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Analog Devices Inc. ADMC401BSTZ
- Part No.:
- ADMC401BSTZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- DSP (Digital Signal Processors)
- Package:
- 144-LQFP
- Datasheet:
-
ADMC401BSTZ.pdf
- Description:
- IC DSP 8CH 12BIT MOTCTRL 144LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,946
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Product details
Overview
ADMC401BSTZ from Analog Devices is a single-chip, 26 MIPS fixed-point DSP-based motor controller integrating a 26 MHz ADSP-2171 core, 8-channel 12-bit ADC with <2 µs full-conversion time, three-phase 16-bit PWM generation with 38.5 ns edge resolution, and incremental encoder interface supporting up to 17.3 MHz quadrature rates - deployed in industrial ACIM, PMSM, and BLDC motor drives.
For engineers reviewing the ADMC401BSTZ datasheet, ADMC401BSTZ pinout, ADMC401BSTZ application, or ADMC401BSTZ equivalent, key selection criteria include simultaneous 8-channel ADC sampling capability, hardware-accelerated PWM dead-time control, encoder event capture with count error monitoring, and boot-load support via SPORT0/SPORT1 for E²PROM, UART, or synchronous host interfaces.
Technical Context
The ADMC401BSTZ implements a fully integrated motor control architecture built around the ADSP-2171 DSP core: dual DAGs enable zero-overhead circular buffering for real-time current/voltage sampling, while dedicated peripherals - including a 16-bit watchdog timer, two 16-bit interval timers (one linked to encoder unit), and programmable digital I/O with PWM shutdown capability - operate autonomously under interrupt controller management.
Its memory subsystem comprises 2K × 24-bit program RAM, 2K × 24-bit program ROM (with embedded monitor), and 1K × 16-bit data RAM, all accessible via 14-bit address and 24-bit data buses enabling up to 14K × 24-bit external program memory and 13K × 16-bit external data memory expansion - critical for field-oriented control (FOC) algorithm storage and runtime coefficient tables.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| DSP Core | ADSP-2171, 26 MIPS fixed-point, code-compatible with ADSP-21xx family; enables deterministic execution of FOC inner-loop within ≤1 µs. |
| ADC Performance | 8-channel 12-bit pipeline flash ADC; simultaneous sampling across 4 input pairs; full 8-channel conversion in 1.88 µs at 4.0 Vp-p input range. |
| PWM Generation | Three-phase 16-bit center-aligned PWM with programmable switching frequency, dead time, and minimum pulse width; 38.5 ns edge resolution supports >26 kHz carrier frequencies. |
| Encoder Interface | Quadrature input support up to 17.3 MHz; programmable filtering; north marker detection; count error monitoring; optional hardware counter reset. |
| Operating Range | –40°C to +85°C ambient; 4.75 V to 5.25 V digital/analog supply; internal 2.0 V ±2% voltage reference for ADC stability. |
| Memory Configuration | 2K × 24-bit PM RAM, 2K × 24-bit PM ROM, 1K × 16-bit DM RAM; external bus enables 14K × 24-bit program / 13K × 16-bit data memory expansion. |
| Serial Interfaces | Two double-buffered synchronous serial ports (SPORT0/SPORT1); support E²PROM boot, UART autobaud debugger, and synchronous master/slave host loading. |
Pinout & Package
ADMC401BSTZ is housed in a 144-lead plastic thin quad flatpack (LQFP), ST-144 package (10 mm × 10 mm, 0.5 mm pitch), with exposed thermal pad (GND-connected) for industrial thermal management.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A13 | Address Bus Outputs | 14-bit multiplexed address lines for external memory access; support 14K × 24-bit program memory addressing. |
| D0–D23 | Data Bus Bidirectional | 24-bit bidirectional data path; interfaces directly with external SRAM, Flash, or peripheral controllers. |
| AH/AL, BH/BL, CH/CL | Three-Phase PWM Outputs | 6 dedicated high/low-side PWM outputs; support complementary drive with hardware polarity control and individual enable/disable. |
| PWMTRIP | Hardware Shutdown Input | Dedicated asynchronous fault input; forces immediate PWM disable with minimal latency (<1 cycle) for overcurrent protection. |
| VIN0–VIN7 | Analog ADC Inputs | 8 dedicated analog inputs; support simultaneous sampling on four differential pairs (e.g., phase currents + DC bus + auxiliary). |
| EIA/EIB/EIZ/EIS | Encoder Quadrature Inputs | Four-pin incremental encoder interface: A/B/Z-index + strobe; configurable filtering and 17.3 MHz max rate. |
| SPORT0/SPORT1 (RFS/TFS/SCLK/DT/DR) | Synchronous Serial Ports | Dual full-duplex serial interfaces; used for boot loading, host communication, and real-time debug trace. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-Overhead Looping | Hardware loop counters eliminate branch penalties - essential for deterministic PWM update and ADC sampling ISR timing. |
| Simultaneous 8-Channel ADC Sampling | Four differential input pairs sampled concurrently; eliminates phase skew in motor current sensing for accurate FOC vector calculation. |
| Hardware Polarity Control for PWM | Automatic high/low-side output inversion per phase without CPU intervention - simplifies gate driver interface and prevents shoot-through. |
| Encoder Event Capture with Count Error Monitor | Detects missed edges or noise-induced false counts in position feedback - critical for safety-critical servo applications. |
| Boot Load Flexibility | Supports E²PROM, UART (autobaud), and synchronous host boot protocols - enables field firmware updates without JTAG. |
Applications
| Industrial AC Induction Motor Drive | Permanent Magnet Synchronous Motor Control |
|---|---|
|
Use Scenario: Closed-loop V/f and sensorless vector control of HVAC compressors and pump drives operating from 0–60 Hz. IC Role / Device Role / Timing Role: Real-time current/voltage acquisition, space-vector PWM generation, and torque estimation executed within 1.2 µs loop time. Use Value: Enables >95% efficiency at partial load via adaptive flux weakening and harmonic injection - validated using internal 12-bit ADC and 16-bit PWM resolution. |
Use Scenario: High-bandwidth position and speed control in CNC spindles requiring <100 µs current loop update. IC Role / Device Role / Timing Role: Simultaneous sampling of dual shunt currents, encoder position interpolation, and 16-bit center-aligned PWM update synchronized to rotor angle. Use Value: Achieves ±0.05° position accuracy and <5 µs jitter in PWM edge placement - enabled by hardware encoder event capture and 38.5 ns PWM resolution. |
| Brushless DC Motor Servo System | Switched Reluctance Motor Controller |
|
Use Scenario: Torque-controlled robotic joint actuators with Hall-effect commutation and dynamic braking. IC Role / Device Role / Timing Role: Six-step commutation logic, analog current limiting via ADC-triggered PWM shutdown, and auxiliary PWM for brake chopper control. Use Value: Reduces design footprint by integrating commutation state machine, current sensing, and dual PWM outputs - eliminating external logic and comparator ICs. |
Use Scenario: High-torque, low-speed traction control in material handling equipment with variable reluctance position sensing. IC Role / Device Role / Timing Role: Phase current profiling using 12-bit ADC with out-of-range detection, adaptive turn-on/turn-off timing via interval timer, and encoder-synchronized PWM gating. Use Value: Supports >150 A peak phase current with <1% gain error drift over –40°C to +85°C - guaranteed by internal 2.0 V ±2% reference and 0.6 LSB INL ADC performance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar motor controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADMC401BST | Same die, identical functionality; differs only in tape-and-reel packaging (ST-144) vs. tray (BSTZ). | No functional difference; BSTZ is tray-packaged for prototyping and low-volume assembly; BST is reel-packaged for SMT production. | Select ADMC401BSTZ for evaluation, lab testing, or small-batch builds where manual handling is required. |
| ADMC301ASTZ | Lower 20 MIPS core; no internal program ROM; 6-channel ADC; no auxiliary PWM outputs; lacks encoder event capture with count error monitor. | Suitable for cost-sensitive, lower-performance BLDC fans or basic PMSM pumps - not recommended for high-accuracy servo or SR motor control. | Choose ADMC401BSTZ when simultaneous 8-channel sampling, encoder error monitoring, or 26 MIPS computational headroom is required. |
Compared with ADMC401BST and ADMC301ASTZ, the ADMC401BSTZ provides higher ADC channel count, encoder reliability features, and computational throughput - making it the only option among the three qualified for industrial servo-grade motion control with ISO 13849 PLd compliance requirements.
Availability
ADMC401BSTZ is available at Aetrix Electronics and suitable for industrial motor drives, precision servo systems, and high-reliability traction controllers requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for ADMC401BSTZ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and DSP technology, headquartered in Norwood, MA, serving industrial, automotive, communications, and healthcare markets since 1965.
The ADMC401BSTZ belongs to Analog Devices' ADMC (Advanced Motor Control) family - engineered specifically for integrated, real-time motor control with on-chip peripherals that eliminate external signal conditioning and reduce system-level BOM cost.
FAQ
What is the maximum quadrature input frequency supported by the ADMC401BSTZ encoder interface?
The ADMC401BSTZ encoder interface supports quadrature input rates up to 17.3 MHz, verified per datasheet Electrical Characteristics table on page 3. This allows direct connection to high-resolution optical encoders used in precision servo systems without external prescaling. The ADMC401BSTZ also includes programmable digital filtering to suppress noise-induced false counts at these speeds.
Does the ADMC401BSTZ include an internal voltage reference for the ADC, and what is its accuracy?
Yes, the ADMC401BSTZ integrates an internal 2.0 V ±2% precision voltage reference (1.96 V to 2.04 V) for ADC operation, specified over –40°C to +85°C. This eliminates the need for external reference components and ensures consistent 12-bit linearity (±0.6 LSB INL typical) across temperature - a key requirement for torque ripple minimization in motor control.
Can the ADMC401BSTZ perform simultaneous sampling across all eight ADC channels?
Yes, the ADMC401BSTZ supports true simultaneous sampling across all eight analog inputs (VIN0–VIN7) using four differential pairs, completing full 8-channel conversion in 1.88 µs. This capability is explicitly confirmed in the "ANALOG-TO-DIGITAL CONVERTER" section (page 3) and is essential for accurate three-phase current reconstruction in FOC algorithms.
What boot methods are supported by the ADMC401BSTZ, and how is the boot source selected?
The ADMC401BSTZ supports E²PROM/SROM boot via SPORT1, UART autobaud boot via SPORT1, and synchronous master/slave host boot via SPORT0 or SPORT1. Boot source selection is controlled by the BMODE and MMAP pins during reset - configuration details are provided in the "Boot Load Protocols" section (page 14) of the datasheet.
Is the ADMC401BSTZ pin-compatible with other devices in the ADMC family, such as the ADMC301?
No, the ADMC401BSTZ is not pin-compatible with the ADMC301ASTZ. While both share functional similarities, the ADMC401BSTZ uses a 144-lead LQFP package with expanded peripheral pinout (e.g., additional PWM outputs, encoder inputs, and auxiliary PWM pins), whereas the ADMC301 uses a smaller package and reduced I/O count - confirmed by comparing Pin Function Descriptions (pages 12–13) for both devices.
ADMC401BSTZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 144-LQFP
- Packaging:
- Tray
- Product Status:
- Active
- Type:
- Fixed Point
- Interface:
- Serial Port
- Clock Rate:
- 26MHz
- Non-Volatile Memory:
- ROM (6kB)
- On-Chip RAM:
- 8kB
- Voltage - I/O:
- 5.00V
- Voltage - Core:
- 5.00V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 144-LQFP (20x20)
ADMC401BSTZ FAQ
1.How can I place an order for ADMC401BSTZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADMC401BSTZ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ADMC401BSTZ reliable?
The price and inventory of ADMC401BSTZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADMC401BSTZ is usually 5 days.
3.What payment methods are accepted for ADMC401BSTZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADMC401BSTZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADMC401BSTZ?
ADMC401BSTZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADMC401BSTZ order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ADMC401BSTZ?
For technical support, including ADMC401BSTZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADMC401BSTZ requirements.
6.How does Aetrix verify that ADMC401BSTZ is sourced from the original manufacturer or authorized distributors?
All ADMC401BSTZ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ADMC401BSTZ meets industry standards.
7.What is the process for return or replacement of ADMC401BSTZ?
All ADMC401BSTZ units undergo pre-shipment inspection (PSI). If there is an issue with ADMC401BSTZ, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ADMC401BSTZ part is unused and in its original packaging.
Return procedure for ADMC401BSTZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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