OPA387中文资料Ultra-high precision (2 uV), zero-drift (0.003 uV/C), low-input-bias-current op amp (single)数据手册TI规格书

描述 Description

The OPA387, OPA2387, and OPA4387 ( OPAx387) family of precision amplifiers offers state-of-the-art performance. With zero-drift technology, the OPAx387 offset voltage and offset drift provide unparalleled long-term stability. With a mere 570 µA of quiescent current, the OPAx387 are able to achieve 5.7 MHz of bandwidth, a broadband noise of 8.5 nV/√Hz, and a 1/f noise at 177 nVPP. These specifications are crucial to achieve extremely-high precision and no degradation of linearity in 16-bit to 24-bit analog to digital converters (ADCs). The OPAx387 feature flat bias current over temperature; therefore, little to no calibration is needed in high input impedance applications over temperature.

All versions are specified over the industrial temperature range of –40°C to +125°C.

特性 Features

• Ultra-low offset voltage: ±2 µV (maximum, tested)
• Zero drift: ±0.003 µV/°C
• Low-input bias current: 150 pA (maximum, tested)
• Low noise: 8.5 nV√Hz at 1 kHz
• No 1/f noise: 177 nVPP (0.1 Hz to 10 Hz)
• Common-mode input range ±100 mV beyond supply rails
• Gain bandwidth: 5.7 MHz
• Quiescent current: 570 µA per amplifier
• Single supply: 1.7 V to 5.5 V
• Dual supply: ±0.85 V to ±2.75 V
• EMI and RFI filtered inputs