Part A
ADE7858AACPZ
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 3515 個数
- Series
- 電源管理 (PMIC) - 電力計測
Replacement verdict
Compatible functional replacement candidate
The ADE7880ACPZ-RL is a higher-integration superset of the ADE7858AACPZ, sharing the same LFCSP-40 footprint, SPI/I2C host interface, and polyphase energy-metering architecture, while adding harmonic analysis and a wider feature set. It can serve as a functional replacement candidate where the additional harmonic-analysis capability and higher current-channel count are acceptable, but the differing supply-voltage range and register-level feature set require schematic and firmware validation before substitution.
Package and Pinout
High match
Host Interface
High match
Current Channel Count
Validation required
Supply Voltage Range
Not compatible
Parts at a glance
Part B
ADE7880ACPZ-RL
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 1383 個数
- Package
- LFCSP-40
- Series
- PMIC - 電力量計
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | ADE7858AACPZ | ADE7880ACPZ-RL | Why it matters |
|---|---|---|---|
| Number of Current Input Channels | 3 (phase currents) | 3 (phase currents) + 1 (neutral current) | The ADE7880 adds a dedicated neutral current channel, enabling tamper detection and neutral monitoring that the ADE7858A cannot perform. |
| Harmonic Analysis / THD Support | No harmonic/THD computation engine | Yes, full harmonic and THD computation | The ADE7880 includes an on-chip harmonic analysis engine for THD and harmonic content, which is essential for power quality monitoring and absent in the ADE7858A. |
| Fundamental and Harmonic Reactive/Active Energy | Total active/reactive energy only | Fundamental and harmonic active/reactive energy | The ADE7880 separates fundamental and harmonic energy components, enabling more detailed billing and analysis than the total-only measurement of the ADE7858A. |
| Zero-Crossing Detection Channels | Limited zero-crossing outputs | Zero-crossing on all current and voltage channels | More comprehensive zero-crossing detection in the ADE7880 supports advanced synchronization and measurement features not available on the ADE7858A. |
| On-Chip Temperature Sensor | No | Yes | The ADE7880 integrates a temperature sensor for on-chip thermal monitoring, which the ADE7858A lacks. |
| Package / Pin Count | 40-lead LFCSP | 40-lead LFCSP | Both share the same 40-lead LFCSP footprint, but the ADE7880 exposes additional functions on shared pins, so pin-level compatibility must be verified against the datasheet. |
| Supply Voltage Range | 2.97 V to 3.63 V | 2.97 V to 3.63 V | Identical supply requirements mean the same power rail design can be reused, simplifying substitution at the power level. |
| Communication Interface | SPI and I2C | SPI and I2C | Both support the same serial interfaces, so host-side firmware communication layers can be reused across the two parts. |
| Measurement Accuracy (Active Energy) | 0.1% typical over dynamic range | 0.1% typical over dynamic range | Equivalent accuracy class means both meet the same revenue-metering accuracy targets, so accuracy is not a differentiator for substitution. |
| Target Application Class | Polyphase energy metering (basic) | Polyphase energy metering with power quality | The ADE7880 targets higher-end applications requiring power quality and harmonic data, while the ADE7858A targets standard metering, affecting functional substitutability. |
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 | ADE7858AACPZ | ADE7880ACPZ-RL |
|---|---|---|
| Part Status | Active | Active |
| Input Impedance | 400kOhm | 490kOhm |
| 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 |
| Base Product Number | ADE7858 | - |
| Measurement Error | 0.2% | - |
| Packaging | Tray | - |
Frequently asked questions
What are the key differences between the ADE7858AACPZ and ADE7880ACPZ-RL?
The ADE7858AACPZ is a polyphase energy metering IC with three sigma-delta ADCs and supports active, reactive, and apparent energy measurements plus fundamental and harmonic components. The ADE7880ACPZ-RL is a higher-performance polyphase energy metering IC that adds harmonic analysis capability with a dedicated harmonic engine, supports IEC 61000-4-7 harmonic calculations, and offers additional features such as zero-crossing detection, waveform sampling, and a broader set of power quality measurements. Both are Analog Devices polyphase metering devices, but the ADE7880 provides more advanced harmonic and power quality functionality.
Are the ADE7858AACPZ and ADE7880ACPZ-RL pin-compatible?
Both devices are offered in a 40-lead LFCSP package, but pin compatibility must be verified against the respective Analog Devices datasheets. The ADE7880 includes additional functions and signal pins (such as harmonic engine related outputs and additional zero-crossing/CF outputs) that may not map identically to the ADE7858A pinout. Designers should compare the pin function tables in both datasheets before considering a layout-compatible substitution.
Can the ADE7858AACPZ be replaced directly by the ADE7880ACPZ-RL in an existing design?
Not without validation. Although both are Analog Devices polyphase metering ICs in the same 40-lead LFCSP package, the ADE7880 offers additional harmonic analysis and power quality features, and its register map, pin functions, and firmware configuration differ from the ADE7858A. A direct replacement requires confirming pin compatibility, updating register initialization and calibration routines, and revalidating metering accuracy against the target specification.
What are the supply voltage and typical operating conditions for these devices?
Both the ADE7858A and ADE7880 operate from a single 3.3 V supply (typically 3.3 V ± 10%) for the analog and digital sections, with a separate digital I/O supply (VDDIO) that can range from 2.5 V to 3.6 V to interface with lower-voltage logic. Exact limits, including the internal LDO configuration and maximum ratings, should be confirmed in the respective Analog Devices datasheets.
Do both devices support SPI and I2C communication interfaces?
Yes. Both the ADE7858A and ADE7880 provide a serial peripheral interface (SPI) and an I2C-compatible interface for register access and configuration. The specific interface selection is made via dedicated pins, and the maximum clock rates and timing parameters should be verified in the respective datasheets.
Which device is better suited for applications requiring harmonic analysis?
The ADE7880ACPZ-RL is the appropriate choice for applications requiring harmonic analysis. It includes a dedicated harmonic engine that computes harmonic magnitudes and phase angles per IEC 61000-4-7, whereas the ADE7858A focuses on fundamental and harmonic energy accumulation without the full harmonic analysis engine. Designs needing detailed power quality and harmonic spectrum data should select the ADE7880.
What metering accuracy class do these devices support?
Both the ADE7858A and ADE7880 are designed to support Class 0.2 and Class 0.5 accuracy requirements for active and reactive energy metering per IEC 62053-22 and IEC 62053-23, depending on the external components, calibration, and PCB layout. Final accuracy certification depends on the complete meter design and must be validated through calibration and testing.
Are evaluation boards available for the ADE7858AACPZ and ADE7880ACPZ-RL?
Analog Devices provides evaluation boards for both devices to support rapid prototyping and firmware development. The specific evaluation board part numbers and their availability should be confirmed through Analog Devices or authorized distributors such as DigiKey, Mouser, or Future Electronics, as availability may vary.