Part A
ACPL-C87B-000E
Broadcom Ltd
- Lifecycle
- Active
- Stock
- 7760 PCS
- Package
- SSO-8
- Series
- Amplificateurs linéaires - instruments, amplificateurs opérationnels, amplificateurs tampons
Replacement verdict
Compatible functional replacement candidate
The ACPL-C87B-000E and ACPL-C78A-060E are both isolated analog-to-digital converter optocouplers from Broadcom's ACPL-C87x/C78x family, sharing a 16-pin SOIC wide-body package, single 5 V supply, and sigma-delta modulation architecture. The ACPL-C87B-000E offers higher isolation working voltage and tighter gain tolerance, while the ACPL-C78A-060E provides a lower input offset and slightly different gain specification. Both devices are functionally interchangeable in most isolated voltage and current sensing applications, but the designer must validate gain error, input offset drift, and isolation rating against the target system requirements before committing to a drop-in replacement.
Package Type
High match
Output Type
High match
Isolation Voltage Rating
Validation required
Gain and Offset Accuracy
Validation required
Parts at a glance
Part B
ACPL-C78A-060E
Broadcom Ltd
- Lifecycle
- Active
- Stock
- 4839 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-C87B-000E | ACPL-C78A-060E | Why it matters |
|---|---|---|---|
| Manufacturer | Broadcom | Broadcom | Same manufacturer ensures consistent quality and support. |
| Product Category | Isolation Amplifiers | Isolation Amplifiers | Both are isolation amplifiers, indicating similar functional roles. |
| Input Offset Voltage | ±0.5 mV | ±3 mV | Lower offset voltage improves measurement accuracy. |
| Gain Error | ±0.5% | ±1% | Lower gain error ensures better signal fidelity. |
| Nonlinearity | 0.05% | 0.1% | Lower nonlinearity indicates more linear amplification. |
| Isolation Voltage | 5000 Vrms | 5000 Vrms | Higher isolation voltage provides better safety and noise immunity. |
| Operating Temperature Range | -40°C to +105°C | -40°C to +85°C | Wider temperature range allows use in harsher environments. |
| Supply Voltage | 4.5 V to 5.5 V | 4.5 V to 5.5 V | Compatible supply voltage ensures direct replacement in most designs. |
| Package / Case | 8-SOIC | 8-SOIC | Same package allows drop-in replacement without PCB changes. |
| Bandwidth | 100 kHz | 100 kHz | Sufficient bandwidth for many industrial and motor control applications. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ACPL-C87B-000E | ACPL-C78A-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 ACPL-C87B-000E and ACPL-C78A-060E?
The ACPL-C87B-000E and ACPL-C78A-060E are Broadcom isolation amplifiers designed for current and voltage sensing in motor control, power conversion, and industrial applications. Both provide galvanic isolation between the high-voltage and low-voltage sides of a system.
What is the key difference in isolation voltage between the ACPL-C87B-000E and ACPL-C78A-060E?
The ACPL-C87B-000E is rated for a higher isolation voltage than the ACPL-C78A-060E. The ACPL-C87B-000E offers a reinforced insulation rating of 5000 Vrms for 1 minute per UL 1577, while the ACPL-C78A-060E provides 3750 Vrms for 1 minute per UL 1577.
Do the ACPL-C87B-000E and ACPL-C78A-060E have the same input voltage range?
No. The ACPL-C87B-000E has a nominal input voltage range of ±200 mV, while the ACPL-C78A-060E has a nominal input voltage range of ±320 mV. This difference affects the shunt resistor selection and signal scaling in the application circuit.
Are the ACPL-C87B-000E and ACPL-C78A-060E pin-compatible?
Yes, both devices are offered in the same 8-pin surface-mount package (DIP-8 or SO-8 depending on variant) with the same pinout. However, pin compatibility alone does not guarantee functional equivalence; electrical specifications must be verified for the target design.
What is the gain tolerance of the ACPL-C87B-000E compared to the ACPL-C78A-060E?
The ACPL-C87B-000E specifies a tighter gain tolerance of ±1% at 25°C, while the ACPL-C78A-060E specifies a gain tolerance of ±3% at 25°C. The tighter tolerance of the ACPL-C87B-000E can reduce or eliminate the need for external calibration in precision applications.
Can the ACPL-C87B-000E and ACPL-C78A-060E operate from the same supply voltage?
Yes, both devices operate from a single 5 V supply on the output side and a 5 V supply on the input side. However, the ACPL-C87B-000E has a wider recommended operating supply voltage range of 4.5 V to 5.5 V, while the ACPL-C78A-060E is specified for 4.5 V to 5.5 V as well. Always confirm the exact supply requirements from the respective datasheets.
Which part is better suited for high-precision current sensing?
The ACPL-C87B-000E is generally better suited for high-precision current sensing due to its tighter gain tolerance (±1% vs ±3%), lower offset drift, and higher isolation voltage rating. The ACPL-C78A-060E is more appropriate for applications where a wider input range (±320 mV) is required and moderate accuracy is acceptable.
Are the ACPL-C87B-000E and ACPL-C78A-060E certified to the same safety standards?
Both devices carry common safety certifications including UL 1577, CSA, and IEC/EN/DIN EN 60747-5-5. However, the ACPL-C87B-000E achieves a higher reinforced insulation rating (5000 Vrms) compared to the ACPL-C78A-060E (3750 Vrms). Designers must verify that the specific certification and isolation rating meet the end-equipment safety requirements.
What is the bandwidth of the ACPL-C87B-000E versus the ACPL-C78A-060E?
The ACPL-C87B-000E has a nominal bandwidth of 100 kHz, while the ACPL-C78A-060E has a nominal bandwidth of 100 kHz as well. Both are suitable for motor phase current sensing and general industrial signal isolation, but the ACPL-C87B-000E offers better accuracy for the same bandwidth.