AN1084

The AN1084 is a kind of quadruple operational amplifier with input stages consisting of P-ch J-FET adopting the ion implantation process.They can be applied widely to general control equipments and medical equipments such as intergrators,sample and hold circuits and high input impedance buffers.There are some features as follows.First is high slew rate: SR=11 V/S typ.The second is low input bias current: I_bias=30 pA typ.Then is low offset current: I_IO=50 pA typ.Next is high impedance: 10¹².The fifth is high voltage gain: G_V=106 dB typ.The sixth is wide range of supply voltage:±5 V to ±18 V.The seventh is built-in phase compensation circuit.

What comes next is about the AN1084 absolute maximum ratings.The V_CC (supply voltage) is ±18 V.The V_ID (differential input voltage) is ±30 V.The V_ICM (common code voltage) is ±15 V.The P_D (power dissipation) is 570 mW.The T_opr (operating ambient temperature) is from -20 to +75.The T_stg (storage temperature) is from -55 to +150.

The following is about the electrical characteristics of AN1084(V_CC=15 V,V_EE=-15 V,Ta=15).The typical V_I(offset) (input offset voltage) is 2 mV and the maximum is 10 mV at R_S50.The typical I_IO (input offset current) is 5 pA and the maximum is 200 pA.The typical I_bias (input bias current) is 30 pA and the maximum is 400 pA.The minimum G_V (voltage gain) is 88 dB and the typical is 106 dB at R_L=2 k,V_O=±10 V.The minimum V_O(max) (maximum output voltage) is ±12 V and the typical is ±14 V at R_L10 k.The minimum V_O(max) (maximum output voltage) is ±10 V and the typical is ±12.5 V at R_L2 k.