Data di Pubblicazione: 2016-01-05
The INA188 is launched as the industry's first new zero-drift 36V instrumentation amplifier and has been introduced by Texas Instruments. This device provides high-precision, accurate DC and low-frequency measurements in applications such as test and measurement, medical and industrial process control equipment. It also eliminates 1 / f angles and has class-leading offset drift for accurate measurements across the extended industrial temperature range.
Key Features: 1-The industry's lowest offset drift optimizes long-term temperature stability: The zero-drift architecture used in the INA188 provides high accuracy for high-voltage precision measurement applications. Compared to competing solutions, it provides an offset voltage of 25µV and a 33% lower offset voltage drift of 80nV / C, providing long-term temperature stability over the life of the end device. 2 – No 1 / f corners and low DC noise for accurate measurements at low frequencies: The INA188 produces only 250nVPP noise in the 0.1Hz to 10Hz range, and there is no 1 / f corner frequency between broadband and near DC. When combined with the INA188's 12.5nV / √Hz wideband noise floor, this amplifier provides unparalleled accuracy for low frequency applications. 3-High voltage ensures signal integrity: Capable of operating at voltages up to 36V, the INA188 helps maintain signal integrity across the extended temperature range by allowing greater gain than low voltage instrumentation amplifiers. Cultivate design tools and support
Engineers designing with the INA188 amplifier can quickly achieve the best accuracy of their system using the following support tools: A – Evaluation Module (EVM): Users can use the general-purpose instrumentation amplifier EVM (SO8) to evaluate the performance of the INA188. B-Macro Model: Use the free TINA-TI SPICE macro model to verify board-level signal integrity requirements and device behavior. C-TI Design Reference Design: A three-terminal PLC reference design with INA188 converts +/- 10V or +/- 20mA input to a single-ended output voltage of a 5V analog-to-digital converter (ADC). In addition, the design has a REF3225 precision voltage reference integrated circuit (IC). D-Support: Users can visit the TI Precision Amplifier Forum in the TI E2E community to find solutions, get help, share knowledge, and work with other engineers and TI experts to solve problems. E-Vcm and Vout Calculator: A stand-alone downloadable tool for instrumentation amplifiers that plots Vcm and Vout curves based on a designer's specific design requirements (including single or dual power, gain and reference voltage).
Powering INA188-TI offers a complete power management portfolio that supports INA188, including the TPS65130 split-rail DC-DC converter or the LMR70503 SIMPLE SWITCHER buck / boost converter for dual-supply operation. For single-supply operation, the INA188 with LM7705 negative bias generator provides true zero output.
The INA188 is available now in a small integrated circuit (SOIC) package of 4.9mm x 3.91mm. It will be available in a 4mm x 4mm ultra-thin, small outline lead-free (WSON) package beginning in the fourth quarter of 2015.
