MAX1191ETI+

Analog To Digital Converters (ADC) Overview

The MAX1191ETI+ is an ultra-low-power, dual-channel, 8-bit analog-to-digital converter (ADC) operating at a sampling rate of 7.5Msps. It features two fully differential wideband track-and-hold inputs with a bandwidth of 440MHz, supporting both differential and single-ended signals. The device achieves a typical signal-to-noise and distortion ratio (SINAD) of 48.6dB at an input frequency of 1.875MHz while consuming only 12mW in normal operation. It operates from a 2.7V to 3.6V analog supply and a separate 1.8V to 3.6V digital supply. An internal 1.024V precision bandgap reference sets the full-scale range to ±0.512V, though external references are supported. The component utilizes parallel, multiplexed, CMOS-compatible tri-state outputs in offset binary format and is housed in a 5mm x 5mm, 28-pin thin QFN package.

Analog To Digital Converters (ADC) Feature Summary

• Ultra-low power consumption with three distinct power-down modes for energy conservation during idle periods.
• Dual fully differential or single-ended analog inputs with high-speed tracking capabilities.
• Flexible reference architecture allowing selection between internal precision bandgap and external voltage sources.
• Multiplexed tri-state digital outputs compatible with various logic levels via independent digital supply.

Analog To Digital Converters (ADC) Applications

• Ultrasound and medical imaging systems
• IQ baseband sampling for communication receivers
• Battery-powered portable instruments
• Low-power video applications
• WLAN, mobile DSL, and WLL receiver front-ends

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and temperature range specifications. Ensure that the procurement channel provides valid traceability for the Analog Devices Inc./Maxim Integrated product line. Confirm RoHS compliance status as indicated in the official datasheet prior to finalizing acquisition details.

Analog To Digital Converters (ADC) Selection Notes

Select this component when dual-channel conversion with low power dissipation is required. Consider the 7.5Msps sampling rate and 8-bit resolution limits for system bandwidth requirements. Evaluate the need for internal versus external reference configurations based on accuracy needs. Verify compatibility with available clock sources and logic voltage levels for seamless integration into the target design.

Analog To Digital Converters (ADC) Part Context

The MAX1191 belongs to a family of dual 8-bit ADCs designed for high performance and low power. Higher speed variants such as the MAX1192 (22Msps) and MAX1193 (45Msps) offer pin-compatible alternatives. For applications requiring even higher sampling frequencies, the MAX1195 through MAX1198 series provide further options within the same architectural framework.

Analog To Digital Converters (ADC) Replacement Considerations

Pin-compatible replacements include the MAX1192 for 22Msps operation and the MAX1193 for 45Msps operation. These devices maintain the same package and pinout but offer increased sampling rates. Verify electrical characteristics and power consumption differences before substituting.