ISL28248FUZ Equivalent & Substitute Parts

Part Overview

The ISL28248FUZ is a general purpose operational amplifier manufactured by Renesas Electronics Corporation, configured as a dual-channel (2 circuit) 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, ensure production capability, and support long-term product availability for applications currently utilizing this amplifier.

Key Parameters

Parameter	ISL28248FUZ Value
Amplifier Type	General Purpose
Number of Circuits	2
Output Type	Rail-to-Rail
Slew Rate	4 V/µs
Gain Bandwidth Product	4.5 MHz
-3dB Bandwidth	13 MHz
Current - Input Bias	1 pA
Voltage - Input Offset	1.8 mV
Current - Supply (x2 Channels)	900 µA
Current - Output / Channel	75 mA
Voltage - Supply Span (Min)	2.4 V
Voltage - Supply Span (Max)	5.5 V
Operating Temperature	-40°C to 125°C
Mounting Type	Surface Mount
Package / Case	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Product Status	Obsolete
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the ISL28248FUZ requires matching of critical electrical and mechanical parameters that define functional equivalence. The primary substitution criteria are:

Mandatory Matching Parameters:

Dual-channel configuration (2 circuits)
Rail-to-rail output capability
8-pin surface mount package (8-MSOP or compatible 8-pin variants)
Operating temperature range compatibility (-40°C minimum, 125°C maximum preferred)
Supply voltage span overlap (minimum 2.4 V to 5.5 V range)

Performance Parameters for Functional Equivalence:

Slew rate of 4 V/µs or greater
Gain bandwidth product of 4.5 MHz or greater
Input bias current of 1 pA or lower
Input offset voltage of 1.8 mV or lower
Output current per channel of 75 mA or greater
Supply current of 900 µA or lower per dual-channel configuration

Substitute parts are grouped into two categories: Direct Functional Equivalents (meeting all performance criteria with active product status) and Compatible Alternatives (meeting core electrical requirements with trade-offs in specific parameters or product status).

Parameter Comparison

Parameter	ISL28248FUZ	AD8602ARMZ	AD8602ARMZ-REEL	LMV822IST	LMV822IYST	LMV822MM/NOPB
Manufacturer	Renesas Electronics	Analog Devices Inc.	Analog Devices Inc.	STMicroelectronics	STMicroelectronics	Texas Instruments
Amplifier Type	General Purpose	CMOS	CMOS	General Purpose	General Purpose	General Purpose
Number of Circuits	2	2	2	2	2	2
Output Type	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail
Slew Rate (V/µs)	4	6	6	1.9	1.9	2
Gain Bandwidth Product (MHz)	4.5	8.4	8.4	5.5	5.5	5.6
Current - Input Bias (pA)	1	0.2	0.2	60 nA	60 nA	40 nA
Voltage - Input Offset (mV)	1.8	0.08	0.08	3.5	3.5	1
Current - Supply (µA, x2 Channels)	900	750	750	300	300	500
Current - Output / Channel (mA)	75	50	50	70	70	45
Voltage - Supply Span Min (V)	2.4	2.7	2.7	2.5	2.5	2.5
Voltage - Supply Span Max (V)	5.5	5.5	5.5	5.5	5.5	5.5
Operating Temperature (°C)	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 85
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: AD8602ARMZ / AD8602ARMZ-REEL

The AD8602ARMZ series from Analog Devices Inc. represents the most direct functional equivalent to the ISL28248FUZ. This CMOS dual-channel amplifier exceeds the performance specifications of the original part across multiple parameters: slew rate of 6 V/µs (versus 4 V/µs), gain bandwidth product of 8.4 MHz (versus 4.5 MHz), and superior input bias current of 0.2 pA (versus 1 pA). The device maintains full compatibility with the 8-MSOP package footprint and operates across the required temperature range of -40°C to 125°C. Both tube and reel packaging options are available with active product status and ROHS3 compliance. The AD8602ARMZ-REEL variant offers enhanced moisture sensitivity rating (MSL 1, Unlimited) compared to the original part (MSL 2, 1 Year).

Secondary Substitute: LMV822IST / LMV822IYST

The LMV822 series from STMicroelectronics provides an alternative general purpose amplifier configuration with automotive-grade qualification (AEC-Q100). The LMV822IST and LMV822IYST variants maintain the dual-channel rail-to-rail architecture and 8-MSOP package compatibility. These devices operate across the full -40°C to 125°C temperature range and offer lower supply current (300 µA per dual-channel configuration versus 900 µA). Trade-offs include reduced slew rate (1.9 V/µs versus 4 V/µs) and lower output current per channel (70 mA versus 75 mA). Both variants carry active product status and ROHS3 compliance.

Tertiary Substitute: LMV822MM/NOPB

The LMV822MM/NOPB from Texas Instruments offers general purpose amplifier functionality in the LMV® series with active product status and ROHS3 compliance. This variant operates within the required supply voltage range and maintains the 8-MSOP package footprint. The operating temperature range is limited to -40°C to 85°C, which restricts applicability to designs not requiring the full 125°C upper temperature specification. Supply current (500 µA per dual-channel) and output current per channel (45 mA) are reduced compared to the original part.

Compatibility Assessment:

All recommended substitutes maintain electrical and mechanical compatibility with the ISL28248FUZ through matching dual-channel configuration, rail-to-rail output capability, and 8-pin surface mount packaging. Supply voltage span compatibility is confirmed across all alternatives. Selection should prioritize active product status and full temperature range support for new designs, while considering performance trade-offs in slew rate and output current capacity for specific application requirements.

Frequently Asked Questions (FAQ)

Q: Can the AD8602ARMZ directly replace the ISL28248FUZ without circuit modifications?

A: The AD8602ARMZ is mechanically and electrically compatible with the ISL28248FUZ in terms of pinout, package footprint, and supply voltage requirements. Both devices are dual-channel rail-to-rail amplifiers in 8-MSOP packages. However, the AD8602ARMZ exhibits superior performance specifications (higher slew rate, greater bandwidth, lower input bias current). Circuit validation is required to confirm that the improved performance characteristics do not introduce unintended effects in existing designs, particularly in applications sensitive to bandwidth or slew rate changes.

Q: What is the primary disadvantage of the LMV822 series compared to the ISL28248FUZ?

A: The LMV822 series exhibits reduced slew rate (1.9 V/µs versus 4 V/µs) and lower output current per channel (70 mA versus 75 mA). These parameters may limit applicability in high-speed signal conditioning or high-current output drive applications. The LMV822MM/NOPB variant additionally restricts operating temperature to -40°C to 85°C, excluding designs requiring 125°C operation.

Q: Are all substitute parts ROHS3 compliant?

A: All recommended substitute parts carry ROHS3 compliance certification. The original ISL28248FUZ is also ROHS3 compliant. This ensures compatibility with environmental and regulatory requirements across all alternatives.

Q: What packaging options are available for the AD8602ARMZ?

A: The AD8602ARMZ is available in two packaging configurations: tube packaging (AD8602ARMZ) and cut tape with Digi-Reel® (AD8602ARMZ-REEL). Both variants contain identical electrical specifications and operate across the -40°C to 125°C temperature range. Selection between packaging options depends on procurement volume and assembly process requirements.

Q: Does the ISL28248FUZ have any automotive-grade qualification?

A: The ISL28248FUZ does not carry automotive-grade qualification or AEC-Q100 certification. The LMV822IST and LMV822IYST variants from STMicroelectronics provide automotive-grade alternatives with AEC-Q100 qualification, suitable for applications requiring automotive-level reliability and qualification documentation.

Q: What is the moisture sensitivity level (MSL) difference between the ISL28248FUZ and substitute parts?

A: The ISL28248FUZ carries MSL 2 rating with 1-year shelf life. The AD8602ARMZ series and LMV822 variants carry MSL 1 rating with unlimited shelf life. MSL 1 classification indicates superior moisture resistance and extended storage capability without requiring specialized desiccant packaging or baking procedures prior to assembly.

Q: Can the BU7266 or BU7486 series from Rohm Semiconductor substitute for the ISL28248FUZ?

A: The BU7266 and BU7486 series are not recommended as direct substitutes for the ISL28248FUZ. The BU7266 series exhibits significantly reduced performance specifications (slew rate of 0.0024 V/µs, gain bandwidth product of 4 kHz, output current of 4 mA per channel) unsuitable for general purpose amplifier applications. The BU7486 series requires minimum supply voltage of 3 V (versus 2.4 V for the ISL28248FUZ), limiting low-voltage application compatibility.

Q: Is the FAN4852IMU8X from onsemi a viable substitute?

A: The FAN4852IMU8X is classified as obsolete, matching the product status of the ISL28248FUZ. While this device offers comparable performance specifications (slew rate 6.1 V/µs, gain bandwidth product 9 MHz), the obsolete status does not resolve the original availability constraint. This part is not recommended for new designs or long-term production planning.

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