Part A
ACPL-C79B-000E
Broadcom Ltd
- Lifecycle
- Active
- Stock
- 5529 PCS
- Package
- SSO-8
- Series
- Amplificateurs linéaires - instruments, amplificateurs opérationnels, amplificateurs tampons
Replacement verdict
Compatible functional replacement candidate
The ACPL-C79B-000E is a viable functional replacement candidate for the ACPL-C784-500E, sharing the same isolation amplifier architecture, input range, and output configuration. Designers should validate the tighter gain tolerance and reduced operating temperature range against their specific application requirements before committing to a drop-in substitution.
Output Type
High match
Input Signal Range
High match
Gain Tolerance
Validation required
Operating Temperature Range
Validation required
Parts at a glance
Part B
ACPL-C784-500E
Broadcom Ltd
- Lifecycle
- Active
- Stock
- 6380 PCS
- Package
- SSO-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-C784-500E | ACPL-C79B-000E | 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 (Max) | ±0.3 mV | ±0.3 mV | Low offset voltage improves measurement accuracy in current-sensing applications. |
| Gain Tolerance | ±1% | ±1% | Tight gain tolerance ensures consistent signal scaling between parts. |
| Isolation Voltage (VISO) | 5000 Vrms | 5000 Vrms | High isolation voltage is critical for safety and noise immunity in high-voltage systems. |
| Bandwidth | 100 kHz | 100 kHz | Bandwidth determines the maximum signal frequency the amplifier can accurately process. |
| Supply Voltage Range | 4.5 V to 5.5 V | 4.5 V to 5.5 V | Compatible supply range allows direct replacement without power rail redesign. |
| Operating Temperature Range | -40°C to +105°C | -40°C to +105°C | Industrial temperature range ensures reliable operation in harsh environments. |
| Package / Mounting | Surface Mount (SO-8) | Through-Hole (DIP-8) | Different mounting styles affect PCB layout and assembly compatibility. |
| Packaging Option | Tape & Reel | Tube | Packaging affects handling and compatibility with automated assembly lines. |
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-C79B-000E | ACPL-C784-500E |
|---|---|---|
| Part Status | Active | Active |
| Amplifier Type | Isolation | Isolation |
| Number of Circuits | 1 | 1 |
| Output Type | Differential | Differential |
| -3 dB Bandwidth | 200 kHz | 100 kHz |
| Current - Input Bias | 100 nA | - |
| 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 |
Frequently asked questions
What are the primary differences between the ACPL-C784-500E and the ACPL-C79B-000E?
The ACPL-C784-500E is a ±0.5% tolerance isolated amplifier with a ±50 mV input range, while the ACPL-C79B-000E is a ±0.5% tolerance isolated amplifier with a ±200 mV input range. Both are optically isolated amplifiers in a 5-pin SO-8 package, but they differ in input voltage range, gain, and specified operating temperature range.
Are the ACPL-C784-500E and ACPL-C79B-000E pin-compatible?
Yes. Both devices are offered in the same 5-pin surface-mount SO-8 package with identical pin functions: VDD1, VIN+, VIN-, GND1, VDD2, VOUT+, VOUT-, and GND2. This allows for a common PCB footprint, but electrical differences must be validated before substitution.
What is the input voltage range of each device?
The ACPL-C784-500E has a nominal input voltage range of ±50 mV. The ACPL-C79B-000E has a nominal input voltage range of ±200 mV. These ranges determine the maximum differential signal that can be accurately amplified without clipping.
What are the gain and gain tolerance specifications for these isolated amplifiers?
The ACPL-C784-500E provides a fixed gain of 8.2 V/V with a tolerance of ±0.5%. The ACPL-C79B-000E provides a fixed gain of 8.2 V/V with a tolerance of ±0.5%. Despite the different input ranges, both devices have the same nominal gain, resulting in different output voltage swings for a given input.
What is the specified operating temperature range for each part?
The ACPL-C784-500E is specified for operation from -40°C to +105°C. The ACPL-C79B-000E is specified for operation from -40°C to +105°C. Both devices share the same industrial temperature range.
What isolation voltage and safety certifications apply to these components?
Both the ACPL-C784-500E and ACPL-C79B-000E are rated for 5 kV rms isolation for 1 minute per UL 1577. They also carry IEC/EN/DIN EN 60747-5-5 approval for reinforced insulation with a working voltage of 1,140 V peak. These ratings are identical for both parts.
Can the ACPL-C784-500E and ACPL-C79B-000E be used interchangeably in a design?
They are not directly interchangeable without circuit redesign. The ACPL-C784-500E accepts a ±50 mV input, while the ACPL-C79B-000E accepts a ±200 mV input. Using one in place of the other will result in a different output voltage for the same input signal, potentially causing saturation or loss of resolution. The surrounding signal conditioning and shunt resistor values must be recalculated.
What are the typical applications for each device?
The ACPL-C784-500E is typically used for low-level signal isolation such as shunt-based current sensing in motor drives and power inverters where the shunt voltage is small. The ACPL-C79B-000E is used for higher-level signal isolation, such as DC bus voltage monitoring or current sensing with larger shunt voltages, where a wider input range is beneficial.