ADS7804U/1K

Analog To Digital Converters (ADC) Overview

The ADS7804U/1K is a 12-bit successive approximation register (SAR) analog-to-digital converter manufactured by Texas Instruments. It features a parallel interface and supports single-ended inputs with a sampling rate of 100 kS/s. The device operates on a single 5V supply, with both analog and digital power voltages ranging from 4.75 V to 5.25 V. Key performance metrics include a signal-to-noise ratio (SNR) of 70 dB and a SINAD of 72 dB. Differential nonlinearity (DNL) and integral nonlinearity (INL) are specified at +/- 0.9 LSB. It is housed in a 28-pin SOIC package and functions within a temperature range of -40°C to +85°C.

Analog To Digital Converters (ADC) Feature Summary

• Integrates a high-speed 12-bit SAR ADC core with a parallel data interface for direct microcontroller connection.
• Supports external or internal reference voltage configurations to accommodate varying input ranges.
• Delivers low power consumption of 81.5 mW while maintaining linearity specifications of +/- 0.9 LSB.

Analog To Digital Converters (ADC) Applications

• Industrial process control systems requiring precise analog signal digitization.
• Data acquisition modules for monitoring sensor outputs in manufacturing environments.
• Medical instrumentation devices needing accurate voltage measurement capabilities.

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix '1K' indicates reel packaging when ordering. Confirm RoHS compliance status through official datasheets as required by regional regulations. Ensure the SOIC-28 footprint matches the target PCB design constraints before finalizing procurement decisions.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a 12-bit resolution and 100 kS/s throughput are sufficient for the application. Consider the parallel interface requirements against available GPIO pins. Evaluate if the single-ended input architecture meets the signal source characteristics compared to differential alternatives.

Analog To Digital Converters (ADC) Part Context

This part belongs to the ADS7804 series of CMOS sampling ADCs. It shares architectural similarities with other members like the ADS7805 but differs in resolution and pinout configuration. The U/1K designation specifies the industrial temperature grade and tape-and-reel packaging format.

Analog To Digital Converters (ADC) Replacement Considerations

Direct functional substitutes may include the ADS7804IBDWR for different packaging needs. Verify compatibility with existing board layouts when considering alternative packages such as TSSOP or QFN variants within the same family.