ADS7817UB/2K5 Equivalent & Substitute Parts

Part Overview

The ADS7817UB/2K5 is a 12-bit Analog to Digital Converter (ADC) manufactured by Texas Instruments, configured as a single-input SAR (Successive Approximation Register) architecture device in an 8-SOIC surface mount package. This part operates with external voltage references and communicates via SPI interface, designed for data acquisition applications requiring differential input conversion at 200 kSPS sampling rate.

The ADS7817UB/2K5 carries an Obsolete product status. Equivalent and substitute parts are identified to support ongoing system maintenance, design updates, and procurement continuity where the original part is no longer in active production.

Substiute Parts

ADS7817UB/2K5

Texas InstrumentsIn Stock: 733ADS7817UB/2K5 Datasheet

Current PartRFQ

ADS7816U/2K5

Texas InstrumentsIn Stock: 2062ADS7816U/2K5 Datasheet

Parametric EquivalentRFQ

ADS7816UB/2K5

Texas InstrumentsIn Stock: 912ADS7816UB/2K5 Datasheet

Parametric EquivalentRFQ

ADS7816UC/2K5

Texas InstrumentsIn Stock: 861ADS7816UC/2K5 Datasheet

Parametric EquivalentRFQ

ADS7817UC/2K5

Texas InstrumentsIn Stock: 3760ADS7817UC/2K5 Datasheet

Parametric EquivalentRFQ

ISL267817IBZ-T

Renesas Electronics CorporationIn Stock: 754ISL267817IBZ-T Datasheet

Parametric EquivalentRFQ

ISL267817IBZ-T7A

Renesas Electronics CorporationIn Stock: 1658ISL267817IBZ-T7A Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ADS7817UB/2K5 are qualified based on strict electrical and mechanical parameter matching:

Qualifying Parameters for Substitution:

• Resolution: 12 bits
• Sampling Rate: 200 kSPS
• Number of Inputs: 1
• Input Type: Differential
• Data Interface: SPI
• Architecture: SAR
• Reference Type: External
• Analog Supply Voltage: 5V
• Digital Supply Voltage: 5V
• Operating Temperature Range: -40°C to 85°C
• Package/Case: 8-SOIC (0.154", 3.90mm Width)
• Mounting Type: Surface Mount

All identified substitute parts match these parameters exactly. Substitutes are grouped by manufacturer and product status to facilitate selection based on availability and compliance requirements.

Parameter Comparison

Engineering Selection Recommendations

For Active Production and New Designs:

Texas Instruments ADS7816 and ADS7817 series parts in UC suffix variants (ADS7816UC/2K5, ADS7817UC/2K5) are recommended as primary substitutes. These parts are in Active product status with ROHS3 compliance, ensuring long-term availability and regulatory alignment for new system implementations.

The Renesas ISL267817IBZ-T offers an alternative from a different manufacturer with Active product status and ROHS3 compliance. This part features improved moisture sensitivity level (MSL 1 Unlimited) compared to the original ADS7817UB/2K5 (MSL 2, 1 Year), providing enhanced reliability in high-humidity storage and assembly environments.

For Legacy System Support:

Where existing designs are locked to the ADS7817UB/2K5 designation, the ADS7816UB/2K5 provides direct functional equivalence with Active status and ROHS3 compliance. The ADS7816U/2K5 variant is also available in Active status with identical electrical specifications.

Obsolete Part Considerations:

ISL267817IBZ-T7A carries Obsolete status and should be selected only when existing inventory is available and long-term procurement is not required. The active variant ISL267817IBZ-T is preferred for new applications.

Frequently Asked Questions (FAQ)

Q: Can ADS7816 series parts directly replace ADS7817UB/2K5 in existing designs?

A: Yes. The ADS7816U/2K5, ADS7816UB/2K5, and ADS7816UC/2K5 variants are parametrically equivalent to the ADS7817UB/2K5 across all electrical and mechanical specifications. Pin configuration, package footprint, and functional operation are identical. No circuit modifications are required.

Q: What is the difference between ADS7816UB/2K5 and ADS7816UC/2K5?

A: Both parts are parametrically equivalent with identical electrical specifications, resolution, sampling rate, and package type. The suffix designation indicates internal temperature compensation or grading differences. Selection between these variants should follow the original design specification or datasheet guidance for the target application.

Q: Why is ISL267817IBZ-T preferred over ISL267817IBZ-T7A?

A: ISL267817IBZ-T carries Active product status, ensuring ongoing manufacturer support and long-term availability. ISL267817IBZ-T7A is Obsolete and should be used only when existing inventory is available. For new designs and long-term production, ISL267817IBZ-T is the appropriate selection.

Q: Does the Renesas ISL267817IBZ-T require different PCB layout or assembly procedures?

A: No. The ISL267817IBZ-T is housed in the same 8-SOIC package with identical pin configuration and electrical interface. PCB footprint, assembly process, and reflow profile remain unchanged. The improved MSL rating (1 Unlimited vs. 2, 1 Year) may reduce moisture bake-out requirements in high-humidity environments.

Q: Are all substitute parts ROHS3 compliant?

A: All substitute parts listed carry ROHS3 compliance status. The original ADS7817UB/2K5 is RoHS non-compliant. For applications requiring RoHS compliance, any of the listed substitute parts satisfy regulatory requirements.

Q: What is the significance of MSL (Moisture Sensitivity Level) differences?

A: MSL 2 (1 Year) indicates the component must be used within one year of packaging opening and requires moisture bake-out if storage exceeds specified humidity conditions. MSL 1 (Unlimited) provides indefinite shelf life without moisture sensitivity constraints. The Renesas ISL267817IBZ-T offers superior moisture tolerance for applications with extended storage or high-humidity assembly environments.