MAX4470EXK-T Equivalent & Substitute Parts

Part Overview

The MAX4470EXK-T is a general-purpose operational amplifier manufactured by Analog Devices Inc./Maxim Integrated, featuring rail-to-rail output capability in a compact 5-TSSOP (SC-70-5) surface mount package. This device is classified as obsolete, necessitating identification of active equivalent and substitute components for new designs and production continuity. The MAX4470EXK-T operates across a 1.8 V to 5.5 V supply range with ultra-low quiescent current consumption, making it suitable for battery-powered and low-power applications.

Substiute Parts

MAX4470EXK-T

Analog Devices Inc./Maxim IntegratedIn Stock: 901MAX4470EXK-T Datasheet

Current PartRFQ

MAX4470EXK+T

Analog Devices Inc./Maxim IntegratedIn Stock: 12918MAX4470EXK+T Datasheet

DirectRFQ

MCP6441T-E/LT

Microchip TechnologyIn Stock: 16484MCP6441T-E/LT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX4470EXK-T is determined by strict equivalence across the following critical parameters:

Package Compatibility: All substitute parts must use the 5-TSSOP (SC-70-5, SOT-353) surface mount package to ensure mechanical and electrical compatibility with existing PCB layouts.

Functional Classification: All parts must be single-circuit, general-purpose operational amplifiers with rail-to-rail output capability.

Electrical Operating Range: Supply voltage span must encompass or exceed the original 1.8 V to 5.5 V range. Operating temperature range must support the -40°C to 85°C minimum specification.

Performance Characteristics: Gain bandwidth product of 9 kHz is the defining performance metric. Slew rate, input bias current, input offset voltage, quiescent current, and output current must remain within acceptable tolerances for the application class.

Compliance Requirements: All substitute parts must maintain ROHS3 compliance and MSL 1 rating for manufacturing compatibility.

Two substitute parts meet these criteria: MAX4470EXK+T (direct Analog Devices equivalent with active product status) and MCP6441T-E/LT (Microchip Technology alternative with enhanced specifications).

Parameter Comparison

Engineering Selection Recommendations

MAX4470EXK+T (Direct Substitute): This part is the primary equivalent for MAX4470EXK-T replacement. It is manufactured by the same company (Analog Devices Inc./Maxim Integrated) and maintains identical electrical specifications, including slew rate, gain bandwidth product, input bias current, input offset voltage, quiescent current, and output current. The MAX4470EXK+T carries active product status, ensuring long-term availability and supply chain continuity. The only difference is packaging format (Tape & Reel versus individual packaging), which does not affect electrical performance. This part is recommended for direct substitution in existing designs without circuit modification.

MCP6441T-E/LT (Cross-Manufacturer Alternative): The Microchip Technology MCP6441T-E/LT provides functional equivalence with enhanced specifications in several areas. It maintains the same 9 kHz gain bandwidth product and 5-TSSOP package footprint. The MCP6441T-E/LT offers superior input bias current (1 pA versus 200 pA), lower quiescent current (450 nA versus 750 nA), and extended operating temperature range (-40°C to 125°C versus -40°C to 85°C). However, the MCP6441T-E/LT exhibits higher input offset voltage (4.5 mV versus 500 µV) and slightly higher slew rate (0.003 V/µs versus 0.002 V/µs). The MCP6441T-E/LT is suitable for applications where lower input bias current and extended temperature operation are beneficial, provided that the higher input offset voltage does not compromise circuit performance. Both substitute parts maintain ROHS3 compliance and MSL 1 rating.

Frequently Asked Questions (FAQ)

Q: Can MAX4470EXK+T be used as a direct replacement for MAX4470EXK-T?

A: Yes. The MAX4470EXK+T is electrically identical to the MAX4470EXK-T across all specified parameters. The difference is packaging format (Tape & Reel versus individual packaging). No circuit modifications are required. The MAX4470EXK+T has active product status, ensuring continued availability.

Q: What are the key differences between MAX4470EXK+T and MCP6441T-E/LT?

A: Both parts share identical package (5-TSSOP SC-70-5), gain bandwidth product (9 kHz), and output current (36 mA). The MCP6441T-E/LT offers lower input bias current (1 pA versus 200 pA), lower quiescent current (450 nA versus 750 nA), and extended temperature range (-40°C to 125°C). The MCP6441T-E/LT has higher input offset voltage (4.5 mV versus 500 µV) and slightly higher slew rate (0.003 V/µs versus 0.002 V/µs). Selection depends on application requirements for offset voltage tolerance and temperature range.

Q: Are both substitute parts compatible with existing PCB layouts designed for MAX4470EXK-T?

A: Yes. Both MAX4470EXK+T and MCP6441T-E/LT use the identical 5-TSSOP (SC-70-5, SOT-353) package, ensuring mechanical and electrical pin compatibility with existing PCB designs. No layout modifications are necessary.

Q: Do the substitute parts maintain the same compliance certifications?

A: Yes. Both MAX4470EXK+T and MCP6441T-E/LT are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the original MAX4470EXK-T specifications.

Q: Which substitute part should be selected for low-power battery applications?

A: The MCP6441T-E/LT is preferred for ultra-low-power applications due to its lower quiescent current (450 nA versus 750 nA) and significantly lower input bias current (1 pA versus 200 pA). These characteristics reduce overall circuit power consumption.

Q: Can MCP6441T-E/LT be used in applications requiring high input offset voltage precision?

A: The MCP6441T-E/LT exhibits higher input offset voltage (4.5 mV) compared to the original MAX4470EXK-T (500 µV). Applications requiring tight offset voltage control should use MAX4470EXK+T or implement additional offset trimming circuitry with MCP6441T-E/LT.

Q: What is the supply voltage compatibility range for each substitute?

A: MAX4470EXK+T operates across 1.8 V to 5.5 V, identical to the original. MCP6441T-E/LT operates across 1.4 V to 6.0 V, providing wider supply range compatibility. Both parts support the original 1.8 V to 5.5 V operating window.