Resistor Tunable Filter

SR/SRA/SV series

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

5kHz to 100kHz

4 externally connected resistors

SR-4FL

LPF, 4-pole Elliptic

42dB/oct, equivalent

40Hz to 1.6kHz

400Hz to 20kHz

5kHz to 100kHz

SR-4BH

LPF, 4-pole Butterworth

24dB/oct

40Hz to 1.6kHz

400Hz to 5kHz

-

SR-4FH

HPF, 4-pole Butterworth

42dB/oct, equivalent

40Hz to 1.6kHz

400Hz to 5kHz

-

SR-2BLH

LPF, 2-pole Butterworth

12dB/oct

40Hz to 1.6kHz

400Hz to 20kHz

5kHz 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

SR-2BE

BEF, 2-pole pair, Q=5

Max. attenua-tion 60dB

40Hz to 1.6kHz

400Hz to 10kHz

-

Model

Description

Frequency range

Control type

RD-404D1/2

Logic frequency setting is available with the combination use of SR filters.

10Hz to 16kHz

Digital tunable

Model

Characteristics

Rolloff

Cut-off (center) frequency range

Frequency
setting

Type 1

SRA-4BL

LPF, 4-pole Butterworth

24dB/oct

40Hz to 1.6kHz

4 externally connected resistors

SRA-4FL

LPF, 4-pole Elliptic

42dB/oct, equivalent

40Hz to 1.6kHz

SRA-4BH

LPF, 4-pole Butterworth

24dB/oct

40Hz to 1.6kHz

SRA-4FH

HPF, 4-pole Butterworth

42dB/oct, equivalent

40Hz to 1.6kHz

SRA-2BP

BPF, 2-pole pair, Q=5

12dB/oct BW

40Hz to 1.6kHz

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