ADS574KE

Analog To Digital Converters (ADC) Overview

The ADS574KE is a 12-bit successive approximation analog-to-digital converter manufactured by Texas Instruments (originally Burr-Brown). It integrates a sampling A/D with an internal reference, clock, and microprocessor interface. The device operates on a single +5V supply with optional VEE for mode control. Key electrical parameters include a maximum throughput time of 25μs for 12-bit conversions, a sampling rate of 40kHz, and a typical signal-to-noise ratio of 72dB. It features three-state outputs and supports input ranges of 0V to +10V, 0V to +20V, ±5V, or ±10V.

Analog To Digital Converters (ADC) Feature Summary

• Complete 12-bit ADC with internal sampling, reference, and microprocessor interface
• Fast acquisition and conversion with 25μs maximum throughput time
• Eliminates external sample/hold amplifiers in most applications via Control Mode
• Single +5V supply operation with low power consumption of 100mW max

Analog To Digital Converters (ADC) Applications

• Microprocessor-based data acquisition systems
• Industrial process control monitoring
• Test and measurement equipment requiring 12-bit resolution

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix KE indicates the 0.3-inch Plastic DIP package with a temperature range of 0°C to +70°C and linearity error of ±1/2 LSB. Confirm that the source document identifies the manufacturer as Burr-Brown Corporation, now part of Texas Instruments. Ensure compatibility with existing ADC574 sockets if replacing legacy designs.

Analog To Digital Converters (ADC) Selection Notes

Select the ADS574KE when a drop-in replacement for the ADC574 is required with lower power consumption. Choose this model if the application requires a single +5V supply and can utilize the internal sample/hold in Control Mode. Verify that the 0.3-inch DIP package fits the target PCB footprint and that the commercial temperature range meets system requirements.

Analog To Digital Converters (ADC) Part Context

The ADS574 series was originally produced by Burr-Brown Corporation before being acquired by Texas Instruments. The datasheet PDS-1104F documents the device as a CMOS analog-to-digital converter using a capacitor array (CDAC) technology. It serves as a direct functional replacement for the older ADC574 models while offering improved performance characteristics such as reduced power dissipation.

Analog To Digital Converters (ADC) Replacement Considerations

The ADS574 is explicitly documented as a replacement for the ADC574. When substituting, ensure Pin 11 (VEE) is connected to +5V for Control Mode or 0V to -15V for Emulation Mode to match previous circuit behavior.