Monolithic Power Systems Inc. TBMA734-Q-RD-00A

Overview

TBMA734-Q-RD-00A from Monolithic Power Systems is a dedicated evaluation board for the MA734 MagAlpha magnetic position sensor, supporting side-shaft and end-of-shaft mounting configurations. It provides SPI interface access (VDD, GND, CS, SCLK, MISO, MOSI), test functionality, and outputs including IRQ, ERR, NVM, MGL, and MGH - enabling rapid validation of angle sensing in motor control and encoder applications.

For engineers reviewing the TBMA734-Q-RD-00A datasheet, TBMA734-Q-RD-00A pinout, TBMA734-Q-RD-00A application, or TBMA734-Q-RD-00A equivalent, this board delivers verified signal routing, documented connector register mapping, and direct compatibility with MagAlpha sensor firmware and EVKT-MagAlpha-MagDiff evaluation infrastructure.

Technical Context

This Type 5 TBMA board implements a fixed-layout long-format (LT) test platform optimized for the MA734 sensor, featuring 200Ω series resistors on MISO/MOSI/SCLK lines and 10pF C0G decoupling capacitors to suppress high-frequency noise during SPI communication. The board includes two unpopulated 8-pin 2.54mm headers (CN1/CN2) with defined pin registers aligned to MA734's functional I/O set.

It supports both active-mode operation and diagnostic monitoring via dedicated outputs: IRQ signals angle change events, ERR reports internal faults, NVM indicates non-volatile memory status, while MGL/MGH provide magnetic field level thresholds - all accessible without soldering or modification.

Key Specifications

Availability

TBMA734-Q-RD-00A is available at Aetrix Electronics and suitable for servo drives, robotics, BLDC motor commutation, and incremental encoder development requiring stable component supply and repeatable sensor evaluation.

Supply support for TBMA734-Q-RD-00A 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.

TBMA734-Q-RD-00A belongs to the MagAlpha evaluation board family, engineered specifically to accelerate development of contactless angular position sensing in motion control systems using MPS's integrated Hall-effect sensor ICs.

FAQ

What sensor does TBMA734-Q-RD-00A support?

TBMA734-Q-RD-00A is designed exclusively for the MA734 MagAlpha magnetic position sensor. It mounts the MA734 in a long-format (LT) configuration and routes all its functional pins - including IRQ, ERR, NVM, MGL, and MGH - to accessible headers without modification or adaptation.

Does TBMA734-Q-RD-00A include connectors or require assembly?

No, TBMA734-Q-RD-00A ships as an assembled PCB with the MA734 sensor, decoupling capacitors (1µF and optional 100nF), and 200Ω/10pF signal conditioning components pre-soldered. Connectors CN1 and CN2 are unpopulated - users must add their own 2.54mm 8-pin receptacles or use pogo-pin fixtures.

How does TBMA734-Q-RD-00A differ from other TBMA board types?

TBMA734-Q-RD-00A is Type 5, distinguished by its specific pin mapping (e.g., IRQ on CN2.2, ERR on CN2.5, MGL/MGH on CN2.7/CN2.8) and inclusion of three 200Ω series resistors and three 10pF C0G capacitors on SPI lines - unlike Type 1 (U/V/W/A/B/Z outputs) or Type 6 (SSI/PWM/encoder outputs).

Can TBMA734-Q-RD-00A be used with EVKT-MagAlpha-MagDiff?

Yes - TBMA734-Q-RD-00A is explicitly listed as compatible with the EVKT-MagAlpha-MagDiff evaluation kit. Its CN1/CN2 pinout aligns with the kit's interface definition, allowing direct connection for sensor characterization, firmware flashing, and real-time angle data capture via SPI.

Is there onboard power regulation or level shifting?

No - TBMA734-Q-RD-00A has no voltage regulators, LDOs, or level shifters. It requires a clean external 3.3V supply connected to CN1.1 (VDD); all I/O signals operate at 3.3V logic levels and must interface directly with 3.3V-compatible host controllers.