Part A
ADE7755ARS
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 1570 PCS
- Package
- SSOP-24
- Series
- PMIC - Energy Metering
Replacement verdict
Compatible functional replacement candidate
The ADE7751ARSZRL and ADE7755ARS are both single-phase energy metering ICs from Analog Devices with closely aligned core functionality, making them a viable functional replacement candidate. However, the ADE7751ARSZRL offers a wider operating temperature range and additional on-chip features, while the ADE7755ARS provides a more compact pin count. Designers should validate the specific metering accuracy requirements, supply voltage tolerances, and PCB footprint compatibility before finalizing the substitution.
Package Type
High match
Supply Voltage Range
High match
Operating Temperature Range
Validation required
Pin Count and Footprint
Validation required
Parts at a glance
Part B
ADE7751ARSZRL
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 4036 PCS
- Package
- SSOP-24
- 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 | ADE7751ARSZRL | ADE7755ARS | Why it matters |
|---|---|---|---|
| Measurement Function | Single-phase active energy (Wh) with pulse output | Single-phase active energy (Wh) with pulse output | Both are single-phase energy metering ICs, but the ADE7751 includes additional on-chip fault detection features that the ADE7755 lacks. |
| On-Chip Fault Detection | Yes (missing neutral, reverse polarity, phase reversal) | No | Fault detection enables tamper detection and safety diagnostics; its absence in the ADE7755 means those features must be implemented externally. |
| Package / Case | 20-Lead SSOP | 20-Lead SSOP | Identical package and pin count allow drop-in PCB compatibility between the two devices. |
| Supply Voltage (VDD) | 5 V nominal | 5 V nominal | Matching supply requirements mean the same power rail can be reused without redesign. |
| Output Interface | Pulse/Frequency output (CF, F1, F2) | Pulse/Frequency output (CF, F1, F2) | Both provide low-frequency and high-frequency pulse outputs for energy accumulation and calibration. |
| Operating Temperature Range | -40°C to +85°C | -40°C to +85°C | Equivalent industrial temperature range supports use in the same metering environments. |
| Reference Voltage | 2.5 V on-chip reference | 2.5 V on-chip reference | A matched internal reference ensures comparable accuracy and simplifies external component selection. |
| Analog Input Channels | Two current channels + one voltage channel | Two current channels + one voltage channel | Same channel architecture supports identical sensor interfacing for current and voltage measurement. |
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 | ADE7751ARSZRL |
|---|---|---|
| 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 key differences between the ADE7751ARSZRL and ADE7755ARS?
The ADE7751ARSZRL is a single-phase energy metering IC with an on-chip oscillator and reference, supplied in a 20-lead SSOP (RS-20) package and provided in tape-and-reel form. The ADE7755ARS is a single-phase energy metering IC in a 24-lead SSOP (RS-24) package supplied in tube form. Both are Analog Devices energy measurement ICs, but they differ in package pin count, ordering format, and specific feature set as defined in their respective datasheets.
Are the ADE7751ARSZRL and ADE7755ARS pin-compatible?
No. The ADE7751ARSZRL uses a 20-lead SSOP package, while the ADE7755ARS uses a 24-lead SSOP package. The different pin counts and pin assignments mean they are not drop-in replacements for each other; the PCB land pattern and pin functions must be verified against each device's datasheet before substitution.
What is the primary function of these devices?
Both the ADE7751ARSZRL and ADE7755ARS are single-phase, bidirectional energy metering ICs from Analog Devices designed to measure active power and energy in residential and industrial applications. They interface to a shunt or current transformer for current sensing and a resistive divider for voltage sensing, and they output pulse frequencies proportional to active power.
What supply voltage do the ADE7751ARSZRL and ADE7755ARS require?
Both devices operate from a single 5 V supply (VDD = 5 V nominal) as specified in their Analog Devices datasheets. Designers should confirm the exact operating range and tolerance in the respective datasheet before finalizing the power supply design.
How do the package and ordering formats differ between the two parts?
The ADE7751ARSZRL is supplied in a 20-lead SSOP and is delivered in tape-and-reel packaging (the "RL" suffix indicates reel). The ADE7755ARS is supplied in a 24-lead SSOP in tube form. These differences affect PCB footprint, assembly handling, and inventory management, so the correct orderable part number should be used for each design.
Can the ADE7751ARSZRL be used as a direct substitute for the ADE7755ARS in an existing design?
No, not without design changes. Because the two devices have different package pin counts (20 vs 24 leads) and potentially different pin functions and internal feature sets, a direct substitution is not possible. Any replacement requires validating pin assignments, external component values, and metering performance against the target device's datasheet.
What type of current sensing do these energy metering ICs support?
Both the ADE7751ARSZRL and ADE7755ARS support current sensing via a shunt resistor or a current transformer on their current channel inputs, as described in the Analog Devices datasheets. The appropriate input configuration and external component values should be selected based on the application's current range and the datasheet's recommended input levels.