ADS7805UB

Analog To Digital Converters (ADC) Overview

The ADS7805UB 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 cycle time of 10µs. Key performance metrics include a minimum Signal-to-Noise and Distortion Ratio (SINAD) of 86dB at a 20kHz input frequency and a maximum Integral Nonlinearity (INL) error of ±3 LSB. It utilizes full parallel data output with 3-state drivers and includes an internal 2.5V reference or provisions for external references.

Analog To Digital Converters (ADC) Feature Summary

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

Analog To Digital Converters (ADC) Applications

• Industrial process control systems
• Data acquisition systems requiring high accuracy
• Precision measurement instrumentation
• Vibration monitoring applications

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix to confirm package type and quantity. The 'UB' designation indicates a SOIC-28 package, while '/1K' specifies tape and reel packaging containing 1000 units. Standard tube packaging contains 28 units per tube. Ensure compatibility with existing PCB footprints for the SOIC-28 form factor.

Analog To Digital Converters (ADC) Selection Notes

Select the ADS7805UB when a 16-bit resolution and ±10V input range are required. Compare against the ADS7804 if pin compatibility with a 12-bit device is necessary, as they are pin-compatible. Consider the ADS7809 if a serial interface is preferred over the parallel interface provided by this model. Verify that the system can accommodate the 28-pin SOIC footprint.

Analog To Digital Converters (ADC) Part Context

The ADS7805 belongs to the ADS7805 family of 16-bit CMOS ADCs. It is designed as a drop-in replacement for older bipolar ADCs in terms of input range and resolution. The device is specified for operation over the industrial temperature range of -25°C to +85°C. It shares architectural similarities with other SAR converters but distinguishes itself through its integrated sample-and-hold and internal reference buffer.

Analog To Digital Converters (ADC) Replacement Considerations

The ADS7805U is the tube-packaged equivalent of the ADS7805UB. For 12-bit requirements, the ADS7804 offers pin compatibility. Serial interface alternatives within the same series include the ADS7809.