ADS8383IBPFBR

Analog To Digital Converters (ADC) Overview

The ADS8383IBPFBR is an 18-bit, 500-kHz successive approximation register (SAR) analog-to-digital converter manufactured by Texas Instruments. It features a unipolar input range and includes an onboard reference buffer. The device supports flexible data transfer via an 8-, 16-, or 18-bit parallel interface. It operates with a digital supply voltage (+VBD) of 2.95 V to 5.25 V and an analog supply (+VA) of 4.75 V to 5.25 V. Power dissipation is 110 mW at the maximum sample rate. The component is housed in a 48-lead TQFP package and is characterized for operation over the industrial temperature range of -40°C to 85°C.

Analog To Digital Converters (ADC) Feature Summary

• 18-bit resolution with no missing codes ensured over the full operating temperature range
• High-speed throughput of 500 kHz with zero latency architecture
• Flexible parallel bus interface supporting 8-bit, 16-bit, and 18-bit data transfers
• Integrated onboard reference buffer and wide digital supply range

Analog To Digital Converters (ADC) Applications

• Medical instruments
• Optical networking systems
• Transducer interfaces
• Magnetometers
• High accuracy data acquisition systems

Analog To Digital Converters (ADC) Procurement Notes

Verify that the specific ordering suffix 'BR' corresponds to the tape and reel packaging configuration containing 1000 units per reel. Confirm the 'I' grade designation matches the required integral linearity specifications of ±10 LSBs. Ensure the procurement documentation explicitly references the 48-pin TQFP package designator PFB to guarantee physical compatibility with the target footprint.

Analog To Digital Converters (ADC) Selection Notes

Select this model when 18-bit resolution and high throughput are critical requirements. The ADS8383IB variant provides tighter differential linearity specifications compared to the ADS8383I variant. Designers must account for the requirement of an external 2.048-V bias voltage source to generate internal circuit currents. The device requires separate analog and digital power supplies with a minimum voltage difference of 2.3 V between +VA and +VBD.

Analog To Digital Converters (ADC) Part Context

This component belongs to the ADS8383 family of high-speed SAR ADCs from Texas Instruments. The IB sub-series denotes enhanced linearity performance relative to the standard I-grade devices. The part utilizes a capacitor-based charge redistribution architecture which inherently includes a sample-and-hold function. It is designed for applications demanding high precision and speed within a compact surface-mount package.

Analog To Digital Converters (ADC) Replacement Considerations

Public datasheets do not list confirmed direct substitute part numbers for the ADS8383IBPFBR. Engineers should evaluate other Texas Instruments 18-bit SAR ADCs based on pin compatibility and electrical parameter matching.