AD9432BSTZ-80

Analog To Digital Converters (ADC) Overview

The AD9432BSTZ-80 is a 12-bit monolithic sampling analog-to-digital converter (ADC) from Analog Devices, operating at a maximum conversion rate of 105 MSPS. It features an on-chip track-and-hold circuit and input buffer, requiring only a single 5.0 V analog supply and a 3.3 V digital supply (2.7 V to 3.6 V). The device provides a 2.0 V p-p differential analog input range and outputs 12-bit data in two's complement format via TTL/CMOS-compatible pins. Key dynamic performance metrics include a Signal-to-Noise Ratio (SNR) of 67 dB and Spurious-Free Dynamic Range (SFDR) of 80 dB at 49 MHz input frequency when sampled at 105 MSPS. Typical power dissipation is 850 mW.

Analog To Digital Converters (ADC) Feature Summary

• Integrates an on-chip voltage reference and track-and-hold circuit to minimize external component requirements.
• Features a high-speed pipeline architecture with an on-chip input buffer for direct signal interfacing.
• Supports flexible clocking with TTL/CMOS-compatible encode inputs in both differential and single-ended modes.
• Provides latched digital outputs compatible with 3.3 V logic levels for simplified system integration.

Analog To Digital Converters (ADC) Applications

• Communications base stations and zero-IF subsystems
• Wireless local loop (WLL) systems
• Local multipoint distribution service (LMDS)
• HDTV broadcast cameras and film scanners

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'BSTZ' against the manufacturer's official ordering guide to confirm package type and temperature grade. Ensure the design supports the required 5.0 V analog and 3.3 V digital supply rails. Confirm that the PCB layout accommodates the 52-lead LQFP or TQFP_EP package dimensions and thermal requirements specified in the datasheet outline drawings.

Analog To Digital Converters (ADC) Selection Notes

Select this component for applications requiring 12-bit resolution at speeds up to 105 MSPS with low power consumption. Consider the internal reference capability if external precision references are undesirable. Evaluate the 2.0 V p-p input range against the source signal amplitude to ensure optimal SNR performance. Verify compatibility with the system's clock domain and digital logic voltage levels.

Analog To Digital Converters (ADC) Part Context

The AD9432 belongs to Analog Devices' family of high-speed, 12-bit pipeline ADCs designed for ease of use and high dynamic performance. It is fabricated on an advanced BiCMOS process and is available in 52-lead packages including LQFP and TQFP_EP. The device is specified over the industrial temperature range of −40°C to +85°C, making it suitable for demanding commercial and industrial environments.

Analog To Digital Converters (ADC) Replacement Considerations

The AD9432BSVZ-170 is a related variant within the same product family offering similar 12-bit resolution but potentially different speed grades or package options. Verify pinout compatibility and electrical specifications before substitution. Other members of the AD943x series may offer varying sample rates or interface options.