MAX1290ACEI

Analog To Digital Converters (ADC) Overview

The MAX1290ACEI is a low-power, 12-bit analog-to-digital converter (ADC) featuring a successive-approximation architecture. It operates with a single +5V analog supply and includes an on-chip clock, a +2.5V internal reference, and a high-speed byte-wide parallel interface. The device supports a VLOGIC pin for digital supplies ranging from +2.7V to +5.5V. Power consumption is 10mW at the maximum sampling rate of 400ksps. It offers eight single-ended or four pseudo-differential input channels with software-configurable unipolar/bipolar operation. The component is housed in a 28-pin QSOP package and functions within a temperature range of 0°C to +70°C.

Analog To Digital Converters (ADC) Feature Summary

• Integrates a 12-bit SAR ADC with an internal track-and-hold stage and a +2.5V bandgap reference.
• Features a software-configurable analog input multiplexer supporting single-ended and pseudo-differential modes.
• Provides a byte-wide parallel interface with tri-state outputs and an interrupt signal for conversion completion.
• Includes two software-selectable power-down modes to minimize current consumption between conversions.

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 the manufacturer's official documentation to confirm the temperature grade and package type. Ensure that the logic supply voltage requirements align with the system design before procurement. Cross-reference the part number with the latest datasheet revision to confirm availability and compliance status.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a 12-bit resolution and 400ksps sampling rate are required with a single +5V supply. Consider the internal clock option if microprocessor timing resources are limited. Evaluate the parallel interface complexity against available digital I/O lines. Verify that the 28-pin QSOP footprint fits the board layout constraints.

Analog To Digital Converters (ADC) Part Context

This device belongs to the MAX1290/MAX1292 family of 12-bit ADCs. The MAX1290 variant provides eight input channels, whereas the MAX1292 offers four. Both share identical electrical characteristics and interfaces but differ in pin count and channel configuration. The MAX1290ACEI specifically denotes the commercial temperature grade version in a 28-pin QSOP package.

Analog To Digital Converters (ADC) Replacement Considerations

The MAX1292ACEI serves as a pin-compatible alternative with reduced channel count. For +3V operation, the MAX1291AEEI is a related series member requiring different supply voltages. Verify interface compatibility when substituting with other SAR ADCs.