ADS8321EB/250 Equivalent & Substitute Parts

Part Overview

The ADS8321EB/250 is a 16-bit Analog to Digital Converter (ADC) manufactured by Texas Instruments, classified as a microPOWER™ series data acquisition component. This SAR (Successive Approximation Register) architecture device features a single differential, pseudo-differential, or single-ended input with SPI data interface and external reference capability. The component operates across the industrial temperature range of -40°C to 85°C and is supplied in an 8-VSSOP surface mount package. With an active product status and ROHS3 compliance, the ADS8321EB/250 serves applications requiring low-power, high-resolution analog signal digitization. Equivalent and substitute parts are identified based on matching electrical specifications, package compatibility, and functional architecture to ensure seamless integration in existing designs.

Substiute Parts

ADS8321EB/250

Texas InstrumentsIn Stock: 1301ADS8321EB/250 Datasheet

Current PartRFQ

ADS8321E/250

Texas InstrumentsIn Stock: 1698ADS8321E/250 Datasheet

Parametric EquivalentRFQ

ADS8321EB/2K5

Texas InstrumentsIn Stock: 2397ADS8321EB/2K5 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ADS8321EB/250 are identified as parametric equivalents within the ADS8321 base product family. Substitution eligibility is determined by matching the following critical parameters:

• Resolution: 16-bit ADC architecture
• Sampling Rate: 100k samples per second
• Input Configuration: Single input with differential, pseudo-differential, and single-ended capability
• Data Interface: SPI protocol
• Supply Voltages: 5V analog and digital supplies
• Package: 8-VSSOP surface mount package
• Operating Temperature Range: -40°C to 85°C
• Compliance: ROHS3 compliant, MSL 2 rating

The identified substitutes—ADS8321E/250 and ADS8321EB/2K5—maintain identical electrical and mechanical specifications. Differences exist only in packaging format (Cut Tape vs. Digi-Reel®) and tape reel quantities, which do not affect functional performance or circuit compatibility.

Parameter Comparison

Engineering Selection Recommendations

All three parts—ADS8321EB/250, ADS8321E/250, and ADS8321EB/2K5—are active products from Texas Instruments with identical electrical and mechanical specifications. Selection between these parts should be based on procurement requirements:

• ADS8321EB/250: Cut Tape packaging format with 250-unit reel quantity
• ADS8321E/250: Cut Tape packaging format with 250-unit reel quantity
• ADS8321EB/2K5: Digi-Reel® packaging format with 2,500-unit reel quantity

All variants maintain ROHS3 compliance and MSL 2 moisture sensitivity rating, ensuring compatibility with standard surface mount assembly processes and environmental regulations. The choice between variants depends on volume requirements and supply chain logistics rather than functional performance.

Frequently Asked Questions (FAQ)

Q: Are ADS8321E/250 and ADS8321EB/2K5 direct substitutes for ADS8321EB/250?

A: Yes. All three parts share identical electrical specifications, including 16-bit resolution, 100k sampling rate, SPI interface, 5V supply requirements, and 8-VSSOP package. They are functionally interchangeable in circuit design and PCB layout.

Q: What is the difference between the part numbers?

A: The differences are packaging-related. The suffix designates the packaging format (Cut Tape vs. Digi-Reel®) and reel quantity (250 units vs. 2,500 units). These variations do not affect component performance or electrical characteristics.

Q: Can I use ADS8321EB/2K5 in place of ADS8321EB/250 on the same PCB?

A: Yes. Both parts use the identical 8-VSSOP surface mount package with the same pinout, footprint, and electrical interface. No PCB redesign or firmware modification is required.

Q: Are all three parts ROHS3 compliant?

A: Yes. ADS8321EB/250, ADS8321E/250, and ADS8321EB/2K5 are all ROHS3 compliant with MSL 2 moisture sensitivity rating, meeting standard environmental and regulatory requirements.

Q: Which part should I select for high-volume production?

A: ADS8321EB/2K5 is optimized for high-volume applications due to its 2,500-unit Digi-Reel® packaging format, reducing handling and logistics overhead. For lower volumes or just-in-time procurement, ADS8321EB/250 or ADS8321E/250 with 250-unit reel quantities are appropriate.

Q: Do these parts require different PCB layout or design considerations?

A: No. All three parts share identical pinout, package dimensions, and electrical requirements. Existing PCB designs and layouts are fully compatible across all variants without modification.