Part A
ADE7755ARS
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 1570 PCS
- Package
- SSOP-24
- Series
- PMIC - Energy Metering
Replacement verdict
Not a drop-in replacement
The ADE7753ARSZ and ADE7755ARS are not functionally interchangeable despite sharing the same 20-lead SSOP package and a common energy-metering role. The ADE7753ARSZ integrates a programmable gain amplifier, a digital integrator, and a waveform sampling interface that the ADE7755ARS does not provide, while the two devices differ in their serial interface, register architecture, and calibration methodology. A direct board-level substitution is therefore not possible without redesign of the surrounding signal chain, firmware, and interface circuitry.
Different signal chain architecture
Different serial interface
Different register map
Different calibration method
Parts at a glance
Part B
ADE7753ARSZ
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 4461 PCS
- Package
- SSOP-20
- Series
- PMIC - Energy Metering
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | ADE7753ARSZ | ADE7755ARS | Why it matters |
|---|---|---|---|
| Measurement Architecture | Single-phase, bidirectional (active and reactive energy), with di/dt current sensor and digital integrator | Single-phase, bidirectional active energy only, with di/dt current sensor | Determines whether reactive energy and waveform-based measurements are available; the ADE7753 supports reactive power/energy while the ADE7755 is active-energy only. |
| On-Chip Digital Integrator | Yes (selectable, for di/dt current sensors such as Rogowski coils) | No | The integrator allows direct interface to di/dt sensors without external analog integration; its absence in the ADE7755 restricts sensor options. |
| Communication Interface | SPI-compatible serial interface | Pulse/frequency outputs (F1, F2, CF) only | SPI enables reading of internal registers and calibration data by a microcontroller, whereas the ADE7755 provides only pulse outputs, limiting configurability and diagnostics. |
| On-Chip Registers / Calibration | Multiple internal registers for gain, offset, phase, and energy calibration via SPI | Limited; calibration via external components and pulse output frequency | Register-based calibration allows precise digital trimming and re-calibration in firmware; the ADE7755 relies on hardware trimming, reducing flexibility. |
| Package | 20-lead SSOP | 20-lead SSOP | Identical package and pin count simplify PCB layout substitution, though pin functions differ and must be verified. |
| Supply Voltage | 5 V nominal (4.75 V to 5.25 V) | 5 V nominal (4.75 V to 5.25 V) | Matching supply requirements allow the same power rail to be reused, but the values are identical so this is not a differentiator. |
| On-Chip Temperature Sensor | Yes | No | An internal temperature sensor supports compensation and diagnostics; its absence in the ADE7755 removes this capability. |
| On-Chip Voltage Reference | Yes (internal 2.4 V reference) | Yes (internal reference) | Both include an internal reference, reducing external component count; the specific reference value affects ADC scaling and must be considered in calibration. |
| Zero-Crossing Detection Output | Yes (ZX pin) | No dedicated zero-crossing output | Zero-crossing output supports synchronization and relay/triac control; the ADE7755 lacks this feature, limiting certain application designs. |
| Energy Measurement Bandwidth / Harmonic Handling | Supports wider bandwidth with digital filtering and reactive measurement | Active energy focused, narrower functional scope | The ADE7753 offers more comprehensive measurement capability, making it suitable for advanced metering, while the ADE7755 targets basic active-energy metering. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADE7755ARS | ADE7753ARSZ |
|---|---|---|
| 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 ADE7753ARSZ and the ADE7755ARS?
The ADE7753ARSZ is a single-phase multifunction energy metering IC with a serial peripheral interface (SPI), an on-chip digital integrator for di/dt current sensors, and waveform sampling capability. The ADE7755ARS is a single-phase energy metering IC that provides a pulse-frequency output proportional to active power and a higher-frequency output for calibration, without an SPI interface or waveform sampling. The ADE7753ARSZ offers more advanced features, while the ADE7755ARS is a simpler, lower-cost solution for basic energy metering.
Are the ADE7753ARSZ and ADE7755ARS pin-compatible?
No. The ADE7753ARSZ is supplied in a 20-lead SSOP package, while the ADE7755ARS is supplied in a 24-lead SSOP package. The pin counts and pin functions differ, so they are not pin-compatible and cannot be interchanged on the same PCB footprint without redesign.
Do both devices support the same communication interface?
No. The ADE7753ARSZ includes an SPI-compatible serial interface for reading and writing registers and accessing on-chip data. The ADE7755ARS does not have a serial data interface; it provides frequency outputs (F1, F2, and CF) for active power and calibration. System designs requiring register access or waveform data must use the ADE7753ARSZ.
Can the ADE7755ARS be used as a drop-in replacement for the ADE7753ARSZ?
No. Because the two devices differ in package, pinout, communication interface, and feature set, the ADE7755ARS is not a drop-in replacement for the ADE7753ARSZ. Any substitution requires a PCB redesign and validation against the target application requirements.
Which device is better suited for applications requiring waveform sampling or harmonic analysis?
The ADE7753ARSZ is the appropriate choice because it provides on-chip waveform sampling and access to instantaneous data through its SPI interface, enabling harmonic analysis and advanced power quality monitoring. The ADE7755ARS does not provide waveform sampling or register-level data access, so it is limited to pulse-frequency energy accumulation.
Do both devices operate from the same supply voltage?
Yes. Both the ADE7753ARSZ and the ADE7755ARS operate from a single 5 V supply. Designers should still verify the specified supply tolerance and current consumption from the respective manufacturer datasheets for the target operating conditions.
Which device offers a simpler design for basic single-phase energy metering?
The ADE7755ARS offers a simpler design for basic single-phase active energy metering because it outputs pulse frequencies proportional to active power and requires no SPI communication or register configuration. The ADE7753ARSZ requires interface configuration and firmware support but provides greater functionality.