Manufacturer Part Number

ADS8381IPFBR

Description

18-bit analog-to-digital converter (ADC) by Texas Instruments. Features a single input channel, using Successive Approximation Register (SAR) architecture. Packaged in a 48-pin TQFP (7x7 mm) housing. Delivers high-precision conversion suitable for demanding data acquisition tasks. Supports external voltage reference, ensuring flexibility in various designs.

Specifications

ADC Resolution: 18 bits

Input Channels: 1

Input Types: Pseudo-differential, single-ended

Sampling Rate: Up to 580,000 samples per second

Data Interface: Parallel

Supply Voltage (Analog): 5V

Supply Voltage (Digital): 2.7V to 5.25V

Operating Temperature: -40°C to 85°C

Package: 48-TQFP (7x7 mm), surface-mount

RoHS Status: ROHS3 Compliant

Moisture Sensitivity Level: 2 (1 year floor life)

REACH Status: Unaffected

ECCN: EAR99

Stock: 802 units available (new, original)

Series: microPOWER™

Product Status: Obsolete

Device Structure

Utilizes SAR (Successive Approximation Register) architecture to achieve high-precision 18-bit analog-to-digital conversion. Single-channel device with a sample-and-hold (S/H) stage integrated. Input structure supports both pseudo-differential and single-ended signals. Requires external voltage reference for flexible application integration. Parallel data interface supports fast data transfer. Compact surface-mount 48-TQFP package optimizes board space.

Performance Characteristics

18-bit resolution for fine granularity and accuracy in signal conversion

Maximum sampling rate of 580ksps delivers fast, real-time data acquisition

Low power consumption, suitable for battery-powered or portable applications

Wide analog and digital voltage supply compatibility for diverse system designs

Reliable operation over extended industrial temperature range

Fast parallel interface enhances throughput in demanding data processing scenarios

Application Environments

Industrial automation and control

Medical instrumentation and diagnostics

Data acquisition systems

High-precision measurement equipment

Testing and laboratory tools

Portable and battery-powered devices where high resolution is required

Selection Guidelines

Choose this model if high resolution (18-bit) and relatively high sampling rate (580ksps) are essential for your application. Verify that your system supports parallel data interfaces and that board space is adequate for a 48-TQFP package. Ensure the application can provide a suitable external voltage reference, and the supply voltages are within supported ranges. For new designs, consider device obsolescence and availability of replacements. This ADC is preferable for accuracy-critical industrial or instrumentation tasks.

Usage Considerations

As this product is obsolete, long-term supply may be limited. Confirm inventory and availability for production quantities. Design the input signal path for the selected input mode (pseudo-differential or single-ended). Manage external voltage reference quality for optimal precision. Observe ESD precautions and proper handling due to MSL 2 sensitivity. Ensure proper thermal management if used in high-precision or high-speed systems. Validate parallel interface compatibility with your system microcontroller or FPGA.

Potential Equivalent/Replacement Models

There are substitute models such as ADS8381IBPFBT. For a complete list of possible equivalents or to select the best alternative, please contact the Ariat-Tech sales team directly for support and up-to-date recommendations if you cannot use the current model or need further technical advice.

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