THS12082IDA Equivalent & Substitute Parts

Part Overview

The THS12082IDA is a 12-bit pipelined analog-to-digital converter manufactured by Texas Instruments, designed for data acquisition applications requiring simultaneous sampling of 1 or 2 inputs. The device operates with external or internal voltage references and supports both differential and single-ended input configurations. Currently in Last Time Buy status, this component requires identification of suitable alternatives for ongoing design implementations and production continuity.

Substiute Parts

THS12082IDA

Texas InstrumentsIn Stock: 1190THS12082IDA Datasheet

Current PartRFQ

ADS9224RIRHBR

Texas InstrumentsIn Stock: 3585ADS9224RIRHBR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the THS12082IDA is determined by the following critical parameters:

• Resolution: 12-bit conversion capability
• Sampling Rate: Minimum 8M samples per second for equivalent throughput
• Input Configuration: Support for 1 or 2 inputs with differential and single-ended modes
• Architecture: Pipelined topology for simultaneous sampling
• Data Interface: Parallel output for direct system integration
• Supply Voltages: Analog supply at 5V; digital supply range 3V to 5.25V
• Package Compatibility: 32-pin surface mount package
• Environmental Compliance: ROHS3 compliance and operating temperature range -40°C to 85°C

The identified substitute part ADS9224RIRHBR represents a higher-resolution alternative with differing architecture and interface characteristics, requiring design-level evaluation for compatibility.

Parameter Comparison

Engineering Selection Recommendations

The ADS9224RIRHBR is listed as an active product from Texas Instruments with extended availability, providing design continuity for new implementations. Both devices maintain ROHS3 compliance and are manufactured by the same supplier, ensuring consistent quality standards.

Key considerations for selection:

• Resolution Trade-off: ADS9224RIRHBR provides 16-bit resolution versus 12-bit, increasing measurement precision at the cost of reduced sampling rate (3M versus 8M samples per second).
• Interface Conversion: Migration from parallel to SPI data interface requires firmware and PCB-level modifications.
• Thermal Performance: ADS9224RIRHBR supports extended operating temperature range to 125°C, compared to 85°C maximum for THS12082IDA.
• Package Transition: Change from 32-TSSOP to 32-VQFN (5x5) requires PCB layout redesign.
• Supply Voltage Flexibility: ADS9224RIRHBR accepts wider analog supply range (4.5V to 5.5V) and digital supply range (1.65V to 5.5V).

Selection should be based on application requirements for resolution, sampling rate, interface protocol, and thermal operating conditions.

Frequently Asked Questions (FAQ)

Q: Can ADS9224RIRHBR directly replace THS12082IDA without design changes?

A: No. The devices differ in resolution (16-bit vs. 12-bit), sampling rate (3M vs. 8M samples per second), data interface (SPI vs. parallel), architecture (SAR vs. pipelined), and package type (32-VQFN vs. 32-TSSOP). Direct pin-for-pin substitution is not possible. Design modifications are required.

Q: What are the key parameter differences affecting substitution?

A: Critical differences include: sampling rate reduction from 8M to 3M samples per second, data interface change from parallel to SPI, architecture change from pipelined to SAR, input configuration limited to 2 differential inputs only, and package footprint change from 32-TSSOP to 32-VQFN (5x5).

Q: Are both devices RoHS compliant?

A: Yes. Both THS12082IDA and ADS9224RIRHBR are ROHS3 compliant and meet environmental regulatory requirements.

Q: What is the impact of changing from parallel to SPI interface?

A: SPI interface requires serial communication protocol implementation in firmware and different PCB routing compared to parallel output. System integration complexity increases due to serial data handling requirements.

Q: Does the package change affect PCB design?

A: Yes. THS12082IDA uses 32-TSSOP (0.240", 6.10mm width) while ADS9224RIRHBR uses 32-VQFN (5x5). Different footprints, pin assignments, and thermal management approaches are required. PCB layout redesign is necessary.

Q: Which device should be selected for new designs?

A: Selection depends on application requirements. For applications requiring 8M samples per second with parallel interface, alternative sources or design alternatives should be evaluated. For applications where 3M samples per second and SPI interface are acceptable, ADS9224RIRHBR provides an active product with extended availability and thermal range.