LF580 DATA SHEET FEATURES only small capacitors required adjustab

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LF580 DATA SHEET FEATURES only small capacitors required adjustab

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Dual, Continuous, Analog Highpass Filter
LF580 DATA SHEET
FEATURES only small capacitors required adjustable corner frequency dual dB/Oct Butterworth filter dB/Oct cascaded) operating range adjustable single potentiometer
DESCRIPTION LF580 continuous analog filter consists second order dB/oct), tunable (0.2 kHz) highpass Butterworth filter blocks. Tracking corner frequency each block controlled single potentiometer. Cascading blocks together results single 24dB/oct high pass filter requiring only external 0.001 capacitors filter response. output noise each filter stage typically 5.6µV. Cascading filter blocks together will produce noise level which (VN2)2 Where total output noise both filters, noise each filter. improve signal-to-noise ratio filter LF580 should placed after preamplifier, provided that signal level does exceed maximum signal capability 50mVRMS
STANDARD PACKAGING MICROpac PLID Chip 61mils)
0.001
0.001
BOUT
CONTROL
1.8k
AOUT
CONTROL
resistors ohms, capacitors microfarads unless otherwise stated
BLOCK DIAGRAM
Revision Date: January 2001 Document
GENNUM CORPORATION P.O. 489, Stn. Burlington, Ontario, Canada tel. (905) 632-2996 Site: www.gennum.com E-mail: hipinfo@gennum.com
ABSOLUTE MAXIMUM RATINGS
PARAMETER Supply Voltage Operating Temperature Range Storage Temperature Range VALUE/UNITS -10°C -40°C 100°
CONNECTION
VIEW
CONTROL
CAUTION CLASS SENSITIVITY
ELECTRICAL CHARACTERISTICS
Conditions: Frequency kHz, Temperature 25°C, Supply Voltage
Parameter Insertion Loss Current Drain Corner Frequency Distortion Ouput Noise Supply Rejection
Symbol
Conditions VRMS Note
1900
Units
RCNT VRMS =1.25 VRMS Note Note
1300 1650
3.0VDC
Note
parameters switches remain shown Test Circuit unless otherwise stated "Conditions" column Notes Insertion Loss Log(VOUT/VIN)-12 measure output voltage VOUT1 (RCNT =100k) measure output voltage VOUT2 =10.274k) 1000 (VOUT1 VOUT2) Output Noise VOUT /100, filter bandwidth 200Hz 10kHz 12dB/Oct modulated with 1VRMS Supply Rejection (VOUT)-40
0.001
RB=4.7
VB=1.3
1.82k 0.001
LF580
ATTENUATOR 28dB
40.0
VOUT
82.1
100k RL=10k RCNT=100k 1000
resistors ohms, capacitors microfarads unless otherwise stated conditions column
Fig. Test Circuit
0.001 0.001
1.8k
resistors ohms, capacitors microfarads unless otherwise stated
Fig. Functional Schematic
GL504
GL504
RMIC 0.001 0.001 0.001
RPULL
0.033 EP3075
0.22
RCLIP CONTROL
1.8k
LF580
0.001 100k 1.5nF RCNT
RMPO
resistors ohms, capacitors microfarads unless otherwise stated
Fig. GL504-LF580 Application Circuit
RCNT=100K RCNT=10K RCNT=1K
RELATIVE OUTPUT (dB)
100K
FREQUENCY (Hz)
INPUT (mVDC)
Fig. Frequency Response Various RCNT Values
Fig. Total Harmonic Distortion Input Level (measured
CORNER FREQUENCY (Hz)
CURRENT DRAIN (µA)
100K
10000
CONTROL RESISTANCE RCNT
CORNER FREQUENCY (Hz)
Fig. Corner Frequency Control Resistance
Fig. Current Drain Corner Frequency
GENNUM CORPORATION
MAILING ADDRESS: P.O. 489, Stn. Burlington, Ontario, Canada Tel. (905) 632-2996 (905) 632-2814 SHIPPING ADDRESS: Fraser Drive, Burlington, Ontario, Canada
DOCUMENT IDENTIFICATION: DATA SHEET product production. Gennum reserves right make changes time improve reliability, function design, order provide best product possible. REVISION NOTES:
Changes standard packaging information
GENNUM JAPAN CORPORATION
C-101, Miyamae Village, 2-10-42 Miyamae, Suginami-ku, Tokyo 168-0081, Japan Tel. 3334-7700 Fax: 3247-8839
Gennum Corporation assumes responsibility circuits described herein makes representations that they free from patent infringement. Copyright October 1987 Gennum Corporation. rights reserved.
Printed Canada.

LF580 DATA SHEET FEATURES only small capacitors required adjustab

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