Part A
AD2S1210ASTZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3827 PCS
- Package
- LQFP-48
- Series
- Acquisição de dados - ADCs-DACs - Objetivo Especial
Replacement verdict
Compatible functional replacement candidate
The AD2S1210ASTZ and AD2S1200YST are both resolver-to-digital converters from Analog Devices sharing a common functional architecture and 44-lead LQFP footprint, making the AD2S1210ASTZ a viable functional replacement candidate for the AD2S1200YST in resolver interface applications. However, designers must validate supply voltage, resolution, and excitation frequency requirements against the target design before substitution, as these parameters differ between the two devices.
Supply Voltage
Validation required
Resolution
Validation required
Package Type
High match
Excitation Frequency
Validation required
Parts at a glance
Part B
AD2S1200YST
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 2893 PCS
- Package
- LQFP-44
- Series
- Acquisição de dados - ADCs-DACs - Objetivo Especial
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD2S1210ASTZ | AD2S1200YST | Why it matters |
|---|---|---|---|
| Resolution | 10/12/14/16 bit (user selectable) | 12 bit | Higher selectable resolution improves angular accuracy and position feedback precision in servo and motor control loops. |
| Input Signal Type | Programmable sinusoidal | Differential sinusoidal | Determines compatibility with the resolver or sin/cos sensor output format used in the application. |
| Maximum Tracking Rate | 3125 rps (at 10-bit resolution) | 1000 rps | Higher tracking rate supports faster rotating machinery without losing position lock. |
| Supply Voltage | 5 V (AVDD/DVDD) | 5 V | Supply voltage must match the system power rail for direct electrical compatibility. |
| Interface | SPI (serial) | Parallel and serial | Interface type dictates the host controller connection and firmware/software design. |
| Package | 48-lead LQFP (7x7 mm) | 44-lead LQFP (10x10 mm) | Package footprint and pin count affect PCB layout and mechanical fit for drop-in replacement. |
| Operating Temperature Range | -40°C to +125°C | -40°C to +85°C | Wider temperature range enables use in harsher industrial and automotive environments. |
| Fault Detection | Built-in fault detection (LOS, DOS, LOT) | Built-in fault detection (LOS, DOS, LOT) | Fault detection supports system safety and diagnostics for resolver signal integrity. |
| Excitation Frequency Range | 2 kHz to 20 kHz | 10 kHz to 20 kHz | Excitation frequency range must match the resolver's specified carrier frequency for accurate demodulation. |
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 | AD2S1210ASTZ | AD2S1200YST |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Type | R/D Converter | R/D Converter |
| Number of Channels | 2 | 2 |
| Resolution(Bits) | 10, 12, 14, 16 b | 12 b |
| Data Interface | Serial, Parallel | Serial, Parallel |
| Voltage Supply Source | Analog and Digital | Analog and Digital |
| Voltage - Supply | 4.75V ~ 5.25V | 4.75V ~ 5.25V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 125°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the key differences between the AD2S1210ASTZ and the AD2S1200YST?
The AD2S1210ASTZ is a 10-bit to 16-bit resolvable-to-digital converter with a parallel and serial interface, while the AD2S1200YST is a 12-bit resolvable-to-digital converter with a parallel interface only. The AD2S1210ASTZ offers higher resolution and a serial interface option, whereas the AD2S1200YST provides a fixed 12-bit resolution and does not include a serial interface.
Are the AD2S1210ASTZ and AD2S1200YST pin-compatible?
No, they are not pin-compatible. The AD2S1210ASTZ is available in a 48-lead LQFP package, while the AD2S1200YST is available in a 44-lead LQFP package. The different package sizes and pin counts prevent direct PCB footprint compatibility.
Can the AD2S1210ASTZ be used as a drop-in replacement for the AD2S1200YST?
No, the AD2S1210ASTZ cannot be used as a drop-in replacement for the AD2S1200YST due to differences in package size, pin count, and pin functions. A redesign of the PCB layout and verification of the interface and resolution requirements would be necessary.
What is the resolution of each device?
The AD2S1210ASTZ supports selectable resolution from 10 bits to 16 bits. The AD2S1200YST has a fixed resolution of 12 bits.
Do both devices support a serial interface?
No. The AD2S1210ASTZ supports both parallel and serial interfaces. The AD2S1200YST supports only a parallel interface.
What are the operating temperature ranges for these devices?
Both the AD2S1210ASTZ and the AD2S1200YST are specified for the industrial temperature range of −40°C to +85°C.
What is the maximum tracking rate for each converter?
The AD2S1210ASTZ has a maximum tracking rate of 3125 rps (revolutions per second) at 10-bit resolution, 1562.5 rps at 12-bit resolution, 781.25 rps at 14-bit resolution, and 390.625 rps at 16-bit resolution. The AD2S1200YST has a maximum tracking rate of 1000 rps.
Are both devices available in the same package type?
No. The AD2S1210ASTZ is offered in a 48-lead LQFP package, while the AD2S1200YST is offered in a 44-lead LQFP package. Both are LQFP packages, but they differ in pin count and body size.