Part A
ACPL-C87A-500E
Công ty TNHH Broadcom
- Lifecycle
- Active
- Stock
- 7176 PCS
- Package
- SSO-8
- Series
- Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps
Replacement verdict
Compatible functional replacement candidate
The ACPL-C87A-500E and ACPL-C780-560E are both isolated analog-to-digital converter optocouplers from Broadcom with matching 16-bit sigma-delta architecture, 5 V supply, and SO-8 package, making the ACPL-C87A-500E a viable functional replacement candidate for the ACPL-C780-560E in most isolated current and voltage sensing applications. However, designers must validate the tighter gain tolerance, higher isolation working voltage, and differing input signal range of the ACPL-C87A-500E against the specific system requirements before committing to a drop-in substitution.
Package Type
High match
Output Type
High match
Input Signal Range
Validation required
Isolation Voltage
Validation required
Parts at a glance
Part B
ACPL-C780-560E
Công ty TNHH Broadcom
- Lifecycle
- Active
- Stock
- 5247 PCS
- Package
- SOIC-8
- Series
- Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps
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-C780-560E | Why it matters |
|---|---|---|---|
| Manufacturer | Broadcom | Broadcom | Same manufacturer ensures consistent quality and support. |
| Product Category | Isolation Amplifiers | Isolation Amplifiers | Both are isolation amplifiers, indicating functional similarity. |
| Number of Channels | 1 | 1 | Single-channel configuration affects circuit design and channel density. |
| Isolation Voltage | 5000 Vrms | 5000 Vrms | Higher isolation voltage provides better safety and noise immunity in high-voltage applications. |
| Input Offset Voltage | ±0.5 mV | ±3 mV | Lower offset voltage improves accuracy in precision measurement applications. |
| Gain Error | ±0.5% | ±1% | Lower gain error ensures more accurate signal amplification. |
| Bandwidth | 100 kHz | 100 kHz | Bandwidth determines the maximum frequency the amplifier can accurately process. |
| Operating Temperature Range | -40°C to +105°C | -40°C to +85°C | Wider temperature range allows operation in more demanding environments. |
| Package / Case | 8-SOIC (0.295", 7.50mm Width) | 8-SOIC (0.295", 7.50mm Width) | Package compatibility affects PCB layout and assembly. |
| Supply Voltage | 4.5 V to 5.5 V | 4.5 V to 5.5 V | Supply voltage range must match the system power rails. |
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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-C780-560E |
|---|---|---|
| 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 ACPL-C780-560E?
The ACPL-C87A-500E is a precision optically isolated amplifier designed for voltage sensing with a ±0.5% gain tolerance and 1.5 µV/°C offset drift, while the ACPL-C780-560E is an optically isolated error amplifier intended for feedback and regulation loops in switch-mode power supplies, with a ±1% gain tolerance and 10 µV/°C offset drift. The C87A targets isolated voltage sensing, whereas the C780 targets isolated error amplification and feedback control.
Are the ACPL-C87A-500E and ACPL-C780-560E pin-to-pin compatible?
No. The ACPL-C87A-500E is supplied in a 5-lead SO-8 package, while the ACPL-C780-560E is supplied in an 8-lead DIP-8 package. 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-C780-560E?
The ACPL-C87A-500E has a nominal input voltage range of ±200 mV with a recommended full-scale input of ±200 mV. The ACPL-C780-560E has a nominal input voltage range of ±200 mV as well, but its input configuration and internal gain stage are optimized for error amplifier applications rather than precision voltage sensing.
What isolation voltage ratings do the ACPL-C87A-500E and ACPL-C780-560E provide?
Both the ACPL-C87A-500E and ACPL-C780-560E are rated for 5 kVrms isolation for 1 minute per UL 1577. The ACPL-C87A-500E also carries IEC/EN/DIN EN 60747-5-5 approval with a working voltage of 891 Vpeak, while the ACPL-C780-560E carries the same 5 kVrms UL rating but its IEC/EN/DIN EN 60747-5-5 working voltage is 630 Vpeak.
Which part is better suited for isolated voltage sensing in motor drive or inverter applications?
The ACPL-C87A-500E is better suited for isolated voltage sensing in motor drive and inverter applications because it is specifically characterized for voltage sensing with low offset drift (1.5 µV/°C), high gain accuracy (±0.5%), and a signal bandwidth of 100 kHz. The ACPL-C780-560E is intended for error amplifier and feedback loop applications and does not provide the same level of precision voltage sensing performance.
What are the operating temperature ranges for the ACPL-C87A-500E and ACPL-C780-560E?
Both the ACPL-C87A-500E and ACPL-C780-560E are specified for an operating temperature range of –40 °C to +105 °C. This range is consistent across both parts and is suitable for industrial and automotive-grade environments when used within the specified supply and input conditions.
Can the ACPL-C780-560E be used as a direct substitute for the ACPL-C87A-500E in an existing voltage sensing circuit?
No. The ACPL-C780-560E is an error amplifier with a different internal topology, different gain and offset specifications, and a different package (DIP-8 vs SO-8). Substituting it for the ACPL-C87A-500E in a voltage sensing circuit would require redesign of the input network, compensation, and PCB layout, and would not meet the same accuracy and drift performance.
What supply voltage ranges are supported by the ACPL-C87A-500E and ACPL-C780-560E?
The ACPL-C87A-500E operates from a single 5 V supply on the input side and a 3.0 V to 5.5 V supply on the output side. The ACPL-C780-560E operates from a 5 V supply on the input side and a 3.0 V to 5.5 V supply on the output side. Both parts require external bypass capacitors as specified in the respective datasheets.
Which part offers better gain accuracy and offset drift for precision isolated measurement?
The ACPL-C87A-500E offers better gain accuracy and offset drift for precision isolated measurement, with a gain tolerance of ±0.5% and offset drift of 1.5 µV/°C. The ACPL-C780-560E has a gain tolerance of ±1% and offset drift of 10 µV/°C, making it less suitable for high-precision voltage sensing applications.