ADS574KP

Analog To Digital Converters (ADC) Overview

The ADS574KP is a 12-bit successive approximation analog-to-digital converter manufactured by Texas Instruments (originally Burr-Brown). It utilizes a capacitor array DAC implemented in low-power CMOS technology. The device integrates an internal clock, microprocessor interface, three-state outputs, and scaling resistors for input ranges of 0V to +10V, 0V to +20V, ±5V, or ±10V. It operates from a single +5V supply with optional VEE for sampling mode control. Key electrical parameters include a maximum throughput time of 25 μs for 12-bit conversions, a sampling rate of 40 kHz, and a typical signal-to-noise ratio of 72 dB at 25°C.

Analog To Digital Converters (ADC) Feature Summary

• Complete sampling A/D with internal reference, clock, and microprocessor interface
• Eliminates external sample/hold amplifiers in most applications via internal S/H
• Single +5V supply operation with low power consumption (max 100mW)
• Guaranteed AC and DC performance with no missing codes resolution

Analog To Digital Converters (ADC) Applications

• Microprocessor-based data acquisition systems
• Industrial process control monitoring
• Instrumentation requiring 12-bit precision

Analog To Digital Converters (ADC) Procurement Notes

Verify the package type corresponds to the KP suffix, which indicates a 0.6-inch wide 28-pin plastic DIP. Confirm that the design supports the specific voltage requirements, including the optional VEE pin for selecting between Control Mode and ADC574 Emulation Mode. Ensure proper decoupling with a 10 μF tantalum capacitor on the +5V supply.

Analog To Digital Converters (ADC) Selection Notes

Select the ADS574KP when a drop-in replacement for the ADC574 is required with lower power consumption and single-supply capability. Choose this component if the application demands a 40 kHz sampling rate and 12-bit resolution without external sample-and-hold circuitry. Consider the 0.6-inch DIP package constraints for PCB layout and thermal management.

Analog To Digital Converters (ADC) Part Context

The ADS574 series was originally produced by Burr-Brown Corporation before its acquisition by Texas Instruments. The KP suffix specifically denotes the 0.6-inch wide 28-pin plastic DIP package variant within the ADS574 family, designed to replace older ADC574 models in existing hardware designs.

Analog To Digital Converters (ADC) Replacement Considerations

The ADS574 is explicitly documented as a replacement for the ADC574. When substituting, ensure the VEE pin (Pin 11) is connected appropriately: to +5V for Control Mode or to 0V/-15V for ADC574 Emulation Mode. Pin 7 (NC) may connect to +15V in legacy sockets without affecting operation.