AC1226 Thermocouple Compensator Equivalent & Substitute Parts

Part Overview

The AC1226 is an Interface Integrated Circuit (IC) thermocouple compensator manufactured by Analog Devices Inc., housed in an 8-DIP package. This component functions as a thermocouple conditioner with voltage input and thermocouple output capabilities. The AC1226 is classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing system maintenance and new design implementations where legacy compatibility is required.

Substiute Parts

AC1226

Analog Devices Inc.In Stock: 1392AC1226 Datasheet

Current PartRFQ

LTK001CN8#PBF

Analog Devices Inc.In Stock: 2294LTK001CN8#PBF Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AC1226 are identified based on the following critical parameters that determine functional equivalence:

• Package Type: 8-DIP (0.300", 7.62mm) — ensures mechanical and electrical compatibility with existing PCB layouts
• Functional Classification: Thermocouple Conditioner — maintains signal conditioning capability
• Input/Output Configuration: Voltage input with thermocouple output — preserves signal chain compatibility
• Mounting Technology: Through Hole — compatible with legacy board designs
• Operating Temperature Range: 0°C ~ 70°C — maintains thermal operating envelope
• Manufacturer: Analog Devices Inc. — ensures design continuity and documentation consistency

The LTK001CN8#PBF qualifies as a substitute based on matching all critical parameters within the allowed electrical and mechanical specifications for this product category.

Parameter Comparison

Engineering Selection Recommendations

Both the AC1226 and LTK001CN8#PBF are classified as obsolete products from Analog Devices Inc. Selection between these parts should be based on the following criteria:

AC1226: Appropriate for applications where the 80 µA supply current specification is a design requirement. Inventory availability is 1306 pieces.

LTK001CN8#PBF: Suitable for applications tolerant of higher supply current (800 µA). This part carries RoHS3 compliance and REACH unaffected status, providing additional regulatory documentation. Inventory availability is 2200 pieces. The LTK001CN8#PBF is supplied in tube packaging.

Both parts maintain identical operating temperature ranges, package configurations, and functional classifications, ensuring direct substitution capability within the specified electrical and mechanical parameters.

Frequently Asked Questions (FAQ)

Q: Can the LTK001CN8#PBF directly replace the AC1226 in existing designs?

A: Yes, the LTK001CN8#PBF is mechanically and functionally compatible with the AC1226. Both components use the 8-DIP package, operate across the same temperature range, and perform identical thermocouple conditioning functions. The primary difference is supply current specification (800 µA versus 80 µA).

Q: What is the significance of the supply current difference between these parts?

A: The AC1226 operates at 80 µA supply current, while the LTK001CN8#PBF operates at 800 µA. This tenfold difference affects power consumption calculations and thermal design considerations. Applications with strict power budgets should account for this parameter when selecting between the two parts.

Q: Are there packaging differences between AC1226 and LTK001CN8#PBF?

A: Both parts use the 8-DIP (0.300", 7.62mm) package with through-hole mounting. The LTK001CN8#PBF is supplied in tube packaging, while the AC1226 packaging specification was not provided. The electrical and mechanical footprints are identical.

Q: What compliance certifications apply to these parts?

A: The LTK001CN8#PBF carries RoHS3 compliance and REACH unaffected status. Both parts are classified as Moisture Sensitivity Level 1 (Unlimited). Both carry ECCN EAR99 and HTSUS 8542.39.0001 classifications.

Q: Why are both parts classified as obsolete?

A: Both the AC1226 and LTK001CN8#PBF are obsolete products. Obsolete status indicates that the manufacturer has discontinued production. Substitute identification is necessary for maintenance of existing systems and legacy design support.