OPA378

OPA378 OPA2378 www.ti.com SBOS417D – JANUARY 2008 – REVISED OCTOBER 2009 Low-Noise, 900kHz, RRIO, Precision OPERATIONAL AMPLIFIER Zerø-Drift Series Check for Samples: OPA378 OPA2378 FEATURES 1 23 LOW NOISE – 0.4μVPP, 0.1Hz to 10Hz – 20nV/√Hz at 1kHz ZERØ-DRIFT SERIES – LOW OFFSET VOLTAGE: 20μV – LOW OFFSET DRIFT: 0.1μV/°C 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 APPLICATIONS PORTABLE MEDICAL DEVICES – GLUCOSE METERS – OXYGEN METERING – HEART RATE MONITORS WEIGH SCALES BATTERY-POWERED INSTRUMENTS THERMOPILE MODULES HANDHELD TEST EQUIPMENT SENSOR SIGNAL CONDITIONING 0.1Hz TO 10Hz NOISE DESCRIPTION The OPA378 and OPA2378 represent a new generation of Zerø-Drift, microPOWER™ operational amplifiers that use a proprietary auto-calibration technique to provide minimal 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 (150μA max) enable these devices to achieve optimum performance for low-power precision applications. In addition, the excellent PSRR performance, coupled with a wide input supply range of 2.2V to 5.5V and rail-to-rail input and output, makes it an outstanding choice for single-supply applications that run directly from batteries without regulation. The OPA378 (single version) is available in both a microSIZE SC70-5 and a SOT23-5...