LMF60CIN-100 National Semiconductor, LMF60CIN-100 Datasheet

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LMF60CIN-100

Manufacturer Part Number
LMF60CIN-100
Description
IC HIPEREM 60RD SW CAP FIL 14DIP
Manufacturer
National Semiconductor
Datasheet

Specifications of LMF60CIN-100

Filter Type
Butterworth, Lowpass Switched Capacitor
Frequency - Cutoff Or Center
30kHz
Number Of Filters
1
Max-order
6th
Voltage - Supply
4 V ~ 14 V, ±2 V ~ 7.5 V
Mounting Type
*
Package / Case
*
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
*LMF60CIN-100
C 1996 National Semiconductor Corporation
LMF60 High Performance
6th-Order Switched Capacitor
Butterworth Lowpass Filter
General Description
The LMF60 is a high performance precision 6th-order But-
terworth lowpass active filter It is fabricated using Nation-
al’s LMCMOS process an improved silicon-gate CMOS pro-
cess specifically designed for analog products Switched-
capacitor techniques eliminate external component require-
ments and allow a clock-tunable cutoff frequency The ratio
of the clock frequency to the low-pass cutoff frequency is
internally set to 50 1 (LMF60-50) or 100 1 (LMF60-100) A
Schmitt trigger clock input stage allows two clocking op-
tions either self-clocking (via an external resistor and ca-
pacitor) for stand-alone applications or for tighter cutoff fre-
quency control a TTL or CMOS logic compatible clock can
be directly applied The maximally flat passband frequency
response together with a DC gain of 1V V allows cascading
LMF60 sections for higher-order filtering In addition to the
filter two independent CMOS op amps are included on the
die and are useful for any general signal conditioning appli-
cations The LMF60 is pin- and functionally-compatible with
the MF6 but provides improved performance
Block and Connection Diagrams
TRI-STATE is a registered trademark of National Semiconductor Corporation
TL H 9294
Features
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Applications
Y
Y
Y
Y
Y
Y
Cutoff frequency range of 0 1 Hz to 30 kHz
Cutoff frequency accuracy of
Low offset voltage
Low clock feedthrough of 10 mV
Dynamic range of 88 dB typical
Two uncommitted op amps available
No external components required
14-pin DIP or 14-pin wide-body S O package
Single Dual Supply Operation
Cutoff frequency set by external or internal clock
Pin-compatible with the MF6
Communication systems
Audio filtering
Anti-alias filtering
Data acquisition noise filtering
Instrumentation
High-order tracking filters
a
4V to
TL H 9294 – 1
RRD-B30M56 Printed in U S A
a
14V (
g
2V to
g
See NS Package Number M14B
See NS Package Number N14A
See NS Package Number J14A
Order Number LMF60CIWM-50
100 mV maximum
Order Number LMF60CMJ-50
Order Number LMF60CIN-50
g
or LMF60CMJ100 883)
(5962-9096 701MCA or
7V)
(5962-9096 702MCA
or LMF60CIWM-100
LMF60CMJ50 883)
LMF60CMJ-100 or
or LMF60CIN-100
g
All Packages
1 0% maximum
Top View
p–p
typical
g
5V supply
TL H 9294 – 2
May 1996

Related parts for LMF60CIN-100

LMF60CIN-100 Summary of contents

Page 1

... Order Number LMF60CMJ-50 (5962-9096 701MCA or LMF60CMJ50 883) LMF60CMJ-100 or (5962-9096 702MCA or LMF60CMJ100 883) See NS Package Number J14A Order Number LMF60CIWM- 9294 – LMF60CIWM-100 See NS Package Number M14B Order Number LMF60CIN-50 or LMF60CIN-100 See NS Package Number N14A RRD-B30M56 Printed May 1996 5V supply 9294 – 2 ...

Page 2

... SO Package Vapor Phase (60 sec ) Infrared (15 sec ) (Note Operating Ratings 5 mA Temperature Range 20 mA LMF60CIN-50 LMF60CIN-100 500 mW LMF60CIJ-50 LMF60CIJ-100 150 LMF60CIWM-50 2000V LMF60CIWM-100 1700V LMF60CMJ-50 LMF60CMJ-100 LMF60CMJ50 883 LMF60CMJ100 883 Supply Voltage (V 500 kHz (Note 7) unless otherwise specified Boldface limits apply for T ...

Page 3

Filter Electrical Characteristics The following specifications apply for f CLK all other limits MIN MAX A J Symbol Parameter Clock ...

Page 4

Op Amp Electrical Characteristics Boldface limits apply for Symbol Parameter Input Offset Voltage OS I Input Bias Current B CMRR Common Mode Rejection ...

Page 5

Logic Input-Output Characteristics The following specifications apply for all other limits MIN MAX A Symbol Parameter SCHMITT TRIGGER V Positive Going Input T a Threshold Voltage V Negative Going ...

Page 6

Typical Performance Characteristics f f Deviation CLK C vs Power Supply Voltage f f Deviation CLK C vs Power Supply Voltage DC Gain Deviation vs Power Supply Voltage http www national com f f Deviation f CLK C CLK vs ...

Page 7

Typical Performance Characteristics DC Gain Deviation vs Power Supply Voltage DC Offset Voltage Deviation vs Power Supply Voltage Positive Voltage Swing vs Power Supply Voltage (Continued) DC Gain Deviation DC Gain Deviation vs Temperature vs Clock Frequency Power Supply Current ...

Page 8

Typical Performance Characteristics Negative Voltage Swing vs Temperature Crosstalk from Filter to Op Amps http www national com (Continued) CLK R Trigger Threshold Schmitt Trigger Threshold vs Power Supply Voltage vs Power Supply Voltage Crosstalk from Either Op Amp to ...

Page 9

Crosstalk Test Circuits Pin Description (Pin Numbers) Pin Description FILTER OUT (3) The output of the lowpass filter will typi- cally swing to within 1V of each supply rail FILTER IN (8) The input to the lowpass filter To mini- ...

Page 10

LMF60 Application Hints The LMF60 is comprised of a non-inverting unity gain low- pass sixth-order Butterworth switched capacitor filter sec- tion and two undedicated CMOS Op-Amps The switched- capacitor topology makes the cutoff frequency (where the gain drops ...

Page 11

LMF60 Application Hints If the LMF60-50 or the LMF60-100 were set up for a cutoff frequency of 10 kHz the input impedance would kHz In this ...

Page 12

LMF60 Application Hints FIGURE 2 Dual Supply Operation LMF60 Driven with CMOS Logic Level Clock ( where http www national com (Continued) ...

Page 13

LMF60 Application Hints 1 3 OFFSET ADJUST The V ADJ pin is used in adjusting the output offset level OS of the filter section If this pin is not used it must be tied to the analog ground ...

Page 14

Designing with the LMF60 Given any lowpass filter specification two equations will come in handy in trying to determine whether the LMF60 will do the job The first equation determines the order of the lowpass filter required 0 ...

Page 15

Designing with the LMF60 FIGURE 10a One LMF60-50 vs Two LMF60-50s Cascaded (Continued) FIGURE 9 Cascading Two LMF60s TL H 9294– 23 FIGURE 10b Phase Response of Two Cascaded LMF60-50s 9294 – ...

Page 16

Designing with the LMF60 FIGURE 11b LMF60-50 ‘‘Notch’’ Filter Amplitude Response http www national com (Continued) FIGURE 11a ‘‘Notch’’ Filter TL H 9294– 9294 – 25 ...

Page 17

Designing with the LMF60 2 4 CHANGING CLOCK FREQUENCY INSTANTANEOUSLY The LMF60 will respond well to a sudden change in clock frequency Distortion in the output signal occurs at the tran- sition of the clock frequency and lasts ...

Page 18

Designing with the LMF60 when Design Procedure pick ...

Page 19

Physical Dimensions inches (millimeters) unless otherwise noted Order Number LMF60CMJ-50 LMF60CMJ50 883 LMF60CMJ-100 or LMF60CMJ100 883 Order Number LMF60CIWM-50 or LMF60CIWM-100 Cavity Dual-In-Line Package (J) NS Package Number J14A Small Outline Wide Body (M) NS Package Number M14B 19 http ...

Page 20

... Physical Dimensions inches (millimeters) unless otherwise noted (Continued) Order Number LMF60CIN-50 or LMF60CIN-100 LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL SEMICONDUCTOR CORPORATION As used herein ...

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