OPA2387DGKT

The OPA387, OPA2387, and OPA4387 (OPAx387) precision amplifier series offer excellent performance. With zero-drift technology, the OPAx387's offset voltage and offset drift provide excellent long-term stability. Consuming only 570 μA of quiescent current, the OPAx387 can achieve a bandwidth of 5.7 MHz, a broadband noise of 8.5 nV/√Hz, and a 1/f noise of 177 nVPP. These specifications are crucial for achieving ultra-high precision in 16-bit to 24-bit analog-to-digital converters (ADCs) without degrading linearity. The OPAx387 has a flat bias current over the temperature range; therefore, high-input-impedance applications require little calibration over the temperature range. All versions are rated for an operating temperature range of -40°C to +125°C.

Applications

• Electronic thermometer
• Weighing scale
• Temperature transmitter
• Ventilator
• Data acquisition (DAQ)
• Semiconductor test
• Laboratory and field instrumentation
• Commercial networking and server PSU
• Analog input module
• Pressure transmitter

Key features

• Ultra-low offset voltage: ±2 μV (max, tested)
• Zero drift: ±0.003 μV/°C
• Low input bias current: 150 pA (max, 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 exceeds supply rails by ±100 mV
• Gain bandwidth: 5.7 MHz
• Quiescent current: 570 μA per amplifier
• Single supply: 1.7V to 5.5V
• Dual supply: ±0.85V to ±2.75V
• EMI and RFI filtered inputs