INA351中文资料具有集成电压基准的微型 (1.5mm × 2mm) 低功耗 (100µA) 仪表放大器数据手册TI规格书

描述 Description

INA351 is a selectable-gain instrumentation amplifier with integrated reference buffer that offers four gain options across INA351ABS and INA351CDS variants available in small packages. INA351ABS has gain options of 10 or 20 and INA351CDS has gain options of 30 or 50. These gain options can be selected by toggling the gain select (GS) pin. INA351 is an excellent choice for bridge-type sensing and for differential to single-ended conversion applications.

Built with precision matched integrated resistors, INA351 saves on BOM costs, pick-and-place machine handling costs, and board space by removing the need for precise or closely-matched external resistors. The INA351 can interface directly to low-speed, 10-bit to 14-bit, analog-to-digital converters (ADC) and is an excellent choice for replacing discrete implementation of instrumentation amplifiers built with commodity amplifiers and discrete resistors.

Designed with the three-amplifier architecture, INA351 is optimized for delivering performance. The device achieves 86 dB of minimum CMRR and an accurate 0.1% of maximum gain error, along with 1.3 mV of maximum offset across all gain options, while consuming just 135 µA of maximum quiescent current. INA351 has an integrated shutdown option to turn off the amplifier when idle for additional power savings in battery powered applications.

特性 Features

• Designed for size, cost, and power conscious applications
• G = 10 or G = 20 (INA351ABS)
• Space saving ultra-small package options
• 8-pin WSON (DSG) – 4 mm2
• Optimized performance for 10-bit to 14-bit systems
• Offset voltage: 0.2 mV (typ) across all gains
• 0.0015% for G = 10, G = 50
• Bandwidth: 100 kHz for G = 10 (typ)
• Optimized quiescent current: 110 µA (typ)
• Supply range: 1.8 V (±0.9 V) to 5.5 V (±2.75 V)
• Specified temperature range: –40°C to 125°C