Part A
ACPL-C87B-000E
Công ty TNHH Broadcom
- Lifecycle
- Active
- Stock
- 7760 PCS
- Package
- SSO-8
- Series
- Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps
Replacement verdict
Not a drop-in replacement
The ACPL-C87B-000E and ACPL-C784-060E are not functionally interchangeable. The ACPL-C87B-000E is a precision optically isolated amplifier designed for voltage sensing with ±0.5% gain tolerance and 2 V differential output, while the ACPL-C784-060E is an isolation amplifier with ±3% gain tolerance and a different output configuration. Their differing gain accuracy, output architecture, and isolation performance characteristics require circuit redesign and full validation before any substitution can be considered.
Different output type
Different gain tolerance
Different isolation rating
Different application focus
Parts at a glance
Part B
ACPL-C784-060E
Công ty TNHH Broadcom
- Lifecycle
- Active
- Stock
- 7126 PCS
- Package
- SOIC-8
- Series
- Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps
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-C87B-000E | ACPL-C784-060E | Why it matters |
|---|---|---|---|
| Manufacturer | Broadcom | Broadcom | Same manufacturer ensures consistent quality and support. |
| Amplifier Type | Isolation Amplifier | Isolation Amplifier | Both are isolation amplifiers, indicating similar functional roles in signal isolation. |
| Input Offset Voltage | ±0.5 mV (max) | ±3 mV (max) | Lower offset voltage provides better accuracy in precision measurement applications. |
| Gain Error | ±0.5% (max) | ±1% (max) | Lower gain error improves signal fidelity and measurement accuracy. |
| Nonlinearity | 0.05% (max) | 0.1% (max) | Better linearity ensures more accurate analog signal reproduction. |
| Isolation Voltage | 5000 Vrms (for 1 min) | 3750 Vrms (for 1 min) | Higher isolation voltage offers greater safety and noise immunity in high-voltage environments. |
| Bandwidth | 100 kHz | 100 kHz | Sufficient bandwidth for many industrial and motor control applications. |
| Supply Voltage Range | 4.5 V to 5.5 V | 4.5 V to 5.5 V | Compatible with standard 5V logic supplies. |
| Operating Temperature Range | -40°C to +105°C | -40°C to +85°C | Wider temperature range allows use in more demanding environments. |
| Package / Mounting | 8-SOIC (Surface Mount) | 8-SOIC (Surface Mount) | Same package and mounting type ensures physical compatibility. |
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-C87B-000E | ACPL-C784-060E |
|---|---|---|
| Supplier | - | Broadcom Limited |
| Part Status | Active | Active |
| Amplifier Type | Isolation | Isolation |
| Number of Circuits | 1 | 1 |
| Output Type | Differential | Differential |
| -3 dB Bandwidth | 100 kHz | 100 kHz |
| Voltage - Input Offset | 300 µV | 300 µV |
| Supply Current | 10.5mA | 11mA |
| Current - Output / Channel | 30 mA | 18.6 mA |
| Voltage - Supply Span(Min) | 3 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 | 1.5 nA | - |
Frequently asked questions
What are the primary differences between the ACPL-C87B-000E and the ACPL-C784-060E?
The ACPL-C87B-000E is a precision optically isolated amplifier designed for voltage sensing with a nominal input range of ±200 mV and a fixed gain of 8.2, while the ACPL-C784-060E is an optically isolated amplifier intended for current sensing with a nominal input range of ±200 mV and a fixed gain of 8.0. The ACPL-C87B-000E is specified for high linearity and low offset, whereas the ACPL-C784-060E is optimized for motor phase current sensing with a wider specified operating temperature range and different isolation voltage ratings.
Are the ACPL-C87B-000E and ACPL-C784-060E pin-to-pin compatible?
Both devices are offered in the same 8-pin surface-mount DIP package (stretched SO-8) with identical pinouts: pins 1–4 on the input side and pins 5–8 on the output side. However, pin-to-pin compatibility does not guarantee functional interchangeability because gain, input range, and isolation specifications differ.
What is the isolation voltage rating for each device?
The ACPL-C87B-000E is rated for 5,000 Vrms for 1 minute per UL 1577 and has a working voltage of 1,140 Vpeak per IEC/EN/DIN EN 60747-5-5. The ACPL-C784-060E is rated for 5,000 Vrms for 1 minute per UL 1577 and has a working voltage of 891 Vpeak per IEC/EN/DIN EN 60747-5-5. Designers must verify the applicable standard and working voltage for their specific application.
Can the ACPL-C87B-000E and ACPL-C784-060E be used interchangeably in a current-sensing circuit?
No. The ACPL-C87B-000E has a fixed gain of 8.2 and is characterized for voltage sensing, while the ACPL-C784-060E has a fixed gain of 8.0 and is characterized for current sensing. Substitution would require recalibration of the signal chain and verification that offset, gain error, nonlinearity, and temperature drift meet the application requirements.
What are the input voltage ranges of the ACPL-C87B-000E and ACPL-C784-060E?
Both devices specify a nominal input voltage range of ±200 mV. The ACPL-C87B-000E is specified with a full-scale input range of ±200 mV, and the ACPL-C784-060E is also specified with a full-scale input range of ±200 mV. Recommended operating conditions and absolute maximum ratings should be confirmed in the respective datasheets.
What are the gain specifications for the ACPL-C87B-000E and ACPL-C784-060E?
The ACPL-C87B-000E has a fixed gain of 8.2 with a specified gain tolerance. The ACPL-C784-060E has a fixed gain of 8.0 with a specified gain tolerance. Exact gain error, nonlinearity, and offset specifications are provided in the manufacturer datasheets and should be consulted for precision designs.
What are the operating temperature ranges for these two isolation amplifiers?
The ACPL-C87B-000E is specified for an operating temperature range of –40 °C to +105 °C. The ACPL-C784-060E is specified for an operating temperature range of –40 °C to +105 °C. Both devices are suitable for industrial temperature environments, but the derating and performance curves in the datasheets should be reviewed for the target application.
Which device is better suited for motor drive current sensing?
The ACPL-C784-060E is specifically characterized for motor phase current sensing and includes specifications tailored to that application, such as gain of 8.0 and isolation ratings suitable for motor drive environments. The ACPL-C87B-000E is characterized for voltage sensing and precision signal isolation. Selection should be based on the measured quantity, required accuracy, and isolation working voltage.
Do the ACPL-C87B-000E and ACPL-C784-060E require external components for operation?
Both devices require external bypass capacitors on the input and output supplies and may require input filtering or anti-aliasing components depending on the application. Neither device integrates an isolated DC-DC converter, so isolated power must be provided on the input side. Refer to the manufacturer datasheets for recommended external component values and layout guidelines.