ILC7107 Datasheet, Intersil

autozero to less than 10µV, zero drift of less than 1µV/oC, input bias current of 10pA (Max), and rollover error of less than one count. True differential inputs and refe.

and Test Circuits + R1 R3 OSC 1 40 OSC 2 39 OSC 3 38 C4 TEST 37 R4 C1 R5 C5 C2 R2 C3 DISPLAY REF HI 36 REF LO 35 CREF.