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BU7487F-E2 Equivalent & Substitute Parts
Part Overview
The BU7487F-E2 is a CMOS 4-circuit amplifier manufactured by Rohm Semiconductor, configured as a rail-to-rail operational amplifier in a 14-SOP surface mount package. This device is classified as Active product status and is ROHS3 compliant. The BU7487F-E2 is utilized in applications requiring low-power, multi-channel amplification with rail-to-rail output capability across a 3V to 5.5V supply range. Equivalent and substitute parts are identified to provide design flexibility, accommodate supply chain variations, and support alternative sourcing strategies while maintaining functional compatibility within specified electrical and mechanical parameters.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Amplifier Type | CMOS | — |
| Number of Circuits | 4 | — |
| Output Type | Rail-to-Rail | — |
| Slew Rate | 10 | V/µs |
| Gain Bandwidth Product | 10 | MHz |
| Current - Input Bias | 1 | pA |
| Voltage - Input Offset | 1 | mV |
| Current - Supply | 6 | mA |
| Current - Output / Channel | 12 | mA |
| Voltage - Supply Span (Min) | 3 | V |
| Voltage - Supply Span (Max) | 5.5 | V |
| Operating Temperature | -40 to 105 | °C |
| Mounting Type | Surface Mount | — |
| Package / Case | 14-SOIC (0.173", 4.40mm Width) | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitute parts for the BU7487F-E2 are selected based on functional equivalence across critical electrical and mechanical parameters. The primary substitution criteria include:
Electrical Compatibility Parameters:
- Four-circuit amplifier configuration
- Rail-to-rail output capability
- Supply voltage range compatibility (minimum 3V to maximum 5.5V overlap)
- Operating temperature range coverage (-40°C minimum)
- Surface mount packaging in 14-pin SOIC form factor
Mechanical Compatibility Parameters:
- 14-pin SOIC package footprint
- Surface mount technology (SMT)
- Pin-compatible or functionally equivalent pinout
Substitute parts are grouped into two categories based on performance characteristics:
Category 1: Direct Performance Equivalents — Parts with comparable slew rate (1V/µs to 10V/µs) and gain bandwidth product (2MHz to 10MHz), suitable for applications with similar dynamic response requirements.
Category 2: Lower Performance Alternatives — Parts with reduced slew rate (0.048V/µs) and gain bandwidth product (130kHz), applicable to applications where lower bandwidth is acceptable and power consumption is prioritized.
All substitute parts maintain ROHS3 compliance and active product status, ensuring regulatory alignment and long-term availability.
Parameter Comparison
| Part Number | Manufacturer | Amplifier Type | Number of Circuits | Output Type | Slew Rate (V/µs) | Gain Bandwidth Product (MHz) | Current - Supply (mA) | Voltage - Supply Min (V) | Voltage - Supply Max (V) | Operating Temp (°C) | Package | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| BU7487F-E2 | Rohm Semiconductor | CMOS | 4 | Rail-to-Rail | 10 | 10 | 6 | 3 | 5.5 | -40 to 105 | 14-SOIC (0.173") | ROHS3 |
| ISL28413FBZ | Renesas Electronics | General Purpose | 4 | Rail-to-Rail | 1 | 2 | 0.36 | 1.8 | 5.5 | -40 to 125 | 14-SOIC (0.154") | ROHS3 |
| ISL28413FBZ-T7 | Renesas Electronics | General Purpose | 4 | Rail-to-Rail | 1 | 2 | 0.36 | 1.8 | 5.5 | -40 to 125 | 14-SOIC (0.154") | ROHS3 |
| ISL28414FBZ | Renesas Electronics | General Purpose | 4 | Rail-to-Rail | 2.5 | 5 | 1.2 | 1.8 | 5.5 | -40 to 125 | 14-SOIC (0.154") | ROHS3 |
| ISL28414FBZ-T7 | Renesas Electronics | General Purpose | 4 | Rail-to-Rail | 2.5 | 5 | 1.2 | 1.8 | 5.5 | -40 to 125 | 14-SOIC (0.154") | ROHS3 |
| LMP2234AMAE/NOPB | Texas Instruments | General Purpose | 4 | Differential, Rail-to-Rail | 0.048 | 0.13 | 0.144 | 1.6 | 5.5 | -40 to 125 | 14-SOIC (0.154") | ROHS3 |
| LMP2234AMAX/NOPB | Texas Instruments | General Purpose | 4 | Differential, Rail-to-Rail | 0.048 | 0.13 | 0.144 | 1.6 | 5.5 | -40 to 125 | 14-SOIC (0.154") | ROHS3 |
| LMP2234BMA/NOPB | Texas Instruments | General Purpose | 4 | Differential, Rail-to-Rail | 0.048 | 0.13 | 0.144 | 1.6 | 5.5 | -40 to 125 | 14-SOIC (0.154") | ROHS3 |
| LMP2234BMAE/NOPB | Texas Instruments | General Purpose | 4 | Differential, Rail-to-Rail | 0.048 | 0.13 | 0.144 | 1.6 | 5.5 | -40 to 125 | 14-SOIC (0.154") | ROHS3 |
| LMP2234BMAX/NOPB | Texas Instruments | General Purpose | 4 | Differential, Rail-to-Rail | 0.048 | 0.13 | 0.144 | 1.6 | 5.5 | -40 to 125 | 14-SOIC (0.154") | ROHS3 |
| LMV324BG-13 | Diodes Incorporated | General Purpose | 4 | Rail-to-Rail | 1 | 1 | 1.36 | 2.7 | 5.5 | -40 to 125 | 14-SOIC (0.154") | ROHS3 |
Engineering Selection Recommendations
Renesas ISL28413 Series (ISL28413FBZ, ISL28413FBZ-T7): These parts are suitable for applications where lower power consumption is prioritized over dynamic performance. The ISL28413 series operates with significantly reduced supply current (0.36mA total) compared to the BU7487F-E2 (6mA). The extended minimum supply voltage (1.8V) provides flexibility for lower-voltage applications. Operating temperature range extends to 125°C. Both tube and tape & reel packaging options are available. ROHS3 compliance and active product status are confirmed.
Renesas ISL28414 Series (ISL28414FBZ, ISL28414FBZ-T7): These parts provide intermediate performance characteristics with slew rate of 2.5V/µs and gain bandwidth product of 5MHz. Supply current is 1.2mA total, representing a middle ground between the BU7487F-E2 and ISL28413 series. Extended operating temperature to 125°C and minimum supply voltage of 1.8V are supported. Both tube and tape & reel packaging options are available. ROHS3 compliance and active product status are confirmed.
Texas Instruments LMP2234 Series (LMP2234AMAE/NOPB, LMP2234AMAX/NOPB, LMP2234BMA/NOPB, LMP2234BMAE/NOPB, LMP2234BMAX/NOPB): These parts are applicable to precision, low-power applications where extremely low input bias current (0.02pA) and low input offset voltage (10µV) are required. The LMP2234 series exhibits significantly lower slew rate (0.048V/µs) and gain bandwidth product (130kHz), making them unsuitable for high-speed signal processing. Supply current is 0.144mA total. Extended operating temperature to 125°C and minimum supply voltage of 1.6V are supported. Multiple packaging options (tube and tape & reel) are available. ROHS3 compliance and MSL 1 (Unlimited) rating provide superior moisture handling. Active product status is confirmed.
Diodes Incorporated LMV324BG-13: This part is suitable for general-purpose applications with moderate performance requirements. Slew rate is 1V/µs and gain bandwidth product is 1MHz. Supply current is 1.36mA total. Minimum supply voltage is 2.7V, which is higher than the BU7487F-E2 minimum of 3V but within the 3V to 5.5V operating range. Operating temperature extends to 125°C. Cut tape and Digi-Reel packaging is available. ROHS3 compliance and active product status are confirmed. MSL rating of 3 (168 Hours) indicates standard moisture sensitivity.
All substitute parts maintain ROHS3 compliance and active product status, ensuring regulatory alignment and continued availability. Selection should be based on specific application requirements for power consumption, bandwidth, precision, and operating temperature range.
Frequently Asked Questions (FAQ)
Q: Can the ISL28413FBZ directly replace the BU7487F-E2 in all applications?
A: The ISL28413FBZ shares the same four-circuit, rail-to-rail configuration and 14-SOIC package footprint. However, the ISL28413FBZ has significantly lower slew rate (1V/µs versus 10V/µs) and gain bandwidth product (2MHz versus 10MHz). Direct substitution is valid only for applications where these reduced performance parameters are acceptable. The lower supply current (0.36mA versus 6mA) may provide power consumption benefits.
Q: What is the difference between ISL28413FBZ and ISL28413FBZ-T7?
A: Both parts are electrically identical. The primary difference is packaging format: ISL28413FBZ is supplied in tube packaging, while ISL28413FBZ-T7 is supplied in tape & reel format. Selection depends on assembly process requirements and volume considerations.
Q: Are the LMP2234 series parts suitable for high-speed applications?
A: No. The LMP2234 series exhibits slew rate of 0.048V/µs and gain bandwidth product of 130kHz, which are significantly lower than the BU7487F-E2 specifications (10V/µs and 10MHz respectively). The LMP2234 series is designed for precision, low-power applications where bandwidth is not a primary requirement. These parts are not suitable for high-speed signal processing.
Q: What is the significance of the minimum supply voltage differences?
A: The BU7487F-E2 requires a minimum supply voltage of 3V. The ISL28413 and ISL28414 series support 1.8V minimum, and the LMP2234 series supports 1.6V minimum. If the application operates below 3V, the BU7487F-E2 cannot be used, but the Renesas or Texas Instruments alternatives may be suitable. Conversely, if the application requires operation at exactly 3V, all substitute parts are compatible.
Q: How do package dimensions affect substitution?
A: The BU7487F-E2 is packaged in 14-SOIC with 0.173" (4.40mm) width. Most substitute parts use 14-SOIC with 0.154" (3.90mm) width. While both are 14-pin SOIC packages, the physical dimensions differ. PCB layout and footprint design must accommodate the specific package width. Verify footprint compatibility before substitution.
Q: What does MSL (Moisture Sensitivity Level) rating mean for substitution?
A: MSL rating indicates moisture sensitivity during storage and handling. The BU7487F-E2 has MSL 1 (Unlimited), meaning no moisture precautions are required. The ISL28413 and ISL28414 series have MSL 2 (1 Year), requiring storage in dry conditions for up to one year. The LMP2234 series has MSL 1 (Unlimited), matching the BU7487F-E2. The LMV324BG-13 has MSL 3 (168 Hours), requiring more stringent moisture control. Select parts based on your storage and handling capabilities.
Q: Can I use the LMV324BG-13 as a direct replacement?
A: The LMV324BG-13 shares the four-circuit, rail-to-rail configuration and 14-SOIC package footprint. However, the minimum supply voltage is 2.7V, which is below the BU7487F-E2 minimum of 3V. If your application operates at 3V or higher, the LMV324BG-13 is compatible. The slew rate (1V/µs) and gain bandwidth product (1MHz) are lower than the BU7487F-E2, so verify that reduced performance is acceptable for your application.
Q: What is the difference between rail-to-rail and differential output types?
A: Rail-to-rail output means the amplifier output can swing from the negative supply rail to the positive supply rail. Differential output (as in the LMP2234 series) refers to a different output configuration. For applications requiring standard rail-to-rail operation, the LMP2234 series may not be suitable without circuit redesign.
Q: How do I determine which substitute part is best for my application?
A: Identify the critical performance parameters for your application: required slew rate, gain bandwidth product, supply voltage range, operating temperature range, and power consumption limits. Cross-reference these requirements against the parameter comparison table. Parts that meet or exceed all critical requirements are suitable substitutes. Verify package compatibility with your PCB layout before final selection.
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