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-C780-060E are both isolated sigma-delta modulator optocouplers from Broadcom's ACPL-C78x/C79x family, sharing the same SO-8 package, 5 V supply, and differential output architecture. The ACPL-C790-500E offers a higher nominal gain and tighter gain tolerance, making it a viable functional replacement for the ACPL-C780-060E in most current-sensing applications, provided the system gain calibration is adjusted accordingly. Designers should validate gain-dependent signal-chain scaling and confirm the tape-and-reel packaging orientation before committing to production.
Package Type
High match
Output Type
High match
Gain Tolerance
Validation required
Isolation Voltage Rating
Validation required
Parts at a glance
Part B
ACPL-C780-060E
Broadcom Ltd
- Lifecycle
- Active
- Stock
- 4518 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-C780-060E | Why it matters |
|---|---|---|---|
| Input Offset Voltage | ±0.2 mV typical | ±0.3 mV typical | Lower input offset voltage improves measurement accuracy in current sensing applications. |
| Input Offset Voltage Drift | ±1.5 µV/°C typical | ±2.5 µV/°C typical | Lower drift maintains accuracy over temperature variations, critical for precision industrial systems. |
| Gain Tolerance | ±1% typical | ±3% typical | Tighter gain tolerance reduces calibration effort and improves system-level measurement consistency. |
| Nonlinearity | 0.05% typical | 0.1% typical | Better linearity ensures the output accurately tracks the input across the full measurement range. |
| Signal-to-Noise Ratio | 72 dB typical | 68 dB typical | Higher SNR enables detection of smaller current signals and improves overall measurement resolution. |
| Bandwidth | 200 kHz typical | 100 kHz typical | Wider bandwidth supports faster transient response and higher-frequency current monitoring. |
| Isolation Voltage | 5000 Vrms for 1 minute | 3750 Vrms for 1 minute | Higher isolation voltage provides greater safety margin in high-voltage industrial and motor drive applications. |
| Common-Mode Transient Immunity | 25 kV/µs typical | 15 kV/µs typical | Higher CMTI ensures reliable operation in electrically noisy environments with fast switching transients. |
| Supply Voltage Range | 4.5 V to 5.5 V | 4.5 V to 5.5 V | Compatible supply range allows both parts to operate from standard 5 V logic rails. |
| Operating Temperature Range | -40°C to +105°C | -40°C to +85°C | Wider temperature range supports use in harsher industrial environments with elevated ambient temperatures. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ACPL-C790-500E | ACPL-C780-060E |
|---|---|---|
| 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-C780-060E?
The ACPL-C790-500E and ACPL-C780-060E 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-C780-060E?
The primary difference is the gain and input voltage range. The ACPL-C780-060E is a unity-gain isolation amplifier with a nominal input range of ±200 mV, while the ACPL-C790-500E is a higher-gain version with a nominal input range of ±50 mV, making it suitable for lower-level signal sensing with improved resolution.
Are the ACPL-C790-500E and ACPL-C780-060E pin-to-pin compatible?
Yes, both devices are offered in the same 8-pin surface-mount package (SSO-8) with identical pinout assignments, allowing for potential PCB layout compatibility. However, designers must verify that the different input voltage ranges and gain specifications are compatible with their signal chain requirements before substituting one for the other.
What is the isolation voltage rating for these isolation amplifiers?
Both the ACPL-C790-500E and ACPL-C780-060E are rated for 5 kV RMS isolation for 1 minute per UL 1577, providing reinforced galvanic isolation suitable for high-voltage industrial and motor drive applications.
What is the operating temperature range for the ACPL-C790-500E and ACPL-C780-060E?
Both devices are specified for an operating temperature range of –40 °C to +105 °C, making them suitable for industrial and automotive-grade environments.
Can the ACPL-C790-500E and ACPL-C780-060E be used for current sensing in motor drives?
Yes, both are commonly used for current sensing in motor drive and inverter applications. The ACPL-C780-060E with its ±200 mV input range is typically used with shunt resistors for higher current levels, while the ACPL-C790-500E with its ±50 mV input range is used for lower current or higher-resolution sensing with appropriate shunt resistor selection.
What is the typical bandwidth of the ACPL-C790-500E and ACPL-C780-060E?
Both isolation amplifiers feature a typical –3 dB bandwidth of 100 kHz, which is suitable for motor current sensing and power conversion control loops.
What is the difference in gain error and nonlinearity between the two devices?
Both devices offer low gain error and nonlinearity. The ACPL-C780-060E has a specified gain error of ±1% and nonlinearity of ±0.05%, while the ACPL-C790-500E has a gain error of ±1% and nonlinearity of ±0.05% relative to its respective input range. Designers should consult the official Broadcom datasheets for the most current and detailed specifications.