MC34071,2,4,A MC33071,2,4,A, NCV33072,4,AGENERAL ADDITIONAL APPLICATIONS INFORMATION VS = ± 15.0 V C2 C2 R1 0.02 0.05 C1 46.1 k 1.0 R2 - R1 R3 5.6 k C1 MC34071 560 510 - 1.0 R2 + fo = 100 Hz 1.1 k Ho = 20 MC34071 C1 f 0.44 + o = 1.0 kHz Ho = 10 Ho+0.5 Choose: fo, Ho, C1 Then: R1 = Choose: f pf 2 Ǹ o, Ho, C2 oC1 2 Ǹ Then: C1 = 2C2 (Ho+1) R2 = 2pfoC1 (1/Ho+2) 2 Ǹ R2 R2 C R2 = R3 = R1 = C2 = 4pf H H oC2 o+1 o Ho Figure 56. Second Order Low−Pass Active FilterFigure 57. Second Order High−Pass Active Filter CF* VO = 10 V Step RF 2.0 k + - MC34071 VO MC34071 V R1 O - R + L I V R2 t in Uncompensated s = 1.0 ms to 1/2 LSB (8-Bits) t High Speed s = 2.2 ms V Compensated O R2 R1 DAC to 1/2 LSB (12-Bits) = BW (-3.0 dB) = GBW Vin R1 R1 +R2 *Optional Compensation SR = 13 V/ms SR = 13 V/ms Figure 58. Fast Settling InverterFigure 59. Basic Inverting Amplifier + MC34071 VO - Vin R2 V + in R MC34071 V L O - R1 VO R2 = 1 + Vin R1 BWp = 200 kHz R1 BW (-3.0 dB) = GBW VO = 20 Vpp R1 +R2 SR = 10 V/ms Figure 60. Basic Noninverting AmplifierFigure 61. Unity Gain Buffer (AV = +1.0)http://onsemi.com16