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 is a RoHS-compliant, lead-free version of the AD2S90AP resolver-to-digital converter. Both devices share identical functionality, pin configuration, and electrical specifications, making the AD2S90APZ a direct functional replacement for the AD2S90AP in new designs. The primary distinction is package composition and environmental compliance, which may affect soldering processes and regulatory requirements.
Functionality
High match
Pin Configuration
High match
Electrical Specifications
High match
Package Composition
Validation required
Parts at a glance
Part B
AD2S90AP
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 9817 PCS
- 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 | AD2S90AP | Why it matters |
|---|---|---|---|
| Manufacturer | Analog Devices Inc. | Analog Devices Inc. | Same manufacturer ensures consistent design lineage and documentation. |
| 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 in the control loop. |
| Package / Case | 20-Lead PLCC (P-LCC-20) | 20-Lead PLCC (P-LCC-20) | Package must match for PCB footprint and assembly compatibility. |
| Mounting Type | Surface Mount | Surface Mount | Mounting style must match the board assembly process. |
| Supply Voltage | 5 V (single supply) | 5 V (single supply) | Supply voltage must be compatible with the existing power rail. |
| Operating Temperature Range | -40°C to +85°C | -40°C to +85°C | Temperature range must cover the target application environment. |
| Input Signal Type | Resolver sine/cosine differential inputs | Resolver sine/cosine differential inputs | Input signal compatibility ensures the device interfaces with the same sensor. |
| Output Interface | Serial (SPI-compatible) absolute position | Serial (SPI-compatible) absolute position | Output format must match the host controller interface for drop-in use. |
| RoHS Compliance | RoHS compliant | Non-RoHS (legacy) | RoHS status affects regulatory compliance and solder process compatibility. |
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 | AD2S90APZ | AD2S90AP |
|---|---|---|
| Part Status | Active | Obsolete |
| Type | R/D Converter | R/D Converter |
| Number of Channels | 2 | 2 |
| Resolution (Bits) | - | 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 |
| Base Product Number | - | AD2S90 |
| Resolution(Bits) | 12 b | - |
Frequently asked questions
What is the difference between the AD2S90APZ and the AD2S90AP?
The AD2S90APZ and AD2S90AP are functionally identical resolver-to-digital converters. The primary difference is the package and ordering option: the AD2S90APZ is the RoHS-compliant, lead-free version in a 20-lead PLCC package, while the AD2S90AP is the non-RoHS version of the same device in the same package. The "Z" suffix in Analog Devices nomenclature indicates RoHS compliance.
Are the AD2S90APZ and AD2S90AP pin-compatible?
Yes. Both devices are offered in the same 20-lead PLCC package with identical pinout and functionality. The only difference is the RoHS compliance status indicated by the "Z" suffix. They can be used interchangeably in the same PCB footprint.
Can the AD2S90APZ be used as a direct drop-in replacement for the AD2S90AP?
Yes, from a functional and pinout perspective, the AD2S90APZ is a direct drop-in replacement for the AD2S90AP. Both share the same electrical specifications, package dimensions, and pin configuration. The AD2S90APZ is simply the RoHS-compliant variant, so designs requiring lead-free compliance should use the AD2S90APZ.
What are the key specifications of the AD2S90APZ and AD2S90AP?
Both devices are monolithic resolver-to-digital converters with the following verified specifications: 12-bit resolution, ±10 arc minutes accuracy, maximum tracking rate of 1000 rps, input signal frequency range of 1 kHz to 20 kHz, and a 20-lead PLCC package. They operate from ±5 V supplies and provide a parallel 12-bit digital output. These specifications are identical for both the AD2S90APZ and AD2S90AP.
Is the AD2S90AP still available for purchase, or is the AD2S90APZ the recommended replacement?
The AD2S90AP is the non-RoHS version and may have limited availability or be obsolete depending on distributor stock. The AD2S90APZ is the RoHS-compliant version and is generally the recommended choice for new designs and for designs requiring compliance with RoHS directives. Customers should verify current availability with authorized distributors such as DigiKey or Mouser.
Do the AD2S90APZ and AD2S90AP have the same operating temperature range?
Yes. Both the AD2S90APZ and AD2S90AP are specified for the industrial temperature range of −40°C to +85°C. The temperature grade is indicated by the "A" in the part number, and both variants share this same rating.
What is the difference in moisture sensitivity level (MSL) between the AD2S90APZ and AD2S90AP?
Both the AD2S90APZ and AD2S90AP are rated at MSL 1 (unlimited floor life at ≤30°C/85% RH) in the 20-lead PLCC package. The MSL rating is determined by the package construction and is the same for both the RoHS and non-RoHS versions. Designers should confirm this with the manufacturer datasheet for the specific lot if required.
Which version should be used for a new design, AD2S90APZ or AD2S90AP?
For new designs, the AD2S90APZ is recommended because it is RoHS-compliant and lead-free, meeting current environmental regulations. The AD2S90AP is the non-RoHS version and is typically only used to support existing designs that were qualified with the non-compliant part. Both are electrically identical, so no redesign is required when switching from the AD2S90AP to the AD2S90APZ.