MAX4166EPA+ Equivalent & Substitute Parts Reference

Part Overview

The MAX4166EPA+ is a general-purpose operational amplifier manufactured by Analog Devices Inc./Maxim Integrated, designed for rail-to-rail applications in 8-PDIP through-hole packaging. This device features a single amplifier circuit with a 5 MHz gain bandwidth product and 2 V/µs slew rate, suitable for low-power signal conditioning and general analog applications.

The MAX4166EPA+ is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support legacy system maintenance or redesign initiatives.

Substiute Parts

MAX4166EPA+

Analog Devices Inc./Maxim IntegratedIn Stock: 723MAX4166EPA+ Datasheet

Current PartRFQ

MCP6281-E/P

Microchip TechnologyIn Stock: 2069MCP6281-E/P Datasheet

MFR RecommendedRFQ

TLV2460AIP

Texas InstrumentsIn Stock: 2150TLV2460AIP Datasheet

MFR RecommendedRFQ

TLV2460CP

Texas InstrumentsIn Stock: 2177TLV2460CP Datasheet

MFR RecommendedRFQ

TLV2460IP

Texas InstrumentsIn Stock: 1120TLV2460IP Datasheet

MFR RecommendedRFQ

TLV2770AIP

Texas InstrumentsIn Stock: 1034TLV2770AIP Datasheet

MFR RecommendedRFQ

TLV2770CP

Texas InstrumentsIn Stock: 2155TLV2770CP Datasheet

MFR RecommendedRFQ

TLV2770IP

Texas InstrumentsIn Stock: 785TLV2770IP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MAX4166EPA+ are selected based on strict compatibility criteria derived from the allowed electrical and mechanical parameters. The following key parameters determine substitution eligibility:

Primary Compatibility Criteria:

• Package / Case: 8-DIP (0.300", 7.62mm) with Through Hole mounting
• Amplifier Type: General Purpose
• Number of Circuits: 1
• Output Type: Rail-to-Rail
• Voltage - Supply Span (Min): 2.7 V or lower
• Voltage - Supply Span (Max): 6.5 V or higher
• Operating Temperature: Must support -40°C minimum for industrial applications

Secondary Compatibility Criteria:

• Gain Bandwidth Product: 5 MHz or higher
• Slew Rate: 2 V/µs or higher
• Current - Output / Channel: 125 mA or higher
• RoHS3 Compliance

The identified substitute parts meet these criteria while maintaining functional equivalence for general-purpose amplifier applications. Substitutes are grouped by their product status and thermal operating range to facilitate selection based on application requirements.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: MCP6281-E/P

The MCP6281-E/P from Microchip Technology is the preferred substitute for the MAX4166EPA+. This device maintains full compatibility with the 8-DIP through-hole package and general-purpose amplifier classification. The MCP6281-E/P offers an active product status, ensuring long-term availability and supply chain stability. It provides superior electrical characteristics including lower input bias current (1 pA vs. 50 nA), improved slew rate (2.5 V/µs vs. 2 V/µs), and extended operating temperature range (-40°C ~ 125°C vs. -40°C ~ 85°C). The device is ROHS3 compliant and maintains rail-to-rail output capability. Current inventory of 1960 pieces supports immediate deployment.

Secondary Recommendations: TLV2460 Series (Texas Instruments)

The TLV2460AIP and TLV2460IP variants provide substitution options with extended temperature ranges (-40°C ~ 125°C). These devices deliver higher gain bandwidth product (6.4 MHz vs. 5 MHz) and maintain the 8-DIP package format. The TLV2460CP variant operates within a commercial temperature range (0°C ~ 70°C) and is suitable for non-industrial applications. All TLV2460 variants are ROHS3 compliant with Last Time Buy status, indicating controlled availability windows.

Tertiary Recommendations: TLV2770 Series (Texas Instruments)

The TLV2770AIP and TLV2770IP variants offer significantly enhanced slew rate performance (10.5 V/µs vs. 2 V/µs), making them suitable for applications requiring faster transient response. These devices maintain 8-DIP through-hole packaging and rail-to-rail output characteristics. The TLV2770CP operates within commercial temperature range (0°C ~ 70°C). All TLV2770 variants are ROHS3 compliant with Last Time Buy status. Note that maximum supply voltage is reduced to 5.5 V, requiring verification against application requirements.

Supply Voltage Consideration:

The MCP6281-E/P supports the full supply voltage range of the original device (2.2 V ~ 6 V). The TLV2460 series supports 2.7 V ~ 6 V, matching the original specification. The TLV2770 series operates at 2.5 V ~ 5.5 V, which may require design verification for applications requiring supply voltages above 5.5 V.

Output Current Consideration:

The MAX4166EPA+ provides 125 mA output current per channel. The MCP6281-E/P delivers 25 mA, the TLV2460 series delivers 80 mA, and the TLV2770 series delivers 50 mA. Applications requiring the full 125 mA output current must be redesigned or supplemented with external output stages.

Frequently Asked Questions (FAQ)

Q1: Can the MCP6281-E/P directly replace the MAX4166EPA+ in existing PCB designs?

A: Yes, the MCP6281-E/P is pin-compatible with the MAX4166EPA+ in 8-DIP through-hole packaging. However, verify that the application does not require output currents exceeding 25 mA, as the MCP6281-E/P is rated for 25 mA maximum output current compared to the original 125 mA specification.

Q2: What is the difference between TLV2460AIP, TLV2460CP, and TLV2460IP?

A: These variants differ in operating temperature range. The TLV2460AIP and TLV2460IP support industrial temperature range (-40°C ~ 125°C), while the TLV2460CP is rated for commercial temperature range (0°C ~ 70°C). All three variants are electrically identical and use the same 8-DIP package. Select based on application temperature requirements.

Q3: Why do the TLV2770 variants have a lower maximum supply voltage (5.5 V) compared to the original MAX4166EPA+ (6.5 V)?

A: The TLV2770 series is designed with a maximum supply voltage specification of 5.5 V. Applications requiring operation above 5.5 V must use alternative substitutes such as the MCP6281-E/P or TLV2460 series, which support higher supply voltages.

Q4: Which substitute part has the lowest input bias current?

A: The MCP6281-E/P has the lowest input bias current at 1 pA, compared to the original MAX4166EPA+ at 50 nA. The TLV2770 series provides 2 pA input bias current. Lower input bias current reduces errors in high-impedance signal conditioning applications.

Q5: Are all substitute parts ROHS3 compliant?

A: Yes, all identified substitute parts (MCP6281-E/P, TLV2460 series, and TLV2770 series) are ROHS3 compliant, meeting environmental and regulatory requirements equivalent to the original MAX4166EPA+.

Q6: What is the significance of "Last Time Buy" product status for the TLV2460 and TLV2770 series?

A: Last Time Buy status indicates that the manufacturer has announced end-of-life for these products. Customers may place final orders within a specified window before production ceases. For long-term supply chain planning, the MCP6281-E/P with Active status is recommended as it will remain available indefinitely.

Q7: Can I use the TLV2770 series in applications requiring 125 mA output current?

A: No, the TLV2770 series is rated for 50 mA maximum output current per channel. Applications requiring 125 mA output current must either use the MCP6281-E/P (25 mA) with external output buffering or redesign the circuit to reduce output current requirements.

Q8: What is the package compatibility for all substitute parts?

A: All substitute parts use 8-DIP (0.300", 7.62mm) through-hole packaging, identical to the MAX4166EPA+. This ensures mechanical and electrical compatibility with existing PCB designs without layout modifications.