Part A
AD2S90APZ
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 3754 PCS
- Package
- PLCC-20
- Series
- Acquisition de données - ADC DAC - dédié
Replacement verdict
Compatible functional replacement candidate
The AD2S90APZ and AD2S90APZ-RL7 are functionally identical resolver-to-digital converter ICs from Analog Devices, sharing the same core architecture, package, and electrical specifications. The only distinction is the delivery format: the AD2S90APZ is supplied in tubes, while the AD2S90APZ-RL7 is supplied in tape-and-reel packaging. For design, layout, and performance purposes, these two part numbers are fully interchangeable, and the choice between them should be driven solely by the assembly line's feeder and packaging requirements.
Function and Architecture
High match
Package Type
High match
Electrical Specifications
High match
Packaging and Delivery Format
High match
Parts at a glance
Part B
AD2S90APZ-RL7
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 6523 PCS
- Package
- LCC-20
- Series
- Acquisition de données - ADC DAC - dédié
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD2S90APZ | AD2S90APZ-RL7 | Why it matters |
|---|---|---|---|
| Manufacturer | Analog Devices Inc. | Analog Devices Inc. | Same manufacturer ensures consistent design, documentation, and quality standards. |
| Function | Resolver-to-Digital Converter (R/D Converter) | Resolver-to-Digital Converter (R/D Converter) | Identical core function is required for direct functional substitutability. |
| Resolution | 12 bit | 12 bit | Resolution determines angular position accuracy and must match for equivalent system performance. |
| Package / Case | 20-LCC (J-Lead) | 20-LCC (J-Lead) | Same package footprint allows drop-in replacement on existing PCB layouts. |
| Mounting Type | Surface Mount | Surface Mount | Mounting style must match to fit the same assembly process and board design. |
| Supply Voltage | 5 V | 5 V | Supply voltage compatibility is essential to avoid level shifting or power redesign. |
| Operating Temperature Range | -40°C to +85°C | -40°C to +85°C | Matching temperature range ensures the part works in the same environmental conditions. |
| Packaging | Tube | Tape & Reel | Packaging differs for automated assembly versus manual handling, but the device itself is identical. |
| RoHS Status | RoHS Compliant | RoHS Compliant | Both meet environmental regulations, avoiding compliance issues in production. |
| Moisture Sensitivity Level (MSL) | MSL 1 (Unlimited) | MSL 1 (Unlimited) | Same MSL simplifies storage and handling requirements during manufacturing. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD2S90APZ | AD2S90APZ-RL7 |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| Part Status | Active | Active |
| Type | R/D Converter | R/D Converter |
| Number of Channels | 2 | 2 |
| Resolution(Bits) | 12 b | 12 b |
| Data Interface | Serial | Serial |
| Voltage Supply Source | Dual ± | Dual ± |
| Voltage - Supply | ±4.75V ~ 5.25V | 4.75V ~ 5.25V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What is the difference between AD2S90APZ and AD2S90APZ-RL7?
The AD2S90APZ and AD2S90APZ-RL7 are functionally identical resolver-to-digital converter ICs. The primary difference is the packaging format: AD2S90APZ is supplied in a standard tube or tray, while AD2S90APZ-RL7 is supplied in tape-and-reel packaging for automated pick-and-place assembly. Both share the same die, electrical specifications, and 20-lead PLCC package.
Are AD2S90APZ and AD2S90APZ-RL7 electrically interchangeable?
Yes. Both part numbers refer to the same Analog Devices AD2S90 resolver-to-digital converter with identical electrical characteristics, including resolution, tracking rate, and input/output specifications. The only difference is the shipping packaging, so they are electrically interchangeable in the same PCB design.
What package type do AD2S90APZ and AD2S90APZ-RL7 use?
Both devices are offered in a 20-lead PLCC (Plastic Leaded Chip Carrier) package. The "P" in the part number suffix denotes the PLCC package option. The "-RL7" suffix indicates tape-and-reel packaging of the same PLCC device.
What is the resolution of the AD2S90APZ and AD2S90APZ-RL7?
The AD2S90 is a 12-bit resolution resolver-to-digital converter. Both the AD2S90APZ and AD2S90APZ-RL7 provide 12-bit angular position output, which corresponds to approximately 0.088 degrees of resolution per LSB.
Can AD2S90APZ-RL7 be used as a drop-in replacement for AD2S90APZ?
Yes, provided the assembly process supports tape-and-reel feeding. Since both parts share the same die, package, and pinout, the AD2S90APZ-RL7 can be used as a drop-in replacement for the AD2S90APZ in any design. The only consideration is that tape-and-reel packaging is intended for automated assembly equipment.
What is the operating temperature range for AD2S90APZ and AD2S90APZ-RL7?
Both the AD2S90APZ and AD2S90APZ-RL7 are specified for the industrial temperature range of -40°C to +85°C. This is consistent with the "A" grade designation in the part number.
Why would a designer choose AD2S90APZ-RL7 over AD2S90APZ?
The AD2S90APZ-RL7 is supplied in tape-and-reel format, which is preferred for high-volume automated PCB assembly lines using pick-and-place equipment. The AD2S90APZ in tubes or trays is more suitable for low-volume prototyping or manual assembly. The choice depends on the manufacturing process, not on electrical performance.