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BA4558RF-E2 Equivalent & Substitute Parts
Part Overview
The BA4558RF-E2 is a general purpose operational amplifier manufactured by Rohm Semiconductor, configured as a dual-channel (2 circuit) device in an 8-SOP surface mount package. This linear amplifier is designed for general-purpose signal conditioning and amplification applications requiring moderate bandwidth and low power consumption. The device is currently in active product status with substantial inventory availability (35,200 units).
Substitute parts are identified when equivalent electrical performance can be achieved within the specified operating parameters, packaging constraints, and compliance requirements. Alternative models may be necessary due to supply chain considerations, specific application requirements, or design optimization needs.
Substiute Parts
Key Parameters
| Parameter | BA4558RF-E2 Value | Unit |
|---|---|---|
| Amplifier Type | General Purpose | — |
| Number of Circuits | 2 | — |
| Slew Rate | 1 | V/µs |
| Gain Bandwidth Product | 2 | MHz |
| Current - Input Bias | 60 | nA |
| Voltage - Input Offset | 500 | µV |
| Current - Supply | 3 | mA |
| Current - Output / Channel | 10 | mA |
| Voltage - Supply Span (Min) | 8 | V |
| Voltage - Supply Span (Max) | 30 | V |
| Operating Temperature Range | -40 to 105 | °C |
| Mounting Type | Surface Mount | — |
| Package / Case | 8-SOIC (0.173", 4.40mm Width) | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitution logic for the BA4558RF-E2 is based on the following critical parameters:
Primary Substitution Criteria:
- Amplifier Type: General Purpose (matching topology and application class)
- Number of Circuits: 2 (dual-channel configuration)
- Mounting Type: Surface Mount (PCB assembly compatibility)
- Package Category: 8-pin SOIC/SOP variants (physical footprint compatibility)
- Supply Voltage Range: Minimum 8V capability with maximum span of at least 30V
- Operating Temperature: Extended range (-40°C to 105°C or broader)
- RoHS3 Compliance and MSL Level 1 (regulatory and environmental requirements)
Secondary Performance Parameters:
- Slew Rate: 1 V/µs or greater (signal fidelity)
- Gain Bandwidth Product: 2 MHz or greater (frequency response)
- Input Bias Current: 60 nA or lower (input impedance characteristics)
- Input Offset Voltage: 500 µV or lower (DC accuracy)
- Supply Current: 3 mA or lower (power efficiency)
- Output Current per Channel: 10 mA or greater (load driving capability)
Substitute parts meeting these criteria are grouped by amplifier type (General Purpose vs. J-FET) and product status (Active vs. Last Time Buy).
Parameter Comparison
| Part Number | Manufacturer | Amplifier Type | Slew Rate (V/µs) | GBW (MHz) | Input Bias (nA) | Input Offset (µV) | Supply Current (mA) | Output Current (mA) | Supply Min (V) | Supply Max (V) | Temp Range (°C) | Package | Status |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| BA4558RF-E2 | Rohm Semiconductor | General Purpose | 1 | 2 | 60 | 500 | 3 | 10 | 8 | 30 | -40 to 105 | 8-SOP | Active |
| ADTL082ARZ | Analog Devices Inc. | J-FET | 20 | 5 | 2 | 1500 | 1.2 | 27 | 8 | 36 | -40 to 125 | 8-SOIC | Active |
| ADTL082ARZ-REEL | Analog Devices Inc. | J-FET | 20 | 5 | 2 | 1500 | 1.2 | 27 | 8 | 36 | -40 to 125 | 8-SOIC | Active |
| ADTL082ARZ-REEL7 | Analog Devices Inc. | J-FET | 20 | 5 | 2 | 1500 | 1.2 | 27 | 8 | 36 | -40 to 125 | 8-SOIC | Active |
| LM1458M/NOPB | Texas Instruments | General Purpose | 0.5 | 1 | 200 | 1000 | 3 | — | 36 | 36 | 0 to 70 | 8-SOIC | Active |
| LM1458MX/NOPB | National Semiconductor | General Purpose | 0.5 | 1 | 200 | 1000 | 3 | — | 36 | 36 | 0 to 70 | 8-SOIC | Active |
| LM258AMDREP | Texas Instruments | General Purpose | 0.3 | 0.7 | 15 | 2000 | 1 | 30 | 3 | 32 | -55 to 125 | 8-SOIC | Active |
| MC4558CDT | STMicroelectronics | General Purpose | 2.2 | 5.5 | 50 | 1000 | 2.3 | 20 | 4 | 40 | 0 to 70 | 8-SOIC | Active |
| MC4558IDT | STMicroelectronics | General Purpose | 2.2 | 5.5 | 50 | 1000 | 2.3 | 20 | 4 | 40 | -40 to 105 | 8-SOIC | Active |
| RC4558D | Texas Instruments | General Purpose | 1.7 | 3 | 150 | 500 | 2.5 | 10 | 10 | 30 | 0 to 70 | 8-SOIC | Last Time Buy |
| RC4558DR | Texas Instruments | General Purpose | 1.7 | 3 | 150 | 500 | 2.5 | 10 | 10 | 30 | 0 to 70 | 8-SOIC | Active |
Engineering Selection Recommendations
Direct Substitutes (General Purpose, Matched Temperature Range):
The MC4558IDT (STMicroelectronics) is the closest functional equivalent to the BA4558RF-E2. Both devices share an identical operating temperature range (-40°C to 105°C), general purpose amplifier topology, dual-channel configuration, and 8-SOIC packaging. The MC4558IDT demonstrates superior performance with higher slew rate (2.2 V/µs vs. 1 V/µs), greater gain bandwidth product (5.5 MHz vs. 2 MHz), and wider supply voltage range (4–40 V vs. 8–30 V). Both are RoHS3 compliant with MSL Level 1 rating. Inventory availability is substantial (119,399 units).
The RC4558DR (Texas Instruments) provides an alternative with active product status, dual-channel general purpose configuration, and compatible 8-SOIC packaging. Performance characteristics are intermediate between the BA4558RF-E2 and MC4558IDT, with slew rate of 1.7 V/µs and gain bandwidth product of 3 MHz. The operating temperature range is limited to 0–70°C, which does not cover the full extended range of the BA4558RF-E2. Inventory is available (105,400 units).
Substitutes with Extended Temperature Range:
The LM258AMDREP (Texas Instruments) operates across -55°C to 125°C, exceeding the BA4558RF-E2 temperature specification. This device supports lower supply voltages (3 V minimum) and offers higher output current capability (30 mA per channel). However, performance is reduced with lower slew rate (0.3 V/µs) and gain bandwidth product (700 kHz). This substitute is suitable for applications prioritizing extended temperature operation and low supply voltage compatibility over bandwidth performance.
J-FET Topology Alternatives:
The ADTL082ARZ, ADTL082ARZ-REEL, and ADTL082ARZ-REEL7 (Analog Devices Inc.) represent a different amplifier class with J-FET input stage, offering significantly lower input bias current (2 pA vs. 60 nA) and higher slew rate (20 V/µs). These devices are suitable for applications requiring ultra-low input bias current or high-speed signal processing. All three variants are active products with RoHS3 compliance and MSL Level 1 rating. The ADTL082ARZ-REEL7 has the highest inventory (22,215 units).
Limited Availability Substitutes:
The RC4558D (Texas Instruments) carries Last Time Buy status with limited inventory (2,261 units). While functionally compatible, this status indicates discontinuation planning and is not recommended for new designs requiring long-term supply assurance.
The LM1458M/NOPB and LM1458MX/NOPB are legacy general purpose devices with reduced performance (1 MHz gain bandwidth product, 0.5 V/µs slew rate) and fixed 36 V supply requirement. These are suitable only for applications with minimal bandwidth requirements and are not recommended as primary substitutes.
Frequently Asked Questions (FAQ)
Q: Can the MC4558IDT directly replace the BA4558RF-E2 in existing designs?
A: The MC4558IDT is functionally compatible as a direct substitute. Both devices are dual-channel general purpose operational amplifiers in 8-SOIC packaging with identical operating temperature range (-40°C to 105°C). The MC4558IDT offers superior electrical performance with higher slew rate and gain bandwidth product. Physical footprint compatibility requires verification of PCB layout, as the BA4558RF-E2 uses 8-SOP (0.173" width) while the MC4558IDT uses 8-SOIC (0.154" width). Both packages are surface mount with identical pin count and spacing, allowing direct substitution on standard SOIC footprints.
Q: What is the difference between the ADTL082ARZ variants (standard, -REEL, -REEL7)?
A: All three ADTL082ARZ variants are electrically identical J-FET input operational amplifiers with identical electrical specifications. The differences are in packaging and tape configuration for automated assembly. ADTL082ARZ is supplied in Tube packaging, while ADTL082ARZ-REEL and ADTL082ARZ-REEL7 are supplied in Cut Tape & Digi-Reel format for high-volume production. Selection depends on assembly equipment compatibility and volume requirements. Electrical performance and compliance certifications are identical across all three variants.
Q: Why does the LM258AMDREP have a lower supply voltage minimum (3 V) compared to the BA4558RF-E2 (8 V)?
A: The LM258AMDREP is designed for single-supply and low-voltage dual-supply operation, with a minimum supply voltage of 3 V. The BA4558RF-E2 requires a minimum of 8 V across its supply pins. This difference reflects different design topologies and intended application classes. The LM258AMDREP is suitable for battery-powered and low-voltage systems, while the BA4558RF-E2 is optimized for higher supply voltage applications. Selection depends on the specific power supply architecture of the target application.
Q: Is the RC4558D suitable for new product designs?
A: The RC4558D carries Last Time Buy product status, indicating that the manufacturer has announced discontinuation. While currently available in limited quantity (2,261 units), this device is not recommended for new designs requiring long-term production support or future supply assurance. The RC4558DR (active status) is the recommended alternative from Texas Instruments, offering identical electrical specifications with ongoing product support.
Q: What are the key performance differences between general purpose and J-FET input amplifiers?
A: General purpose amplifiers (BA4558RF-E2, MC4558IDT, RC4558DR) use bipolar input stages with moderate input bias current (50–200 nA range) and lower cost. J-FET input amplifiers (ADTL082ARZ series) feature field-effect transistor input stages with extremely low input bias current (2 pA) and higher input impedance. J-FET devices are preferred for high-impedance signal sources and precision measurement applications. General purpose devices are suitable for standard signal conditioning, filtering, and amplification tasks. Selection depends on input impedance requirements and application sensitivity to input bias current.
Q: Are all substitute parts RoHS3 compliant?
A: All substitute parts listed in this reference are RoHS3 compliant with Moisture Sensitivity Level 1 (Unlimited). Compliance certifications are identical across all recommended substitutes, ensuring regulatory compatibility for applications requiring RoHS3 certification. REACH status is Unaffected for all listed devices.
Q: What packaging considerations apply when substituting the BA4558RF-E2?
A: The BA4558RF-E2 is supplied in 8-SOP (0.173" width, 4.40 mm) packaging. Most substitute parts use 8-SOIC (0.154" width, 3.90 mm) packaging. While both are 8-pin surface mount packages with identical pin spacing (1.27 mm), the body width differs. PCB footprints designed for 8-SOP may require modification to accommodate 8-SOIC packages. Verify footprint compatibility with design documentation before implementing substitution. Both package types are compatible with standard reflow soldering processes.
Q: Which substitute offers the best performance improvement over the BA4558RF-E2?
A: The MC4558IDT provides the most significant performance improvement with 2.2× higher slew rate (2.2 V/µs vs. 1 V/µs) and 2.75× higher gain bandwidth product (5.5 MHz vs. 2 MHz). Supply voltage range is also expanded (4–40 V vs. 8–30 V). For applications requiring ultra-low input bias current and maximum slew rate, the ADTL082ARZ series offers 20 V/µs slew rate and 2 pA input bias current, representing a different topology optimized for precision and high-speed applications.
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