ADS8406IPFBT

Analog To Digital Converters (ADC) Overview

The ADS8406IPFBT is a 16-bit, 1.25 MSPS analog-to-digital converter featuring a pseudo-bipolar, fully differential input architecture. It integrates an internal 4.096-V reference and utilizes a capacitor-based SAR structure with inherent sample-and-hold functionality. The device supports a full 16-bit parallel interface or an 8-bit option via two read cycles. Key electrical parameters include a maximum integral nonlinearity of ±2 LSB and a differential nonlinearity of -1/+1.25 LSB. It operates on a single 5-V analog supply (4.75 V to 5.25 V) and a wide digital I/O supply range of 2.7 V to 5.25 V, consuming 155 mW typical power at maximum throughput.

Analog To Digital Converters (ADC) Feature Summary

• 16-bit resolution with 1.25 MSPS throughput rate
• Pseudo-bipolar, fully differential input range from -VREF to +VREF
• Integrated 4.096-V internal voltage reference
• Full 16-bit or split 8-bit parallel data output interface

Analog To Digital Converters (ADC) Applications

• DWDM systems
• Instrumentation
• High-speed data acquisition systems
• Transducer interface
• Medical instruments
• Communications equipment

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific linearity grade required for the application. The 'I' suffix denotes 15-bit no missing codes with ±4 LSB INL, while the 'B' suffix ensures 16-bit performance with ±2 LSB INL. Confirm the package type is TQFP-48 and the temperature range is industrial (-40°C to 85°C). Ensure ordering suffixes match the desired tape and reel quantity if applicable.

Analog To Digital Converters (ADC) Selection Notes

Select the ADS8406IPFBT when 16-bit accuracy and high speed are critical. The fully differential input rejects common-mode noise, making it suitable for noisy environments. Check that the signal source can drive the 25 pF input capacitance within the 150 ns acquisition time. Ensure the system logic levels are compatible with the 2.7 V to 5.25 V digital supply range.

Analog To Digital Converters (ADC) Part Context

This component belongs to the ADS840x family of high-speed SAR ADCs. It shares pin compatibility with the ADS8412 and ADS8402 models. Unlike the ADS8405 which uses pseudo-differential inputs, the ADS8406 specifically offers fully differential inputs for improved noise immunity. It is characterized for industrial temperature operation.

Analog To Digital Converters (ADC) Replacement Considerations

The ADS8406 is pin-compatible with the ADS8412 and ADS8402. When substituting, verify that the replacement part matches the input configuration (pseudo-differential vs. fully differential) and the required linearity specifications (INL/DNL limits).