ADS8402IBPFBR

Analog To Digital Converters (ADC) Overview

The ADS8402IBPFBR is a 16-bit, 1.25 MSPS analog-to-digital converter (ADC) from Texas Instruments, housed in a 48-lead TQFP package. It features a unipolar differential input range of Vref to –Vref and includes an onboard 4.096-V reference with a buffer. The device utilizes a capacitor-based SAR architecture with zero latency and supports both 8-bit and 16-bit parallel data interfaces. Operating on a wide digital supply (2.7 V to 5.25 V) and a 5 V analog supply, it dissipates approximately 155 mW at maximum throughput. The component is characterized for industrial temperatures ranging from -40°C to +85°C.

Analog To Digital Converters (ADC) Feature Summary

• 16-bit resolution with 1.25 MSPS throughput rate and zero latency
• Unipolar differential input range spanning Vref to –Vref
• Integrated 4.096-V internal voltage reference with onboard buffer
• Flexible 8-bit or 16-bit high-speed parallel interface

Analog To Digital Converters (ADC) Applications

• DWDM systems
• High-speed, high-resolution data acquisition systems
• Medical instruments
• Transducer interfaces
• Communication equipment

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific linearity grade associated with the 'IB' suffix against official documentation before procurement. Confirm that the tape and reel quantity matches project requirements. Ensure power supply decoupling capacitors are placed close to the +VA and +VBD pins as specified in the layout guidelines to maintain signal integrity.

Analog To Digital Converters (ADC) Selection Notes

Select the ADS8402IB variant when strict integral nonlinearity specifications are required, as it offers tighter INL tolerances compared to the standard I-grade devices. Ensure the system design accommodates the separate analog (+VA) and digital (+VBD) power domains. Verify that the host microcontroller can support the required parallel bus timing constraints during read cycles.

Analog To Digital Converters (ADC) Part Context

This component belongs to the ADS840x family of high-speed sampling ADCs. It shares architectural similarities with the ADS8405 but differs in input configuration, supporting unipolar differential inputs rather than single-ended or pseudo-differential options. The IB designation indicates a specific production bin for enhanced linearity performance within the industrial temperature range.

Analog To Digital Converters (ADC) Replacement Considerations

Public confirmed substitute part numbers: None.