AD9433BSQZ-125

Analog To Digital Converters (ADC) Overview

The AD9433BSQZ-125 is a 12-bit monolithic sampling analog-to-digital converter (ADC) designed for high-performance IF sampling applications. It operates at conversion rates up to 125 MSPS and features an on-chip track-and-hold circuit, internal reference, and clock duty cycle stabilization. The device utilizes a pipeline architecture with differential analog inputs and parallel digital outputs. It requires a 5.0 V analog supply and a 2.7 V to 3.3 V digital supply. Key electrical specifications include a typical SNR of 68 dB at 105 MSPS, SFDR optimization capabilities reaching 83 dBc, and excellent linearity with DNL of ±0.25 LSB and INL of ±0.5 LSB. It is housed in a 52-lead TQFP_EP package.

Analog To Digital Converters (ADC) Feature Summary

• On-chip SFDR optimization circuit allows user-selectable performance tuning between spurious-free dynamic range and signal-to-noise ratio.
• Integrated track-and-hold and voltage reference eliminate the need for external driver components in many applications.
• Supports both two's complement and offset binary data formats with an overrange output signal.
• Differential encode clock input is PECL-compatible and supports single-ended operation.

Analog To Digital Converters (ADC) Applications

• Cellular infrastructure communication systems
• 3G single- and multicarrier receivers
• Wideband carrier frequency systems
• LMDS, wireless broadband, and MMDS base station units
• Cable reverse path communications

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'SQZ' against official Analog Devices documentation to confirm package type and temperature grade. Ensure the design supports the required 5 V analog supply and 2.7–3.3 V digital logic levels. Confirm pin compatibility if replacing legacy components like the AD9432. Check for moisture sensitivity handling requirements during assembly.

Analog To Digital Converters (ADC) Selection Notes

Select this component for wideband and high IF carrier systems requiring outstanding dynamic performance. The AD9433 is suitable for applications needing IF sampling up to 350 MHz. Consider the SFDR mode feature if system dynamic range is limited by discrete spurious content. Verify that the 125 MSPS maximum sample rate aligns with the target Nyquist frequency requirements.

Analog To Digital Converters (ADC) Part Context

The AD9433 is part of Analog Devices' family of high-speed ADCs optimized for intermediate frequency sampling. It is pin-compatible with the AD9432, facilitating direct upgrades from lower-speed variants. The device is fabricated on an advanced BiCMOS process and is specified over the industrial temperature range of −40°C to +85°C.

Analog To Digital Converters (ADC) Replacement Considerations

The AD9433 is pin-compatible with the AD9432. When replacing the AD9432, verify that the higher 125 MSPS sample rate and updated power supply requirements are supported by the existing board design and clocking infrastructure.