Monolithic Power Systems Inc. TBMA704-Q-LT-01A

Overview

TBMA704-Q-LT-01A from Monolithic Power Systems is a long-format (LT) evaluation board designed specifically for the MA704 MagAlpha magnetic position sensor. It supports both side-shaft and end-of-shaft mounting configurations, provides SPI interface access via two 8-pin headers (CN1/CN2), and integrates decoupling capacitors and a pre-mounted MA704 sensor for rapid functional validation in motor commutation and encoder applications.

For engineers reviewing the TBMA704-Q-LT-01A datasheet, TBMA704-Q-LT-01A pinout, TBMA704-Q-LT-01A application, or TBMA704-Q-LT-01A equivalent, this board enables immediate hardware-level testing of MA704 angle sensing performance-including incremental A/B/Z outputs, PWM, and test/debug signal routing-without custom PCB design or sensor soldering.

Technical Context

The TBMA704-Q-LT-01A implements Board Type 1 architecture per the TBMA User Guide Rev. 1.2, matching the schematic and pin register layout defined for MA700-series sensors. It routes all core SPI signals (CS, SCLK, MISO, MOSI), power (VDD, GND, VFLASH), and configurable I/Os (U/V/W, A/B/Z, PWM, TEST) to dual 2.54 mm pitch headers.

This board type does not include on-board level-shifting or voltage regulation; it requires an external 3.3 V supply and assumes host MCU control of serial communication timing and flash programming sequences. The MA704 sensor is pre-soldered and electrically validated per MPS factory test flow.

Key Specifications

Availability

TBMA704-Q-LT-01A is available at Aetrix Electronics and suitable for servo drives, robotics, and BLDC motor commutation requiring stable component supply, quick-turn evaluation, and repeatable sensor characterization across production batches.

Supply support for TBMA704-Q-LT-01A 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

Monolithic Power Systems (MPS) is a fabless semiconductor company specializing in high-performance power management and motion sensing solutions, with design centers across Asia and North America.

TBMA704-Q-LT-01A belongs to the TBMA family of MagAlpha evaluation boards, engineered to accelerate development of contactless angular position sensing in motor control, automotive, and industrial automation systems.

FAQ

Does TBMA704-Q-LT-01A include connectors?

No, TBMA704-Q-LT-01A ships with unpopulated 2.54 mm pitch 8-pin receptacle footprints (CN1 and CN2). Users must supply compatible 0.100" headers-such as Wurth 690367280876 or TE Connectivity 7-2178711-8-to establish host MCU connections.

Which MagAlpha sensor is mounted on this board?

The board is populated with the MA704 magnetic position sensor, a 14-bit resolution, SPI-output angle sensor supporting incremental A/B/Z and PWM outputs, with diametric magnet compatibility and ±0.1° typical angle error over temperature.

Can TBMA704-Q-LT-01A be used for end-of-shaft and side-shaft configurations?

Yes-the LT (long) mechanical form factor places the MA704 sensor at the board edge, enabling direct mounting onto rotating shafts in either end-of-shaft (axial field) or side-shaft (radial field) orientation without rework or adapter plates.

Is VFLASH required for normal operation?

No-VFLASH (CN1.3) is only active during firmware flashing operations. During standard angle measurement, the MA704 operates from the 3.3 V VDD rail (CN1.1); VFLASH remains unpowered and disconnected.

What are the key I/O functions accessible on CN2?

CN2 provides U/V/W motor commutation outputs, A/B/Z incremental encoder signals, PWM, and TEST pin-enabling direct connection to motor gate drivers, quadrature counters, or oscilloscope probes for real-time waveform analysis of angle-derived signals.

Is the TBMA704-Q-LT-01A RoHS-compliant?

Yes-all components on the board-including the MA704 sensor, Murata GRM155C81A105KA12D capacitors, and PCB-are lead-free, halogen-free, and compliant with EU RoHS Directive 2011/65/EU.