Part A
ACPL-C790-500E
Broadcom Ltd
- Lifecycle
- Active
- Stock
- 5096 PCS
- Package
- SSO-8
- Series
- Amplificateurs linéaires - instruments, amplificateurs opérationnels, amplificateurs tampons
Replacement verdict
Compatible functional replacement candidate
The ACPL-C790-500E and ACPL-C78A-560E are both isolated sigma-delta modulator optocouplers from Broadcom in the same SO-8 stretched package, sharing identical isolation voltage, supply voltage, and operating temperature ranges. The ACPL-C790-500E offers a higher input offset voltage specification and tighter gain tolerance, making it a viable functional replacement candidate for the ACPL-C78A-560E in most isolated current-sensing applications, provided the system gain calibration accounts for the offset voltage difference.
Input Offset Voltage
Validation required
Isolation Voltage
High match
Package Type
High match
Operating Temperature Range
High match
Parts at a glance
Part B
ACPL-C78A-560E
Broadcom Ltd
- Lifecycle
- Active
- Stock
- 7750 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-C790-500E | ACPL-C78A-560E | Why it matters |
|---|---|---|---|
| Manufacturer | Broadcom | Broadcom | Confirms both parts come from the same supplier, simplifying sourcing and qualification. |
| Amplifier Type | Isolation Amplifier | Isolation Amplifier | Both are isolation amplifiers, so they serve the same core signal-conditioning function. |
| Input Offset Voltage | ±0.6 mV (typ) | ±0.3 mV (typ) | Lower offset improves measurement accuracy in current-sensing and feedback loops. |
| Gain Tolerance | ±1% | ±0.5% | Tighter gain tolerance reduces calibration effort and improves system-level accuracy. |
| Isolation Voltage | 5000 Vrms | 5000 Vrms | Determines the safety barrier rating for high-voltage isolation applications. |
| Bandwidth | 200 kHz | 100 kHz | Higher bandwidth supports faster control loops and transient response. |
| Supply Voltage | 4.5 V to 5.5 V | 4.5 V to 5.5 V | Matching supply ranges allows drop-in compatibility with the same power rail. |
| Operating Temperature Range | -40°C to +105°C | -40°C to +105°C | Identical temperature ratings ensure both parts suit the same industrial environments. |
| Package / Mounting | Surface Mount, 8-SOIC | Surface Mount, 8-SOIC | Same package and mounting style enable direct PCB footprint compatibility. |
| Output Type | Differential | Differential | Differential output improves noise immunity and matches ADC input requirements. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ACPL-C790-500E | 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 | 200 kHz | 100 kHz |
| Voltage - Input Offset | 600 µV | 300 µV |
| Supply Current | 13mA | 11mA |
| Current - Output / Channel | 11 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 ~ 105°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
| Current - Input Bias | 100 nA | - |
Frequently asked questions
What are the primary differences between the ACPL-C790-500E and the ACPL-C78A-560E?
The ACPL-C790-500E is a ±0.5% gain tolerance isolation amplifier optimized for current sensing, while the ACPL-C78A-560E is a ±1% gain tolerance isolation amplifier. Both are optically isolated amplifiers from Broadcom in a 5-pin SO-8 package, but they differ in gain tolerance, input offset voltage, and specified operating temperature range.
Are the ACPL-C790-500E and ACPL-C78A-560E pin-to-pin compatible?
Yes. Both devices are offered in the same 5-pin SO-8 (Stretched SO-8) package with identical pin functions: VDD1, VIN+, VIN-, GND1, VDD2, VOUT+, VOUT-, and GND2. This allows PCB layout compatibility when electrical specifications are validated for the target design.
What is the gain tolerance specification for each device?
The ACPL-C790-500E has a specified gain tolerance of ±0.5% at 25°C. The ACPL-C78A-560E has a specified gain tolerance of ±1% at 25°C. The tighter gain tolerance of the ACPL-C790-500E makes it preferable for applications requiring higher measurement accuracy.
What is the input offset voltage of the ACPL-C790-500E and ACPL-C78A-560E?
The ACPL-C790-500E specifies an input offset voltage of ±0.3 mV (typical) with a maximum of ±1.5 mV. The ACPL-C78A-560E specifies an input offset voltage of ±0.3 mV (typical) with a maximum of ±3 mV. The ACPL-C790-500E offers a tighter maximum offset specification.
What is the specified operating temperature range for each device?
The ACPL-C790-500E is specified for operation from –40°C to +105°C. The ACPL-C78A-560E is specified for operation from –40°C to +85°C. The ACPL-C790-500E supports a wider industrial temperature range.
What is the isolation voltage rating for these isolation amplifiers?
Both the ACPL-C790-500E and ACPL-C78A-560E are rated for 5,000 Vrms (1 minute) isolation voltage per UL 1577. They also carry IEC/EN/DIN EN 60747-5-5 approval with a working voltage of 1,140 Vpeak and a transient overvoltage of 8,000 Vpeak.
What is the gain of the ACPL-C790-500E and ACPL-C78A-560E?
Both devices have a nominal gain of 8.0. The ACPL-C790-500E specifies gain tolerance of ±0.5%, while the ACPL-C78A-560E specifies gain tolerance of ±1%. The gain is defined as the differential output voltage divided by the differential input voltage.
What is the bandwidth of the ACPL-C790-500E and ACPL-C78A-560E?
Both devices specify a –3 dB bandwidth of 200 kHz (typical). This makes them suitable for motor phase current sensing, inverter current sensing, and other applications requiring moderate bandwidth isolation amplification.
What is the common-mode transient immunity (CMTI) of these devices?
Both the ACPL-C790-500E and ACPL-C78A-560E specify a common-mode transient immunity of 15 kV/µs (minimum) at VCM = 1,000 V. This ensures reliable operation in high-noise environments such as motor drive and power inverter systems.