ADS574KPG4

Analog To Digital Converters (ADC) Overview

The ADS574KPG4 is a 12-bit successive approximation analog-to-digital converter manufactured by Texas Instruments. It integrates a sampling capacitor array, internal clock, microprocessor interface, and three-state outputs into a single CMOS device. The component operates from a single +5V supply with optional VEE for mode selection. Key electrical specifications include a maximum throughput time of 25 μs for 12-bit conversions at a sampling rate of 40 kHz. It supports unipolar (0 to +10V, 0 to +20V) and bipolar (±5V, ±10V) input ranges via internal scaling resistors. The K suffix denotes a linear temperature range of 0°C to +70°C with a guaranteed linearity error of ±1/2 LSB.

Analog To Digital Converters (ADC) Feature Summary

• Integrated 12-bit SAR ADC with internal sampling, reference, and microprocessor interface
• Single +5V supply operation with low power consumption (max 100mW)
• Internal scaling resistors support 0-10V, 0-20V, ±5V, and ±10V input ranges
• Drop-in replacement for ADC574 with selectable S/H Control or Emulation modes

Analog To Digital Converters (ADC) Applications

• Industrial process control systems requiring 12-bit precision
• Data acquisition systems replacing legacy ADC574 designs
• Microprocessor-based measurement instruments
• Programmable logic controller (PLC) analog input modules

Analog To Digital Converters (ADC) Procurement Notes

Verify the package type corresponds to the 'P' suffix, which indicates a 0.6-inch wide plastic DIP. Confirm the 'K' suffix matches the required commercial temperature range of 0°C to +70°C. Ensure the design accounts for the specific pinout differences between the ADS574 and its predecessor, particularly regarding Pin 7 and Pin 11 functionality.

Analog To Digital Converters (ADC) Selection Notes

Select the ADS574KPG4 when a direct replacement for the ADC574 is needed with reduced power consumption and single-supply capability. Choose this model over the J/U variants if the application requires tighter linearity accuracy (±1/2 LSB vs ±1 LSB). Ensure the system can accommodate the 28-pin DIP footprint and that the 40 kHz sampling rate meets the signal bandwidth requirements.

Analog To Digital Converters (ADC) Part Context

The ADS574 series serves as a modernized successor to the Burr-Brown ADC574, leveraging advanced CMOS technology to eliminate the need for external sample-and-hold amplifiers in many applications. The K-series specifically targets commercial environments where cost-effective, reliable conversion is prioritized over extended industrial temperature ranges.

Analog To Digital Converters (ADC) Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.