ADS7805U/1KE4

Analog To Digital Converters (ADC) Overview

The ADS7805U/1KE4 is a 16-bit successive approximation register (SAR) analog-to-digital converter manufactured by Texas Instruments. It operates on a single +5V supply with power dissipation under 100mW and features a standard ±10V input range. The device provides a minimum sampling rate of 100kHz and achieves a typical signal-to-noise and distortion ratio (SINAD) of 86dB at a 20kHz input frequency. Integral nonlinearity is specified at ±3 LSB for the high-grade variant, while the standard version offers ±4 LSB. It utilizes an SO-28 package and supports both internal and external reference configurations.

Analog To Digital Converters (ADC) Feature Summary

• Supports full parallel data output with tri-state drivers for direct microprocessor interfacing
• Includes integrated sample-and-hold circuitry with laser-trimmed scaling resistors for ±10V input range
• Operates from a single +5V supply to minimize system complexity and power consumption
• Provides pin-compatible alternative to the 12-bit ADS7804 for design flexibility

Analog To Digital Converters (ADC) Applications

• Industrial process control systems requiring high-resolution analog signal acquisition
• Data acquisition modules utilizing parallel bus architectures
• Precision measurement instruments needing low power consumption and fast conversion rates

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific grade (standard or high-performance) required for your application, as linearity specifications differ between variants. Confirm that the SO-28 tape and reel packaging aligns with your automated assembly equipment capabilities. Ensure compatibility with the -25°C to +85°C industrial temperature range specified for this part number.

Analog To Digital Converters (ADC) Selection Notes

Select the ADS7805U/1KE4 when a 16-bit resolution and 100kHz throughput are necessary within a single-supply environment. Consider the ±3 LSB integral nonlinearity if higher precision is needed compared to the ±4 LSB standard grade. Evaluate the need for hardware versus software calibration based on the chosen external resistor configuration for offset and gain adjustments.

Analog To Digital Converters (ADC) Part Context

This component belongs to the ADS7805 family of 16-bit CMOS sampling ADCs. It shares architectural similarities with other SAR converters but distinguishes itself through its integrated ±10V input range and low-power single-supply operation. The 'E4' suffix indicates lead-free compliance, while '/1K' denotes the tape and reel quantity.

Analog To Digital Converters (ADC) Replacement Considerations

ADS7805U: Identical functional specifications in tube packaging. ADS7805UB: Higher performance grade with ±3 LSB INL in tube packaging. ADS7805UB/1K: Higher performance grade with ±3 LSB INL in tape and reel packaging.