NF Filter
Function Modules and Component : Filter Amplifier Oscillator Phase Dectector
   
Resistor Tunable Filter  
SR series For general purpose, single in-line package
SRA series Low power consumption, single in-line package

SR-2BLH

SRA-4BL
Model Characteristics Rolloff Cut-off (center) frequency range Frequency
setting
Type 1 Type 2 Type 3
SR-4BL LPF, 4-pole Butterworth 24dB/oct 40Hz to 1.6kHz 400Hz to 20kHz 5Hz to 100kHz 4 externally connected resistors
SRA-4BL - -
SR-4FL LPF, 4-pole Elliptic 42dB/oct, equivalent 40Hz to 1.6kHz 400Hz to 20kHz 5Hz to 100kHz
SRA-4FL
-
-
SR-4BH LPF, 4-pole Butterworth 24dB/oct 40Hz to 1.6kHz 400Hz to 5kHz
-
SRA-4BH
-
-
SR-4FH HPF, 4-pole Butterworth 42dB/oct, equivalent 40Hz to 1.6kHz 400Hz to 5kHz
-
SRA-4FH
-
-
SR-2BLH LPF, 2-pole Butterworth 12dB/oct 40Hz to 1.6kHz 400Hz to 20kHz 5Hz to 100kHz 2 externally connected resistors
SR-1BP BPF, 1-pole pair, Q=5 to 50 6dB/oct BW 40Hz to 1.6kHz 400Hz to 10kHz
-
SR-2BP BPF, 2-pole pair, Q=5 12dB/oct BW 40Hz to 1.6kHz 400Hz to 10kHz
-
 4 externally connected resistors
SRA-2BP
-
-
SR-2BE BEF, 2-pole pair, Q=5 Max. attenua-tion 60dB 40Hz to 1.6kHz 400Hz to 10kHz
-
Supply voltage : ¡Ó15V
Dimensions : 51.5 x 14 (mm), 20 pins, Single-in-line package (SIP)
* Can be installed in Multichannel SR Filter 3315
   
SV series 5V or 3.3V of single supply voltage, single in-line package

SV-4BL

SV-4FL
Model Characteristics Rolloff Cut-off (center) frequency range
Supply voltage
Frequency
setting
Type 1
Type 2
SV-4BL LPF, 4-pole Butterworth 24dB/oct 10Hz to 10kHz 100Hz to 100kHz 5V or 3.3V, single supply voltage 4 externally connected resistors
SV-4FL LPF,4-pole Elliptic 42dB/oct equivalentt
   
RT series
 Steep attenuation characteristics, dual in-line package

 
Model Characteristics Rolloff Min. attenuation Cut-off (center) frequency range
Frequency
setting
Type 1
Type 2
RT-8FLA LPF, 8-pole Elliptic 135dB/oct, equivalent 85dB typ. 10Hz to 2kHz 100Hz to 20kHz 8 externally connected resistors
RT-8FLB LPF, 8-pole Elliptic 100dB/oct, equivalent 106dB typ.
RT-3BP BEF, 3-pole pair, Q=4.32 1/3oct BW - 6 externally connected resistors
Supply voltage : ¡Ó15V
Dimensions : 54.5 x 33.7 x 6.5 (mm), 40 pins, Dual-in-line package (DIP)
* Can be installed in Multichannel RT Filter 3316
   
HR series High reliability, dual in-line package, hermetic seal
 
Model Characteristics Rolloff Cut-off (center) frequency range
Frequency
setting
Type 1
Type 2
HR-4BL LPF, 4-pole Butterworth 24dB/oct 10Hz to 1.6kHz 100Hz to 100kHz 4 externally connected resistors
HR-4FL LPF, 4-pole Ellipti 42dB/oct, equivalent
HR-4BH HPF, 4-pole Butterworth 24dB/oct 100Hz to 50kHz
HR-4FH HPF, 4-pole Elliptic 42dB/oct, equivalent
HR-2BP BPF, 2-pole pair Butterworth 12dB/oct BW
Operating temperature : -40¢XC to 85¢XC or -55¢XC to 125¢XC
Supply voltage : ¡Ó15V
Dimensions : 20 x 33 x 7 (mm), 24 pins, Dual-in-line package (DIP), hermetic seal
* The screening based on MIL-STD-883 and the special reliable test can be done by request.
* Can be installed in Multichannel HR Filter 3314
   
Voltage Tunable Filter  

VT-4BLHA

 The VT series features frequency control by means of an external applied voltage.
Model Characteristics Rolloff Cut-off (center) frequency range
Frequency
setting
VT-4BLA LPF, 24dB/oct 24dB/oct 100Hz to 100kHz 4 externally connected resistors
VT-4BHA HPF, 24dB/octt 24dB/oct 20Hz to 20kHz -
VT-2BPA BPF, 2-pole pair Q=5 12dB/oct BW 200Hz to 20kHz 6 externally connected resistors
Supply voltage : ¡Ó15V
Dimensions : 54.5 x 33.7 x 6.5 (mm), 40 pins, Dual-in-line package (DIP)
* Can be installed in Multichannel VT Filter 3334
   
Fixed Frequency Filter  

CF-8BL

 The CF series is semi-custom made filter.
A cutoff (center) frequency and detail specifications are specified by customers. Various type filters for a semi-custom made are prepared.

Lowpass Filter

Model CF-3BL
CF-3LL		 CF-4BL
CF-4LL		 CF-5BL
CF-5LL
CF-6BL
CF-6LL
 CF-7BL
CF-7LL		 CF-8BL
CF-8LL
Rolloff 18dB/oct 24dB/oct 30dB/oct 36dB/oct 42dB/oct 48dB/oct
Characteristics B : Butterworth, L : Bessel
Cut-off frequency 1Hz to 1MHz
Model CF-6FL CF-7FL CF-8FL
Rolloff 60dB/oct to 300dB/oct
Characteristics Elliptic
Cut-off frequency 10Hz to 1MHz

Highpass Filter

Model CF-3BH CF-4BH CF-5BH
CF-6BH
 CF-7BH CF-8BH
Rolloff 18dB/oct 24dB/oct 30dB/oct 36dB/oct 42dB/oct 48dB/oct
Characteristics Butterworth
Cut-off frequency 1Hz to 50kHz
Model CF-6FH CF-7FH CF-8FH
Rolloff 60dB/oct to 300dB/oct
Characteristics Elliptic
Cut-off frequency 1Hz to 50kHz

Bandpass Filter

Model CF-2BP CF-3BP CF-4BP
CF-5BP
 CF-6BP
No. off pole 4 (2-pole pair) 6 (3-pole pair) 8 (4-pole pair) 10 (5-pole pair) 12 (6-pole pair)
Rolloff 12dB/oct BW 18dB/oct BW 24dB/oct BW 30dB/oct BW 36dB/oct BW
Center frequency 1Hz to 1MHz 1Hz to 100kHz
Q 1 to 10

Band-eliminaion Filter

Model CF-1BE CF-2BE CF-3BE
CF-4BE
No. off pole 2 (1-pole pair) 4 (2-pole pair) 6 (3-pole pair) 8 (4-pole pair)
Center frequency 1Hz to 50kHz
Q 5
* Supply voltage : ¡Ó15V (¡Ó5V to ¡Ó18V)
   
Filter for specified application

SD-1BE

CF-4FPA and SF-8FLC-1
Model Descriptions
SD-1BE Ham rejection BEF of 50 or 60Hz
CF-4FPA BPF 200B/s for modem
SF-8FLC-1 LPF for ISDN terminal, compliant with CCITT

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