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Product Detailed Parameters
- Description：IC ADC 16BIT SAR 48LQFP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Number of Bits：16
- Sampling Rate (Per Second)：2.5M
- Number of Inputs：1
- Input Type：Differential, Pseudo-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：4.75V ~ 5.25V
- Voltage - Supply, Digital：4.75V ~ 5.25V
- Features：Selectable Address
- Operating Temperature：0°C ~ 70°C
- Package / Case：48-LQFP
- Supplier Device Package：48-LQFP (7x7)
- Mounting Type：Surface Mount
- Grade：-
- Qualification：-
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Overview
The LTC2389CLX-16#PBF is a 16-bit, 2.5Msps Successive Approximation Register (SAR) Analog-to-Digital Converter (ADC) manufactured by Analog Devices Inc. It operates from a single 5V supply and features pin-configurable analog input ranges, supporting fully differential, pseudo-differential unipolar, and pseudo-differential bipolar configurations. The device integrates an internal reference with 0.5% initial accuracy. Key electrical specifications include a Differential Nonlinearity (DNL) of 0.1 LSB, Integral Nonlinearity (INL) of 0.3 LSB, Spurious-Free Dynamic Range (SFDR) of 117 dB, and Signal-to-Noise and Distortion Ratio (SINAD) of 96 dB. Power consumption at full speed is 162.5 mW. It is housed in a 48-lead LQFP package.
Feature Summary
- 16-bit resolution with 2.5 Msps sampling rate
- Pin-configurable analog inputs: Fully Differential (±4.096V), Pseudo-Differential Unipolar (0V to 4.096V), and Pseudo-Differential Bipolar (±2.048V)
- Integrated 4.096V reference with 0.5% initial accuracy
- High dynamic performance: 117 dB SFDR and 96 dB SINAD
Applications
- Industrial process control systems requiring high precision
- Medical instrumentation such as ultrasound and patient monitors
- Test and measurement equipment including data acquisition systems
- Automotive sensor interfaces
Procurement Notes
Verify the specific suffix #PBF indicates lead-free packaging compliant with RoHS standards. Confirm the CLX variant corresponds to the commercial temperature range. Check for moisture sensitivity level requirements during storage and handling. Ensure the LQFP-48 footprint matches the PCB design. Validate that the internal reference meets the system's accuracy needs without external calibration.
Selection Notes
Select this component when a single-channel, high-speed, high-resolution ADC is required. The pin-configurable inputs simplify interface design for various signal types without additional conditioning. Compare DNL/INL specs against system linearity requirements. Consider the 162.5 mW power dissipation for thermal management. Evaluate if the integrated reference suffices or if an external higher-precision reference is needed for critical applications.
Part Context
The LTC2389 series includes variants with different resolutions (16-bit, 18-bit) and speeds. The LTC2389CLX-16#PBF specifically denotes the 16-bit version in an LQFP-48 tray package. Related development tools include the DC1826A-E demonstration board for evaluating LTC2389-16 performance. Other family members like LTC2389ILX-18 offer 18-bit resolution.
Replacement Considerations
Direct substitutes within the same family include LTC2389CMS-16#PBF (same function, different package). For 18-bit resolution, consider LTC2389CLX-18#PBF. For dual-channel applications, evaluate the LTC2388 series. Verify pin compatibility and electrical parameter overlaps before substitution.
