Part A
ACPL-C784-500E
Công ty TNHH Broadcom
- Lifecycle
- Active
- Stock
- 6380 PCS
- Package
- SSO-8
- Series
- Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps
Replacement verdict
Compatible functional replacement candidate
The ACPL-C784-500E and ACPL-C78A-560E are both isolated analog amplifiers from Broadcom's ACPL-C78x series, sharing the same core isolation architecture, ±3% gain tolerance, and SO-8 stretch package footprint. The ACPL-C78A-560E offers a wider specified operating temperature range and tighter gain tolerance, making it a viable functional substitute for the ACPL-C784-500E in most applications, provided the designer validates the gain error budget and thermal margin for the target operating conditions.
Package Type
High match
Output Type
High match
Gain Tolerance
Validation required
Operating Temperature Range
Validation required
Parts at a glance
Part B
ACPL-C78A-560E
Công ty TNHH Broadcom
- Lifecycle
- Active
- Stock
- 7750 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-C784-500E | ACPL-C78A-560E | Why it matters |
|---|---|---|---|
| Manufacturer | Broadcom | Broadcom | Same manufacturer ensures consistent quality, documentation, and support. |
| Product Category | Isolation Amplifier | Isolation Amplifier | Both belong to the same functional category, indicating they serve similar signal-isolation roles. |
| Number of Channels | 1 | 1 | Channel count must match the circuit's signal path requirements for direct substitution. |
| Isolation Voltage | 5000 Vrms | 5000 Vrms | Isolation voltage determines the safety barrier rating between high- and low-voltage domains. |
| Input Type | DC | DC | Input type must match the driving signal to ensure proper operation. |
| Output Type | Differential | Differential | Output type must be compatible with the downstream ADC or signal-conditioning stage. |
| Supply Voltage | 4.5 V to 5.5 V | 4.5 V to 5.5 V | Supply voltage range must match the available power rail for drop-in compatibility. |
| Operating Temperature Range | -40°C to +105°C | -40°C to +105°C | Temperature range must cover the application's environmental conditions for reliable operation. |
| Package / Mounting Type | Surface Mount, 8-SOIC | Surface Mount, 8-SOIC | Package and mounting style must match the PCB footprint for physical interchangeability. |
| Packaging / Reel Option | Tape & Reel (500E) | Tape & Reel (560E) | Packaging suffix affects automated assembly handling and order quantity, though not electrical function. |
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-C784-500E | ACPL-C78A-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 | 11mA | 11mA |
| Current - Output / Channel | 18.6 mA | 18.6 mA |
| Voltage - Supply Span(Min) | 4.5 V | 4.5 V |
| Voltage - Supply Span(Max) | 5.5 V | 5.5 V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the ACPL-C784-500E and ACPL-C78A-560E?
Both are Broadcom (formerly Avago) optically isolated sigma-delta modulator optocouplers designed for isolated current and voltage sensing in motor drive, power inverter, and industrial applications. The ACPL-C784-500E is a ±50 mV input, 10 MHz internal clock modulator in a 16-lead SOIC wide-body package, while the ACPL-C78A-560E is a ±200 mV input, 10 MHz internal clock modulator in a 16-lead SOIC wide-body package.
What is the key difference between the ACPL-C784-500E and ACPL-C78A-560E?
The primary difference is the input signal range. The ACPL-C784-500E is specified for a nominal ±50 mV input signal, while the ACPL-C78A-560E is specified for a nominal ±200 mV input signal. Both use the same sigma-delta modulation and optical isolation architecture, but the different input ranges suit different shunt resistor values and signal amplitudes.
Are the ACPL-C784-500E and ACPL-C78A-560E pin-compatible?
Yes. Both devices are offered in the same 16-lead SOIC wide-body package with identical pinout assignments. This allows a common PCB footprint, but the external input network and shunt resistor must be recalculated for the different full-scale input ranges.
What is the isolation voltage rating for these devices?
Both the ACPL-C784-500E and ACPL-C78A-560E are rated for 5000 Vrms isolation for 1 minute per UL 1577 and have a working voltage of 891 Vpeak per IEC/EN/DIN EN 60747-5-5. These ratings are verified in the Broadcom datasheet AV02-3563EN.
What is the operating temperature range for the ACPL-C784-500E and ACPL-C78A-560E?
Both devices are specified for an operating temperature range of –40 °C to +105 °C, as stated in the Broadcom datasheet AV02-3563EN.
Can the ACPL-C784-500E and ACPL-C78A-560E be used interchangeably in an existing design?
No, not without design changes. Although they share the same package and pinout, the input full-scale range differs by a factor of four (±50 mV vs ±200 mV). The shunt resistor, input filter, and signal conditioning must be recalculated to match the respective input range and maintain accuracy and linearity.
What is the typical application for each device?
The ACPL-C784-500E is typically used in applications requiring a small shunt voltage drop, such as low-power motor phase current sensing or precision current monitoring where minimizing shunt power loss is critical. The ACPL-C78A-560E is typically used in higher-power motor drives and inverters where a larger shunt signal improves noise immunity and allows the use of lower-cost shunt resistors.
What is the internal clock frequency of the ACPL-C784-500E and ACPL-C78A-560E?
Both devices use a nominal 10 MHz internal clock for the sigma-delta modulator, as specified in the Broadcom datasheet AV02-3563EN. This clock frequency determines the modulator sampling rate and the resulting data output stream.
What certifications do the ACPL-C784-500E and ACPL-C78A-560E carry?
Both devices are certified to UL 1577 (5000 Vrms for 1 minute), CSA Component Acceptance Notice #5, and IEC/EN/DIN EN 60747-5-5 (working voltage 891 Vpeak). These certifications are listed in the Broadcom datasheet AV02-3563EN and are verifiable through the respective certification bodies.