ADS7834EB/250 Equivalent & Substitute Parts

Part Overview

The ADS7834EB/250 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-VSSOP surface mount package. This component operates with 5V analog and digital supply voltages, supports external and internal reference configurations, and communicates via SPI interface at a 500 kSPS sampling rate.

The ADS7834EB/250 carries Last Time Buy status, indicating discontinued production. Equivalent and substitute parts are necessary to maintain design continuity and ensure long-term component availability for new production runs and field replacements.

Substiute Parts

ADS7834EB/250

Texas InstrumentsIn Stock: 824ADS7834EB/250 Datasheet

Current PartRFQ

ADS7834E/250

Texas InstrumentsIn Stock: 2966ADS7834E/250 Datasheet

Parametric EquivalentRFQ

ADS7834E/2K5

Texas InstrumentsIn Stock: 865ADS7834E/2K5 Datasheet

Parametric EquivalentRFQ

ADS7834EB/2K5

Texas InstrumentsIn Stock: 1612ADS7834EB/2K5 Datasheet

Parametric EquivalentRFQ

LTC1860LCMS8#PBF

Analog Devices Inc.In Stock: 1124LTC1860LCMS8#PBF Datasheet

MFR RecommendedRFQ

LTC1860LIMS8#PBF

Analog Devices Inc.In Stock: 1515LTC1860LIMS8#PBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ADS7834EB/250 is determined by the following critical parameters: 12-bit resolution, SPI digital interface, SAR architecture, single differential input, 5V supply voltage operation, and 8-pin surface mount package compatibility.

Substitute parts are grouped into two categories:

Parametric Equivalents (Texas Instruments ADS7834 Series): Parts ADS7834E/250, ADS7834E/2K5, and ADS7834EB/2K5 maintain identical electrical specifications and package form factors. These parts differ only in tape reel quantity designations (250-unit and 2500-unit reels) and represent direct functional replacements with no design modifications required.

Manufacturer Recommended Alternatives (Analog Devices LTC1860 Series): Parts LTC1860LCMS8#PBF and LTC1860LIMS8#PBF provide functional substitution with design considerations. These devices maintain 12-bit resolution, SPI interface, SAR architecture, and single differential input capability. However, they operate at reduced supply voltage ranges (2.7V ~ 3.6V), lower sampling rate (150 kSPS), and different operating temperature ranges, requiring circuit evaluation before implementation.

Parameter Comparison

Engineering Selection Recommendations

Direct Replacement (No Design Changes Required):

ADS7834E/250, ADS7834E/2K5, and ADS7834EB/2K5 are direct parametric equivalents to the ADS7834EB/250. These parts maintain identical electrical performance, supply voltage requirements, sampling rate, and operating temperature range. Selection among these three parts depends solely on tape reel quantity availability and procurement requirements. ADS7834EB/2K5 carries Active product status, providing superior long-term availability compared to Last Time Buy alternatives.

Alternative Substitution (Design Evaluation Required):

LTC1860LCMS8#PBF and LTC1860LIMS8#PBF from Analog Devices provide functional substitution with electrical parameter differences. These parts operate at 2.7V ~ 3.6V supply voltages, requiring power supply circuit modifications from the original 5V design. The reduced sampling rate of 150 kSPS versus 500 kSPS may impact applications requiring higher conversion speeds. LTC1860LIMS8#PBF supports the full -40°C ~ 85°C operating temperature range matching the original part, while LTC1860LCMS8#PBF is limited to 0°C ~ 70°C. Both Analog Devices parts carry Active product status and provide unlimited moisture sensitivity level (MSL 1), indicating superior shelf life characteristics.

Frequently Asked Questions (FAQ)

Q: Can ADS7834E/250 and ADS7834E/2K5 be used interchangeably with ADS7834EB/250?

A: Yes. These parts are parametric equivalents with identical electrical specifications, supply voltages, sampling rates, and package configurations. The designations differ only in tape reel quantities (250-unit versus 2500-unit reels). No circuit modifications are required.

Q: What are the key differences between Texas Instruments ADS7834 and Analog Devices LTC1860 substitutes?

A: The LTC1860 series operates at 2.7V ~ 3.6V supply voltages compared to 5V for the ADS7834, requires external reference only (no internal reference option), and provides a lower 150 kSPS sampling rate versus 500 kSPS. Circuit redesign is necessary for LTC1860 implementation.

Q: Is LTC1860LCMS8#PBF suitable for applications requiring -40°C ~ 85°C operation?

A: No. LTC1860LCMS8#PBF operates only within 0°C ~ 70°C temperature range. For extended temperature applications, LTC1860LIMS8#PBF supports -40°C ~ 85°C operation.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 Compliant status, meeting environmental and regulatory requirements equivalent to the original ADS7834EB/250.

Q: What is the significance of product status differences?

A: ADS7834EB/2K5, LTC1860LCMS8#PBF, and LTC1860LIMS8#PBF carry Active product status, indicating ongoing manufacturing and long-term availability. ADS7834E/250 and ADS7834E/2K5 are Last Time Buy, indicating discontinued production with limited future availability.

Q: Can the 8-VSSOP and 8-MSOP packages be used interchangeably on the same PCB?

A: No. While both packages are 8-pin surface mount devices with 0.118" width, they have different pin configurations and footprints. PCB layout modifications are required when switching between package types.