LT1805CS Equivalent & Substitute Parts

Part Overview

The LT1805CS is a general-purpose operational amplifier manufactured by Analog Devices Inc., featuring four independent circuits in a 14-SOIC surface mount package. This rail-to-rail output amplifier is designed for applications requiring moderate bandwidth and low power consumption across a wide supply voltage range. The device is actively produced and fully compliant with RoHS3 and REACH regulations, making it suitable for current production designs. Equivalent and substitute parts are identified for applications where packaging format, inventory availability, or specific performance parameters necessitate alternative component selection while maintaining functional compatibility.

Substiute Parts

LT1805CS

Analog Devices Inc.In Stock: 1113LT1805CS Datasheet

Current PartRFQ

LT1805CS#PBF

Analog Devices Inc.In Stock: 1342LT1805CS#PBF Datasheet

DirectRFQ

TLV2244ID

Texas InstrumentsIn Stock: 786TLV2244ID Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LT1805CS are classified into two categories based on substitution criteria:

Direct Packaging Equivalent: LT1805CS#PBF represents an identical electrical specification to the main part number, differing only in packaging format (Tube packaging versus standard packaging). This part maintains all electrical parameters, circuit count, and performance characteristics, making it a direct functional equivalent suitable for applications where tube packaging is preferred or required for automated assembly processes.

Similar Functional Alternative: TLV2244ID from Texas Instruments provides equivalent circuit count (4 channels) and package form factor (14-SOIC) with rail-to-rail output capability. However, this part exhibits significantly different electrical performance characteristics, including substantially lower slew rate, reduced gain bandwidth product, lower input bias current, and reduced output current per channel. Selection of this alternative requires verification that the application's performance requirements align with the TLV2244ID specifications rather than the LT1805CS baseline.

Substitution logic is based on the following critical parameters: number of circuits (4 channels), output type (rail-to-rail), package form factor (14-SOIC), mounting type (surface mount), and compliance certifications (RoHS3, REACH).

Parameter Comparison

Engineering Selection Recommendations

LT1805CS#PBF is the preferred direct substitute for the LT1805CS. Both parts are manufactured by Analog Devices Inc., maintain identical electrical specifications across all performance parameters, and are both actively produced with full RoHS3 and REACH compliance. The only distinction is packaging format (Tube versus standard packaging). Selection between these two part numbers is determined by assembly process requirements and inventory management practices rather than electrical performance considerations.

TLV2244ID is a functional alternative suitable only for applications where the significantly reduced performance specifications are acceptable. This Texas Instruments device provides equivalent circuit count and package form factor but operates at substantially lower bandwidth, slew rate, and output current levels. The TLV2244ID exhibits lower input bias current and reduced input offset voltage, which may be advantageous in specific low-power or precision applications. However, the extended operating temperature range (-40°C to 125°C) of the TLV2244ID exceeds the LT1805CS specification (0°C to 70°C), providing broader environmental capability. All three parts maintain RoHS3 compliance and active production status.

Frequently Asked Questions (FAQ)

Q: Can LT1805CS#PBF be used as a direct replacement for LT1805CS?

A: Yes. LT1805CS#PBF is electrically identical to LT1805CS across all specified parameters. The difference is packaging format only. LT1805CS#PBF is supplied in Tube packaging, while LT1805CS uses standard packaging. Both are manufactured by Analog Devices Inc. and are suitable for identical applications.

Q: What are the key differences between LT1805CS and TLV2244ID?

A: Both devices provide four independent rail-to-rail amplifier circuits in 14-SOIC packages. However, TLV2244ID operates at significantly lower bandwidth (5.5 kHz versus 83 MHz), lower slew rate (0.002 V/µs versus 100 V/µs), and lower output current per channel (200 µA versus 50 mA). TLV2244ID is suitable for low-frequency, low-power applications, while LT1805CS is designed for higher-speed signal processing. TLV2244ID offers extended operating temperature range (-40°C to 125°C) compared to LT1805CS (0°C to 70°C).

Q: Are all three parts RoHS3 compliant?

A: Yes. LT1805CS, LT1805CS#PBF, and TLV2244ID are all RoHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for production designs.

Q: What is the significance of the 14-SOIC package specification?

A: The 14-SOIC (Small Outline Integrated Circuit) package is a surface mount form factor with 0.154-inch (3.90mm) width. All three parts use this identical package, ensuring mechanical and electrical compatibility on printed circuit boards. This package type is standard for quad operational amplifier configurations and is compatible with automated assembly equipment.

Q: Can TLV2244ID replace LT1805CS in high-speed applications?

A: No. TLV2244ID is not suitable for high-speed applications. The gain bandwidth product of TLV2244ID (5.5 kHz) is approximately 15,000 times lower than LT1805CS (83 MHz). Applications requiring fast signal processing, high slew rate, or significant output current must use LT1805CS or LT1805CS#PBF.

Q: What inventory levels are available for each part?

A: LT1805CS has 1,026 pieces in stock. LT1805CS#PBF has 1,312 pieces in stock. TLV2244ID has 752 pieces in stock. All parts are listed as new original stock.