LTC1609ACSW#PBF

Analog To Digital Converters (ADC) Overview

The LTC1609ACSW#PBF 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 successive approximation 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 AC grade. 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 precision reference with external reference capability

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 'AC' suffix indicates the industrial temperature range (0°C to 70°C) as specified in the ordering information. Confirm package type is 20-lead plastic SO (SW). Check current availability status as older Linear Technology parts may have limited stock or end-of-life status. Ensure RoHS compliance matches project requirements, noting that some legacy listings may vary.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a 16-bit ADC with serial interface and single 5V supply is required. Choose LTC1609ACSW#PBF for commercial/industrial temperature ranges (0°C to 70°C); use LTC1609AISW#PBF for extended temperatures (-40°C to 85°C). Ensure the application can drive the low input impedance (as low as 10kΩ) or add buffering. Verify if straight binary or two's complement output format is needed via the SB/BTC pin configuration.

Analog To Digital Converters (ADC) Part Context

The LTC1609 is part of the LTC160x family of serial ADCs. It serves as an improved second source for the ADS7809 and AD977A. The device integrates a sample-and-hold, precision reference, and SAR converter, simplifying system design by reducing external component count compared to discrete solutions.

Analog To Digital Converters (ADC) Replacement Considerations

Direct pin-compatible replacements include the ADS7809 and AD977A. For upgraded performance, consider the LTC1608 (14-bit) or LTC1607 (12-bit) for lower cost, or the LTC1611/LTC1612 for higher speed (500ksps/1Msps) with similar interfaces.