Part A
ADE7755ARS
ADI公司
- Lifecycle
- Active
- Stock
- 1570 件
- Package
- SSOP-24
- Series
- PMIC-電能計量
Replacement verdict
Compatible functional replacement candidate
The ADE7751ARSZ and ADE7755ARS are both single-phase energy metering ICs from the same Analog Devices ADE77xx family, sharing a common 20-lead SSOP footprint and similar supply and interface characteristics. The ADE7751ARSZ is a functional replacement candidate for the ADE7755ARS, but the two devices differ in their metering architecture and on-chip functionality, so the target application's measurement requirements and firmware must be validated before substitution.
Package Type
High match
Supply Voltage
High match
Metering Architecture
Validation required
On-Chip Functionality
Validation required
Parts at a glance
Part B
ADE7751ARSZ
ADI公司
- Lifecycle
- Active
- Stock
- 7666 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 | ADE7751ARSZ | ADE7755ARS | Why it matters |
|---|---|---|---|
| Measurement Function | Single-phase active energy (Wh) with pulse output | Single-phase active energy (Wh) with pulse output and additional reactive/current channel | Defines the core metering capability; the ADE7755 offers an extra channel for reactive power or current sensing, affecting system design. |
| Number of Analog Input Channels | 2 (current and voltage) | 2 (current and voltage) | Both use two channels for active power, but the ADE7755 can multiplex channels for additional measurements. |
| On-Chip Oscillator | Yes (internal oscillator) | No (requires external crystal/clock) | An internal oscillator simplifies design and reduces BOM; the ADE7755 needs an external clock source. |
| Supply Voltage Range | 4.75 V to 5.25 V | 4.75 V to 5.25 V | Both operate from a 5 V supply, so power supply design is compatible between the two. |
| Package | 20-lead SSOP | 20-lead SSOP | Identical package allows drop-in PCB compatibility for footprint and assembly. |
| Output Interface | Pulse/frequency output (CF, F1, F2) | Pulse/frequency output (CF, F1, F2) | Both provide frequency outputs proportional to active power, enabling direct interface to a counter or MCU. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Same industrial temperature range supports use in similar environments. |
| Reference Voltage | 2.5 V internal reference | 2.5 V internal reference | Matching internal reference simplifies analog front-end design and calibration. |
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 | ADE7755ARS | ADE7751ARSZ |
|---|---|---|
| Part Status | Obsolete | Active |
| Input Impedance | 390kOhm | 390kOhm |
| Measurement Error | 0.1% | 0.1% |
| Voltage - I / O High | 2.4V | 2.4V, 4V, 4.5V |
| Voltage - I / O Low | 0.8V | 0.5V, 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 primary functional differences between the ADE7751ARSZ and the ADE7755ARS?
The ADE7751ARSZ is a single-phase energy metering IC with an on-chip oscillator and a serial interface, designed for active energy measurement with a pulse output. The ADE7755ARS is a single-phase energy metering IC that provides a frequency output proportional to active power, intended for calibration and energy accumulation. Both are Analog Devices energy metering ICs in 20-lead SSOP packages, but they differ in output interface and internal architecture.
Are the ADE7751ARSZ and ADE7755ARS pin-compatible?
Both devices are offered in a 20-lead SSOP (RS) package, but pin compatibility must be verified against the respective datasheet pin configurations. The ADE7751ARSZ and ADE7755ARS have different pin functions and cannot be assumed to be drop-in replacements without confirming the pinout and external circuit requirements from the official Analog Devices datasheets.
What is the package type for both the ADE7751ARSZ and ADE7755ARS?
Both the ADE7751ARSZ and the ADE7755ARS are supplied in a 20-lead SSOP (Shrink Small Outline Package), indicated by the "RS" suffix in the part number. The "Z" suffix on ADE7751ARSZ denotes RoHS-compliant lead-free packaging per Analog Devices nomenclature.
Can the ADE7751ARSZ and ADE7755ARS be used in the same metering application?
Both are single-phase active energy metering ICs from Analog Devices, but they are not interchangeable without design changes. The ADE7751ARSZ provides a serial interface and on-chip oscillator, while the ADE7755ARS provides a frequency output for active power. Selection depends on the system architecture, calibration method, and output interface required by the meter design.
Do both devices support RoHS compliance?
The ADE7751ARSZ carries the "Z" suffix, which per Analog Devices denotes RoHS-compliant, lead-free packaging. The ADE7755ARS part number as stated does not include the "Z" suffix, so RoHS compliance should be confirmed from the specific ordering code and datasheet before assuming compliance.
What are the typical applications for the ADE7751ARSZ and ADE7755ARS?
Both devices are intended for single-phase energy metering applications such as residential electricity meters and energy monitoring systems. The ADE7751ARSZ is suited to designs requiring a serial interface and on-chip oscillator, while the ADE7755ARS is suited to designs using a frequency output proportional to active power for energy accumulation and calibration.
Where can verified technical parameters for these devices be obtained?
Verified parameters, including supply voltage, accuracy specifications, interface details, and package dimensions, should be obtained from the official Analog Devices datasheets for the ADE7751 and ADE7755, or from authorized distributors such as DigiKey, Mouser, or TTI. Design decisions should be based on the latest manufacturer documentation rather than assumed equivalence between the two part numbers.