MC3458 Datasheet (Motorola) - DUAL DIFFERENTIAL INPUT OPERATIONAL AMPLIFIERS

MC3458, DUAL DIFFERENTIAL INPUT OPERATIONAL AMPLIFIERS

The MC3458/3358 is made using two internally compensated, two *stage operational amplifiers.

The first stage of each consists of differential input devices Q24 and Q22 with input buffer transistors Q25 and Q21 and the differential to single ended converter Q3 and Q4.

The first stage performs

MC3458 Features

* Vref R1 +R2 R1 (VOH

* Vref) +Vref R1 +R2 R1 (VOH

* VOL) R1 +R2 VinH Vref Hysteresis 1/2 R MC3458

* 1/2 R1 a R1 1/2 MC3458 + b R1

* 1/2 MC3458 + 1 R C eo Vin MC3458

* e2 R Vh = eo = C (1 +a +b) (e2

* e1) Figure 11. Bi

* Qua