ISL28246FUZ Equivalent & Substitute Parts

Part Overview

The ISL28246FUZ is a general purpose operational amplifier manufactured by Renesas Electronics Corporation, configured as a dual-circuit (2-channel) rail-to-rail output device in an 8-MSOP surface mount package. This component is classified as obsolete, indicating that direct procurement from the original manufacturer is no longer available through standard distribution channels. Identifying equivalent and substitute parts is necessary to maintain design continuity, support production requirements, and ensure long-term component availability for applications currently utilizing this amplifier.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	2	—
Output Type	Rail-to-Rail	—
Slew Rate	1.9	V/µs
Gain Bandwidth Product	5	MHz
-3dB Bandwidth	13	MHz
Current - Input Bias	16	nA
Voltage - Input Offset	30	µV
Current - Supply (per Channel)	1	mA
Current - Output per Channel	56	mA
Voltage - Supply Span (Min)	2.4	V
Voltage - Supply Span (Max)	5.5	V
Operating Temperature Range	-40 to 125	°C
Mounting Type	Surface Mount	—
Package / Case	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	2 (1 Year)	—

Substitute Part Grouping Explanation

Substitution of the ISL28246FUZ is determined by the following critical parameters:

Primary Substitution Criteria:

Dual-circuit (2-channel) configuration
Rail-to-rail output capability
Surface mount packaging (8-MSOP or compatible 8-pin variants)
Supply voltage range compatibility (minimum 2.4 V to maximum 5.5 V)
Operating temperature range (-40°C to 125°C or wider)
General purpose amplifier classification

Secondary Compatibility Factors:

Slew rate (1.9 V/µs baseline; higher values acceptable)
Gain bandwidth product (5 MHz baseline; higher values acceptable)
Input bias current (16 nA baseline; lower values acceptable)
Input offset voltage (30 µV baseline; lower values acceptable)
Output current capability (56 mA per channel baseline; higher values acceptable)
Supply current consumption (1 mA per channel baseline; lower values preferred)

Substitute parts must satisfy the primary criteria. Secondary parameters may vary within acceptable application tolerances, provided the substitute does not introduce functional degradation in the target circuit.

Parameter Comparison

Parameter	ISL28246FUZ	BU7266FVM-TR	BU7266SFVM-TR	BU7486FVM-TR	LMV772QMM/NOPB	LMV852MME/NOPB	LPV542DGKR	LPV542DGKT	NCS20032DMR2G	NCV20032DMR2G	OPA2348AIDGK
Manufacturer	Renesas	Rohm	Rohm	Rohm	TI	TI	TI	TI	onsemi	onsemi	TI
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
Amplifier Type	General Purpose	CMOS	CMOS	CMOS	General Purpose	CMOS	CMOS	CMOS	General Purpose	General Purpose	CMOS
Number of Circuits	2	2	2	2	2	2	2	2	2	2	2
Output Type	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Differential, Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail
Slew Rate (V/µs)	1.9	0.0024	0.0024	10	1.4	4.5	0.0037	0.0037	8	8	0.5
Gain Bandwidth Product (MHz)	5	0.004	0.004	10	3.5	8	0.008	0.008	7	7	1
Current - Input Bias (pA/nA)	16 nA	1 pA	1 pA	1 pA	0.23 pA	0.1 pA	0.1 pA	0.1 pA	1 pA	1 pA	0.5 pA
Voltage - Input Offset (µV)	30	1000	1000	1000	250	260	1000	1000	500	500	1000
Current - Supply per Channel (µA/mA)	1 mA	0.7 µA	0.7 µA	6 mA	600 µA	820 µA	0.48 µA	0.48 µA	275 µA	275 µA	45 µA
Current - Output per Channel (mA)	56	4	4	12	75	65	36	36	96	14	10
Voltage - Supply Span Min (V)	2.4	1.8	1.8	3	2.7	2.7	1.6	1.6	1.7	1.7	2.1
Voltage - Supply Span Max (V)	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5
Operating Temperature (°C)	-40 to 125	-40 to 85	-40 to 105	-40 to 105	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	8-TSSOP, 8-MSOP (0.118", 3.00mm)	8-VSSOP, 8-MSOP (0.110", 2.80mm)	8-VSSOP, 8-MSOP (0.110", 2.80mm)	8-VSSOP, 8-MSOP (0.110", 2.80mm)	8-TSSOP, 8-MSOP (0.118", 3.00mm)	8-TSSOP, 8-MSOP (0.118", 3.00mm)	8-TSSOP, 8-MSOP (0.118", 3.00mm)	8-TSSOP, 8-MSOP (0.118", 3.00mm)	8-TSSOP, 8-MSOP (0.118", 3.00mm)	8-TSSOP, 8-MSOP (0.118", 3.00mm)	8-TSSOP, 8-MSOP (0.118", 3.00mm)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	2 (1 Year)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	2 (1 Year)

Engineering Selection Recommendations

Tier 1 - Direct Functional Equivalents (Recommended Primary Substitutes):

The following parts satisfy all primary substitution criteria and maintain the closest functional alignment to the ISL28246FUZ:

NCV20032DMR2G (onsemi) and NCS20032DMR2G (onsemi) are general purpose dual-channel rail-to-rail amplifiers with active product status. Both devices operate across the full -40°C to 125°C temperature range, matching the original part's thermal specification. The NCV20032DMR2G provides 14 mA output current per channel, while the NCS20032DMR2G delivers 96 mA per channel. Both support the 2.4 V minimum supply voltage requirement and are ROHS3 compliant with unlimited moisture sensitivity rating.

LMV772QMM/NOPB (Texas Instruments) is a general purpose dual-channel amplifier with differential and rail-to-rail output configuration. This part operates across -40°C to 125°C, supports 2.7 V minimum supply voltage, and carries AEC-Q100 automotive qualification. It is ROHS3 compliant with unlimited moisture sensitivity. The 75 mA output current per channel exceeds the original specification.

Tier 2 - Functional Substitutes with Parameter Trade-offs:

BU7486FVM-TR (Rohm Semiconductor) is a CMOS dual-channel rail-to-rail amplifier with active status. This part provides 10 V/µs slew rate and 10 MHz gain bandwidth product, both exceeding the original ISL28246FUZ specifications. However, the minimum supply voltage is 3 V, which is higher than the original 2.4 V specification. Operating temperature range extends to -40°C to 105°C. ROHS3 compliant with unlimited moisture sensitivity.

LMV852MME/NOPB (Texas Instruments) is a CMOS dual-channel rail-to-rail amplifier with 4.5 V/µs slew rate and 8 MHz gain bandwidth product. This part operates across -40°C to 125°C with 2.7 V minimum supply voltage. Output current capability is 65 mA per channel. ROHS3 compliant with unlimited moisture sensitivity.

Tier 3 - Ultra-Low Power Alternatives:

LPV542DGKR and LPV542DGKT (Texas Instruments) are CMOS dual-channel rail-to-rail amplifiers with exceptionally low supply current (480 nA per channel). Both parts operate across -40°C to 125°C with 1.6 V minimum supply voltage. These devices are suitable for battery-powered or ultra-low-power applications where the original ISL28246FUZ's 1 mA per channel supply current is excessive. ROHS3 compliant with unlimited moisture sensitivity.

Tier 4 - Low-Bandwidth Alternatives:

BU7266FVM-TR and BU7266SFVM-TR (Rohm Semiconductor) are CMOS dual-channel rail-to-rail amplifiers with very low slew rate (0.0024 V/µs) and gain bandwidth product (4 kHz). These parts are suitable only for applications with minimal bandwidth requirements. BU7266FVM-TR operates to -40°C to 85°C, while BU7266SFVM-TR extends to -40°C to 105°C. Both are ROHS3 compliant with unlimited moisture sensitivity.

OPA2348AIDGK (Texas Instruments) is a CMOS dual-channel rail-to-rail amplifier with 0.5 V/µs slew rate and 1 MHz gain bandwidth product. This part operates across -40°C to 125°C with 2.1 V minimum supply voltage. Supply current is 45 µA per channel. ROHS3 compliant with MSL 2 (1 Year) rating, matching the original part's moisture sensitivity.

Compliance and Certification Status:

All substitute parts listed are ROHS3 compliant and REACH unaffected, matching the original ISL28246FUZ regulatory status. The LMV772QMM/NOPB carries AEC-Q100 automotive qualification, providing additional assurance for applications requiring automotive-grade components. Most substitute parts feature unlimited moisture sensitivity (MSL 1), providing superior handling and storage characteristics compared to the original part's MSL 2 (1 Year) rating.

Frequently Asked Questions (FAQ)

Q1: Can I directly replace the ISL28246FUZ with any of the listed substitute parts without circuit modification?

A: Direct replacement depends on the specific application requirements. Parts in Tier 1 (NCV20032DMR2G, NCS20032DMR2G, LMV772QMM/NOPB) satisfy all primary electrical and thermal specifications and are pin-compatible in 8-pin surface mount packages. However, circuit validation is necessary to confirm that secondary parameter variations (slew rate, gain bandwidth product, input offset voltage) do not affect system performance. Parts in Tier 2, 3, and 4 introduce parameter trade-offs that may require circuit analysis or redesign.

Q2: What is the significance of the package designation differences (8-MSOP vs. 8-VSSOP)?

A: Both 8-MSOP and 8-VSSOP are 8-pin surface mount packages with identical pinout and electrical functionality. The primary difference is physical dimensions: 8-MSOP measures 0.118" (3.00mm) width, while 8-VSSOP measures 0.110" (2.80mm) width. Both packages are compatible with standard PCB layouts designed for 8-pin dual-in-line surface mount devices. Verify PCB footprint compatibility before substitution.

Q3: Why do some substitute parts have lower supply current specifications than the ISL28246FUZ?

A: Lower supply current reflects advances in semiconductor process technology and circuit design optimization. CMOS-based amplifiers (such as BU7266, LPV542, and OPA2348 series) typically consume less quiescent current than bipolar or BiCMOS designs. For applications where power consumption is not a constraint, lower supply current provides no functional advantage but does reduce thermal dissipation and improve efficiency in battery-powered systems.

Q4: What does "General Purpose" versus "CMOS" amplifier type indicate?

A: "General Purpose" typically indicates a bipolar or BiCMOS input stage design, while "CMOS" indicates a fully complementary metal-oxide-semiconductor input stage. CMOS amplifiers feature extremely low input bias current (picoamperes) compared to general purpose designs (nanoamperes). For applications sensitive to input bias current or requiring high input impedance, CMOS substitutes (BU7266, BU7486, LMV852, LPV542, OPA2348) are preferred. For applications where input bias current is not critical, general purpose substitutes (NCV20032DMR2G, NCS20032DMR2G, LMV772QMM/NOPB) provide adequate performance.

Q5: How do I determine if a substitute part's slew rate is adequate for my application?

A: Slew rate determines the maximum rate of change of output voltage. For audio and low-frequency signal processing, slew rates below 1 V/µs are typically adequate. For high-speed signal conditioning, data acquisition, and RF applications, slew rates of 5 V/µs or higher are required. The ISL28246FUZ specifies 1.9 V/µs, suitable for general-purpose analog signal processing. Tier 1 substitutes (NCV20032DMR2G, NCS20032DMR2G) provide 8 V/µs, exceeding this requirement. Tier 3 and 4 substitutes provide lower slew rates and are suitable only for bandwidth-limited applications.

Q6: What is the importance of the -3dB bandwidth specification listed for the ISL28246FUZ?

A: The -3dB bandwidth (13 MHz for the ISL28246FUZ) indicates the frequency at which the amplifier's gain drops to 70.7% of its DC value. This specification is distinct from gain bandwidth product and provides direct information about frequency response. Most substitute parts do not explicitly list -3dB bandwidth; instead, gain bandwidth product is provided. For applications requiring specific frequency response characteristics, calculate the -3dB bandwidth from gain bandwidth product using the relationship: -3dB Bandwidth ≈ Gain Bandwidth Product / (1 + Closed-Loop Gain).

Q7: Why is the operating temperature range important for substitution?

A: Operating temperature range defines the thermal environment in which the component functions within specification. The ISL28246FUZ operates from -40°C to 125°C. Tier 1 substitutes (NCV20032DMR2G, NCS20032DMR2G, LMV772QMM/NOPB, LMV852MME/NOPB, LPV542 series, OPA2348AIDGK) match or exceed this range. BU7266FVM-TR is limited to -40°C to 85°C, which is inadequate for applications requiring the full -40°C to 125°C range. Verify that the substitute part's temperature range matches or exceeds the application's thermal requirements.

Q8: What does "ROHS3 Compliant" mean, and why is it relevant?

A: ROHS3 (Restriction of Hazardous Substances Directive 3) compliance indicates that the component does not contain restricted substances including lead, cadmium, mercury, hexavalent chromium, polybrominated biphenyls, or polybrominated diphenyl ethers. All listed substitute parts are ROHS3 compliant, matching the original ISL28246FUZ specification. This compliance is mandatory for products sold in the European Union and is increasingly required by global manufacturers and procurement standards.

Q9: What is the significance of Moisture Sensitivity Level (MSL) ratings?

A: MSL ratings define the maximum time a component can be stored in ambient conditions (typically 30°C, 85% relative humidity) before requiring baking to remove absorbed moisture. MSL 1 (Unlimited) indicates no time restriction. MSL 2 (1 Year) indicates a one-year storage limit before baking is required. The ISL28246FUZ carries MSL 2, requiring careful inventory management. Most substitute parts carry MSL 1, providing superior handling flexibility and reduced risk of moisture-induced failures during assembly.

Q10: Are there any substitutes suitable for automotive applications?

A: The LMV772QMM/NOPB carries AEC-Q100 automotive qualification, indicating compliance with automotive industry reliability and quality standards. This part is suitable for automotive applications requiring qualified components. Other substitute parts do not carry explicit automotive qualification but may be acceptable depending on specific automotive application requirements and qualification procedures.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message