR/MF4A-50CDR).
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Copyright 1995, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265