Analog Devices Inc. AD2S1205WSTZ
| Parameters | |
|---|---|
| Series | - |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) |
| RoHS Status | ROHS3 Compliant |
| Package / Case | 44-LQFP |
| Mfr | Analog Devices Inc. |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 125°C |
| Type | R/D Converter |
| Number of Channels | 2 |
| Supplier Device Package | 44-LQFP (10x10) |
| Voltage - Supply | 4.75V ~ 5.25V |
| Voltage Supply Source | Analog and Digital |
| Data Interface | Serial, Parallel |
| Resolution (Bits) | 12 b |
| Sampling Rate (Per Second) | - |
| Package | Tray |
| Product Status | Active |
| Base Product Number | AD2S1205 |
| REACH Status | REACH Unaffected |
| Standard Package | 1 |
| ECCN | EAR99 |
| HTSUS | 8542.39.0001 |
AD2S1205WSTZ Resolver-to-digital converter, high-accuracy RDC resolver IC
The AD2S1205WSTZ is a high-performance resolver-to-digital converter (RDC) from Analog Devices, designed to accurately measure angular position and velocity in motion control systems. It supports 10-bit to 16-bit resolution with a tracking rate of up to 1,250 rps (revolutions per second), making it suitable for high-speed servo applications. The device operates on a 5V single supply and features an integrated Type II tracking loop for robust noise immunity and minimal latency. Housed in a 52-lead LQFP package, it is built for industrial environments with an operating temperature range of −40°C to +125°C. The AD2S1205WSTZ supports both sinusoidal and differential reference inputs, ensuring compatibility with a wide range of resolver sensors.
AD2S1205WSTZ R/D Converter 12 b Serial Key Features
The AD2S1205WSTZ delivers ±2 arc-minutes accuracy and ±1 LSB linearity error, providing precise position feedback for closed-loop control systems. Its dynamic performance includes a bandwidth of 1.5 kHz, enabling real-time response in high-speed applications. The converter features on-chip excitation circuitry (3 Vrms, 10 kHz), eliminating the need for external oscillator components. Additional benefits include fault detection (loss of signal, out-of-range errors) and low power consumption (150 mW typical), making it ideal for aerospace, automotive, and industrial automation systems.
AD2S1205WSTZ Applications
This RDC is widely used in motor control systems (BLDC, PMSM), robotics, and CNC machines where high-resolution angular feedback is critical. It is also employed in avionics (flight control surfaces, gyro stabilization), automotive (steering angle sensing, throttle control), and industrial encoders. The AD2S1205WSTZ is particularly valuable in harsh environments due to its EMI-resistant design and wide temperature tolerance, ensuring reliable operation in electric vehicles, wind turbines, and military-grade equipment.
Selection Advantages
The AD2S1205WSTZ stands out with higher resolution (16-bit) and faster tracking rates compared to older RDCs like the AD2S90. Its integrated excitation source reduces BOM cost, while built-in diagnostics enhance system reliability. Engineers prefer it over optical encoders in dusty or high-vibration environments due to its contactless resolver-based sensing. Additionally, its low-latency tracking loop ensures minimal phase delay in high-performance servo systems.
Alternative Models
● AD2S1210: Higher 12-bit to 16-bit resolution with 2,500 rps tracking rate, suited for ultra-high-speed applications.
● AD2S80A: Legacy 10-bit to 16-bit RDC with ±5 arc-minutes accuracy, ideal for cost-sensitive designs.
● RDC-19220 (CUI Devices): Lower-cost alternative with 12-bit resolution but limited to 600 rps.
● AU6802N1 (Aichi Micro): 14-bit resolver converter with 1,000 rps tracking, optimized for automotive use.
