Integrated Circuits

LM311 - Voltage Comparator

• Operates from single 5V supply
• Input current: 150 nA max. over temperature
• Offset current: 20 nA max. over temperature
• Differential input voltage range: ±30V
• Power consumption: 135 mW at ±15V

The LM111, LM211 and LM311 are voltage comparators that have input currents nearly a thousand times lower than devices like the LM106 or LM710. They are also designed to operate over a wider range of supply voltages: from standard ±15V op amp supplies down to the single 5V supply used for IC logic.

Related Resources -

• Application Note 260 A 20-Bit A/D Converter pdf
• Low Power Low Offset Quad Comparator LM339
• A/D Converter Interfaces Easily with Many Microprocessors
• Voltage Comparator Information And Circuits
• Comparators and Schmitt Triggers
• Craig’s Thermostat Circuits

ICL8038 Device Information

The ICL8038 waveform generator is a monolithic integrated circuit capable of producing high accuracy sine, square, triangular, sawtooth and pulse waveforms with a minimum of external components. The frequency (or repetition rate) can be selected externally from 0.001Hz to more than 300kHz using either resistors or capacitors, and frequency modulation and sweeping can be accomplished with an external voltage….

• Low Frequency Drift with Temperature 250ppm/^oC
• Low Distortion 1%(SineWave Output)
• High Linearity 0.1%(Triangle Wave Output)
• Wide Frequency Range 0.001Hz to 300kHz
• Variable Duty Cycle 2%to 98%
• High Level Outputs TTL to 28V
• Simultaneous Sine, Square, and Triangle Wave Outputs
• Easy to Use - Just a Handful of External Components Required

Everything You Always Wanted to Know About the ICL8038

• Function Generator using ICL8038
• Electronics — ICL8038-based Oscillator
• DIY Function Generator
• PWM Signal Generators
• Signal Generators Circuits
• Electrical Communications Systems
• DDS Function Generator

(This is another chip of intersil i used for many things - delabs)

ICL7135 Intersil Device Information

The Intersil ICL7135 precision A/D converter, with its multiplexed BCD output and digit drivers, combines dual-slope conversion reliability with ±1 in 20,000 count accuracy and is ideally suited for the visual display DVM/DPM market. The 2.0000V full scale capability, auto-zero, and auto-polarity are combined with true ratiometric operation, almost ideal differential linearity and true differential input. All necessary active devices are contained on a single CMOS lC, with the exception of display drivers, reference, and a clock.

• Accuracy Guaranteed to ±1 Count Over Entire ±20000 Counts (2.0000V Full Scale)
• Guaranteed Zero Reading for 0V Input
• 1pA Typical Input Leakage Current
• True Differential Input
• True Polarity at Zero Count for Precise Null Detection
• Single Reference Voltage Required
• Overrange and Underrange Signals Available for Auto-Range Capability
• All Outputs TTL Compatible
• Blinking Outputs Gives Visual Indication of Overrange
• Six Auxiliary Inputs/Outputs are Available for Interfacing to UARTs, Microprocessors, or Other Circuitry
• Multiplexed BCD Outputs