LTC1091ACN8#PBF

ADCs/DACs - Special Purpose Overview

The LTC1091ACN8#PBF is a 10-bit serial I/O data acquisition system in an 8-lead PDIP package. It integrates a switched-capacitor successive approximation A/D core, software-configurable analog multiplexer, and on-chip sample-and-holds. The device supports unipolar conversions with single supply voltages of 5V or 10V, or bipolar operation with -5V supplies. It features a direct 3- or 4-wire interface to microprocessors, low supply current (3.5mA max), and high impedance analog inputs common mode to supply rails. The A-grade specification ensures total unadjusted error of –1LSB over temperature.

ADCs/DACs - Special Purpose Feature Summary

• 10-Bit SAR ADC with integrated sample-and-hold and configurable analog multiplexer
• Serial interface compatible with 3-wire or 4-wire MPU ports
• A-grade accuracy: Total Unadjusted Error of –1LSB maximum over temperature
• Low power consumption: 3.5mA maximum supply current at 5V

ADCs/DACs - Special Purpose Applications

• Remote data acquisition systems requiring low power
• Industrial process control monitoring
• Battery-powered instrumentation
• Microprocessor-based measurement systems

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific ordering suffix #PBF indicates lead-free compliance and RoHS status as per Analog Devices standards. Confirm the ACN8 variant corresponds to the commercial temperature range (-40°C to 85°C) and 8-lead PDIP package. Cross-reference the manufacturer part number with official Analog Devices documentation to ensure authenticity and correct pinout configuration for integration.

ADCs/DACs - Special Purpose Selection Notes

Select the LTC1091ACN8#PBF for applications requiring two differential or four single-ended analog inputs with 10-bit resolution. Choose this component over higher channel counts if only two input channels are needed. Ensure the system voltage matches the 5V or 10V single-supply requirement. Verify that the serial interface timing aligns with the microprocessor's clock capabilities, noting the maximum clock frequency specifications.

ADCs/DACs - Special Purpose Part Context

This component belongs to the LTC1091/LTC1092/LTC1093/LTC1094 family of 10-bit data acquisition systems. The LTC1091 specifically provides two analog input channels, distinguishing it from the single-channel LTC1092 and multi-channel LTC1093/1094 variants. All members share similar architectural features including the SAR core and serial interface but differ in channel count and package options.

ADCs/DACs - Special Purpose Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.