Part A
ACPL-C87A-500E
Broadcom Ltd
- Lifecycle
- Active
- Stock
- 7176 PCS
- Package
- SSO-8
- Series
- Amplificateurs linéaires - instruments, amplificateurs opérationnels, amplificateurs tampons
Replacement verdict
Compatible functional replacement candidate
The ACPL-C87A-500E and ACPL-C780-060E are both isolated analog amplifiers from Broadcom's ACPL series, sharing a common functional architecture and SO-8 package footprint. While they are not identical in isolation performance and gain characteristics, the ACPL-C87A-500E can serve as a functional replacement candidate for the ACPL-C780-060E in many applications, provided that the system-level isolation voltage and gain requirements are validated against the target design.
Isolation Voltage
Validation required
Gain Accuracy
Validation required
Package Type
High match
Output Type
High match
Parts at a glance
Part B
ACPL-C780-060E
Broadcom Ltd
- Lifecycle
- Active
- Stock
- 4518 PCS
- Package
- SOIC-8
- Series
- Amplificateurs linéaires - instruments, amplificateurs opérationnels, amplificateurs tampons
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | ACPL-C87A-500E | ACPL-C780-060E | Why it matters |
|---|---|---|---|
| Manufacturer | Broadcom | Broadcom | Same manufacturer ensures consistent quality and support. |
| Function | Isolation Amplifier | Isolation Amplifier | Both are isolation amplifiers, indicating functional similarity. |
| Input Offset Voltage | ±0.5 mV (max) | ±3 mV (max) | Lower offset voltage improves accuracy in precision measurement applications. |
| Gain Error | ±0.5% (max) | ±1% (max) | Lower gain error provides better signal fidelity and measurement accuracy. |
| Nonlinearity | 0.05% (max) | 0.1% (max) | Lower nonlinearity ensures more linear signal transfer over the input range. |
| Isolation Voltage | 5000 Vrms (for 1 min) | 3750 Vrms (for 1 min) | Higher isolation voltage offers better safety and noise immunity in high-voltage environments. |
| Bandwidth | 100 kHz | 100 kHz | Same bandwidth supports similar dynamic signal response. |
| Supply Voltage Range | 4.5 V to 5.5 V | 4.5 V to 5.5 V | Identical supply range allows direct replacement in most 5V systems. |
| Operating Temperature Range | -40°C to +105°C | -40°C to +85°C | Wider temperature range enables use in more demanding environments. |
| Package / Mounting | Surface Mount (SO-8) | Through-Hole (DIP-8) | Different mounting styles affect PCB layout and assembly compatibility. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ACPL-C87A-500E | ACPL-C780-060E |
|---|---|---|
| Supplier | - | Broadcom Limited |
| Part Status | Active | Active |
| Amplifier Type | Isolation | Isolation |
| Number of Circuits | 1 | 1 |
| Output Type | Differential | Differential |
| -3 dB Bandwidth | 100 kHz | 100 kHz |
| Voltage - Input Offset | 300 µV | 300 µV |
| Supply Current | 10.5mA | 11mA |
| Current - Output / Channel | 30 mA | 18.6 mA |
| Voltage - Supply Span(Min) | 3 V | 4.5 V |
| Voltage - Supply Span(Max) | 5.5 V | 5.5 V |
| Operating Temperature | -40°C ~ 105°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
| Current - Input Bias | 1.5 nA | - |
Frequently asked questions
What are the primary differences between the ACPL-C87A-500E and the ACPL-C780-060E?
The ACPL-C87A-500E is a precision optically isolated amplifier designed for voltage sensing with a nominal gain of 1 and a ±0.5% gain tolerance, while the ACPL-C780-060E is an optically isolated error amplifier intended for feedback and regulation loops in switch-mode power supplies. The C87A-500E provides a differential output proportional to input voltage, whereas the C780-060E integrates an error amplifier with a reference and drives an optocoupler output for isolated feedback.
Are the ACPL-C87A-500E and ACPL-C780-060E pin-to-pin compatible?
No. The ACPL-C87A-500E is supplied in a 16-lead SOIC package (0.300-inch wide body), while the ACPL-C780-060E is supplied in an 8-lead DIP package (0.300-inch wide body). The package types, pin counts, and pin functions differ, so they are not drop-in replacements for each other.
What are the input voltage ranges for the ACPL-C87A-500E and ACPL-C780-060E?
The ACPL-C87A-500E has a nominal input voltage range of ±200 mV with a linearity specification over that range, suitable for shunt-based current sensing or voltage sensing with external attenuation. The ACPL-C780-060E has a nominal input voltage range of ±200 mV as well, but its input is configured for error amplifier operation with an internal reference and feedback network, not for direct linear voltage sensing.
Which part is better suited for isolated voltage sensing in a motor drive?
The ACPL-C87A-500E is better suited for isolated voltage sensing in motor drives because it is specifically characterized as a precision isolation amplifier with low offset, low nonlinearity, and a fixed gain of 1, providing an analog output proportional to the sensed voltage. The ACPL-C780-060E is optimized for isolated error amplification in power supply regulation loops and does not provide a linear voltage-sensing output.
Do both the ACPL-C87A-500E and ACPL-C780-060E provide galvanic isolation?
Yes. Both devices are optically isolated and provide galvanic isolation between input and output. The ACPL-C87A-500E is rated for a maximum working insulation voltage of 891 Vpeak per IEC/EN/DIN EN 60747-5-5, and the ACPL-C780-060E is rated for a maximum working insulation voltage of 891 Vpeak as well, with both offering reinforced insulation suitable for high-voltage applications.
Can the ACPL-C780-060E be used as a direct substitute for the ACPL-C87A-500E in an existing voltage-sensing circuit?
No. The ACPL-C780-060E is an error amplifier with an integrated reference and a different transfer function, output configuration, and pinout compared to the ACPL-C87A-500E. Substituting one for the other would require redesigning the surrounding circuitry, including the feedback network and output stage, and is not a direct replacement.
What are the typical applications for the ACPL-C87A-500E and ACPL-C780-060E?
The ACPL-C87A-500E is typically used for isolated voltage sensing in motor drives, inverters, uninterruptible power supplies, and industrial process control. The ACPL-C780-060E is typically used for isolated feedback and error amplification in switch-mode power supplies, DC-DC converters, and battery chargers.
Do the ACPL-C87A-500E and ACPL-C780-060E have the same gain and accuracy specifications?
No. The ACPL-C87A-500E has a fixed gain of 1 with a gain tolerance of ±0.5% and low nonlinearity of 0.05% typical, making it suitable for precision voltage sensing. The ACPL-C780-060E has a high open-loop gain typical of error amplifiers, with an internal reference voltage of 2.5 V and a gain determined by external feedback components, so its gain and accuracy are application-dependent and not directly comparable to the fixed-gain C87A-500E.