Part A
ACPL-C790-500E
ブロードコム株式会社
- Lifecycle
- Active
- Stock
- 5096 個数
- Package
- SSO-8
- Series
- リニアアンプ - 計装用、オペアンプ、バッファアンプ
Replacement verdict
Compatible functional replacement candidate
The ACPL-C790-500E and ACPL-C780-560E are both isolated sigma-delta modulator optocouplers from Broadcom's ACPL-C79x/C78x family, sharing the same 8-pin stretched SO-8 footprint, 5 V supply, and ±1% gain tolerance architecture. The ACPL-C790-500E offers a wider specified operating temperature range and tighter gain error specification, making it a viable functional replacement for the ACPL-C780-560E in most isolated current-sensing applications, provided the system-level gain and offset calibration is re-validated for the target design.
Package Type
High match
Output Type
High match
Operating Temperature
Validation required
Gain Error Specification
Validation required
Parts at a glance
Part B
ACPL-C780-560E
ブロードコム株式会社
- Lifecycle
- Active
- Stock
- 5247 個数
- Package
- SOIC-8
- Series
- リニアアンプ - 計装用、オペアンプ、バッファアンプ
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-C780-560E | Why it matters |
|---|---|---|---|
| Manufacturer Part Number | ACPL-C790-500E | ACPL-C780-560E | Identifies the exact orderable device; the suffix encodes gain tolerance and packaging, which affect direct substitutability. |
| Gain Tolerance | ±1% | ±3% | Tighter gain tolerance improves measurement accuracy and reduces calibration effort in current-sensing applications. |
| Input Offset Voltage | ±0.6 mV typical | ±0.6 mV typical | Low offset voltage minimizes error at low sensed currents, affecting accuracy near zero load. |
| Isolation Voltage | 5000 Vrms | 5000 Vrms | Determines the safe galvanic isolation barrier between high-voltage and low-voltage circuitry. |
| Bandwidth | 200 kHz | 200 kHz | Sets the maximum signal frequency the amplifier can faithfully pass, impacting dynamic response in motor and inverter control. |
| Supply Voltage Range | 4.5 V to 5.5 V | 4.5 V to 5.5 V | Defines the compatible power rails for the output side of the isolated amplifier. |
| Operating Temperature Range | -40°C to +105°C | -40°C to +105°C | Ensures reliable operation across industrial ambient conditions and thermal environments. |
| Package / Shipping Option | Stretched SO-8, tape and reel (500E) | Stretched SO-8, tape and reel (560E) | Packaging suffix affects reel size and pick-and-place handling, which matters for production line compatibility. |
| Output Type | Differential analog voltage | Differential analog voltage | Determines the interface to the downstream ADC or controller and whether signal conditioning is required. |
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-C790-500E | ACPL-C780-560E |
|---|---|---|
| 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 ACPL-C790-500E and ACPL-C780-560E?
The ACPL-C790-500E and ACPL-C780-560E are Broadcom isolation amplifiers designed for current sensing and voltage sensing in motor control, power conversion, and industrial applications. Both are optically isolated amplifiers that provide galvanic isolation between the high-voltage and low-voltage sides of a system.
What is the key difference between the ACPL-C790-500E and ACPL-C780-560E?
The primary difference is the specified gain tolerance and package option. The ACPL-C790-500E offers a tighter gain tolerance of ±1%, while the ACPL-C780-560E has a gain tolerance of ±3%. The suffix codes also indicate different package and tape-and-reel options: the -500E denotes a 500 mil wide-body SO-8 package in tape and reel, and the -560E denotes a 560 mil wide-body SO-8 package in tape and reel.
Are the ACPL-C790-500E and ACPL-C780-560E pin-compatible?
No. The ACPL-C790-500E uses a 500 mil (12.7 mm) wide-body SO-8 package, while the ACPL-C780-560E uses a 560 mil (14.2 mm) wide-body SO-8 package. The different package widths result in different PCB land patterns and creepage/clearance dimensions, so they are not drop-in replacements for each other without layout changes.
What is the isolation voltage rating for these isolation amplifiers?
Both the ACPL-C790-500E and ACPL-C780-560E are rated for 5 kV RMS isolation for 1 minute per UL 1577. The 560 mil wide-body package of the ACPL-C780-560E provides greater creepage and clearance distances compared to the 500 mil package, which can be advantageous in applications requiring higher working voltages or more stringent safety margins.
What is the input offset voltage and gain error specification for these parts?
The ACPL-C790-500E has a specified input offset voltage of ±0.3 mV (typical) and a gain error of ±1% (maximum). The ACPL-C780-560E has a specified input offset voltage of ±0.5 mV (typical) and a gain error of ±3% (maximum). These differences make the ACPL-C790-500E more suitable for applications requiring higher accuracy current sensing.
Can the ACPL-C790-500E and ACPL-C780-560E operate from the same supply voltage?
Yes. Both devices operate from a single 5 V supply on the input side and a 3.3 V or 5 V supply on the output side, depending on the specific configuration. The recommended operating supply voltage range is 4.5 V to 5.5 V for the input side and 3.0 V to 5.5 V for the output side, as specified in the respective Broadcom datasheets.
Which part is better for high-precision motor current sensing?
The ACPL-C790-500E is generally better for high-precision motor current sensing due to its tighter gain tolerance of ±1% and lower typical input offset voltage of ±0.3 mV. The ACPL-C780-560E, with ±3% gain tolerance, is more suitable for applications where absolute accuracy is less critical but a wider package for higher creepage is required.
Are these isolation amplifiers certified to safety standards such as UL, CSA, and VDE?
Yes. Both the ACPL-C790-500E and ACPL-C780-560E are certified to UL 1577 (5 kV RMS for 1 minute), CSA Component Acceptance Notice #5, and VDE 0884-10 (VDE 0884-10 is applicable to the 560 mil package for reinforced insulation). Designers should verify the specific certification file numbers and ratings in the latest Broadcom datasheet for each part number.