Part A
ACPL-796J-560E
Broadcom Ltd
- Lifecycle
- Active
- Stock
- 2522 PCS
- Package
- SOIC-16
- Series
- Amplificateurs linéaires - instruments, amplificateurs opérationnels, amplificateurs tampons
Replacement verdict
Compatible functional replacement candidate
The ACPL-C784-560E is a viable functional replacement candidate for the ACPL-796J-560E in isolated current-sensing applications, with matching isolation architecture, sigma-delta modulation topology, and SO-8 surface-mount footprint. Designers must validate the tighter gain tolerance, reduced operating temperature ceiling, and lower common-mode transient immunity against the target application's requirements before committing to a drop-in substitution.
Isolation Architecture
High match
Gain Tolerance
Validation required
Operating Temperature Range
Validation required
Common-Mode Transient Immunity
Validation required
Parts at a glance
Part B
ACPL-C784-560E
Broadcom Ltd
- Lifecycle
- Active
- Stock
- 9959 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-796J-560E | ACPL-C784-560E | Why it matters |
|---|---|---|---|
| Function / Type | Optically isolated sigma-delta modulator | Optically isolated analog isolation amplifier | These devices perform fundamentally different signal-conversion functions, so they are not direct functional substitutes in a circuit. |
| Output Signal Format | Digital bit-stream (1-bit sigma-delta) | Analog differential voltage | The output interface determines what downstream circuitry (digital filter vs. ADC) is required to process the signal. |
| Input Signal Range | ±200 mV (typical full-scale) | ±200 mV (typical full-scale) | Matching input range ensures the sensor or shunt signal is properly conditioned without additional attenuation or gain. |
| Isolation Voltage (UL) | 5000 Vrms for 1 minute | 5000 Vrms for 1 minute | Isolation rating is critical for safety and noise immunity in high-voltage industrial and motor-drive applications. |
| Supply Voltage (VDD1 / VDD2) | 5 V / 3.3 V or 5 V | 5 V / 5 V | Supply compatibility affects whether the part can interface directly with existing logic and analog rails on the board. |
| Operating Temperature Range | -40°C to +105°C | -40°C to +85°C | A wider temperature range allows use in harsher environments such as industrial motor control and automotive systems. |
| Package | 16-lead SOIC (wide body) | 8-lead SOIC (stretched body) | Package footprint and pin count must match the PCB layout for a drop-in replacement. |
| Data Rate / Bandwidth | Up to 20 MHz clock (sigma-delta) | 100 kHz bandwidth (typical) | Bandwidth determines the maximum signal frequency that can be accurately transmitted or measured. |
| Nonlinearity | ±0.05% (typical) | ±0.05% (typical) | Low nonlinearity ensures accurate signal reproduction, which is essential for precision current and voltage sensing. |
| Gain Error | ±1% (typical) | ±1% (typical) | Gain error directly affects measurement accuracy and may require calibration in the end application. |
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-796J-560E | ACPL-C784-560E |
|---|---|---|
| Supplier | - | Broadcom Limited |
| Part Status | Active | Active |
| Amplifier Type | Isolation | Isolation |
| Number of Circuits | 1 | 1 |
| Output Type | - | Differential |
| -3 dB Bandwidth | - | 100 kHz |
| Voltage - Input Offset | 3 mV | 300 µV |
| Supply Current | 14mA | 11mA |
| Current - Output / Channel | - | 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 | 500 nA | - |
Frequently asked questions
What are the primary differences between the ACPL-796J-560E and the ACPL-C784-560E?
The ACPL-796J-560E is a 16-bit isolated delta-sigma modulator with a 20 MHz external clock, while the ACPL-C784-560E is an isolation amplifier with an analog output. The ACPL-796J-560E provides a digital bitstream output for direct connection to a digital filter, whereas the ACPL-C784-560E provides a differential analog output with fixed gain. Both are optically isolated and available in the same 16-pin SOIC wide-body package (560E suffix).
Are the ACPL-796J-560E and ACPL-C784-560E pin-compatible?
No. Although both devices are offered in a 16-pin SOIC wide-body package, their pin functions differ. The ACPL-796J-560E uses pins for clock input, data output, and digital supply, while the ACPL-C784-560E uses pins for analog input, analog output, and associated supply and reference connections. They are not direct drop-in replacements for each other.
What is the input voltage range for the ACPL-C784-560E?
The ACPL-C784-560E is specified for a nominal input voltage range of ±200 mV, with a fixed gain of 8.2 V/V typical. The input is differential and intended for shunt-based current sensing applications. Exact limits and tolerances should be verified against the official Broadcom datasheet.
What clock frequency does the ACPL-796J-560E require?
The ACPL-796J-560E requires an external clock input, typically 20 MHz, to operate its delta-sigma modulator. The clock frequency directly affects the modulator sampling rate and the resulting data rate. The device does not contain an internal oscillator, so a stable external clock source must be provided.
Which device is better suited for motor phase current sensing?
The ACPL-C784-560E is commonly used for motor phase current sensing because it provides a differential analog output that can interface directly with an ADC or controller. The ACPL-796J-560E is also used in current sensing but requires a digital filter to reconstruct the analog signal from its bitstream output. The choice depends on whether the system architecture prefers an analog signal chain or a digital bitstream processed by an FPGA or DSP.
Do both devices provide galvanic isolation?
Yes. Both the ACPL-796J-560E and the ACPL-C784-560E are optically isolated components. They use Broadcom's optical isolation technology to provide galvanic isolation between the input and output sides. The specific isolation voltage rating and working voltage should be confirmed from the respective datasheets, as they may differ between the two models.
What is the operating temperature range for these components?
Both the ACPL-796J-560E and the ACPL-C784-560E are specified for an industrial operating temperature range of –40°C to +105°C. This range is typical for Broadcom isolation products in the ACPL series. Always verify the exact temperature grade from the official datasheet for the specific part number.
Can the ACPL-796J-560E and ACPL-C784-560E share the same PCB footprint?
No. Even though both devices use a 16-pin SOIC wide-body package, the pin assignments are different. The ACPL-796J-560E routes clock, data, and digital supplies on specific pins, while the ACPL-C784-560E routes analog input, output, and references on different pins. A single PCB layout cannot accommodate both devices without redesign.