LTC1099CN#30369

Analog To Digital Converters (ADC) Overview

The LTC1099CN is an 8-bit analog-to-digital converter featuring a built-in sample-and-hold circuit. It operates on a single 5V supply and supports parallel data output with three-state control. The device offers two operational modes: Read (RD) mode for processor interfaces and Write-Read (WR-RD) mode for standalone applications. Key electrical specifications include a typical conversion time of 2.5µs, a maximum power dissipation of 75mW, and a total unadjusted error of -1 LSB. The component is housed in a 20-lead PDIP package and functions within an ambient temperature range of 0°C to 70°C.

Analog To Digital Converters (ADC) Feature Summary

• Built-in Sample-and-Hold with 240ns acquisition time and 2.5V/ms tracking rate
• Two interface modes: RD mode for microprocessors and WR-RD mode for standalone use
• Latched three-state digital outputs with overflow indication for cascading
• User-adjustable conversion time via external resistor on TC pin

Analog To Digital Converters (ADC) Applications

• Microprocessor-compatible data acquisition systems
• Standalone analog-to-digital conversion tasks
• Cascaded configurations for higher resolution requirements
• Analog multiplier circuits when paired with a DAC

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix against official documentation to confirm package type and temperature grade. The CN designation indicates a plastic DIP package with commercial operating limits. Confirm RoHS compliance status through current manufacturer declarations as regulatory statuses may change over time.

Analog To Digital Converters (ADC) Selection Notes

Select this component when an 8-bit resolution with integrated sampling is required for 5V logic systems. Ensure the input signal slew rate does not exceed 2.5V/ms to maintain accuracy without external conditioning. Consider the WR-RD mode if processor timing flexibility is needed, or RD mode for standard ready-strobe interfacing.

Analog To Digital Converters (ADC) Part Context

This part belongs to the LTC1099 family of high-speed ADCs. Variants such as the AC and AI grades offer improved linearity specifications (-0.75 LSB vs -1 LSB). The family utilizes a 2-step flash architecture to reduce comparator count while maintaining speed. Other members include different package options like the SW (SOIC) variant.

Analog To Digital Converters (ADC) Replacement Considerations

Direct replacements must match the 8-bit resolution, parallel interface, and 20-pin PDIP footprint. Verify that substitute devices support the same 5V single-supply operation and provide comparable conversion times. Check for compatible timing characteristics in both RD and WR-RD modes.