ADS8401IPFBT

Analog To Digital Converters (ADC) Overview

The ADS8401IPFBT is a 16-bit, 1.25 MSPS successive approximation register (SAR) analog-to-digital converter in a 48-pin TQFP package. It features a unipolar single-ended input range of 0 V to Vref and includes an onboard 4.096-V reference with a buffer. The device operates with a +VA supply of 4.75 V to 5.25 V and a digital supply (+VBD) of 2.95 V to 5.25 V. Key electrical parameters include a maximum conversion time of 610 ns, 86 dB SNR at 100 kHz, and typical power dissipation of 155 mW at full throughput.

Analog To Digital Converters (ADC) Feature Summary

• 16-bit resolution with no missing codes ensured over temperature
• Internal 4.096-V reference with onboard buffer
• High-speed parallel interface supporting 8-bit or 16-bit data transfer
• Zero latency architecture with inherent sample-and-hold

Analog To Digital Converters (ADC) Applications

• DWDM systems
• Instrumentation
• Medical instruments
• Transducer interface
• Communication equipment

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific linearity grade required for the application. The 'I' suffix denotes ±6 LSB integral linearity with 15-bit no-missing-code guarantee, while the 'B' suffix offers ±3.5 LSB INL with 16-bit no-missing-code performance. Confirm that the PFBT packaging corresponds to the tape and reel quantity of 250 units as specified in the ordering information.

Analog To Digital Converters (ADC) Selection Notes

Select the ADS8401IBPFBT variant if strict 16-bit monotonicity and higher integral linearity accuracy are required. Ensure the analog source impedance can charge the 25 pF input capacitance within the 150 ns acquisition time. Verify that the digital supply voltage difference between +VA and +VBD remains above 2.3 V during operation.

Analog To Digital Converters (ADC) Part Context

This component belongs to the ADS840x family of micro-power sampling ADCs from Texas Instruments. It shares the 48-lead TQFP form factor and high-speed SAR architecture with related models like the ADS8405 and ADS8411, though pinouts and specific interface configurations may vary across the series.

Analog To Digital Converters (ADC) Replacement Considerations

Public confirmed substitute part numbers: ADS8405IBPFBT, ADS8411IBPFBTG4.