LMF100 - High Performance Dual Switched Capacitor Filter

Datasheet	Packaging	Samples & Pricing	Knowledge Base

Features

•	Wide 4V to 15V power supply range
•	Operation up to 100 kHz
•	Low offset voltage: typically (50:1 or 100:1 mode): Vos1 = ±5 mV Vos2 = ±15 mV Vos3 = ±15 mV
•	Low crosstalk -60 dB
•	Clock to center frequency ratio accuracy ±0.2% typical
•	f₀ × Q range up to 1.8 MHz
•	Pin-compatible with MF10

General Description

The LMF100 consists of two independent general purpose high performance switched capacitor filters. More...

Parameters Values

Temperature Min -40 deg C

Temperature Max 85 deg C

FilterType Universal

Filter Order Max 4

Max PLL Freq 0.1 MHz

Datasheet

RoHS Compliance Information	Size in Kbytes	Date
LMF100 High Performance Dual Switched Capacitor Filter	868 Kbytes	12-Jul-99	Download
LMF100 High Performance Dual Switched Capacitor Filter (Japanese)	580 Kbytes

If you have trouble printing or viewing PDF file(s), see Printing Problems.

Package Availability, Models, Samples & Pricing

Part Number

Package

Factory Lead Time

Models

Samples &
Electronic
Orders

Budgetary Pricing

Std
Pack
Size

Package
Marking
Format

Type

Pins

Spec.

MSL
Rating

Peak
Reflow

RoHS
Report

CAD
Symbols

Weeks

Qty

$US each

LMF100CIWM

SOIC WIDE

NOPB
STD

3
2A

260
220

RoHS

N/A

Full production

N/A

1K+

$2.85

rail
of
36

NSUZXYTTE#
LMF100
CIWM

6 weeks

500

LMF100CIWMX

SOIC WIDE

NOPB
STD

3
2A

260
220

RoHS

N/A

Full production

N/A

1K+

$2.85

reel
of
1000

NSUZXYTTE#
LMF100
CIWM

8 weeks

2000

Obsolete Versions

Obsolete Part	Alternate Part or Supplier	Source	Last Time Buy Date
LMF100ACN	NONE	NONE	08 Sep 1998
LMF100AE/883	NONE	NONE	08 Sep 1998
LMF100AJ/883	NONE	NONE	08 Sep 1998
LMF100CCN	LMF100CIWM	NATIONAL SEMICONDUCTOR	16 Nov 2008
LMF100CIN	NONE	NONE	08 Sep 1998

General Description

The LMF100 consists of two independent general purpose high performance switched capacitor filters. With an external clock and 2 to 4 resistors, various second-order and first-order filtering functions can be realized by each filter block. Each block has 3 outputs. One output can be configured to perform either an allpass, highpass, or notch function. The other two outputs perform bandpass and lowpass functions. The center frequency of each filter stage is tuned by using an external clock or a combination of a clock and resistor ratio. Up to a 4th-order biquadratic function can be realized with a single LMF100. Higher order filters are implemented by simply cascading additional packages, and all the classical filters (such as Butterworth, Bessel, Elliptic, and Chebyshev) can be realized.

The LMF100 is fabricated on National Semiconductor's high performance analog silicon gate CMOS process, LMCMOS™. This allows for the production of a very low offset, high frequency filter building block. The LMF100 is pin-compatible with the industry standard MF10, but provides greatly improved performance.

Application Notes

Title	Size in Kbytes	Date
AN-779: A Basic Introduction to Filters - Active, Passive and Switched-Capacitor	399 Kbytes	5-Aug-95	Download
AN-779 (Japanese): A Basic Introduction to Filters - Active, Passive and Switched-Capacitor	534 Kbytes

If you have trouble printing or viewing PDF file(s), see Printing Problems.

[Information as of 8-Nov-2009]