OPA378 - Low-Noise, 900kHz, RRIO, Precision Operational Amplifier, Zerø-Drift Series

Updated : 2020-01-09 14:18:36
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 package. The OPA2378 (dual version) is offered in a SOT23-8 package. All versions are specified for operation from –40°C to +125°C.

Products containing the "OPA378" keyword are: OPA378AIDBVR , OPA378AIDBVR , OPA378AIDBVT , OPA378AIDBVT , OPA378AIDCKR , OPA378AIDCKR , OPA378AIDCKR-PCN , OPA378AIDCKRG4 , OPA378AIDCKT , OPA378AIDCKT
Features

  • 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

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Parametrics
StatusACTIVE
Number of channels1
Total Supply Voltage2.2
Vos (offset voltage @ 25 C)0.05
GBW0.9
Slew Rate0.4
Rail-to-railIn^Out
Offset drift0.1
Iq per channel0.125
Vn at 1 kHz20
CMRR112
RatingCatalog
Operating temperature range-40 to 125
Package GroupSC70|5
Approx. price0.70 | 1ku
Package size: mm2:W x L (PKG)[pf]5SC70[/pf]: 4 mm2: 2.1 x 2 (SC70|5)
Input bias current550
Output current30
FeaturesEMI Hardened^Small Size^Zero Drift
ArchitectureCMOS
Input common mode headroom (to negative supply)-0.05
Input common mode headroom (to positive supply)0.05
Output swing headroom (to negative supply)0.006
Output swing headroom (to positive supply)-0.006