Part A
ADE7751ARSZ
ADI公司
- Lifecycle
- Active
- Stock
- 7666 件
- Package
- SSOP-24
- Series
- PMIC-電能計量
Replacement verdict
Compatible functional replacement candidate
The ADE7755ARSZ and ADE7751ARSZ are both single-phase energy metering ICs from Analog Devices in the same 20-lead SSOP package, sharing a common pinout family and supply architecture. However, they differ in their metering signal chain: the ADE7755ARSZ provides a pulse/frequency output proportional to active power, while the ADE7751ARSZ integrates a sigma-delta ADC with a serial interface for direct energy register readout. Because the output interface and metering architecture differ, the ADE7751ARSZ is not a direct drop-in substitute for the ADE7755ARSZ; substitution requires firmware and interface redesign, and validation against the target metering specification is recommended before adoption.
Output Interface
Validation required
Metering Architecture
Validation required
Package Type
High match
Supply Voltage Range
High match
Parts at a glance
Part B
ADE7755ARSZ
ADI公司
- Lifecycle
- Active
- Stock
- 4866 件
- Package
- SSOP-24
- Series
- PMIC-電能計量
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | ADE7755ARSZ | ADE7751ARSZ | Why it matters |
|---|---|---|---|
| Measurement Function | Active energy (watt-hour) only | Active energy plus on-chip fault detection | The ADE7751 adds a fault-detection comparator for tamper/misconnection detection, so it is not a drop-in functional equivalent where that feature is required. |
| Fault Detection Feature | Not available | On-chip fault detection (FAULT pin) | Fault detection is the primary differentiator between these two parts; designs relying on tamper detection must use the ADE7751. |
| Package | 20-lead SSOP | 20-lead SSOP | Identical package and pin count allow the same PCB footprint, simplifying substitution at the layout level. |
| Supply Voltage | 5 V (single supply) | 5 V (single supply) | Matching supply requirements mean the same power rail can be reused without redesign. |
| ADC Architecture | Two sigma-delta ADCs | Two sigma-delta ADCs | Same conversion topology gives comparable measurement accuracy and signal-chain behavior. |
| Interface | Pulse/frequency output (CF, F1, F2) | Pulse/frequency output (CF, F1, F2) | Identical output interface allows the same microcontroller or counter circuitry to be used. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Same industrial temperature range supports use in identical environmental conditions. |
| Manufacturer | Analog Devices | Analog Devices | Same manufacturer ensures consistent documentation, quality standards, and support. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADE7751ARSZ | ADE7755ARSZ |
|---|---|---|
| Part Status | Active | Active |
| Input Impedance | 390kOhm | 390kOhm |
| Measurement Error | 0.1% | 0.1% |
| Voltage - I / O High | 2.4V, 4V, 4.5V | 2.4V |
| Voltage - I / O Low | 0.5V, 0.8V | 0.8V |
| Supply Current | 3mA | 3mA |
| Voltage - Supply | 4.75 V ~ 5.25 V | 4.75 V ~ 5.25 V |
| Meter Type | Single Phase | Single Phase |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the key differences between the ADE7755ARSZ and ADE7751ARSZ?
The ADE7755ARSZ is a single-phase energy metering IC with a pulse output proportional to active power, while the ADE7751ARSZ is a single-phase energy metering IC with a serial interface (SPI-compatible) for reading active power and energy data. Both are manufactured by Analog Devices in a 20-lead SSOP package, but they differ in output interface and feature set.
Are the ADE7755ARSZ and ADE7751ARSZ pin-compatible?
No. Although both devices are housed in a 20-lead SSOP (RS-20) package, their pin functions differ. The ADE7755ARSZ provides a frequency pulse output (F1, F2) and no serial data interface, whereas the ADE7751ARSZ includes a serial interface with additional digital pins. Pin assignments must be verified against the respective Analog Devices datasheets before considering any board-level substitution.
What is the package type and operating temperature range for both devices?
Both the ADE7755ARSZ and ADE7751ARSZ are offered in a 20-lead SSOP package and are specified for the industrial temperature range of −40°C to +85°C, per Analog Devices datasheets.
Do both devices support the same supply voltage?
Yes. Both the ADE7755ARSZ and ADE7751ARSZ operate from a single 5 V supply (VDD = 5 V ± 5%), as specified in their respective Analog Devices datasheets.
Which device provides a serial interface for reading metering data?
The ADE7751ARSZ provides a serial interface (SPI-compatible) that allows a microcontroller to read active power and energy register data. The ADE7755ARSZ does not include a serial data interface; it outputs energy information as frequency pulses on the F1 and F2 pins.
Can the ADE7755ARSZ and ADE7751ARSZ be used in the same metering application?
Both are single-phase active energy metering ICs suitable for residential and industrial energy meters, but they serve different system architectures. The ADE7755ARSZ suits designs using a pulse-counting MCU, while the ADE7751ARSZ suits designs requiring direct digital register access via a serial bus. Selection depends on the host system interface requirements.
Are both devices RoHS compliant?
Yes. The "Z" suffix in both ADE7755ARSZ and ADE7751ARSZ denotes RoHS-compliant packaging per Analog Devices ordering nomenclature. Designers should confirm current compliance status on the official Analog Devices product pages or authorized distributor listings.