Part A
ADE7753ARSZ
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 4461 個数
- Package
- SSOP-20
- Series
- PMIC - 電力量計
Replacement verdict
Compatible functional replacement candidate
The ADE7753ARSZ is a functional upgrade candidate for the ADE7755ARSZ, sharing the same 20-lead SSOP footprint and single-phase energy-metering role while adding waveform sampling, line-frequency output, and an SPI-compatible serial interface. Designers should validate register-level firmware compatibility and confirm the added functionality is acceptable before substituting in existing ADE7755ARSZ sockets.
Package Type
High match
Supply Voltage Range
High match
Output Interface
Validation required
Metering Functions
Validation required
Parts at a glance
Part B
ADE7755ARSZ
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 4866 個数
- Package
- SSOP-24
- 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 | ADE7755ARSZ | ADE7753ARSZ | Why it matters |
|---|---|---|---|
| Measurement Architecture | Fixed-function energy metering IC (analog-to-digital conversion with on-chip fixed DSP) | Energy metering IC with on-chip digital signal processor and configurable registers | A fixed-function device offers limited configurability, while a DSP-based device allows firmware-driven calibration and feature changes, affecting design flexibility and substitutability. |
| Active Energy Output Interface | Pulse/frequency output (F1, F2) proportional to active power | Serial peripheral interface (SPI) with on-chip registers plus pulse output | The output interface determines how the host MCU reads energy data; a pulse-only device cannot be read digitally, so it is not a drop-in replacement for an SPI-based design. |
| On-Chip DSP / Register Programmability | No programmable DSP; fixed signal processing | Programmable DSP with calibration and configuration registers | Programmability enables in-system calibration and adaptation to different meter classes, which a fixed-function part cannot provide. |
| Reactive Power / Apparent Power Measurement | Active power only | Active, reactive, and apparent power computation | Support for reactive and apparent power is required for many utility billing schemes; a part lacking these cannot substitute in such applications. |
| On-Chip Temperature Sensor | Not available | Integrated temperature sensor channel | An on-chip temperature channel supports compensation and diagnostics; its absence limits accuracy over temperature in demanding metering designs. |
| Supply Voltage Range | 4.75 V to 5.25 V (single 5 V supply) | 4.75 V to 5.25 V (single 5 V supply) | Matching supply requirements simplifies board-level substitution, though both parts share the same nominal 5 V rail. |
| Package | 20-lead SSOP | 20-lead SSOP | Identical package and pin count allow the same PCB footprint, which is important for physical substitutability. |
| Communication Interface | Pulse output only (no serial bus) | SPI serial interface | The presence or absence of a serial bus fundamentally changes the host interface and firmware, so the two parts are not functionally interchangeable without redesign. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADE7753ARSZ | ADE7755ARSZ |
|---|---|---|
| Part Status | Active | 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 key differences between the ADE7755ARSZ and ADE7753ARSZ?
The ADE7755ARSZ is a single-phase energy metering IC that provides active power measurement via a pulse output (F1/F2) and is intended for basic watt-hour meter designs. The ADE7753ARSZ is a higher-integration single-phase metering IC that adds an on-chip digital integrator, a serial SPI-compatible interface, and multiple on-chip registers for active, reactive, and apparent power, RMS, and energy accumulation. In short, the ADE7755ARSZ is a pulse-output energy meter front end, while the ADE7753ARSZ provides a digital interface with richer measurement data.
Are the ADE7755ARSZ and ADE7753ARSZ pin-compatible?
No. Both devices are offered in a 20-lead SSOP (RS suffix), but their pin functions differ. The ADE7755ARSZ provides pulse outputs (F1, F2), CF, and analog inputs, while the ADE7753ARSZ includes a serial interface (SPI-compatible) with additional digital pins. A direct drop-in replacement is not possible without verifying pin functions and the PCB layout against the respective datasheets.
Do both devices support a serial digital interface?
No. The ADE7753ARSZ includes an SPI-compatible serial interface for reading and writing on-chip registers, enabling access to energy, RMS, and waveform data. The ADE7755ARSZ does not provide a serial register interface; its primary outputs are the F1/F2 pulse outputs and the CF calibration output.
What measurement outputs does the ADE7755ARSZ provide?
The ADE7755ARSZ provides low-frequency pulse outputs F1 and F2 for active energy accumulation, plus a higher-frequency CF output used for calibration and verification. It does not provide a digital register interface for reading RMS or reactive power values.
Can the ADE7753ARSZ measure reactive and apparent power in addition to active power?
Yes. The ADE7753ARSZ includes on-chip registers and signal processing for active power, reactive power, and apparent power, along with voltage and current RMS measurements. The ADE7755ARSZ is focused on active power/energy measurement via pulse outputs and does not provide the same register-based reactive and apparent power data.
Are both devices supplied in the same package type?
Both the ADE7755ARSZ and ADE7753ARSZ are offered in a 20-lead SSOP package (the "RS" suffix in the part number). However, identical package type does not imply identical pinout or functional compatibility; designers must confirm pin assignments from the respective datasheets.
Which device is more suitable for a design requiring digital calibration and register access?
The ADE7753ARSZ is the appropriate choice when digital calibration and register access are required, because it provides an SPI-compatible serial interface and on-chip registers for configuration and measurement data. The ADE7755ARSZ relies on pulse outputs and hardware-based calibration via the CF output, without a serial register interface.