
SR series 





(pdf : 590 KB) 
Model 
Characteristics 
Rolloff 
Cutoff (center) frequency range 
Frequency
setting 
Type
1 
Type
2 
Type
3 
SR4BL 
LPF, 4pole Butterworth

24dB/oct

40Hz to 1.6kHz 
400Hz to 20kHz 
5Hz to 100kHz 
4 externally connected
resistors 
SR4FL 
LPF, 4pole Elliptic 
42dB/oct, equivalent 
40Hz to 1.6kHz 
400Hz to 20kHz 
5Hz to 100kHz 
SR4BH 
LPF, 4pole Butterworth 
24dB/oct 
40Hz to 1.6kHz 
400Hz to 5kHz 


SR4FH 
HPF, 4pole Butterworth 
42dB/oct, equivalent 
40Hz to 1.6kHz 
400Hz to 5kHz 


SR2BLH 
LPF, 2pole Butterworth 
12dB/oct 
40Hz to 1.6kHz 
400Hz to 20kHz 
5Hz to 100kHz 
2 externally connected resistors 
SR1BP 
BPF, 1pole pair, Q=5 to 50 
6dB/oct BW 
40Hz to 1.6kHz 
400Hz to 10kHz 


SR2BP 
BPF, 2pole pair, Q=5 
12dB/oct BW 
40Hz to 1.6kHz 
400Hz to 10kHz 


4 externally connected resistors 
SR2BE 
BEF, 2pole pair, Q=5 
Max. attenuation 60dB 
40Hz to 1.6kHz 
400Hz to 10kHz 




RD404D1/2 





(pdf : 280 KB) 
Model 
Description 
Frequency range 
Control type 
RD404D1/2 
Logic frequency setting is available with the combination use of SR filters. 
10Hz to 16kHz 
Digital tunable 


SRA series 



SRA Series : Low power Consumtion 
Model 
Characteristics 
Rolloff 
Cutoff (center) frequency range 
Frequency
setting 
Type
1 
SRA4BL 
LPF, 4pole Butterworth 
24dB/oct 
40Hz to 1.6kHz 
4 externally connected
resistors 
SRA4FL 
LPF, 4pole Elliptic 
42dB/oct, equivalent 
40Hz to 1.6kHz 
SRA4BH 
LPF, 4pole Butterworth 
24dB/oct 
40Hz to 1.6kHz 
SRA4FH 
HPF, 4pole Butterworth 
42dB/oct, equivalent 
40Hz to 1.6kHz 
SRA2BP 
BPF, 2pole pair, Q=5 
12dB/oct BW 
40Hz to 1.6kHz 


SV Series 



SV Series : 5,5V or 3,3V of single supply voltage

Model 
Characteristics 
Rolloff 
Cutoff (center) frequency range 
Supply voltage

Frequency
setting

Type
1

Type
2

SV4BL 
LPF, 4pole Butterworth

24dB/oct

10Hz to 10kHz 
100Hz to 100kHz 
5V or 3.3V, single supply voltage 
4 externally connected resistors 
SV4FL 
LPF,4pole Elliptic 
42dB/oct equivalentt 

