Part A
AD736ARZ
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3310 PCS
- Package
- SOIC-8
- Series
- PMIC - RMS to DC Converters
Replacement verdict
Compatible functional replacement candidate
The AD736ARZ-R7 and AD736ARZ are functionally equivalent RMS-to-DC converter ICs sharing the same core architecture, package, and pinout, with the -R7 suffix denoting a tape-and-reel packaging variant rather than a functional difference. Both parts are interchangeable for design-in purposes, subject to confirming reel quantity and packaging requirements against production needs.
Package Type
High match
Pin Configuration
High match
Electrical Specifications
High match
Packaging and Ordering Format
Validation required
Parts at a glance
Part B
AD736ARZ-R7
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3953 PCS
- Package
- SOIC-8
- Series
- PMIC - RMS to DC Converters
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD736ARZ-R7 | AD736ARZ | Why it matters |
|---|---|---|---|
| Function | RMS-to-DC converter (true RMS) | RMS-to-DC converter (true RMS) | Both parts perform the same core signal-processing function, so they are functionally interchangeable in RMS measurement circuits. |
| Package / Mounting | 8-Lead SOIC (surface mount) | 8-Lead SOIC (surface mount) | Identical package and footprint means either part can be placed on the same PCB land pattern without layout changes. |
| Supply Voltage Range | ±2.8 V to ±16.5 V (dual) or 2.8 V to 16.5 V (single) | ±2.8 V to ±16.5 V (dual) or 2.8 V to 16.5 V (single) | Matching supply ranges confirm both parts operate in the same system power domains, preserving compatibility. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Same temperature rating ensures equivalent environmental performance and reliability in the target application. |
| Accuracy (RMS Conversion) | ±0.3% max reading error (typical spec) | ±0.3% max reading error (typical spec) | Identical accuracy specifications mean measurement precision is unaffected by choosing either part. |
| Bandwidth | 200 kHz (typical, -3 dB) | 200 kHz (typical, -3 dB) | Same bandwidth supports the same input signal frequency range, so AC measurement capability is unchanged. |
| Supply Current | ~200 µA (typical) | ~200 µA (typical) | Equivalent quiescent current keeps power budget and thermal behavior consistent between the two parts. |
| Packaging / Ordering Format | Tape and reel (R7 suffix), 750 units per reel | Tube / bulk (no reel suffix) | The only meaningful difference is the shipping format; this affects assembly line feeding and inventory handling, not electrical performance. |
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 | AD736ARZ | AD736ARZ-R7 |
|---|---|---|
| Part Status | Active | Not For New Designs |
| Supply Current | 160 µA | 160 µA |
| Voltage - Supply | 2.8V, -3.2V ~ ±16.5V | 2.8V, -3.2V ~ ±16.5V |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What is the difference between AD736ARZ-R7 and AD736ARZ?
Both parts are the same AD736 true RMS-to-DC converter die in the same 8-lead SOIC package (R-8 suffix). The "-R7" suffix denotes a tape-and-reel packaging option (7-inch reel, 750 pieces per reel), while AD736ARZ is the standard tube or tray ordering variant. Electrical specifications and grade (A grade) are identical; only the shipping/packaging format differs.
Are AD736ARZ-R7 and AD736ARZ electrically and functionally interchangeable?
Yes. Both are the AD736A grade true RMS-to-DC converter in an 8-lead SOIC package with identical pinout, transfer function, and specified performance. The only difference is the delivery format (tape-and-reel vs. standard packaging), so they are interchangeable in circuit design provided the board accepts the SOIC-8 footprint.
What is the AD736 and what does it do?
The AD736 is a low-power, low-cost true RMS-to-DC converter from Analog Devices that computes the RMS value of an input signal. It provides an output proportional to the true RMS of the input waveform, supporting both AC and DC inputs, and is commonly used in precision measurement, panel meters, and instrumentation applications.
What package do AD736ARZ-R7 and AD736ARZ use?
Both parts are supplied in an 8-lead SOIC package (Analog Devices R-8 suffix). The package is surface-mount and RoHS-compliant, as indicated by the "Z" in the part number.
What supply voltage does the AD736 require?
The AD736 operates from dual supplies of ±2.8 V to ±16.5 V, or from a single supply of +2.8 V to +16.5 V (with appropriate level shifting). It is a low-power device suitable for battery-operated and portable instrumentation.
Does the "-R7" suffix affect the moisture sensitivity level or handling requirements?
No. The "-R7" suffix only specifies tape-and-reel packaging. Moisture sensitivity level, reflow profile, and handling requirements are determined by the SOIC-8 package and are the same for both AD736ARZ-R7 and AD736ARZ. Refer to the Analog Devices datasheet and packaging information for the specified MSL.
Which part should be selected for automated SMT assembly?
AD736ARZ-R7 is the tape-and-reel variant, which is typically preferred for automated surface-mount pick-and-place assembly. AD736ARZ in standard packaging may be more suitable for prototyping, low-volume, or manual assembly. Both share the same SOIC-8 footprint and electrical performance.