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ISL28488FVZ Equivalent & Substitute Parts
Part Overview
The ISL28488FVZ is a general-purpose operational amplifier manufactured by Renesas Electronics Corporation, configured as a 4-circuit rail-to-rail amplifier in a 14-TSSOP surface mount package. This device is classified as obsolete, which necessitates identification of active substitute components that maintain functional and electrical compatibility for new designs or production continuity.
The ISL28488FVZ operates across a 2.4V to 5.5V supply range with a gain bandwidth product of 300 kHz and a slew rate of 0.15V/µs. The device is RoHS3 compliant and suitable for applications requiring low-power general-purpose amplification in compact form factors.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Manufacturer Part Number | ISL28488FVZ | — |
| Manufacturer | Renesas Electronics Corporation | — |
| Product Status | Obsolete | — |
| Amplifier Type | General Purpose | — |
| Number of Circuits | 4 | — |
| Output Type | Rail-to-Rail | — |
| Package / Case | 14-TSSOP (0.173", 4.40mm Width) | — |
| Mounting Type | Surface Mount | — |
| Voltage - Supply Span (Min) | 2.4 | V |
| Voltage - Supply Span (Max) | 5.5 | V |
| Slew Rate | 0.15 | V/µs |
| Gain Bandwidth Product | 300 | kHz |
| -3dB Bandwidth | 250 | kHz |
| Current - Input Bias | 10 | pA |
| Voltage - Input Offset | 50 | µV |
| Current - Supply | 60 | µA (x4 Channels) |
| Current - Output / Channel | 31 | mA |
| Operating Temperature | -40 to 125 | °C |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) | — |
Substitute Part Grouping Explanation
Substitution of the ISL28488FVZ is determined by the following critical parameters:
Mandatory Compatibility Criteria:
- Number of Circuits: 4 (quad amplifier configuration)
- Output Type: Rail-to-Rail
- Package / Case: 14-TSSOP (0.173", 4.40mm Width)
- Mounting Type: Surface Mount
- Amplifier Type: General Purpose
- Voltage Supply Range: Minimum 2.4V to Maximum 5.5V (substitute must encompass or exceed this range)
Performance Parameters:
- Slew Rate: 0.15V/µs (minimum baseline)
- Gain Bandwidth Product: 300 kHz (minimum baseline)
- Current - Input Bias: 10 pA (maximum acceptable)
- Voltage - Input Offset: 50 µV (maximum acceptable)
- Current - Supply: 60µA per 4 channels (maximum acceptable)
- Current - Output / Channel: 31 mA (minimum acceptable)
- Operating Temperature: -40°C to 125°C (minimum acceptable range)
Compliance Requirements:
- RoHS3 Compliant
- Surface Mount Technology (SMT)
Substitute parts are grouped into two categories based on amplifier type and performance characteristics:
Category A: General Purpose Amplifiers (Direct Functional Equivalents) Parts maintaining general-purpose amplifier classification with comparable or superior performance metrics within the specified supply voltage and temperature ranges.
Category B: CMOS Amplifiers (Enhanced Performance Alternatives) Parts utilizing CMOS technology offering superior slew rate, gain bandwidth product, and input bias current characteristics while maintaining 4-circuit rail-to-rail configuration and 14-TSSOP packaging.
Parameter Comparison
| Parameter | ISL28488FVZ | BD12734FVJ-E2 | LMR934FVJ-E2 | MAX4094AUD+T | MAX4294EUD+T | MCP6024-E/ST |
|---|---|---|---|---|---|---|
| Manufacturer | Renesas | Rohm | Rohm | Analog Devices | Analog Devices | Microchip |
| Product Status | Obsolete | Active | Active | Active | Active | Active |
| Amplifier Type | General Purpose | General Purpose | General Purpose | General Purpose | General Purpose | General Purpose |
| Number of Circuits | 4 | 4 | 4 | 4 | 4 | 4 |
| Output Type | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail |
| Package / Case | 14-TSSOP | 14-TSSOP | 14-TSSOP | 14-TSSOP | 14-TSSOP | 14-TSSOP |
| Voltage - Supply Span (Min) | 2.4 V | 1.8 V | 1.8 V | 2.7 V | 1.8 V | 2.5 V |
| Voltage - Supply Span (Max) | 5.5 V | 5 V | 5 V | 6 V | 5.5 V | 5.5 V |
| Slew Rate (V/µs) | 0.15 | 0.4 | 0.35 | 0.2 | 0.2 | 7 |
| Gain Bandwidth Product (kHz) | 300 | 1000 | 1400 | 500 | 500 | 10000 |
| Current - Input Bias (pA) | 10 | 50 | 5 | 20 | 15 | 1 |
| Voltage - Input Offset (µV) | 50 | 1000 | 1000 | 30 | 200 | 250 |
| Current - Supply (µA) | 60 | 1200 | 250 | 130 | 100 | 1000 |
| Current - Output / Channel (mA) | 31 | 12 | 90 | — | 20 | 30 |
| Operating Temperature (°C) | -40 to 125 | -40 to 85 | -40 to 85 | -40 to 125 | -40 to 85 | -40 to 125 |
| RoHS Status | ROHS3 | ROHS3 | ROHS3 | ROHS3 | ROHS3 | ROHS3 |
| MSL | 3 | 1 | 1 | 1 | 1 | 1 |
Engineering Selection Recommendations
Primary Substitute: MAX4094AUD+T
The MAX4094AUD+T from Analog Devices Inc./Maxim Integrated is the closest functional equivalent to the ISL28488FVZ. This device maintains identical packaging (14-TSSOP), quad general-purpose amplifier configuration, and rail-to-rail output characteristics. The MAX4094AUD+T operates across a 2.7V to 6V supply range, which encompasses the ISL28488FVZ operating window. The device is active in production status with RoHS3 compliance and MSL 1 rating, providing superior moisture handling compared to the obsolete ISL28488FVZ. Operating temperature range extends to 125°C, matching the original specification. The slew rate of 0.2V/µs and gain bandwidth product of 500 kHz exceed the ISL28488FVZ baseline, providing improved transient response.
Secondary Substitute: MAX4294EUD+T
The MAX4294EUD+T offers an alternative from Analog Devices with identical packaging and quad configuration. This device operates across 1.8V to 5.5V, providing extended low-voltage capability. The slew rate and gain bandwidth product match the MAX4094AUD+T. Operating temperature is limited to 85°C, which does not cover the full -40°C to 125°C range of the ISL28488FVZ. This device is suitable for applications not requiring the extended upper temperature specification.
Tertiary Substitute: MCP6024-E/ST
The MCP6024-E/ST from Microchip Technology provides the highest performance alternative with a 14-TSSOP package and quad general-purpose amplifier configuration. This device delivers a slew rate of 7V/µs and gain bandwidth product of 10 MHz, substantially exceeding the ISL28488FVZ performance envelope. Operating temperature range extends to 125°C with RoHS3 compliance. The supply voltage range of 2.5V to 5.5V encompasses the ISL28488FVZ specification. This device is recommended for applications requiring enhanced bandwidth and slew rate performance while maintaining the same package footprint.
Alternative Consideration: LMR934FVJ-E2
The LMR934FVJ-E2 from Rohm Semiconductor provides a general-purpose amplifier option with 14-TSSOP packaging and quad configuration. This device offers a slew rate of 0.35V/µs and gain bandwidth product of 1.4 MHz, exceeding the ISL28488FVZ baseline. Supply voltage range is 1.8V to 5V, which does not fully encompass the ISL28488FVZ maximum specification of 5.5V. Operating temperature is limited to 85°C. This device is suitable for applications operating within the 1.8V to 5V window and not requiring extended temperature operation.
Not Recommended: BD12734FVJ-E2, BU7487FV-E2, BU7487SFV-E2, LMR344FVJ-E2
The BD12734FVJ-E2 operates at a maximum supply voltage of 5V, which does not encompass the ISL28488FVZ 5.5V specification. The BU7487FV-E2 and BU7487SFV-E2 are CMOS amplifiers with minimum supply voltage of 3V, excluding low-voltage operation below 2.4V. The LMR344FVJ-E2 is a CMOS amplifier with minimum supply voltage of 2.7V and maximum of 5.5V; however, the operating temperature range is limited to 85°C, which does not cover the full ISL28488FVZ specification of -40°C to 125°C.
Frequently Asked Questions (FAQ)
Q: Can the MAX4094AUD+T directly replace the ISL28488FVZ without circuit modifications?
A: The MAX4094AUD+T is pin-compatible and functionally equivalent within the specified operating parameters. Both devices feature identical 14-TSSOP packaging, quad general-purpose amplifier configuration, and rail-to-rail output. The supply voltage range of the MAX4094AUD+T (2.7V to 6V) encompasses the ISL28488FVZ specification (2.4V to 5.5V). Direct substitution is supported for applications operating within the overlapping voltage range of 2.7V to 5.5V. Applications requiring operation below 2.7V require alternative selection.
Q: What is the primary difference between the MAX4094AUD+T and MCP6024-E/ST?
A: Both devices are quad general-purpose amplifiers in 14-TSSOP packaging with rail-to-rail output. The MCP6024-E/ST provides significantly higher performance with a slew rate of 7V/µs and gain bandwidth product of 10 MHz, compared to the MAX4094AUD+T slew rate of 0.2V/µs and gain bandwidth product of 500 kHz. The MCP6024-E/ST is suitable for applications requiring enhanced bandwidth and transient response. The MAX4094AUD+T is appropriate for applications with performance requirements closer to the ISL28488FVZ baseline.
Q: Why is the BD12734FVJ-E2 not recommended as a substitute?
A: The BD12734FVJ-E2 operates at a maximum supply voltage of 5V, which does not encompass the ISL28488FVZ maximum specification of 5.5V. Applications designed to operate at 5.5V would exceed the maximum rating of the BD12734FVJ-E2, creating a functional incompatibility. Additionally, the operating temperature range is limited to 85°C, which does not cover the full ISL28488FVZ specification of -40°C to 125°C.
Q: Are all substitute parts RoHS3 compliant?
A: All substitute parts listed in this reference are RoHS3 compliant, matching the compliance status of the ISL28488FVZ. This ensures regulatory compatibility for applications subject to RoHS3 requirements.
Q: What is the significance of the MSL (Moisture Sensitivity Level) rating?
A: The ISL28488FVZ carries an MSL rating of 3 (168 hours), indicating higher moisture sensitivity compared to substitute parts with MSL 1 (unlimited). Substitute parts with MSL 1 rating provide superior moisture handling and extended shelf life without requiring specialized storage conditions. This represents an improvement over the original device specification.
Q: Can the LMR934FVJ-E2 be used in applications requiring 5.5V operation?
A: The LMR934FVJ-E2 operates at a maximum supply voltage of 5V, which does not encompass the ISL28488FVZ maximum specification of 5.5V. Applications designed to operate at 5.5V would exceed the maximum rating of the LMR934FVJ-E2. This device is suitable only for applications operating within the 1.8V to 5V window.
Q: What is the operating temperature limitation for the MAX4294EUD+T?
A: The MAX4294EUD+T operates across -40°C to 85°C, which does not cover the full ISL28488FVZ specification of -40°C to 125°C. This device is not suitable for applications requiring operation above 85°C. The MAX4094AUD+T or MCP6024-E/ST are recommended for applications requiring extended upper temperature operation to 125°C.
Q: Are there packaging differences between the ISL28488FVZ and substitute parts?
A: All recommended substitute parts utilize identical 14-TSSOP (0.173", 4.40mm Width) surface mount packaging. Pin-to-pin compatibility is maintained across all substitute options. No PCB layout modifications are required for package accommodation.
Q: Which substitute provides the best performance improvement over the ISL28488FVZ?
A: The MCP6024-E/ST provides the most significant performance enhancement with a slew rate of 7V/µs (compared to 0.15V/µs) and gain bandwidth product of 10 MHz (compared to 300 kHz). This device is suitable for applications requiring substantially improved bandwidth and transient response characteristics while maintaining the same 14-TSSOP package footprint and quad amplifier configuration.
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