MAX1293BEEG

Analog To Digital Converters (ADC) Overview

The MAX1293BEEG is a low-power, 12-bit analog-to-digital converter (ADC) featuring a successive-approximation architecture. It operates with a single +3V analog supply and includes an on-chip clock, a +2.5V internal reference, and a byte-wide parallel interface. The device supports a maximum sampling rate of 250ksps with power consumption of 5.7mW at full speed. It features four software-configurable analog input channels for unipolar/bipolar and single-ended/pseudo-differential operation. The digital interface utilizes a VLOGIC pin allowing compatibility with +1.8V to +5.5V logic supplies. It is housed in a 24-pin QSOP package and operates within a temperature range of -40°C to +85°C.

Analog To Digital Converters (ADC) Feature Summary

• Software-configurable analog input multiplexer supporting four single-ended or two pseudo-differential channels
• Internal +2.5V bandgap reference with user-adjustable logic levels from +1.8V to +3.6V
• Fast wake-up capability with automatic power-down modes reducing supply current significantly between conversions
• Byte-wide parallel interface compatible with standard microprocessors

Analog To Digital Converters (ADC) Applications

• Industrial Control Systems
• Data-Acquisition Systems
• Patient Monitoring Equipment

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix against official documentation to confirm the exact temperature grade and package variant. Ensure that the VLOGIC supply voltage aligns with the target system's digital logic levels before integration. Confirm availability status through authorized distributors as lead times may vary based on production schedules.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a 12-bit resolution and 250ksps sampling rate are required in a compact form factor. The integrated reference and clock simplify circuit design by reducing external component count. Consider the 24-pin QSOP footprint constraints and ensure the source impedance remains below 3kΩ to maintain optimal acquisition performance without additional buffering.

Analog To Digital Converters (ADC) Part Context

This part belongs to the MAX1291/MAX1293 family of low-power ADCs. While the MAX1291 offers eight channels in a 28-pin package, the MAX1293 provides four channels in a smaller 24-pin QSOP. Both share identical electrical characteristics and interfaces, differing primarily in channel count and physical dimensions.

Analog To Digital Converters (ADC) Replacement Considerations

Refer to the MAX1290/MAX1292 data sheet for pin-compatible +5V, 12-bit versions. Check the MAX1261/MAX1263 if tri-stating the INT signal upon CS deactivation is not desired.