ADS7805U/1KG4

Analog To Digital Converters (ADC) Overview

The ADS7805U/1KG4 is a 16-bit successive approximation register (SAR) analog-to-digital converter manufactured by Texas Instruments. It operates on a single +5V supply and features a standard ±10V input range with a throughput rate of 100 kHz. The device integrates a sample-and-hold circuit, internal reference, and full parallel data output with 3-state drivers. Key electrical specifications include a maximum integral nonlinearity error of ±3 LSB, a signal-to-noise and distortion ratio (SINAD) of 86 dB at a 20 kHz input frequency, and a maximum power dissipation of 100 mW. It is housed in an SO-28 package and specified for operation over the industrial temperature range of –25°C to +85°C.

Analog To Digital Converters (ADC) Feature Summary

• 16-bit resolution with 100 kHz sampling rate and ±10V input range
• Single +5V supply operation with power dissipation under 100 mW
• Internal or external reference options with 86 dB minimum SINAD
• Full parallel data output with 3-state drivers and BYTE pin for byte-wise reading

Analog To Digital Converters (ADC) Applications

• Industrial process control systems requiring high-resolution analog input
• Data acquisition systems utilizing microprocessor interfaces
• Precision measurement equipment needing low power consumption

Analog To Digital Converters (ADC) Procurement Notes

Verify the ordering suffix 'G4' indicates lead-free composition and RoHS compliance as per Texas Instruments standards. Confirm the '/1K' designation corresponds to tape and reel packaging containing 1000 units. Ensure the component matches the SOIC-28 package outline DW. Cross-reference the specific revision level against the latest datasheet SBAS020A to confirm parameter consistency.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a 16-bit SAR ADC with a parallel interface is required. It serves as a pin-compatible upgrade to the 12-bit ADS7804. Consider the internal reference drift of 8 ppm/°C if high stability is needed without external buffering. The device supports both hardware and software calibration to compensate for offset and gain errors.

Analog To Digital Converters (ADC) Part Context

The ADS7805 belongs to the ADS7805 family of 16-bit CMOS A/D converters. It shares architectural similarities with the ADS7804 but offers higher resolution. The U variant denotes the plastic small-outline package. The G4 suffix typically signifies environmental enhancements such as lead-free terminals. This part is designed for applications demanding accuracy and speed within a low-power constraint.

Analog To Digital Converters (ADC) Replacement Considerations

The ADS7804 is a pin-compatible 12-bit alternative within the same family. For higher performance requirements, consider the ADS8354 or ADS8505 series which offer different interface types and speeds. Verify that any replacement maintains the SOIC-28 footprint and voltage compatibility.