OPA378AIDCKR

The OPA378 and OPA2378 represent a new family of zero-drift, microPOWER op amps that employ a proprietary auto-calibration technique designed to provide minimum input offset voltage (20μV) and offset voltage drift (0.1μV/°C). The combination of low input voltage noise, high gain bandwidth (900kHz), and low power consumption (150μA maximum) enables these devices to achieve optimum performance in low-power, high-precision applications. In addition, excellent PSRR performance combined with a wide supply voltage range of 2.2V to 5.5V and rail-to-rail input and output makes them an ideal choice for single-supply applications operating directly from a battery (without regulation). The OPA378 (single-channel device) is available in microSIZE SC70-5 and SOT23-5 packages. The OPA2378 (dual-channel device) is available in an SOT23-8 package. All device versions are specified for an operating temperature range of -40°C to +125°C.

Applications

• Portable medical devices
• Blood glucose meters
• Pulse oximetry
• Heart rate monitors
• Weighing scales
• Battery-powered instruments
• Thermopile modules
• Handheld test equipment
• Sensor signal conditioning

Key features

• Low noise
• 0.4μVpp, 0.1Hz to 10Hz
• 20nV/√Hz (at 1kHz) - Zero-drift series
• Low offset voltage: 20μV
• Low offset drift: 0.1μV/℃
• Quiescent current: 125μA
• Gain bandwidth: 900kHz
• Rail-to-rail input/output
• EMI filtering
• Supply voltage: 2.2V to 5.5V
• microSIZE packages: SC70 and SOT23