MAX4474EUA-T Equivalent & Substitute Parts

Part Overview

The MAX4474EUA-T is a general purpose operational amplifier manufactured by Analog Devices Inc./Maxim Integrated, configured as a dual-channel (2 circuit) rail-to-rail output device in an 8-uMAX/uSOP surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The MAX4474EUA-T operates across a 1.8 V to 5.5 V supply range with low power consumption and is suitable for battery-powered and low-voltage applications requiring dual amplifier functionality.

Key Parameters

Parameter	Value	Unit
Manufacturer Part Number	MAX4474EUA-T	—
Manufacturer	Analog Devices Inc./Maxim Integrated	—
Amplifier Type	General Purpose	—
Number of Circuits	2	—
Output Type	Rail-to-Rail	—
Slew Rate	0.02	V/µs
Gain Bandwidth Product	40	kHz
Current - Input Bias	200	pA
Voltage - Input Offset	500	µV
Current - Supply	750	nA (x2 Channels)
Current - Output / Channel	36	mA
Voltage - Supply Span (Min)	1.8	V
Voltage - Supply Span (Max)	5.5	V
Operating Temperature	-40 to 85	°C
Mounting Type	Surface Mount	—
Package / Case	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	—
Product Status	Obsolete	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the MAX4474EUA-T is determined by the following critical parameters that must be matched or exceeded:

Mandatory Compatibility Criteria:

Number of Circuits: 2 (dual-channel configuration)
Output Type: Rail-to-Rail
Mounting Type: Surface Mount
Package / Case: 8-TSSOP or 8-MSOP (0.118", 3.00mm Width)
Voltage - Supply Span: Minimum 1.8 V, Maximum ≥ 5.5 V
Operating Temperature: Minimum -40°C, Maximum ≥ 85°C

Performance Parameters (Functional Equivalence):

Slew Rate: ≥ 0.02 V/µs
Gain Bandwidth Product: ≥ 40 kHz
Current - Output / Channel: ≥ 36 mA
Current - Supply: ≤ 750 nA per channel (preferred for low-power applications)

Substitute parts are grouped into two categories based on amplifier architecture and performance characteristics:

Category 1: CMOS Architecture (Ultra-Low Input Bias Current)

ADA4505-2ARMZ and ADA4505-2ARMZ-RL
LPV542DGKR These parts feature input bias currents in the picoampere range, suitable for high-impedance input applications.

Category 2: General Purpose Architecture (Bipolar/JFET Input)

LMP2232AMM/NOPB and LMP2232BMM/NOPB
LMP7716MM/NOPB, LMP7716MME/NOPB, and LMP7716MMX/NOPB
LMV797MM/NOPB and LMV797MMX/NOPB These parts maintain general purpose amplifier characteristics with varying performance levels.

Parameter Comparison

Parameter	MAX4474EUA-T	ADA4505-2ARMZ	LMP2232BMM/NOPB	LMP7716MMX/NOPB	LMV797MMX/NOPB	LPV542DGKR
Manufacturer	Analog Devices	Analog Devices	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Amplifier Type	General Purpose	CMOS	General Purpose	General Purpose	General Purpose	CMOS
Number of Circuits	2	2	2	2	2	2
Output Type	Rail-to-Rail	Rail-to-Rail	Differential, Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail
Slew Rate (V/µs)	0.02	0.006	0.058	11.5	11.5	0.0037
Gain Bandwidth Product (kHz)	40	50	130	17000	17000	8
Current - Input Bias (pA)	200	0.5	0.02	0.1	0.1	0.1
Voltage - Input Offset (µV)	500	500	10	10	100	1000
Current - Supply (nA, x2 Channels)	750	7000	19000	1300000	1300000	480
Current - Output / Channel (mA)	36	40	30	66	60	36
Voltage - Supply Span (Min - Max)	1.8 - 5.5 V	1.8 - 5.0 V	1.6 - 5.5 V	1.8 - 5.5 V	1.8 - 5.5 V	1.6 - 5.5 V
Operating Temperature	-40 to 85°C	-40 to 125°C	-40 to 125°C	-40 to 125°C	-40 to 125°C	-40 to 125°C
Package / Case	8-TSSOP, 8-MSOP	8-TSSOP, 8-MSOP	8-TSSOP, 8-MSOP	8-TSSOP, 8-MSOP	8-TSSOP, 8-MSOP	8-TSSOP, 8-MSOP
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitute: ADA4505-2ARMZ / ADA4505-2ARMZ-RL

The ADA4505-2ARMZ series is the manufacturer-recommended primary substitute. Both packaging variants (Tube and Cut Tape & Digi-Reel) maintain identical electrical specifications. This CMOS amplifier provides superior input bias current performance (0.5 pA versus 200 pA) while maintaining compatible supply voltage range (1.8 V to 5.0 V). The maximum operating temperature extends to 125°C, exceeding the MAX4474EUA-T specification. Current inventory levels are substantial (5,035 and 9,301 units respectively), ensuring supply continuity. Both variants are ROHS3 compliant and carry REACH Unaffected status.

Secondary Substitute: LPV542DGKR

The LPV542DGKR offers the lowest supply current consumption (480 nA per dual channel) among all substitutes, making it optimal for ultra-low-power battery applications. This CMOS device maintains rail-to-rail output capability and compatible package dimensions. Supply voltage range extends to 5.5 V maximum. Inventory availability is adequate at 9,245 units. This part is suitable when power consumption is the primary design constraint.

Performance-Enhanced Substitutes: LMP7716 Series and LMV797 Series

The LMP7716MM/NOPB, LMP7716MME/NOPB, LMP7716MMX/NOPB, LMV797MM/NOPB, and LMV797MMX/NOPB devices provide significantly higher slew rate (11.5 V/µs) and gain bandwidth product (17 MHz) compared to the MAX4474EUA-T (0.02 V/µs, 40 kHz). These general purpose amplifiers are suitable for applications requiring higher frequency response and faster signal settling. All variants are active products with extended temperature range (-40°C to 125°C) and ROHS3 compliance. Inventory levels are robust across all variants (1,900 to 35,200 units).

Precision Substitute: LMP2232BMM/NOPB

The LMP2232BMM/NOPB provides superior input offset voltage (10 µV versus 500 µV) and extremely low input bias current (0.02 pA), making it suitable for precision measurement and instrumentation applications. This general purpose amplifier features differential output capability and operates across 1.6 V to 5.5 V supply range. Inventory is available at 1,700 units. Extended operating temperature to 125°C supports demanding environmental conditions.

All substitute parts maintain:

Dual-channel (2 circuit) configuration
Rail-to-rail output capability
Surface mount 8-TSSOP/8-MSOP package compatibility
ROHS3 compliance and MSL 1 rating
Active product status (ensuring long-term availability)

Frequently Asked Questions (FAQ)

Q1: Can I directly replace MAX4474EUA-T with ADA4505-2ARMZ without circuit modifications?

A: Yes, direct replacement is possible for most applications. Both devices share identical package dimensions (8-TSSOP/8-MSOP), dual-channel configuration, and rail-to-rail output. Supply voltage range compatibility is maintained (1.8 V to 5.0 V for ADA4505-2ARMZ covers the MAX4474EUA-T operating range). However, verify that your circuit does not depend on the specific input bias current value of 200 pA, as the ADA4505-2ARMZ operates at 0.5 pA. For high-impedance input circuits, this improvement eliminates potential bias current errors.

Q2: What is the difference between ADA4505-2ARMZ and ADA4505-2ARMZ-RL?

A: Both parts are electrically identical with matching specifications. The difference is packaging format: ADA4505-2ARMZ is supplied in Tube packaging, while ADA4505-2ARMZ-RL is supplied in Cut Tape & Digi-Reel format. Select based on your procurement and assembly process requirements. The Digi-Reel variant (RL) offers higher inventory availability (9,301 units versus 5,035 units).

Q3: Why do LMP7716 and LMV797 series have much higher gain bandwidth products than the MAX4474EUA-T?

A: The LMP7716 and LMV797 series are designed for higher-frequency applications with 17 MHz gain bandwidth product compared to the MAX4474EUA-T's 40 kHz specification. These devices feature significantly higher slew rate (11.5 V/µs versus 0.02 V/µs). Use these substitutes only if your application requires faster signal settling and higher frequency response. For low-frequency, low-power applications, the ADA4505-2ARMZ or LPV542DGKR are more appropriate choices.

Q4: Is the LPV542DGKR suitable for my application if I need 36 mA output current?

A: Yes. The LPV542DGKR provides 36 mA output current per channel, matching the MAX4474EUA-T specification exactly. However, note that the LPV542DGKR has the lowest gain bandwidth product (8 kHz) among all substitutes. This device is optimized for ultra-low-power applications where bandwidth requirements are minimal. Verify that your circuit can operate with 8 kHz bandwidth before selecting this substitute.

Q5: Can I use LMP2232BMM/NOPB in place of MAX4474EUA-T?

A: Yes, with consideration of output type differences. The LMP2232BMM/NOPB is a general purpose amplifier with differential, rail-to-rail output (versus simple rail-to-rail for MAX4474EUA-T). It provides superior precision with 10 µV input offset voltage and 0.02 pA input bias current. The higher gain bandwidth product (130 kHz) and slew rate (0.058 V/µs) support faster applications. Supply voltage range (1.6 V to 5.5 V) exceeds MAX4474EUA-T requirements. This substitute is ideal for precision measurement circuits.

Q6: What is the temperature operating range difference, and does it matter?

A: The MAX4474EUA-T operates from -40°C to 85°C, while all active substitutes extend to -40°C to 125°C. If your application operates only within -40°C to 85°C, this difference is not critical. However, if your design may encounter temperatures above 85°C, the extended range of substitute parts provides additional margin and reliability. All substitutes maintain ROHS3 compliance across their full operating temperature ranges.

Q7: Are all substitute parts available in the same package dimensions?

A: Yes. All substitute parts are available in 8-TSSOP or 8-MSOP packages with 0.118" width and 3.00mm body width, matching the MAX4474EUA-T package footprint. PCB layout and component placement remain unchanged. Verify specific package variant availability with your supplier, as some parts may be offered in 8-VSSOP variant designation, which maintains identical physical dimensions.

Q8: Which substitute should I choose for battery-powered applications?

A: For battery-powered applications prioritizing power consumption, select the LPV542DGKR (480 nA supply current per dual channel) or ADA4505-2ARMZ (7 µA supply current per dual channel). The LPV542DGKR offers the lowest power consumption but with limited bandwidth (8 kHz). The ADA4505-2ARMZ provides a balance between low power consumption and adequate bandwidth (50 kHz) for most battery-powered signal conditioning applications.

Q9: What compliance certifications do all substitute parts carry?

A: All substitute parts are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating. The ADA4505-2ARMZ series additionally carries REACH Unaffected status. All parts are classified under ECCN EAR99 and HTSUS 8542.33.0001. These certifications ensure regulatory compliance for commercial and industrial applications.

Q10: If MAX4474EUA-T is obsolete, how long will substitute parts remain available?

A: All recommended substitute parts carry Active product status, indicating manufacturer commitment to ongoing production and support. Texas Instruments LMP and LMV series have established long-term product lifecycles. Analog Devices ADA4505 series is actively manufactured. Inventory levels across all substitutes are substantial (1,700 to 35,200 units), supporting medium to long-term design requirements. Verify long-term availability with your component supplier for production quantities exceeding 12-month requirements.

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