MAX5863ETM

Analog Front End (AFE) Overview

The MAX5863ETM+ is an ultra-low-power, high-dynamic performance analog front end (AFE) featuring dual 8-bit receive ADCs and dual 10-bit transmit DACs. It operates with a 7.5Msps sampling rate, consuming 22.8mW in transceiver mode at fCLK = 7.5MHz. The device supports simultaneous or independent operation for FDD and TDD modes via a 3-wire serial interface. It integrates a 1.024V internal voltage reference and accepts full-scale 1Vp-p differential I-Q inputs. Digital I/O power ranges from +1.8V to +3.3V, while analog supply is +2.7V to +3.3V. The component is housed in a 48-lead thin QFN package.

Analog Front End (AFE) Feature Summary

• Integrated dual 8-bit ADCs and dual 10-bit DACs for compact RF transceiver designs
• Ultra-low power consumption of 22.8mW in transceiver mode at 7.5Msps
• High dynamic performance with 48.5dB SINAD (ADC) and 73dBc SFDR (DAC)
• Excellent channel matching with ±0.03° phase and ±0.03dB gain accuracy

Analog Front End (AFE) Applications

• 3G wireless terminals
• Portable communication devices such as mobile phones and PDAs
• Fixed and mobile broadband wireless modems
• WLAN applications
• Narrowband and broadband CDMA systems

Analog Front End (AFE) Procurement Notes

The MAX5863ETM+ is listed as an End-of-Life (EOL) product by Analog Devices/Maxim Integrated. Distribution channels indicate the item is discontinued and unavailable for new procurement. Verification of current stock status through authorized distributors is required, though availability is expected to be zero. Designers should consider obsolescence management strategies.

Analog Front End (AFE) Selection Notes

Select this component for portable RF applications requiring low power and high linearity. Ensure the design accommodates the 48-TQFN (7mm x 7mm) package constraints. Verify that the system logic levels are compatible with the +1.8V to +3.3V digital I/O range. The internal 1.024V reference may eliminate external components, but board layout must support full-differential signal integrity for optimal SINAD and SFDR performance.

Analog Front End (AFE) Part Context

This part belongs to the MAX5863 series of analog front ends designed for wireless communications. It combines data conversion functions into a single chip to reduce board space and power. The ETM suffix denotes the specific thermal and packaging variant within the Maxim Integrated portfolio, now under Analog Devices Inc.

Analog Front End (AFE) Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Due to the EOL status, alternative solutions require evaluation of newer AFE families from Analog Devices or third-party manufacturers with comparable 7.5Msps rates and pin compatibility.