LTC1409ISW#TRPBF

Analog To Digital Converters (ADC) Overview

The LTC1409ISW#TRPBF is a 12-bit, 800ksps successive approximation register (SAR) analog-to-digital converter manufactured by Analog Devices. It operates from ±5V supplies with a power dissipation of 80mW and features a true differential input sample-and-hold circuit with a 20MHz full-power bandwidth. The device includes an internal precision reference and offers two digitally selectable shutdown modes: Nap (4mW) and Sleep (10μW). It provides a μP-compatible 12-bit parallel output interface without pipeline delay, housed in a 28-lead SO Wide package.

Analog To Digital Converters (ADC) Feature Summary

• 12-bit resolution with 800ksps sampling rate
• Differential inputs with 60dB common mode rejection
• Nap (4mW) and Sleep (10μW) shutdown modes
• No pipeline delay with parallel digital output
• Internal 2.5V reference with ±1LSB INL/DNL

Analog To Digital Converters (ADC) Applications

• Telecommunications
• Digital Signal Processing
• Multiplexed Data Acquisition Systems
• Spectrum Analysis
• Imaging Systems

Analog To Digital Converters (ADC) Procurement Notes

Verify the ISW suffix indicates the industrial temperature range (-40°C to +85°C) and SW package style. Confirm the #TRPBF suffix denotes tape and reel packaging and lead-free compliance. Cross-reference the manufacturer part number with official Analog Devices documentation to ensure authenticity and correct revision level.

Analog To Digital Converters (ADC) Selection Notes

Select this component for applications requiring high-speed 12-bit conversion with low power consumption. Ensure the system supports ±5V dual supplies. Verify that the microprocessor interface can handle the 12-bit parallel data bus and control signals (CS, CONVST, RD). Consider the 150ns acquisition time when designing the driving circuit for high source impedances.

Analog To Digital Converters (ADC) Part Context

The LTC1409 belongs to the Linear Technology ADC family, designed for high-performance data acquisition. It is functionally similar to the LTC1419 but offers lower 12-bit resolution compared to the 14-bit variant. The ISW#TRPBF designation specifies the industrial grade, SOIC wide package, and reel packaging format within the broader LTC1409 product line.

Analog To Digital Converters (ADC) Replacement Considerations

The LTC1419 serves as a higher-resolution alternative with 14-bit accuracy and identical pinout. For single-supply operations, consider the AD7674ASTZ which supports 3-wire or SPI interfaces. Direct pin-for-pin replacements require matching the 800ksps rate and parallel interface requirements.