The ICL7650SCPA-1Z is a Super Chopper-stabilized Amplifier offers exceptionally low input offset voltage and is extremely stable with respect to time and temperature. It is a direct replacement for the industry-standard ICL7650 offering improved input offset voltage, lower input offset voltage temperature coefficient, reduced input bias current and wider common mode voltage range. All improvements are highlighted in bold italics in the electrical characteristics section. Critical parameters are guaranteed over the entire commercial temperature range. Intersil"s unique CMOS chopper-stabilized amplifier circuitry is user-transparent, virtually eliminating the traditional chopper amplifier problems of intermodulation effects, chopping spikes and over range lockup. The chopper amplifier achieves its low offset by comparing the inverting and non-inverting input voltages in a nulling amplifier, nulled by alternate clock phases.
The TC913BCPA is a dual auto-zeroed Operational Amplifier for use with strain gage amplifier. The TC913 sets a new standard for low-power, precision dual-operational amplifiers. Chopper-stabilized or auto-zeroed amplifiers offer low offset voltage errors by periodically sampling offset error and storing correction voltages on capacitors. Previous single amplifier designs required two user-supplied, external 0.1µF error storage correction capacitors - much too large for on-chip integration. The unique TC913 architecture requires smaller capacitors, making on-chip integration possible. Microvolt offset levels are achieved and external capacitors are not required. The TC913 system benefits are apparent when contrasted with a TC7650 chopper amplifier circuit implementation. A single TC913 replaces two TC7650"s and four capacitors. Five components and assembly steps are eliminated.
The ICL7650S Super Chopper-Stabilized Amplifier offers exceptionally low input offset voltage and is extremely stable with respect to time and temperature. It is a direct replacement for the industry-standard ICL7650 offering improved input offset voltage, lower input offset voltage temperature coefficient, reduced input bias current, and wider common mode voltage range. All improvements are highlighted in bold italics in the Electrical Characteristics section. Critical parameters are guaranteed over the entire commercial temperature range. Features • Guaranteed Max Input Offset Voltage for All Temperature Ranges • Low Long-Term and Temperature Drifts of Input Offset Voltage • Guaranteed Max Input Bias Current. . . . . . . . . . . . . .10pA • Extremely Wide Common Mode Voltage Range. . . . . . . . . . . . . . . . . . . . . . . +3.5V to -5V • Reduced Supply Current . . . . . . . . . . . . . . . . . . . . . . 2mA • Guaranteed Minimum Output Source/Sink Current • Extremely High Gain . . . . . . . . . . . . . . . . . . . . . . . .150dB • Extremely High CMRR and PSRR . . . . . . . . . . . . . .140dB • High Slew Rate. . . . . . . . . . . . . . . . . . . . . . . . . . . .2.5V/µs • Wide Bandwidth . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2MHz • Unity-Gain Compensated • Clamp Circuit to Avoid Overload Recovery Problems and Allow Comparator Use • Extremely Low Chopping Spikes at Input and Output • Improved, Direct Replacement for Industry-Standard ICL7650 and other Second-Source Parts