zxf103 Zetex Semiconductors plc., zxf103 Datasheet
zxf103
Related parts for zxf103
zxf103 Summary of contents
Page 1
... VARIABLE Q FILTER DESCRIPTION The ZXF103 is a versatile analog high Q bandpass filter. It can be configured to provide pass or notch characteristics. The basic filter section requires 2 resistors and 2 capacitors to set the centre frequency. The frequency range 600kHz. Two external resistors control filter Q Factor. The Q can be varied up to 50. ...
Page 2
... ZXF103 ABSOLUTE MAXIMUM RATINGS Voltage on any pin Operating temperature range Storage temperature ELECTRICAL CHARACTERISTICS Test Co ditions: Temperature =25° =10k,C =10pF L L GENERAL CHARACTERISTICS Parameter Operating current Max. operating frequency Q usable range Centre Frequency temperature coefficient Q temperature coefficient Voltage noise Input impedance ...
Page 3
... AC Filter Performance 0 -8 -16 -24 -32 -40 10K 100K Frequency (Hz) 270 225 180 135 90 45 10K 100K Frequency (Hz) ISSUE 1 - APRIL 2002 Fo where R=R1=R2 and Q where R1,R2,R3 and R4 and C1 and C2 1M 10M See “Designing for a value of Q” for more details. 1M 10M 3 ZXF103 C=C1= 50pF ...
Page 4
... ZXF103 Filter Configurations and Responses (Continued) Inverse Notch Filter (with 0dB Stop Band) AC Filter Performance 10K 100K Frequency (Hz) -45 -90 -135 -180 -225 -270 10K 100K Frequency (Hz) 1M 10M 1M 10M where R=R1=R2 and C=C1= where R1,R2,R3 and R4 2k and C1 and C2 ...
Page 5
... C1 and C2 1M 10M See “Designing for a value of Q” for more details. The skirt ‘roll off’ away from the peak is -20dB/Decade regardless of chosed Q. Typical responses from the circuit with component values derived from the diagram. 1M 10M 5 ZXF103 C=C1= 50pF ...
Page 6
... ZXF103 Designing for a value mentioned on the configuration pages, there is a proportional relationship between the ratio of R4 and R3, and These resistors define the gain of an inverting amplifier that determines the peak value of gain and therefore the Q of the filter described as; ...
Page 7
... J2 and J3 (0dB Stop Band) Notch Pass 2 J3 only (Attenuating skirts) ISSUE 1 - APRIL 2002 C4 100 GP1 0 v Vcc RC2 GP3 Bias GP2 RC1 N Vcc ZXF103 ZXF103 VR1 Output 100 nF C6 Input 100 nF ...
Page 8
... ZXF103 ISSUE 1 - APRIL 2002 8 ...
Page 9
... Zetex Inc Suite 315 700 Veterans Memorial Highway Hauppauge NY11788 USA Telephone: (631) 360 2222 Fax: (631) 360 8222 9 ZXF103 Zetex (Asia) Ltd 3701-04 Metroplaza, Tower 1 Hing Fong Road Kwai Fong, Hong Kong China Telephone: (852) 26100 611 Fax: (852) 24250 494 ...