TI PGA112EVM-B Single Channels Programmable Gain Amplifier Evaluation Board
Shenzhen Mingjiada Electronics Co., Ltd. is a globally renowned distributor of electronic components, specialising in the supply of genuine TI PGA112EVM-B single-channel programmable gain amplifier evaluation boards. This evaluation board serves as a complete hardware platform specifically designed for engineers to test and validate the performance of the PGA112 series amplifiers.
The PGA112EVM-B evaluation board comprises two fully populated circuit boards, connecting cables, and essential software tools, ready for immediate use upon unpacking. This fully integrated design enables engineers to bypass complex circuit assembly and commence performance evaluation and prototyping directly.
【Core Mission of the PGA112EVM-B Evaluation Module】
The PGA112EVM-B evaluation module provides a fully populated printed circuit board featuring either a PGA112 or PGA113 chip.
The PGA112EVM-B is designed to enable engineers to comprehensively evaluate the performance of these programmable gain amplifiers without the need to build complex test circuits themselves.
The PGA112EVM-B comprises two components: the PGA112_Test_Board, housing the PGA112/113 chip under test alongside supporting circuitry; and the USB DAQ platform board, responsible for generating the digital signals required for communication with the amplifier.
This modular design enables the entire evaluation platform to operate using a single personal computer, significantly streamlining the assessment process.
【Core Highlights of the PGA112EVM-B Evaluation Board】
Technical Essentials for Precise Signal Amplification:
Programmable Gain Design: The PGA112EVM-B supports binary gain values of 1, 2, 4, 8, 16, 64, and 128, enabling optimal matching between sensor output signals and ADC input voltage ranges.
Outstanding Performance Parameters: With an 8V/μs slew rate and 10MHz -3dB bandwidth, the PGA112EVM-B delivers clear signal amplification at G=1. Its rail-to-rail (full-swing) output ensures signal integrity and dynamic range.
Multi-scenario adaptability:
Wide operating voltage range: The evaluation board operates from 2.2V to 5.5V, accommodating diverse power supply environments.
Low power consumption: The main IC draws only 330μA, making it suitable for power-sensitive applications.
Extended temperature range: Stable operation from -40°C to +125°C ensures reliability in demanding environments.
【PGA112EVM-B Outstanding Performance Parameters】
The PGA112 maintains stable operation across the extensive -40°C to +125°C temperature range, a prerequisite for industrial-grade applications.
With gain set to 1, the chip delivers a 10MHz -3dB bandwidth and a slew rate of up to 8V/μs, ensuring rapid signal processing capability.
The PGA112 excels in power consumption, requiring only 330μA for the main IC. It also incorporates a shutdown function, reducing supply current to below 4μA, making it highly suitable for energy-conscious applications.
Regarding precision, the PGA112 achieves a gain switching time of just 200 nanoseconds, with a gain setting time of 2.55 microseconds and an error of only 0.01%. Maximum DC gain error is 0.1% (G ≤ 32), maximum offset voltage is 100 μV, maximum offset drift is 1.2 μV/°C, and noise is as low as 12 nV/√Hz.
【PGA112EVM-B Evaluation Board Hardware Features】
The PGA112EVM-B evaluation board operates within a supply voltage range of 2.2V to 5.5V, fully matching the chip specifications. This enables the board to simulate power supply conditions encountered in diverse practical applications.
Each channel delivers an output current up to 60mA, sufficient to drive a wide range of loads. The board employs a full-swing (rail-to-rail) output configuration, meaning the output signal can approach the supply voltages closely, maximising the ADC's dynamic range.
The PGA112EVM-B evaluation board offers multiple connection options: I²C and general-purpose input/output connections, alongside external connection points for input voltage, reference voltage, and outputs.
Users may select between internal or external power supplies and flexibly configure the use of internal or external I²C communication and input/output signals.
【PGA112EVM-B System Integration Advantages】
The PGA112 series is designed for seamless integration with other TI products, particularly the MSP430 series of ultra-low-power microprocessors.
As a complete signal chain solution, TI also recommends pairing the PGA112 with ADCs such as the ADS8318 and ADS7886, alongside the REF32xx series of voltage references.
These chips share similar power requirements and interface standards, simplifying system design. The evaluation board's SPI serial interface supports daisy-chain functionality, enabling users to control multiple devices in series and streamlining multi-channel system design.
The PGA112EVM-B also provides an internal calibration channel, supporting system-level calibration to enhance overall measurement accuracy.
【PGA112EVM-B Application Domains】
The PGA112EVM-B evaluation board is primarily employed for developing and testing portable data acquisition systems, which typically require processing weak signals from multiple sensors.
In remote meter reading applications (such as smart electricity and water meters), the PGA112EVM-B aids engineers in verifying the reliability and accuracy of signal conditioning circuits.
Automatic gain control represents another significant application domain, where the PGA112EVM-B's rapid and precise gain switching capability is ideally suited for systems requiring dynamic signal amplitude adjustment.
The evaluation board may also be employed in programmable logic controller input module design and handheld test equipment development.
Mingjiada Electronics maintains long-term supply of other TI evaluation board components, including but not limited to the following models:
THS4131EVM
THS4302EVM
THS4303EVM
THS4521EVM
THS4531ADGKEVM
THS4531DGKEVM
THS4541RGTEVM
THS4631DGNEVM
THS6222RHFEVM
THS7314EVM
THS9000EVM
THS9001EVM
TLV1805Q1EVM
TLV1872EVM
TLV3604EVM
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