CS3014-FS Equivalent & Substitute Parts Reference

Part Overview

The CS3014-FS is a general purpose operational amplifier manufactured by Cirrus Logic Inc., configured as a dual-channel (2 circuit) rail-to-rail amplifier in an 8-SOIC surface mount package. This device is classified as obsolete, making equivalent substitute parts necessary for new designs and production continuity. The CS3014-FS operates across a 2.7V to 5V supply range with a slew rate of 0.25V/µs and is suitable for general purpose amplification applications requiring low input offset voltage and minimal input bias current.

Substiute Parts

CS3014-FS

Cirrus Logic Inc.In Stock: 760CS3014-FS Datasheet

Current PartRFQ

OPA2314AQDRQ1

Texas InstrumentsIn Stock: 35252OPA2314AQDRQ1 Datasheet

MFR RecommendedRFQ

OPA2316ID

Texas InstrumentsIn Stock: 2314OPA2316ID Datasheet

MFR RecommendedRFQ

OPA2316IDR

Texas InstrumentsIn Stock: 20763OPA2316IDR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CS3014-FS is determined by the following critical parameters:

Mandatory Compatibility Criteria:

• Dual-channel (2 circuit) configuration
• Rail-to-rail output capability
• 8-SOIC surface mount package (0.154", 3.90mm Width)
• Operating temperature range: -40°C to 125°C
• Supply voltage compatibility within or exceeding 2.7V to 5V range

Electrical Performance Considerations: Substitute parts must maintain functional equivalence in the following areas: slew rate, input bias current, input offset voltage, and supply current. The CS3014-FS operates with a slew rate of 0.25V/µs; substitute parts with higher slew rates provide improved performance margins. Input bias current of 170 pA in the original device is significantly higher than modern CMOS alternatives, which offer superior input characteristics.

Identified Substitutes:

• OPA2314AQDRQ1 (Texas Instruments, Automotive Grade, Active Status)
• OPA2316ID (Texas Instruments, Commercial Grade, Active Status)
• OPA2316IDR (Texas Instruments, Commercial Grade, Active Status)

All substitute parts are manufactured by Texas Instruments, maintain active product status, and are available in the required 8-SOIC package configuration.

Parameter Comparison

Engineering Selection Recommendations

OPA2314AQDRQ1 Selection Criteria: This substitute is recommended for automotive applications requiring AEC-Q100 qualification. The OPA2314AQDRQ1 operates with a minimum supply voltage of 1.8V, extending the lower operating range compared to the CS3014-FS. The slew rate of 1.5V/µs provides moderate performance improvement. Input bias current is reduced to 2 pA, representing a 85-fold improvement over the original device. This part is suitable for designs where automotive-grade qualification and lower power consumption are required.

OPA2316ID and OPA2316IDR Selection Criteria: Both OPA2316 variants are functionally identical and differ only in packaging format (Tube versus Cut Tape & Digi-Reel). These parts deliver superior electrical performance with a slew rate of 6V/µs and input bias current of 5 pA. Both variants achieve ROHS3 compliance, addressing environmental and regulatory requirements. The OPA2316 series is recommended for general purpose applications where active product status, RoHS compliance, and enhanced performance margins are required. OPA2316IDR is preferred for high-volume production due to Digi-Reel packaging compatibility with automated assembly processes.

Product Status Consideration: All three substitute parts maintain active product status with Texas Instruments, ensuring long-term availability and continued manufacturing support. The CS3014-FS obsolete status necessitates migration to one of these active alternatives for new designs and ongoing production.

Frequently Asked Questions (FAQ)

Q: Can the OPA2314AQDRQ1 be used as a direct replacement for the CS3014-FS in non-automotive applications?

A: Yes. The OPA2314AQDRQ1 is functionally compatible with the CS3014-FS in non-automotive applications. The automotive qualification does not restrict use in commercial applications. However, the automotive-grade part may carry a cost premium compared to commercial-grade alternatives such as the OPA2316 series.

Q: What is the difference between OPA2316ID and OPA2316IDR?

A: OPA2316ID is supplied in Tube packaging, while OPA2316IDR is supplied in Cut Tape (CT) & Digi-Reel format. Both parts are electrically identical with identical electrical specifications. The packaging difference affects handling and assembly processes. OPA2316IDR is optimized for automated pick-and-place assembly, while OPA2316ID is suitable for manual handling or lower-volume applications.

Q: Are there any supply voltage compatibility issues when substituting the CS3014-FS?

A: No compatibility issues exist. The CS3014-FS operates from 2.7V to 5V. All substitute parts operate from 1.8V to 5.5V, providing a wider supply voltage range. Designs operating within the original 2.7V to 5V window will function identically with any substitute part.

Q: How does the slew rate difference affect circuit performance?

A: The CS3014-FS has a slew rate of 0.25V/µs. Substitute parts offer 1.5V/µs (OPA2314AQDRQ1) or 6V/µs (OPA2316 series). Higher slew rates enable faster signal transitions and improved performance in high-frequency applications. For low-frequency or DC applications, slew rate differences are not functionally significant.

Q: What is the impact of input bias current reduction in substitute parts?

A: The CS3014-FS has an input bias current of 170 pA. Substitute parts reduce this to 2 pA (OPA2314AQDRQ1) or 5 pA (OPA2316 series). Lower input bias current reduces errors in high-impedance signal conditioning circuits and improves accuracy in precision measurement applications. For standard applications, this improvement provides additional performance margin.

Q: Are the substitute parts pin-compatible with the CS3014-FS?

A: Yes. All substitute parts use the 8-SOIC package with identical pinout configuration. Direct PCB substitution is possible without layout modifications.

Q: What is the significance of RoHS3 compliance in the OPA2316 variants?

A: ROHS3 compliance indicates conformance to the Restriction of Hazardous Substances Directive, restricting lead and other hazardous materials. This is required for products sold in the European Union and many other markets. The CS3014-FS is RoHS non-compliant, making RoHS3-compliant substitutes necessary for regulatory compliance in restricted markets.