LTC1609CSW#PBF

Analog To Digital Converters (ADC) Overview

The LTC1609CSW#PBF is a 16-bit, 200ksps serial sampling analog-to-digital converter (ADC) housed in a 20-lead plastic SO package. It operates from a single 5V supply with typical power dissipation of 65mW and 50mW in power-down mode. The device integrates a sample-and-hold circuit, precision reference, switched-capacitor successive approximation A/D, and trimmed internal clock. It supports multiple input ranges: unipolar (0V to 10V, 0V to 5V, 0V to 4V) and bipolar (–10V, –5V, –3.3V). Key electrical specifications include a typical signal-to-noise ratio (SNR) of 87dB, guaranteed no missing codes over temperature, and integral linearity error of –2LSB.

Analog To Digital Converters (ADC) Feature Summary

• 16-bit resolution with 200ksps sampling rate
• Multiple input ranges: Unipolar (0V to 10V/5V/4V) and Bipolar (–10V/–5V/–3.3V)
• Single 5V supply operation with 65mW typical power consumption
• Integrated 2.5V reference and internal clock

Analog To Digital Converters (ADC) Applications

• Industrial process control systems
• Multiplexed data acquisition systems
• High-speed data acquisition for PCs
• Digital signal processing applications

Analog To Digital Converters (ADC) Procurement Notes

Verify the ordering suffix #PBF indicates lead-free packaging compliant with RoHS standards. Confirm the 'C' suffix corresponds to the commercial temperature range of 0°C to 70°C. Ensure the 20-lead SO package footprint matches the PCB layout requirements. Check for availability of compatible external resistors if offset/gain trimming is required for specific input ranges.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a 16-bit resolution at 200ksps is required with a single 5V supply. Choose the LTC1609CSW#PBF for commercial temperature applications (0°C to 70°C). Use the internal reference for cost-sensitive designs or an external reference if higher accuracy is needed. Consider the 20-lead SO package for space-constrained boards compared to the 28-lead SSOP option.

Analog To Digital Converters (ADC) Part Context

The LTC1609 is part of Analog Devices' serial ADC family, offering improved performance over earlier models like the ADS7809 and AD977A. It is designed for applications requiring high accuracy and ease of interface with microprocessors and DSPs via its serial I/O. The device features a high-speed serial interface allowing data output using either an internal or external shift clock.

Analog To Digital Converters (ADC) Replacement Considerations

Publicly confirmed substitutes include the ADS7809 and AD977A, which are noted as previous generation equivalents. Verify pin compatibility and electrical specifications before substitution.