company blog about TI PGA308EVM Mixed-Signal Programmable Bridge Sensors Evaluation Board

TI PGA308EVM Mixed-Signal Programmable Bridge Sensors Evaluation Board

Shenzhen Mingjiada Electronics Co., Ltd., as a professional electronic component supplier, maintains substantial stock of PGA308EVM Mixed-Signal Programmable Bridge Sensor Evaluation Boards. The PGA308EVM evaluation board serves as a comprehensive hardware platform specifically designed for evaluating the PGA308 mixed-signal programmable gain amplifier, finding extensive application in automotive systems, industrial weighing systems, pressure detection, and medical equipment.

【Core Features of PGA308EVM】

The PGA308EVM evaluation board constitutes a comprehensive hardware platform specifically engineered for evaluating the PGA308 mixed-signal programmable gain amplifier. This evaluation module comprises two boards: the PGA308 test board and a USB data acquisition platform. The PGA308EVM test board houses the PGA308 chip, terminal blocks for external connections, several device configuration jumpers, and auxiliary circuitry. This test board enables comprehensive design verification prior to prototyping. The USB data acquisition platform features an 8052 microcontroller with an integrated USB interface, generating the single-wire signal required for communication with the PGA308. The platform further incorporates: a 3V/5V programmable linear regulator, a power control switch, general-purpose digital I/O interfaces, a DAC output, and an A/D input.

The core functionality of the PGA308 lies in the digital calibration and signal conditioning of bridge sensors. This amplifier employs auto-zero technology, enabling it to maintain exceptional accuracy and noise immunity across the industrial temperature range of -40°C to +125°C.

The chip operates within a +2.7V to +5.5V voltage range, supporting single-supply operation. Its key value lies in seven one-time programmable (OTP) memory banks, capable of storing gain and offset calibration parameters with four reprogrammable cycles.

【PGA308EVM Core Technology】

The PGA308 employs auto-zero technology to deliver outstanding precision and noise immunity across the industrial temperature range of -40°C to +125°C, operating within a voltage range of +2.7V to +5.5V.

The chip provides seven sets of one-time programmable (OTP) memory for storing gain and offset calibration parameters, featuring a dedicated power-on reset (POR) OTP library supporting up to four reprogramming cycles.

The fault monitor detects issues such as overload, burnout, and system failures. Upper and lower limit ratio limiting provides additional means for system-level diagnostics.

【PGA308EVM Features】

Flexible hardware supports complete prototype testing

EVM hardware generates and measures all necessary signals

Provides sensor calibration software

Equipped with external sensor interface

Sensor emulator enables out-of-the-box testing

【PGA308EVM Market Applications】

The PGA308EVM evaluation board targets diverse industrial and automotive applications, particularly sensor systems requiring high-precision signal processing.

Bridge sensor applications represent one of the primary use cases for the PGA308EVM. For remote 4-20mA transmitter design, strain measurement, load sensing, and weighing systems, this evaluation board delivers a comprehensive design verification solution.

Within automotive sensing, the PGA308-Q1 automotive-grade variant specifically addresses the demanding operational environments of automotive electronics. Mingjiada Electronics possesses specialised expertise in supplying components for such high-reliability applications.

【PGA308EVM Product Advantages】

The PGA308 evaluation board delivers three core benefits to engineers, directly translating into enhanced development efficiency and reduced risks.

Rapid prototyping capabilities enable engineers to comprehensively test the PGA308's functional characteristics prior to formal product design. The board's integrated USB interface and Windows-based graphical software facilitate swift configuration and data acquisition.

Precise signal conditioning represents a key advantage of this evaluation board. The PGA308EVM offers both coarse and fine offset adjustment methods, complemented by optional gain control to implement real-time or preset calibration strategies.

System fault detection mechanisms ensure reliability in practical applications. The on-chip fault monitor detects issues such as overload, sensor breakage, and system failures, while upper/lower limit proportional limiting provides additional system-level diagnostics.

Mingjiada Electronics maintains long-term supply of other TI evaluation board components, including but not limited to the following models:

TMUX-8RQX-EVM

TMUX1575EVM

TMUX646EVM

TMUXRTJ-RRQEVM

TPS22902BEVM

TPS22922BEVM

TPS22922EVM

TPS272C45EVM

TPS7H2221EVM

TS3A227E-EVM

TS3DDR4000-EVM

TS3USB221EVM

TSU6721EVM

DS25CP102EVK

MUX36D04EVM-PDK