MAX19705ETM

Analog Front End (AFE) Overview

The MAX19705ETM is a low-power analog front-end (AFE) featuring a 7.5 Msps, 10-bit ADC and a 12-bit DAC. It operates on a single 1.8V or 2.7V to 3.3V supply with a typical power consumption of 2.22W. The device integrates four differential analog inputs, a programmable gain amplifier (PGA), and a reference voltage buffer. Communication is handled via a standard 3-wire serial interface compatible with SPI. Key performance metrics include a signal-to-noise ratio (SNR) of 55.1 dB and a reference voltage of 1.024V. It functions within an industrial temperature range of -40°C to +85°C.

Analog Front End (AFE) Feature Summary

• Integrated 4-channel AFE with 7.5 Msps sampling rate
• Single-supply operation at 1.8V or 2.7V–3.3V
• Built-in PGA and 1.024V reference buffer
• 3-Wire/Serial digital interface

Analog Front End (AFE) Applications

• Portable medical instrumentation
• Industrial process control systems
• Battery-powered data acquisition devices

Analog Front End (AFE) Procurement Notes

Verify component status as the MAX19705ETM+T variant is listed as obsolete in public distributor records. Confirm availability through authorized Analog Devices channels or secondary markets if production units are required for replacement.

Analog Front End (AFE) Selection Notes

Select this component when a compact, low-power solution is needed for multi-channel signal conditioning. Ensure the system requires a 10-bit resolution at 7.5 Msps and can accommodate the specific 1.024V internal reference architecture.

Analog Front End (AFE) Part Context

This part belongs to the MAX19705 series of low-power AFEs from Maxim Integrated. It is designed to simplify signal chain design by combining amplification, filtering, and conversion in a single package, reducing board space compared to discrete solutions.

Analog Front End (AFE) Replacement Considerations

Public documentation lists the MAX19707ETM+ as a related active product in the same family. Verify pin compatibility and parameter differences before substitution.