MODE 3a HP BP LP and Notch with External Op Amp

(See

Figure 11 )

e

100

c

Q

e

R2

R1

R3

R1

R4

R1

e

100

I

or

50

I

I

J

c

eb

c

MODE 4 Allpass Bandpass Lowpass Outputs

(See

Figure 12 )

e

center frequency

e

100

or

50

Q

e

BW

e

R3

R2

R3

R1

eb

eb

R3

R2

response (which theoretically should be a straight line) If this is unaccept-

able Mode 5 is recommended

TLH10399 – 20

FIGURE 11 MODE 3a

TLH10399 – 21

FIGURE 12 MODE 4

11