Part A
ADE7868AACPZ
Компания Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3374 ПКС
- Package
- LFCSP-40
- Series
- PMIC - Измерение энергии
Replacement verdict
Compatible functional replacement candidate
The ADE7868AACPZ is a viable functional replacement candidate for the ADE7880ACPZ-RL in polyphase energy metering designs, sharing the same LFCSP-40 package, SPI/I2C host interface, and 3.3 V single-supply architecture. Designers must validate the reduced on-chip memory, lower maximum sample rate, and narrower temperature range against their specific application requirements before committing to a drop-in substitution.
Package Type
High match
Host Interface
High match
On-Chip Memory
Validation required
Operating Temperature Range
Validation required
Parts at a glance
Part B
ADE7880ACPZ-RL
Компания Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 1383 ПКС
- Package
- LFCSP-40
- Series
- PMIC - Измерение энергии
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | ADE7880ACPZ-RL | ADE7868AACPZ | Why it matters |
|---|---|---|---|
| Number of Voltage Channels | 3 | 3 | Both are three-phase energy metering ICs, so the voltage channel count is functionally equivalent. |
| Number of Current Channels | 3 | 3 | Both support three current inputs, enabling three-phase current measurement in either device. |
| ADC Resolution | 24-bit | 24-bit | High-resolution ADCs are essential for accurate energy and power measurement; both offer the same resolution. |
| On-Chip Harmonic Analysis | Yes (fundamental and harmonic components) | No | The ADE7880 provides harmonic/fundamental separation, which the ADE7868A lacks, affecting power quality analysis capability. |
| Supply Voltage | 3.3 V | 3.3 V | Both operate from a 3.3 V supply, so power rail design is compatible between the two parts. |
| Package | 40-Lead LFCSP | 40-Lead LFCSP | Identical package and pin count simplify PCB layout substitution between the two devices. |
| Communication Interface | SPI and I2C | SPI and I2C | Both support SPI and I2C, allowing the same host interface to be reused across designs. |
| On-Chip Energy Registers | Active, reactive, and apparent energy | Active, reactive, and apparent energy | Both compute all three energy types, so metering functionality is comparable for billing applications. |
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 | ADE7868AACPZ | ADE7880ACPZ-RL |
|---|---|---|
| Part Status | Active | Active |
| Input Impedance | 400kOhm | 490kOhm |
| Measurement Error | 0.2% | - |
| Voltage - I / O High | 2V, 2.4V | 2.4V, 3V |
| Voltage - I / O Low | 0.4V, 0.8V | 0.4V, 0.8V |
| Supply Current | 20mA | 25mA |
| Voltage - Supply | 2.8 V ~ 3.7 V | 2.97 V ~ 3.63 V |
| Meter Type | 3 Phase | 3 Phase |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the primary functional differences between the ADE7880ACPZ-RL and the ADE7868AACPZ?
The ADE7880ACPZ-RL is a high-accuracy, 3-phase energy metering IC with harmonic analysis capabilities, supporting active, reactive, and apparent energy measurements, as well as total harmonic distortion (THD) and harmonic content calculations. The ADE7868AACPZ is a 3-phase energy metering IC that provides active, reactive, and apparent energy measurements along with rms and power factor readings, but it does not include the harmonic analysis engine found in the ADE7880. Both devices integrate three ADCs and a digital signal processor for metering calculations.
Are the ADE7880ACPZ-RL and ADE7868AACPZ pin-compatible?
Both devices are offered in a 40-lead LFCSP (CP-40) package with the same 6 mm × 6 mm body size and 0.5 mm pitch. However, pin function assignments differ between the two datasheets, so a direct drop-in replacement on an existing PCB is not guaranteed. Designers must compare the pin configurations in the respective Analog Devices datasheets before considering a layout-compatible substitution.
Do both devices support the same serial communication interfaces?
Yes. Both the ADE7880ACPZ-RL and the ADE7868AACPZ provide an SPI-compatible serial port and an I²C-compatible interface for register access and configuration. Both also include a dedicated high-speed interface (HSD) for accessing waveform and harmonic data, though the ADE7880 uses this path more extensively for harmonic analysis output.
Which device should be selected for applications requiring harmonic analysis?
The ADE7880ACPZ-RL should be selected when harmonic analysis is required, as it includes an on-chip harmonic engine that computes harmonic magnitudes and THD for voltage and current channels. The ADE7868AACPZ does not provide this harmonic analysis capability and is intended for applications that only require fundamental energy, rms, and power factor measurements.
Are the ADE7880ACPZ-RL and ADE7868AACPZ supplied in the same reel packaging?
Both part numbers use the "-RL" reel suffix convention from Analog Devices, indicating tape-and-reel packaging for automated assembly. The ADE7880ACPZ-RL and ADE7868AACPZ are both delivered in 40-lead LFCSP tape-and-reel format, though the exact reel quantity should be confirmed on the Analog Devices datasheet or distributor listing for each orderable part number.
Do both devices operate from the same supply voltage range?
Both the ADE7880ACPZ-RL and the ADE7868AACPZ operate from a single 3.3 V supply for the analog and digital sections, with an on-chip LDO regulator that allows operation from a 5 V supply as well. The precise minimum and maximum supply limits, along with the separate digital I/O supply (VDD) range, should be verified in the respective Analog Devices datasheets before finalizing the power design.
Can the ADE7868AACPZ be used as a lower-cost alternative to the ADE7880ACPZ-RL?
The ADE7868AACPZ can serve as an alternative when harmonic analysis is not needed, since it provides the core active, reactive, and apparent energy measurements plus rms and power factor data. However, because pin functions and register maps differ, firmware and PCB layout changes are typically required. The substitution should only be made after validating all functional and accuracy requirements against the ADE7868AACPZ datasheet.