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Número de pieza | ZXF36L01 | |
Descripción | VARIABLE Q FILTER | |
Fabricantes | Zetex Semiconductors | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de ZXF36L01 (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
No Preview Available ! ZXF36L01
VARIABLE Q FILTER
DESCRIPTION
APPLICATIONS
The ZXF36L01 is a versatile analog high Q bandpass Many filter applications including: -
filter. The device contains two sections:
• Audio bandpass and notch
1 Variable Q bandpass filter.
2 Mixer block.
• Micro controlled frequency
• Adaptive filtering
The basic filter section requires 2 resistors and 2 • Sonar and Ultrasonic Systems
capacitors to set the centre frequency. The filter • Instrumentation
operates up to a frequency of 150kHz. Two external
resistors control filter Q Factor. The Q can be varied up
to 50.
FEATURES AND BENEFITS
The mixer is included to extend the frequency range up • Centre Frequency up to 700kHz
to 700kHz and to permit the centre frequency to be • Tuneable centre frequency
tuned. The local oscillator can be any waveform, • Variable Q
making microprocessor control convenient.
• Low power
• Standby mode for improved battery life
ORDERING INFORMATION
PART NUMBER
PACKAGE
ZXF36L01W24
SO24W
PART
MARK
ZXF36L01
PART NUMBER
CONTAINER INCREMENT
SYSTEM DIAGRAM
ZXF36L01W24TC
ZXF36L01W24
Reel 13”
330mm
Tube
1000
31
ISSUE 3 - JANUARY 2002
1
1 page FILTER CONFIGURATIONS AND RESPONSES
Notch Filter
ZXF36L01
R=10kΩ
C=100nF
Rf=19.5kΩ
Ri=10kΩ
1
C
R
R
C
Ri
Rf
VSS
FI1
C1
RC1
R2
BI
MXO
RC2
GP1
GP2
GP3
VSS
5V
VDD
FI2
FO
MXI
LO
BI
BG
N/C
N/C
N/C
PD
VDD
24 100nF
Input Signal
Output Signal
100nF
5V
100nF
Filter AC Performance
Notch Filter Gain Response
5
0
-5
-10
-15
-20
-25
-30
-35
10
100 1000
Frequency (Hz)
Notch Filter Phase Response
270
240
210
180
150
120
90
10
100 1000
Frequency (Hz)
10000
10000
1
fo = 2πRC
Q ∝ (Rf / Ri)
Where R, Ri and Rf ≥10kΩ and C ≥ 50 pF
See “Designing for a Value of Q” for more
details.
Typical responses for the circuit with
component values shown in circuit diagram.
ISSUE 3 - JANUARY 2002
5
5 Page ZXF36L01
Evaluation
An evaluation board (ZXF36L01-EVB) is available to assist with in-system
or stand-alone performance evaluation. The board can be set, by simple
jumper links, to perform any of the filter characteristic responses. The
mixer can be selected in conjunction with the notch pass filter 2 functions.
Evaluation boards can be purchased from our catalogue distributors.
Digi-Key North America (www.digikey.com)
Tel:1-800344-4539
Europe - Farnell (www.farnell.com)
Tel:44-113-263-6311
ISSUE 3 - JANUARY 2002
11
11 Page |
Páginas | Total 12 Páginas | |
PDF Descargar | [ Datasheet ZXF36L01.PDF ] |
Número de pieza | Descripción | Fabricantes |
ZXF36L01 | VARIABLE Q FILTER | Zetex Semiconductors |
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