ADS800U Equivalent & Substitute Parts

Part Overview

The ADS800U is a 12-bit pipelined analog-to-digital converter manufactured by Texas Instruments, housed in a 28-SOIC surface mount package. This device features a single differential or single-ended input with a 40 MHz sampling rate and operates on 5V analog and digital supply voltages. The ADS800U is classified as Last Time Buy, indicating end-of-life status. Identifying equivalent substitute parts is necessary to ensure design continuity and maintain supply chain reliability for applications requiring 12-bit ADC functionality with pipelined architecture.

Substiute Parts

ADS800U

Texas InstrumentsIn Stock: 2004ADS800U Datasheet

Current PartRFQ

ADC12040CIVYX/NOPB

Texas InstrumentsIn Stock: 976ADC12040CIVYX/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ADS800U is determined by matching the following critical electrical and mechanical parameters:

• Resolution: 12-bit conversion capability
• Sampling Rate: 40 MHz minimum throughput
• Architecture: Pipelined ADC topology
• Input Configuration: Single input channel supporting differential or single-ended modes
• Supply Voltages: 5V analog and digital supplies
• Operating Temperature: -40°C to 85°C range
• Data Interface: Parallel output
• Compliance: ROHS3 and REACH compliance maintained

The ADC12040CIVYX/NOPB meets all electrical specifications but differs in package configuration (32-TQFP versus 28-SOIC) and product status (Active versus Last Time Buy). This substitution is valid where PCB layout and socket compatibility accommodate the alternative package.

Parameter Comparison

Engineering Selection Recommendations

The ADC12040CIVYX/NOPB is a valid electrical substitute for the ADS800U, with all core ADC specifications matching exactly. Both devices maintain ROHS3 compliance and operate within identical temperature ranges. The primary consideration is package compatibility: the ADC12040CIVYX/NOPB uses a 32-TQFP package versus the 28-SOIC of the ADS800U, requiring PCB redesign and socket modification. The ADC12040CIVYX/NOPB holds Active product status, ensuring long-term availability and supply continuity compared to the Last Time Buy status of the ADS800U. Selection should prioritize the ADC12040CIVYX/NOPB for new designs or redesign efforts where package transition is feasible.

Frequently Asked Questions (FAQ)

Q: Can the ADC12040CIVYX/NOPB directly replace the ADS800U without PCB modification?

A: No. The ADC12040CIVYX/NOPB uses a 32-TQFP package while the ADS800U uses 28-SOIC. Direct socket substitution is not possible. PCB layout redesign and component footprint changes are required.

Q: Are the electrical specifications identical between these two parts?

A: Yes. Both devices are 12-bit pipelined ADCs with 40 MHz sampling rate, single input channel, 5V supply operation, and -40°C to 85°C temperature range. Electrical performance is equivalent.

Q: What is the difference in input type between the two parts?

A: The ADS800U supports both differential and single-ended inputs. The ADC12040CIVYX/NOPB supports differential input only. Applications requiring single-ended input operation must retain the ADS800U or identify alternative parts.

Q: Why is the ADC12040CIVYX/NOPB recommended despite package differences?

A: The ADC12040CIVYX/NOPB maintains Active product status, ensuring continued manufacturing and availability. The ADS800U is Last Time Buy, indicating production discontinuation. For long-term supply security, the ADC12040CIVYX/NOPB is the preferred choice where design modifications are acceptable.

Q: Are both parts RoHS compliant?

A: Yes. Both the ADS800U and ADC12040CIVYX/NOPB are ROHS3 compliant and REACH unaffected, meeting environmental and regulatory requirements.