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Product Detailed Parameters
- Description：IC ADC 16BIT SAR 48QFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- Number of Bits：16
- Sampling Rate (Per Second)：250k
- Number of Inputs：1
- Input Type：Differential
- Data Interface：SPI, Parallel
- Configuration：S/H-ADC
- Ratio - S/H:ADC：1:01
- Number of A/D Converters：1
- Architecture：SAR
- Reference Type：External, Internal
- Voltage - Supply, Analog：5V
- Voltage - Supply, Digital：5V
- Features：-
- Operating Temperature：-40°C ~ 85°C
- Package / Case：48-WFQFN Exposed Pad
- Supplier Device Package：48-QFN (7x7)
- Mounting Type：Surface Mount
- Grade：-
- Qualification：-
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Overview
The LTC2391IUK-16#TRPBF is a 16-bit, 250ksps successive approximation register (SAR) analog-to-digital converter manufactured by Analog Devices Inc. It operates from a single 5V supply and supports a ±4.096V fully differential input range. The device features a guaranteed 0.5% initial accuracy internal reference with a maximum temperature coefficient of ±20ppm/°C. Key performance metrics include a typical SNR of 94dB at fIN = 20kHz, ±2LSB max INL, and no missing codes at 16 bits. Power dissipation is 95mW at full throughput, with nap and sleep modes for reduced power consumption.
Feature Summary
- 16-bit resolution with 250ksps throughput rate
- 94dB typical SNR and ±2LSB max INL
- Internal precision reference (4.096V, ±20ppm/°C)
- Parallel and serial interface options with no cycle latency
Applications
- Medical Imaging
- High Speed Data Acquisition
- Industrial Process Control
- Instrumentation
Procurement Notes
Verify the I-grade temperature rating (-40°C to 85°C) matches system requirements. Confirm the QFN package compatibility with PCB footprint designs. Ensure the TRPBF suffix indicates tape and reel packaging for automated assembly processes.
Selection Notes
Select this component for applications requiring high dynamic range with a single 5V supply. The internal reference simplifies design but external references may be used for higher accuracy. Consider the parallel or serial interface based on digital system constraints and pin count availability.
Part Context
This part belongs to the LTC2391-16 family, which includes variants with different packages (LQFP, QFN) and temperature grades (C, I, H). The UK suffix denotes the 48-lead 7mm x 7mm Plastic QFN package. The #TRPBF suffix indicates lead-free finish and tape and reel shipping format.
Replacement Considerations
Direct replacements within the same family include LTC2391CUK-16#TRPBF (commercial grade) or LTC2391HLX-16#PBF (high-temp LQFP). Verify pinout and electrical specifications match before substitution.
