AD9876ABSTRL

Overview

The AD9876ABSTRL is a single-supply broadband modem mixed-signal front end (MxFE) IC from Analog Devices. It integrates a transmit path with a 12-bit DAC and interpolation filter, and a receive path with a 12-bit ADC, programmable gain amplifier (PGA), and low-pass filter (LPF). The device operates on a 3.3 V supply and includes an internal PLL clock multiplier. It supports input data rates up to 64 MSPS and provides differential current outputs for the transmitter. The component is housed in a 48-lead LQFP package and is specified for industrial temperatures ranging from -40°C to +85°C.

Feature Summary

• Integrated 12-bit TxDAC+ with selectable 2x or 4x interpolation filters
• Receive path featuring 12-bit ADC, PGA (-6 dB to +36 dB), and LPF (12 MHz or 26 MHz)
• Internal PLL clock multiplier generating clocks from a single crystal input
• Voltage Regulator Controller (VRC) for external linear regulator implementation

Applications

• Powerline Networking
• Home Phone Networking
• xDSL Systems
• Broadband Wireless Applications
• Home RF Systems

Procurement Notes

Verify the specific suffix ABSTRL against the manufacturer's ordering guide to confirm the tape and reel packaging option and industrial temperature range. Confirm that the source document explicitly lists this exact part number variant as available, as distribution listings may vary by region and date.

Selection Notes

Select the AD9876ABSTRL for applications requiring a single-chip solution for broadband modem signal processing. Ensure the system design accommodates the 3.3 V single-supply requirement and utilizes the internal PLL for clock generation. Consider the 48-lead LQFP footprint for PCB layout constraints.

Part Context

The AD9876 is pin-compatible with the 10-bit AD9875, allowing for potential design flexibility between resolution levels within the same package. Both devices share the 48-lead LQFP form factor and are designed for similar broadband modem front-end applications.

Replacement Considerations

The AD9875 is a documented pin-compatible alternative offering 10-bit resolution instead of 12-bit. Verify if the reduced resolution meets the dynamic performance requirements of the specific application before substitution.