ADS7805U/1K

Analog To Digital Converters (ADC) Overview

The ADS7805U/1K is a 16-bit successive approximation register (SAR) analog-to-digital converter manufactured by Texas Instruments. It features a single-ended input with a standard ±10V range and operates from a single +5V supply. The device supports a minimum sampling rate of 100kHz with a conversion time of approximately 10µs. Key electrical specifications include a maximum integral nonlinearity (INL) of ±3 LSB, a signal-to-noise and distortion ratio (SINAD) of 86dB at a 20kHz input, and a power dissipation under 100mW. It utilizes full parallel data output and includes an internal 2.5V reference or allows for external reference configuration.

Analog To Digital Converters (ADC) Feature Summary

• 16-bit resolution with 100kHz throughput rate
• Standard ±10V single-ended input range
• 86dB minimum SINAD with 20kHz input signal
• ±3 LSB maximum integral linearity error (INL)
• Single +5V supply operation with <100mW power dissipation

Analog To Digital Converters (ADC) Applications

• Industrial process control systems requiring high-resolution analog input
• Data acquisition systems utilizing microprocessor interfaces
• Precision measurement instruments needing low noise performance
• Battery-powered equipment benefiting from single-supply CMOS architecture

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix to confirm package type and quantity. The 'U' designation indicates the SO-28 surface-mount package, while '/1K' specifies a tape and reel quantity of 1000 units. Confirm that the required performance grade matches the datasheet specifications for INL and SINAD, as these parameters vary between standard and high-grade versions within the same package style.

Analog To Digital Converters (ADC) Selection Notes

Select the ADS7805U/1K when a 16-bit SAR ADC with a parallel interface is required for single-supply applications. Ensure the system can accommodate the ±10V input range or adjust signal conditioning accordingly. Consider the pin-compatible ADS7804 if 12-bit resolution is sufficient, as it shares the same footprint and interface requirements but offers lower accuracy specifications.

Analog To Digital Converters (ADC) Part Context

The ADS7805 belongs to the ADS7805 family of 16-bit sampling ADCs from Texas Instruments. It is designed for applications demanding high accuracy and speed in a compact form factor. The device is available in both DIP-28 and SO-28 packages, with the U variant specifically referring to the small-outline integrated circuit package suitable for surface mount technology.

Analog To Digital Converters (ADC) Replacement Considerations

The ADS7804U/1K is a pin-compatible alternative offering 12-bit resolution. Other members of the ADS7805 family, such as ADS7805U, share the same package and interface but may differ in performance grades or packaging quantities.