Part A
ADE7755ARS
Компания Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 1570 ПКС
- Package
- SSOP-24
- Series
- PMIC - Измерение энергии
Replacement verdict
Not a drop-in replacement
The ADE7763ARSZ and ADE7755ARS are not functionally interchangeable despite sharing the same 20-lead SSOP footprint and single-phase energy-metering role. The ADE7763ARSZ provides a serial SPI-compatible interface with on-chip digital calibration and a wider dynamic range, whereas the ADE7755ARS relies on a fixed-frequency pulse output with external calibration. These architectural differences in output interface, calibration method, and measurement resolution make direct substitution impractical without redesign of the host interface and metering firmware.
Different output interface
Different calibration method
Different measurement resolution
Firmware redesign required
Parts at a glance
Part B
ADE7763ARSZ
Компания Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3281 ПКС
- Package
- SSOP-20
- 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 | ADE7763ARSZ | ADE7755ARS | Why it matters |
|---|---|---|---|
| Measurement Architecture | Single-phase, two-wire (with line frequency output and energy registers) | Single-phase, two-wire (pulse output only) | Determines the fundamental measurement topology and whether the device provides register-based energy data or only a pulse output. |
| Output Interface | SPI-compatible serial interface plus pulse outputs (CF, F1, F2) | Pulse outputs only (CF, F1, F2) | A serial interface allows a microcontroller to read energy registers and configure the device, while pulse-only output limits system integration options. |
| On-Chip Energy Registers | Yes (active, reactive, apparent energy and RMS registers) | No (pulse output only) | Register access enables advanced metering features such as reactive/apparent energy and RMS measurements, which are unavailable with pulse-only devices. |
| Reactive/Apparent Energy Measurement | Supported | Not supported | Reactive and apparent energy are required for many utility billing and power-quality applications; their absence restricts the device to active energy only. |
| RMS Voltage/Current Measurement | Supported (on-chip RMS registers) | Not supported | RMS measurement enables monitoring of voltage and current magnitudes, useful for power-quality and diagnostic functions. |
| Supply Voltage | 5 V (single supply) | 5 V (single supply) | Supply voltage compatibility ensures the device can be used in the same power rail design without level shifting. |
| Package | 20-lead SSOP | 20-lead SSOP | Package compatibility affects PCB footprint and assembly; matching packages simplify board redesign. |
| Operating Temperature Range | -40°C to +85°C | -40°C to +85°C | Industrial temperature range ensures reliable operation in harsh environments and metering applications. |
| On-Chip Calibration/Configuration | Yes (via serial interface registers) | Limited (via external components and pulse output) | Digital calibration simplifies manufacturing and improves accuracy, while limited calibration options may require more external trimming. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADE7755ARS | ADE7763ARSZ |
|---|---|---|
| Part Status | Obsolete | Active |
| Input Impedance | 390kOhm | 390kOhm |
| Measurement Error | 0.1% | 0.1% |
| Voltage - I / O High | 2.4V | 2.4V |
| Voltage - I / O Low | 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 primary functional differences between the ADE7763ARSZ and the ADE7755ARS?
The ADE7763ARSZ is a single-phase active and reactive energy metering IC with a serial peripheral interface (SPI) and on-chip digital calibration features, while the ADE7755ARS is a single-phase active energy metering IC that provides a pulse/frequency output proportional to active power. The ADE7763ARSZ offers more advanced on-chip calibration and reactive energy measurement, whereas the ADE7755ARS is a simpler active-energy-only solution.
Do the ADE7763ARSZ and ADE7755ARS use the same package and pinout?
Both devices are offered in a 20-lead SSOP (RS suffix) package, but their pin functions and internal signal assignments differ. The ADE7763ARSZ includes SPI interface pins and additional calibration-related pins, while the ADE7755ARS provides a frequency/pulse output and different analog input configuration. They are not pin-for-pin compatible substitutes.
Can the ADE7763ARSZ directly replace the ADE7755ARS in an existing design?
No. Although both are single-phase energy metering ICs in 20-lead SSOP packages, they differ in interface (SPI vs. pulse/frequency output), calibration architecture, and pin functions. A direct drop-in replacement is not possible without redesigning the interface, calibration, and PCB layout, and validating against the respective datasheets.
What type of output interface does each device provide?
The ADE7763ARSZ provides a serial peripheral interface (SPI) for reading energy registers and performing digital calibration, along with a pulse output. The ADE7755ARS provides a frequency/pulse output (F1, F2) proportional to active power, intended for driving a mechanical counter or microcontroller pulse input, without an SPI interface.
Which device supports reactive energy measurement?
The ADE7763ARSZ supports both active and reactive energy measurement, making it suitable for applications requiring reactive power or apparent power calculations. The ADE7755ARS is designed for active energy measurement only and does not provide reactive energy output.
How do the on-chip calibration capabilities compare between the two devices?
The ADE7763ARSZ includes on-chip digital calibration for gain, phase, and offset, accessible via the SPI interface, allowing system-level calibration in firmware. The ADE7755ARS relies on external component selection and its pulse output characteristics for calibration, with no SPI-accessible digital calibration registers.
Are both devices suitable for single-phase residential energy meter designs?
Yes. Both the ADE7763ARSZ and ADE7755ARS are intended for single-phase active energy metering applications such as residential electricity meters. The ADE7763ARSZ is suited to more advanced meters requiring reactive energy measurement and digital calibration, while the ADE7755ARS is suited to cost-sensitive active-energy-only meter designs.