DATASHEET ICL7650S FN2920 Rev 10.00 2MHz, Super Chopper-Stabilized Operational Amplifier April 12, 2007 The ICL7650S Super Chopper-Stabilized Amplifier offers Features exceptionally low input offset voltage and is extremely stable Guaranteed Max Input Offset Voltage for All Temperature with respect to time and temperature. It is a direct Ranges replacement for the industry-standard ICL7650 offering improved input offset voltage, lower input offset voltage Low Long-Term and Temperature Drifts of Input Offset Voltage temperature coefficient, reduced input bias current, and wider common mode voltage range. All improvements are Guaranteed Max Input Bias Current .10pA highlighted in bold italics in the Electrical Characteristics Extremely Wide Common Mode section. Critical parameters are guaranteed over the Voltage Range . +3.5V to -5V entire commercial temperature range. Reduced Supply Current 2mA Intersils unique CMOS chopper-stabilized amplifier circuitry is user-transparent, virtually eliminating the traditional Guaranteed Minimum Output Source/Sink Current chopper amplifier problems of intermodulation effects, Extremely High Gain 150dB chopping spikes, and overrange lockup. Extremely High CMRR and PSRR 140dB The chopper amplifier achieves its low offset by comparing High Slew Rate .2.5V/ s the inverting and non-inverting input voltages in a nulling amplifier, nulled by alternate clock phases. Two external Wide Bandwidth 2MHz capacitors are required to store the correcting potentials on Unity-Gain Compensated the two amplifier nulling inputs these are the only external components necessary. Clamp Circuit to Avoid Overload Recovery Problems and Allow Comparator Use The clock oscillator and all the other control circuitry is Extremely Low Chopping Spikes at Input and Output entirely self-contained. However the 14 lead version includes a provision for the use of an external clock, if required for a Improved, Direct Replacement for Industry-Standard particular application. In addition, the ICL7650S is internally ICL7650 and other Second-Source Parts compensated for unity-gain operation. Pb-Free Plus Anneal Available (RoHS Compliant) Ordering Information PART PART NUMBER MARKING TEMP. RANGE (C) PACKAGE PKG. DWG. ICL7650SCBA-1 7650S CBA-1 0 to +70 8 Ld SOIC M8.15 ICL7650SCBA-1T 7650S CBA-1 0 to +70 8 Ld SOIC (Tape and Reel) M8.15 ICL7650SCBA-1Z (Note) 7650S CBA-1Z 0 to +70 8 Ld SOIC M8.15 ICL7650SCBA-1ZT (Note) 7650S CBA-1Z 0 to +70 8 Ld SOIC (Tape and Reel) M8.15 ICL7650SCPA-1 7650S CPA-1 0 to +70 8 Ld PDIP E8.3 ICL7650SCPA-1Z (Note) 7650S CPA-1Z 0 to +70 8 Ld PDIP* (Pb-free) E8.3 ICL7650SCPD ICL7650SCPD 0 to +70 14 Ld PDIP E14.3 ICL7650SCPDZ 7650SCPDZ 0 to +70 14 Ld PDIP* (Pb-free) E14.3 *Pb-free PDIPs can be used for through hole wave solder processing only. They are not intended for use in Reflow solder processing applications. NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets molding compounds/die attach materials and 100% matte tin plate termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. FN2920 Rev 10.00 Page 1 of 13 April 12, 2007ICL7650S Pinouts ICL7650S (8 LD PDIP, SOIC) TOP VIEW 1 8 C C EXTA EXTB 2 7 -IN V+ - + 3 6 +IN OUTPUT V- 4 5 C RETN ICL7650S (14 PDIP) TOP VIEW C 1 14 INT/EXT EXTB C 2 13 EXT CLK IN EXTA NC (GUARD) 3 12 INT CLK OUT -IN 4 11 V+ - + +IN 5 10 OUTPUT NC (GUARD) 6 9 OUT CLAMP V- 7 8 C RETN Functional Diagram INT/EXT A A EXT CLK IN OSC. B EXT CLK IN CLK OUT C INTERNAL A = CLK OUT BIAS P +IN + A MAIN OUTPUT B - -IN C N A - C NULL CLAMP A + B CAP RETURN C C EXTA EXTB FN2920 Rev 10.00 Page 2 of 13 April 12, 2007