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

Overview

TBMA704-Q-RD-01A from Monolithic Power Systems is a long-format (LT) evaluation board designed specifically for the MA704 MagAlpha magnetic position sensor. It provides side-shaft and end-of-shaft mounting configurations, supports SPI interface and incremental encoder outputs (A/B/Z), and enables rapid functional validation of angle sensing in motor control systems.

For engineers reviewing the TBMA704-Q-RD-01A datasheet, TBMA704-Q-RD-01A pinout, TBMA704-Q-RD-01A application, or TBMA704-Q-RD-01A equivalent, this board delivers direct access to MA704 sensor signals-including PWM, TEST, and serial interface lines-while supporting integration with EVKT-MagAlpha-MagDiff and EVKT-MACOM evaluation platforms.

Technical Context

The TBMA704-Q-RD-01A implements Board Type 1 architecture per the TBMA User Guide Rev. 1.2, featuring dual 8-pin 2.54 mm headers (CN1/CN2), onboard 1 µF and 100 nF decoupling capacitors, and no populated connectors-requiring user-supplied 2.54 mm receptacles (e.g., Wurth 690367280876). It routes all MA704 pins-including VDD, GND, CS, SCLK, MISO, MOSI, VFLASH, PWM, TEST, and incremental outputs A/B/Z/U/V/W-to accessible test points.

This board type supports both side-shaft and end-of-shaft mechanical configurations and is electrically compatible with the MA704's native 3.3 V supply, SPI communication protocol, and optional motor commutation (U/V/W) or incremental encoder (A/B/Z) output modes as defined in the MA704 datasheet.

Key Specifications

Availability

TBMA704-Q-RD-01A is available at Aetrix Electronics and suitable for servo drives, robotics, and brushless DC (BLDC) motor commutation requiring stable component supply, quick-turn evaluation, and repeatable magnetic position sensor validation.

Supply support for TBMA704-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 design centers across Asia and North America.

TBMA704-Q-RD-01A belongs to the TBMA family of MagAlpha sensor evaluation boards - engineered to accelerate development of precision angle-sensing applications in automotive, industrial, and motor control systems.

FAQ

What sensor does TBMA704-Q-RD-01A support?

TBMA704-Q-RD-01A is configured for the MA704 MagAlpha magnetic position sensor, a 14-bit absolute angle sensor with SPI and incremental (A/B/Z) outputs. The board mounts the MA704 directly and routes all its functional pins to CN1 and CN2 headers as specified in Table 3 of the TBMA User Guide Rev. 1.2.

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

No - TBMA704-Q-RD-01A ships as an assembled board without populated connectors. Users must supply two 2.54 mm pitch, 8-position receptacle connectors (e.g., Wurth 690367280876 or TE Connectivity 7-2178711-8) to interface with host controllers or evaluation kits.

Can TBMA704-Q-RD-01A be used for end-of-shaft and side-shaft testing?

Yes - the TBMA704-Q-RD-01A uses the long (LT) mechanical format with edge-mounted MA704, enabling both end-of-shaft and side-shaft magnet coupling configurations. Its layout accommodates standard diametrically magnetized cylinder or ring magnets per MPS MAG10 family specifications.

Which evaluation kits is TBMA704-Q-RD-01A compatible with?

TBMA704-Q-RD-01A is explicitly compatible with the EVKT-MagAlpha-MagDiff and EVKT-MACOM evaluation kits. Pin mapping, signal naming, and power requirements align directly - allowing seamless plug-and-play operation without adapter hardware or firmware modification.

What are the key interface signals available on CN2?

CN2 provides MA704's functional outputs: pins 1–3 (U/V/W) for motor commutation, pins 4–6 (A/B/Z) for incremental encoder signals, pin 7 (TEST) for diagnostics, and pin 8 (PWM) for pulse-width modulated angle output - all accessible without soldering or breakout.