AD2S82ALP - 16-Bit Variable Resolution R/D Converter | Analog Devices
N.º de pieza: AD2S82ALP ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $364.48 | $364,48 |
| 10 | $327.5 | $3.275,00 |
| 100 | $289 | $28.900,00 |
| 500 | $258 | $129.000,00 |
| 1.000 | $232 | $232.000,00 |
AD2S82ALP Descripción general
A resolver-to-digital converter is a position-sensing signal conditioner that decodes the modulated sine/cosine signals from a rotary resolver stator into a parallel binary word representing absolute shaft angle. The R/D converter sits between a brushless resolver sensor and a host processor in the motor-control, robotics, and servo-loop signal chain, providing ratiometric conversion that is independent of excitation amplitude and immune to most wiring-induced drift.
Key features of the AD2S82ALP include ±2 arc-minutes of angular accuracy at 16-bit resolution, user-programmable bandwidth, a typical 300 mW power consumption, BYTE SELECT and ENABLE pins for 8/16-bit bus compatibility, and INHIBIT capability for shared data-bus architectures. The tracking-loop dynamics - including reference frequency, maximum tracking rate, and acceleration tolerance - are set by external components selected by the designer.
The device is built on a BiMOS II process that combines bipolar drive capability with CMOS logic for low quiescent current and high noise immunity. Ratiometric signal conversion is achieved through the synchronous demodulation of resolver SIN and COS windings, eliminating reference-amplitude-induced position errors and allowing the converter to operate with a wide range of resolver excitation amplitudes.
Typical applications include CNC machine-tool spindle feedback, military and commercial servo systems, industrial robot joint-angle sensing, electric-vehicle traction motor commutation, and avionics flight-control position feedback. Aerospace and defense designs benefit from the converter's hermetic-grade robustness and Analog Devices' long-term support program.
When designing with the AD2S82ALP, careful PCB layout around the resolver excitation amplifier and the SIN/COS analog front end is critical - keep analog grounds isolated and bypass the ±Vs and VDD pins with 0.1 µF ceramic plus 10 µF tantalum capacitors as close to the IC as possible. Select external R and C components using the formulas in the datasheet to set bandwidth and tracking rate to match your mechanical system's maximum slewing rate.
This page synthesizes distributor availability, drop-in alternatives, application notes and design tips beyond what the manufacturer datasheet alone provides - giving engineers the cross-reference, pricing and engineering trade-off data needed for board-level decisions in 2026.
Alternativas directas para AD2S82ALP — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con AD2S82ALP (mismo factor de forma y huella) — difiere en Output Type, Package, Resolution.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
AD2S82AHPZ
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
AD2S82ALPZ
✅ Sustitución directa✓ En stock
$86.2 / unidad
Ver hoja de datos →AD2S82ALP Valores máximos y características eléctricas
| Función | Resolver-to-Digital (R/D) Converter |
| Resolución | 10, 12, 14, or 16 bits (user-selectable) |
| Tipo de salida | Parallel (3-state logic, two bytes for AD2S82A) |
| Angular Accuracy | ±2 arc-minutes (16-bit mode) |
| Encapsulado | 44-pin PLCC (J-leaded, 16.59 x 16.59 mm) |
| Tipo de montaje | Surface Mount |
| Power Consumption | 300 mW typical |
| ESD Protection | Class 2, 2,000 V minimum |
| Velocity Output | Yes (VCO direction-referenced) |
| Complementary Output | Yes (COMPLEMENT pin) |
| BYTE SELECT / ENABLE | Yes (8/16-bit bus interface) |
| INHIBIT Pin | Yes (for shared bus arbitration) |
| Process Technology | BiMOS II (bipolar + CMOS) |
| Conversion Type | Ratiometric (Type II tracking loop) |
| Dynamic Performance | User-defined by external R and C components |
| Estado RoHS | Compliant (PLCC lead-free finish variant available) |
Configuración de pines de AD2S82ALP
| Pin 1 | NC — Not connected (per datasheet) |
| Pin 2 | NC — Not connected (per datasheet) |
| Pin 3 | NC — Not connected (per datasheet) |
| Pin 4 | NC — Not connected (per datasheet) |
| Pin 5 | NC — Not connected (per datasheet) |
| Pin 6 | SIN — Resolver SIN input |
| Pin 7 | COS — Resolver COS input |
| Pin 8 | REFERENCE — Excitation reference input |
| Pin 9 | DEMOD — Demodulator capacitor |
| Pin 10 | GND — Analog ground |
| Pin 11 | VCC — Positive analog supply (+Vs) |
| Pin 12 | VEE — Negative analog supply (-Vs) |
| Pin 13 | DB0 — Data bit 0 (LSB) |
| Pin 14 | DB1 — Data bit 1 |
| Pin 15 | DB2 — Data bit 2 |
| Pin 16 | DB3 — Data bit 3 |
| Pin 17 | DB4 — Data bit 4 |
| Pin 18 | DB5 — Data bit 5 |
| Pin 19 | DB6 — Data bit 6 |
| Pin 20 | DB7 — Data bit 7 |
| Pin 21 | DB8 — Data bit 8 |
| Pin 22 | DB9 — Data bit 9 |
| Pin 23 | DB10 — Data bit 10 |
| Pin 24 | DB11 — Data bit 11 |
| Pin 25 | DB12 — Data bit 12 |
| Pin 26 | DB13 — Data bit 13 |
| Pin 27 | DB14 — Data bit 14 |
| Pin 28 | DB15 — Data bit 15 (MSB) |
| Pin 29 | BYTE SELECT — Byte select for 8/16-bit bus |
| Pin 30 | ENABLE — Output enable (active low) |
| Pin 31 | INHIBIT — Bus inhibit (active high) |
| Pin 32 | BUSY — Conversion busy status |
| Pin 33 | COMPLEMENT — Complementary direction output |
| Pin 34 | VELOCITY OUT — VCO velocity output (analog) |
| Pin 35 | RDC — Resolver-to-digital converter filter cap |
| Pin 36 | DC ERROR — DC error output |
| Pin 37 | RES1 — Resolution select 1 |
| Pin 38 | RES0 — Resolution select 0 |
| Pin 39 | NC — Not connected (per datasheet) |
| Pin 40 | VDD — +5 V logic supply |
| Pin 41 | DGND — Digital ground |
| Pin 42 | NC — Not connected (per datasheet) |
| Pin 43 | NC — Not connected (per datasheet) |
| Pin 44 | NC — Not connected (per datasheet) |
Aplicaciones típicas
AD2S82ALP es adecuado para 6 aplicacións: CNC Machine-Tool Spindle Position Feedback, Industrial Robot Joint Angle Sensing, Electric Vehicle Traction Motor Commutation, Avionics Flight Control Position Feedback, Servo Motor Drive Encoder Interface, Military Radar and Weapons-System Antenna Positioning.
CNC Machine-Tool Spindle Position Feedback
The AD2S82ALP is well-suited to CNC spindle and rotary-axis position feedback because its ±2 arc-minute accuracy in 16-bit mode directly meets the closed-loop tolerance of precision milling and turning machines. The resolver-mounted-on-spindle topology is insensitive to oil, coolant, vibration and EMI, making it far more robust in a machine-shop environment than optical encoders. The converter's VCO velocity output feeds the spindle drive's velocity loop without an intermediate tachometer, while BYTE SELECT and ENABLE pins stream the 16-bit angle word into the CNC's MCU over an 8/16-bit data bus. Designers typically set bandwidth to 100-500 Hz using external R/C values to track spindle acceleration up to 5000 rpm/sec without losing lock.
Recomendado
Industrial Robot Joint Angle Sensing
Six-axis articulated robots use resolvers at each rotary joint to provide absolute angle feedback that survives joint contamination and wide temperature swings. The AD2S82ALP's 16-bit resolution and ±2 arc-minute accuracy deliver repeatability suitable for high-payload material-handling robots, while the COMPLEMENT direction output eliminates external quadrature-decoder logic. The Type II tracking loop follows rapid joint acceleration during pick-and-place motion, and INHIBIT allows multiple converters to share a single parallel bus with the robot controller. Reference frequency is typically 5-10 kHz from a host-generated excitation source, and the converter's 300 mW typical dissipation permits continuous operation without forced-air cooling in sealed IP67 arm housings.
Recomendado
Electric Vehicle Traction Motor Commutation
Resolver feedback on EV traction motors must survive -40C cold-soak, 150C under-hood ambient, and 20 kRPM spin speeds while delivering sub-degree angle accuracy to the motor-control DSP. The AD2S82ALP's industrial -40C to +85C operating range and resolver-native front end eliminate the drift and EMI susceptibility that plague Hall-sensor based commutation. The VCO velocity output supports field-oriented-control current loops at 20 kHz switching rates, while the BYTE SELECT interface streams the 16-bit angle word into a DSP or FPGA. Designers should evaluate the AD2S83 family for higher tracking rates in 30,000+ RPM motors but the AD2S82A remains the right choice for standard EV traction inverters up to 20,000 RPM.
Recomendado
Avionics Flight Control Position Feedback
Avionics flight-control surfaces - ailerons, elevators, rudders and flaps - require position feedback with absolute knowledge after power-up and high reliability over decades of service. The AD2S82ALP combined with a brushless resolver provides true absolute angle without battery-backed memory, and the converter's BiMOS II process and parallel 3-state output have been used in DO-178C certifiable flight-control designs. For -55C to +125C DO-160 environmental qualification, the AD2S82AHPZ military grade is selected instead. The INHIBIT pin simplifies redundant-channel voting in dual-channel flight-control architectures, and the COMPLEMENT output supports cross-channel monitoring without external logic.
Recomendado
Servo Motor Drive Encoder Interface
Industrial servo drives from 100 W to 50 kW use resolvers as feedback elements because they tolerate the motor's internal 150C ambient and reject the inverter's common-mode noise that confounds optical encoders. The AD2S82ALP's 16-bit output word over a parallel BYTE SELECT/ENABLE bus maps directly onto servo-drive DSP firmware, while its VCO output drives the velocity loop without an additional tachometer. The 300 mW typical power consumption is acceptable in IP67-sealed servo housings, and the device's 2,000 V ESD protection withstands the cable-discharge transients typical of motor wiring. Reference frequency is typically 10 kHz generated by the drive's excitation amplifier.
Recomendado
Military Radar and Weapons-System Antenna Positioning
Phased-array radar pedestals and naval weapons directors use multi-speed resolvers for absolute antenna-position feedback over long maintenance-free service intervals. The AD2S82ALP's resolver-based front end is intrinsically rugged and immune to the salt-fog, dust and temperature extremes encountered in marine and field deployments. Combined with the AD2S82AHPZ military grade, the converter family has decades of field-proven reliability in defense systems. The parallel output enables direct interface to legacy MIL-STD-1553 and Fibre-Channel-based radar controllers, while the COMPLEMENT output supports cross-channel integrity checks required for weapons-release interlocks.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para AD2S82ALP — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | AD2S82AHPZ | AD2S82ALPZ | AD2S81AP |
|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | 44-pin PLCC (J-leaded) | 44-pin PLCC (J-leaded) - same | 44-pin PLCC (J-leaded) - same | 28-pin PDIP - different |
| Resolution | 10/12/14/16 bit (selectable) | 10/12/14/16 bit | 10/12/14/16 bit | 10/12/14/16 bit |
| Angular Accuracy | ±2 arc-min (16-bit mode) | ±2 arc-min | ±2 arc-min | ±2 arc-min |
| Power Consumption | 300 mW typical | 300 mW typical | 300 mW typical | 300 mW typical |
| Operating Temperature | -40C to +85C | -55C to +125C (military) | -40C to +85C | -40C to +85C |
| Velocity Output (VCO) | Yes | Yes | Yes | Yes |
| ESD Protection | 2,000 V min (Class 2) | 2,000 V min (Class 2) | 2,000 V min (Class 2) | 2,000 V min (Class 2) |
| Pin Compatibility with AD2S82ALP | N/A | Drop-in identical pinout | Identical pinout | Different (28-pin DIP vs 44-pin PLCC) |
| Unit Price (qty-1) | $364.48 | $425-550 (military grade) | $350-380 | $200-260 (older DIP) |
Diferenciadores clave
- User-selectable resolution up to 16 bits in a 44-pin PLCC (frente a AD2S80A (10/12/14/16-bit DIP))
- Military-grade drop-in variant available in same package (frente a AD2S82AHPZ)
- Resolver-based feedback immune to oil, dust, EMI (frente a Optical encoders)
Notas de diseño
Estimated: Place the resolver SIN and COS analog inputs on a guarded analog ground island separated from the digital ground by a 0 ohm ferrite bead at the AGND/DGND pin joins. Keep analog trace lengths under 25 mm and avoid routing SIN/COS over digital signals to preserve ±2 arc-minute accuracy.
Estimated: Bypass each analog supply pin (VCC and VEE) with a 0.1 µF ceramic plus 10 µF tantalum within 5 mm of the IC pins. The VDD +5 V logic supply should have its own 0.1 µF + 10 µF pair. Power-on sequencing of analog supplies before VDD logic prevents latch-up at cold start.
Estimated: The resolver excitation signal source must provide low-distortion sine/cosine drive to the resolver stator; THD below 1% is required to maintain tracking accuracy. Use a dedicated excitation amplifier (e.g., AD2S99 reference frequency generator) rather than a PWM-derived reference to avoid injecting switching noise into the resolver SIN/COS demodulation path.
Estimated: Do not select external R and C bandwidth-setting components without consulting the datasheet formulas. Selecting too-high bandwidth causes the converter to lose lock under mechanical shock; too-low bandwidth prevents tracking of fast acceleration. The datasheet provides lookup tables that trade resolution against maximum tracking rate and reference frequency.
Información de cumplimiento
PLCC-44 lead-free finish variant (AD2S82ALPZ) is RoHS-compliant per Analog Devices product page. AEC-Q100 is not applicable because this is not an automotive-grade IC; for EV traction motor use, validate under ISO 26262 separately. Military variant AD2S82AHPZ is MIL-PRF-38534 screened but not RoHS compliant due to lead-finish requirements.
