OPA378 Low-Noise, 900kHz, RRIO, Precision Operational Amplifier, Zerø-Drift Series | TI.com

OPA378 (ACTIVE)

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

 

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.

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 Compare all products in Precision op amps (Vos<1mV)

 
Number of channels (#)
Total Supply Voltage (Min) (+5V=5, +/-5V=10)
Total Supply Voltage (Max) (+5V=5, +/-5V=10)
GBW (Typ) (MHz)
Slew Rate (Typ) (V/us)
Rail-to-rail
Vos (offset voltage @ 25 C) (Max) (mV)
Offset drift (Typ) (uV/C)
Iq per channel (Typ) (mA)
Vn at 1 kHz (Typ) (nV/rtHz)
CMRR (Typ) (dB)
Rating
Operating temperature range (C)
Package Group
Package size: mm2:W x L (PKG)
Input bias current (Max) (pA)
Output current (Typ) (mA)
Features
Architecture
OPA378 OPA2378
1     2    
2.2     2.2    
5.5     5.5    
0.9     0.9    
0.4     0.4    
In
Out    
In
Out    
0.05     0.07    
0.1     0.1    
0.125     0.125    
20     20    
112     112    
Catalog     Catalog    
-40 to 125     -40 to 125    
SC70 | 5
SOT-23 | 5    
SOT-23 | 8    
5SC70: 4 mm2: 2.1 x 2 (SC70 | 5)
5SOT-23: 8 mm2: 2.8 x 2.9 (SOT-23 | 5)    
8SOT-23: 8 mm2: 2.8 x 2.9 (SOT-23 | 8)    
550     550    
30     30    
EMI Hardened
Small Size
Zero Drift    
EMI Hardened
Zero Drift    
CMOS     CMOS    

Design tool

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Filter Type
 Lowpass
 Highpass
 Bandpass
 Bandstop
 
Cutoff Frequency  Hz
Gain  dB
Filter Response
Filter Order