AD9433BSQ-125

Analog To Digital Converters (ADC) Overview

The AD9433BSQ-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 compatible with TTL/CMOS logic levels. It requires a 5.0 V analog supply and a 2.7 V to 3.3 V digital supply. Key performance metrics include a typical SNR of 68 dB at 105 MSPS and an SFDR of 83 dBc at 70 MHz input frequency. The component is housed in a 52-lead TQFP_EP package and functions within an industrial temperature range of −40°C to +85°C.

Analog To Digital Converters (ADC) Feature Summary

• Integrated SFDR optimization circuit allows user-selectable enhancement of spurious-free dynamic range performance across different input signal frequencies.
• On-chip proprietary circuits provide internal voltage reference and track-and-hold functionality, reducing the need for external driver components.
• Supports flexible data output formats, allowing selection between two's complement and offset binary coding via a dedicated control pin.
• Features an on-chip clock duty cycle stabilizer to maintain optimal sampling accuracy regardless of encode clock waveform variations.

Analog To Digital Converters (ADC) Applications

• Cellular infrastructure communication systems
• 3G single- and multicarrier receivers
• Wideband carrier frequency systems
• LMDS and wireless broadband base station units

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to confirm package type and temperature grade. Ensure that the required supply voltages and interface logic levels match the system design constraints before finalizing procurement decisions.

Analog To Digital Converters (ADC) Selection Notes

Select this component when high linearity and wide bandwidth are required for intermediate frequency sampling. Consider the power dissipation characteristics and thermal management requirements associated with the 52-lead TQFP_EP package during the initial design phase.

Analog To Digital Converters (ADC) Part Context

The AD9433 belongs to Analog Devices' family of high-speed IF sampling ADCs. It serves as a direct pin-compatible upgrade to the AD9432, offering increased sampling rates while maintaining the same footprint. This continuity facilitates easier migration for existing designs requiring higher throughput capabilities.

Analog To Digital Converters (ADC) Replacement Considerations

The AD9433 is explicitly documented as a pin-compatible replacement for the AD9432. Designers should verify that the target application can accommodate the slight differences in power consumption and timing specifications between the two models.