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

Overview

TBMA702-Q-LT-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 CN1, and exposes incremental encoder outputs (A/B/Z), PWM, and test signals via CN2. The board includes the MA702 sensor, decoupling capacitors (1µF ×2, 100nF ×1), and unpopulated 2.54mm 8-pin receptacle connectors.

For engineers reviewing the TBMA702-Q-LT-01A datasheet, TBMA702-Q-LT-01A pinout, TBMA702-Q-LT-01A application, or TBMA702-Q-LT-01A equivalent, this board enables rapid functional validation of MA702-based angle sensing in motor commutation, robotics, and servo drive systems - with direct compatibility to EVKT-MagAlpha-MagDiff and EVKT-MACOM evaluation platforms.

Technical Context

The TBMA702-Q-LT-01A implements Board Type 2 architecture per the TBMA User Guide Rev. 1.2. It routes the MA702's core serial interface (VDD, GND, CS, SCLK, MISO, MOSI, TEST) to CN1 and maps configurable I/Os - including IO1–IO6, MGL, and MGH - to CN2 for flexible signal probing and system integration.

This board type omits VFLASH and dedicated U/V/W motor commutation outputs found on Type 1, instead prioritizing general-purpose I/O accessibility and magnetic threshold monitoring (MGL/MGH) - aligning with MA702's dual-output capability for analog-level magnetic field detection alongside digital angle reporting.

Key Specifications

Availability

TBMA702-Q-LT-01A is available at Aetrix Electronics and suitable for servo drives, robotics, and BLDC motor commutation requiring stable component supply and rapid MagAlpha sensor validation.

Supply support for TBMA702-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 sensing solutions, headquartered in Kirkland, WA, with global design and support infrastructure.

TBMA702-Q-LT-01A belongs to MPS's MagAlpha evaluation board family, engineered to accelerate development of contactless angular position sensing in motion control applications - emphasizing mechanical flexibility, interface transparency, and seamless integration with MPS's broader motor control ecosystem.

FAQ

Is TBMA702-Q-LT-01A shipped with populated connectors?

No. TBMA702-Q-LT-01A ships with unpopulated 2.54mm 8-position receptacle footprints (CN1 and CN2). Users must solder compatible connectors - such as Wurth 690367280876 or TE Connectivity 7-2178711-8 - based on their cabling and host interface requirements.

Which MagAlpha sensor is mounted on TBMA702-Q-LT-01A?

The board integrates the MA702 MagAlpha magnetic position sensor - a 14-bit contactless angle sensor with SPI output, programmable magnetic threshold detection (MGL/MGH), and support for both side-shaft and end-of-shaft magnet arrangements.

Does TBMA702-Q-LT-01A support flash programming of the MA702?

No. Unlike Type 1 boards, TBMA702-Q-LT-01A (Type 2) does not route VFLASH and lacks the associated circuitry. Flash programming of the MA702 must be performed using other compatible evaluation hardware or in-system via host-controlled SPI commands if enabled in firmware.

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

Yes. TBMA702-Q-LT-01A is explicitly listed as compatible with the EVKT-MagAlpha-MagDiff evaluation kit, enabling plug-and-play connection for differential magnetic field testing and comparative sensor characterization under controlled flux conditions.

What are the key differences between TBMA702-Q-LT-01A and TBMA700-Q-LT?

TBMA702-Q-LT-01A (Type 2) exposes MA702-specific I/Os like IO1–IO6 and MGL/MGH, while TBMA700-Q-LT (Type 1) provides U/V/W motor commutation outputs and VFLASH. Their schematics, BOMs, and pin mappings differ fundamentally to match respective sensor capabilities and target use cases.

Does TBMA702-Q-LT-01A include onboard magnets or magnet fixtures?

No. The board contains no integrated magnets or mechanical fixtures. Users must supply external diametrically magnetized magnets - such as MPS MAG10 series cylinder or ring magnets - and align them per MA702's mechanical specification for accurate angle measurement.