Monolithic Power Systems Inc. TBMA702-Q-RD-01A

Overview

TBMA702-Q-RD-01A from Monolithic Power Systems is a long-format (LT) evaluation board designed specifically for the MA702 MagAlpha magnetic position sensor. It supports both side-shaft and end-of-shaft mounting configurations, provides SPI interface access via dual 8-pin headers (CN1/CN2), and integrates decoupling capacitors and test points for rapid functional validation in motor control and encoder applications.

For engineers reviewing the TBMA702-Q-RD-01A datasheet, TBMA702-Q-RD-01A pinout, TBMA702-Q-RD-01A application, or TBMA702-Q-RD-01A equivalent, this board enables immediate evaluation of MA702 angle-sensing performance-including incremental A/B/Z outputs, PWM, and serial communication-without custom PCB design or sensor-level bring-up overhead.

Technical Context

The TBMA702-Q-RD-01A implements Type 2 board architecture per the TBMA User Guide Rev. 1.2, matching the MA702's pinout and signal routing requirements. It exposes all essential MagAlpha interface signals-including CS, SCLK, MISO, MOSI, TEST, MGH, and MGL-via two unpopulated 2.54 mm pitch 8-pin receptacle connectors (Wurth/TE Connectivity compatible).

It supports direct connection to the EVKT-MagAlpha-MagDiff evaluation kit and EVKT-MACOM, enabling system-level testing with external host controllers. The board includes one 1 µF X6S 0402 ceramic capacitor (C1) and one optional 100 nF X7R 0402 capacitor (C2), aligned with MA702 power integrity recommendations.

Key Specifications

Availability

TBMA702-Q-RD-01A is available at Aetrix Electronics and suitable for servo drives, robotics, and BLDC motor commutation requiring stable component supply, fast prototyping turnaround, and seamless integration with existing MagAlpha evaluation ecosystems.

Supply support for TBMA702-Q-RD-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 sensing solutions, with a focus on efficiency, integration, and reliability across industrial and automotive markets.

TBMA702-Q-RD-01A belongs to the TBMA test board product line, engineered to accelerate development for MagAlpha magnetic position sensors by providing standardized, sensor-matched hardware for functional verification and system integration.

FAQ

Is TBMA702-Q-RD-01A pre-populated with the MA702 sensor?

Yes. The board ships with the MA702 MagAlpha magnetic position sensor fully assembled and soldered, along with required decoupling capacitors (C1 = 1 µF, C2 = optional 100 nF). No additional sensor placement or rework is needed before use.

Which connector types are supported for CN1 and CN2?

CN1 and CN2 accept standard 2.54 mm pitch, 8-position surface-mount receptacle connectors - compatible with Wurth Electronics 690367280876 and TE Connectivity 7-2178711-8. These connectors are not populated on the board and must be added by the user.

Does TBMA702-Q-RD-01A support both side-shaft and end-of-shaft configurations?

Yes. As a Type 2 LT board, TBMA702-Q-RD-01A is mechanically designed for dual mounting orientations - the sensor is positioned at the board edge to accommodate either side-shaft (radial field) or end-of-shaft (axial field) magnet coupling per MA702 application requirements.

Can TBMA702-Q-RD-01A be used with the EVKT-MagAlpha-MagDiff kit?

Yes. The board is explicitly listed as compatible with the EVKT-MagAlpha-MagDiff evaluation kit per the TBMA User Guide Rev. 1.2, enabling plug-and-play connection for synchronized sensor testing, magnetic field characterization, and differential output validation.

What signals are accessible on CN2 for the MA702 sensor?

CN2 provides IO1–IO6, MGL, and MGH pins mapped to MA702 functions: IO1 (Pin 1), IO5 (Pin 9), IO4 (Pin 6), IO2 (Pin 2), IO3 (Pin 3), plus MGL (magnetic low-level detection) and MGH (magnetic high-level detection) - all defined in the MA702 datasheet.

Are decoupling capacitors included on the board?

Yes. C1 (1 µF, Murata GRM155C81A105KA12D) is populated; C2 (100 nF, Murata GRM155R71C104KA88J) is optional and unpopulated by default but included in the BOM for user-addition if needed for enhanced noise immunity.