THS12082CDA Equivalent & Substitute Parts

Part Overview

The THS12082CDA 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 classified as Last Time Buy, alternative components may be necessary for new designs or when inventory becomes unavailable.

Substiute Parts

THS12082CDA

Texas InstrumentsIn Stock: 955THS12082CDA Datasheet

Current PartRFQ

ADS9224RIRHBR

Texas InstrumentsIn Stock: 3585ADS9224RIRHBR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The ADS9224RIRHBR is identified as a manufacturer-recommended substitute for the THS12082CDA. Substitution eligibility is determined by the following criteria:

Functional Compatibility Parameters:

• Both devices are Texas Instruments data acquisition ADCs
• Both support simultaneous sampling capability
• Both provide multiple input channels (THS12082CDA: 1-2 inputs; ADS9224RIRHBR: 2 inputs)
• Both support differential input configuration
• Both include internal and external reference options

Compliance & Certification Alignment:

• Both devices maintain ROHS3 compliance
• Both devices are REACH unaffected
• Both devices have MSL rating of 2 (1 Year)
• Both are surface-mount packages

Key Differences Affecting Selection:

• Resolution: THS12082CDA (12-bit) vs. ADS9224RIRHBR (16-bit)
• Architecture: THS12082CDA (Pipelined) vs. ADS9224RIRHBR (SAR)
• Sampling Rate: THS12082CDA (8M) vs. ADS9224RIRHBR (3M)
• Data Interface: THS12082CDA (Parallel) vs. ADS9224RIRHBR (SPI)
• Package: THS12082CDA (32-TSSOP) vs. ADS9224RIRHBR (32-VQFN)
• Operating Temperature: THS12082CDA (0°C ~ 70°C) vs. ADS9224RIRHBR (-40°C ~ 125°C)

Parameter Comparison

Engineering Selection Recommendations

Selection between THS12082CDA and ADS9224RIRHBR must account for application-specific requirements and the Last Time Buy status of the THS12082CDA.

THS12082CDA Selection Criteria:

• Applications requiring 8 Msps sampling rate
• Designs utilizing parallel data interface
• Systems operating within 0°C to 70°C temperature range
• Existing inventory availability (847 Pcs in stock)

ADS9224RIRHBR Selection Criteria:

• New designs requiring extended operating temperature range (-40°C to 125°C)
• Applications benefiting from 16-bit resolution
• Systems utilizing SPI serial interface
• Designs requiring dual independent A/D converters
• Extended product lifecycle (Active status)
• Higher inventory availability (3524 Pcs in stock)

Both devices maintain equivalent compliance certifications (ROHS3, REACH unaffected, MSL 2) and support simultaneous sampling with configurable reference sources. Package transition from 32-TSSOP to 32-VQFN requires PCB layout modification. Digital supply voltage range of ADS9224RIRHBR (1.65V ~ 5.5V) provides greater flexibility compared to THS12082CDA (3V ~ 5.25V).

Frequently Asked Questions (FAQ)

Q: Can ADS9224RIRHBR directly replace THS12082CDA without circuit modification?

A: No. While both are Texas Instruments data acquisition ADCs with simultaneous sampling capability, direct replacement requires circuit redesign due to: (1) different package types (32-TSSOP vs. 32-VQFN), (2) different data interfaces (parallel vs. SPI), (3) different supply voltage ranges, and (4) different pin configurations.

Q: What is the primary reason to consider substitution?

A: The THS12082CDA is classified as Last Time Buy, indicating discontinued production. The ADS9224RIRHBR is the manufacturer-recommended alternative for new designs and long-term availability.

Q: How do the sampling rates compare?

A: THS12082CDA operates at 8 Msps (megasamples per second), while ADS9224RIRHBR operates at 3 Msps. Applications requiring higher sampling rates must retain the THS12082CDA or select alternative components.

Q: What are the package differences?

A: THS12082CDA uses 32-TSSOP (thin shrink small outline package, 6.10mm width), while ADS9224RIRHBR uses 32-VQFN (very thin quad flat no-lead, 5x5mm). These require different PCB footprints and soldering processes.

Q: Are the input configurations equivalent?

A: No. THS12082CDA supports both differential and single-ended inputs with 1 or 2 input channels. ADS9224RIRHBR supports only differential inputs with 2 fixed input channels. Single-ended input applications cannot use ADS9224RIRHBR without external signal conditioning.

Q: What is the resolution difference impact?

A: THS12082CDA provides 12-bit resolution, while ADS9224RIRHBR provides 16-bit resolution. Higher resolution improves signal-to-noise ratio and measurement precision but may require different firmware scaling and calibration procedures.

Q: Do both devices support the same reference voltage options?

A: Yes. Both THS12082CDA and ADS9224RIRHBR support external and internal reference voltage configurations, providing equivalent flexibility in reference circuit design.

Q: What is the operating temperature range difference?

A: THS12082CDA operates from 0°C to 70°C (commercial range), while ADS9224RIRHBR operates from -40°C to 125°C (industrial range). Applications requiring extended temperature operation must use ADS9224RIRHBR.

Q: Are the data interfaces compatible?

A: No. THS12082CDA uses parallel data interface, while ADS9224RIRHBR uses SPI serial interface. This requires different microcontroller interface circuits and firmware implementation.