LTC1609ACSW#TRPBF

Analog To Digital Converters (ADC) Overview

The LTC1609ACSW#TRPBF is a 16-bit, 200ksps serial sampling analog-to-digital converter (ADC) from Analog Devices. It operates on a single 5V supply with typical power dissipation of 65mW and features an internal precision reference and switched-capacitor SAR architecture. The device 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, integral nonlinearity (INL) of –2 LSB, and differential nonlinearity (DNL) of 1.75 LSB for the A-grade part. It guarantees no missing codes over temperature and offers a high-speed serial interface compatible with DSPs and microprocessors.

Analog To Digital Converters (ADC) Feature Summary

• 16-bit resolution with 200ksps sampling rate and guaranteed no missing codes
• Multiple input ranges: Unipolar (0-10V, 0-5V, 0-4V) and Bipolar (-10V, -5V, -3.3V)
• Single 5V supply operation with 65mW typical power dissipation
• Internal 2.5V reference and sample-and-hold circuit

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 'A' grade suffix indicates specific AC performance limits (e.g., DNL max 1.75 LSB vs 3 LSB for C grade) as defined in the datasheet tables. Confirm the SW package designation corresponds to the 20-lead plastic SO format. Check for end-of-life status or obsolescence notices from Analog Devices prior to procurement.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a 16-bit resolution at 200ksps is required with a single 5V supply. Ensure the application utilizes one of the supported input ranges (unipolar or bipolar) without exceeding the –25V overvoltage protection limit. Consider the external resistor network requirements for offset and gain trimming if absolute accuracy is critical. Verify that the serial interface timing meets the host processor's clock constraints.

Analog To Digital Converters (ADC) Part Context

The LTC1609 is part of the Linear Technology (now Analog Devices) family of serial ADCs. It serves as an improved second source for the ADS7809 and AD977A. The device integrates a successive approximation register, capacitive DAC, and precision reference, simplifying system design by reducing external component count compared to discrete solutions.

Analog To Digital Converters (ADC) Replacement Considerations

Publicly confirmed substitutes include the ADS7809 and AD977A, which are noted as legacy parts for which the LTC1609 is an improved second source. No other direct pin-compatible replacements are explicitly listed in the provided documentation.