ADS7809U/1KG4

Analog To Digital Converters (ADC) Overview

The ADS7809U/1KG4 is a 16-bit successive approximation register (SAR) analog-to-digital converter manufactured by Texas Instruments. It features a serial CMOS sampling architecture with a maximum sampling rate of 100 kSPS and a conversion time of 10 µs. The device operates on a single 5 V supply, with both analog and digital power rails ranging from 4.75 V to 5.25 V. It utilizes a single-ended input configuration and supports both external and internal reference modes. Key performance metrics include a signal-to-noise ratio (SNR) of 88 dB, integral nonlinearity (INL) of ±2 LSB, and typical power consumption of 81.5 mW. The component is housed in a 20-pin SOIC package and functions within an operating temperature range of -40°C to +85°C.

Analog To Digital Converters (ADC) Feature Summary

• High-resolution 16-bit data acquisition capability using SAR architecture
• Integrated sample-and-hold amplifier for accurate signal capture
• Flexible reference configuration supporting both internal and external sources
• Serial interface compatibility with standard DSP and microprocessor systems

Analog To Digital Converters (ADC) Applications

• Industrial process control systems requiring high-precision analog input
• Data acquisition modules for sensor interfacing
• Medical instrumentation equipment demanding low noise performance
• Vibration monitoring and acoustic analysis systems

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'G4' against the official Texas Instruments datasheet to confirm RoHS compliance and lead-free status. Confirm that the '/1K' designation indicates tape and reel packaging if bulk handling is required. Ensure the source document explicitly lists this exact part number, as suffix variations may affect availability or specifications. Cross-reference with the manufacturer's current product lifecycle status to determine obsolescence risks.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a 16-bit resolution and 100 kSPS speed are required for single-channel applications. Compare SNR and INL specifications against alternative SAR ADCs if system noise budgets are tight. Verify that the 5 V supply voltage aligns with the target system's power distribution network. Consider the SOIC-20 package dimensions for PCB layout constraints and thermal management requirements during the design phase.

Analog To Digital Converters (ADC) Part Context

The ADS7809U/1KG4 belongs to the ADS7809 family of high-speed, low-power analog-to-digital converters. This series is designed for applications requiring precise data conversion with minimal power consumption. The device integrates a fast-tracking sample-and-hold amplifier and a 16-bit ADC core. It is commonly used in environments where reliable serial communication and high accuracy are critical for system performance.

Analog To Digital Converters (ADC) Replacement Considerations

Publicly confirmed substitute part numbers include the ADS7809U and ADS7809UB/1K. These variants share identical electrical specifications and pinouts but may differ in packaging format or regional availability. Verify functional equivalence before substitution.