Texas Instruments OPA392
The OPAx392 family of operational amplifiers (OPA392, OPA2392, and OPA4392) features ultra-low offset, offset drift, and input bias current with rail-to-rail input and output operation. These features make the OPAx392 an excellent choice for driving high-precision analog-to-digital converters (ADCs) or buffering the output of high-resolution, digital-to-analog converters (DACs). The OPAx392 feature TI's e-trim™ operational amplifier technology to achieve ultra-low offset voltage and offset voltage drift without any input chopping or auto-zero techniques.FEATURES
● Low offset voltage: ±10µV (maximum)● Low-drift: ±0.18µV/°C
● Low input bias current: 10fA
● Low noise: 4.4nV/√Hz at 10kHz
● Low 1/f noise: 2µVPP (0.1Hz to 10Hz)
● Low supply voltage operation: 1.7V to 5.5V
● Low quiescent current: 1.22mA
● Fast settling: 0.75µs (1V to 0.1%)
● Fast slew rate: 4.5V/µs
● High output current: +65mA/–55mA short circuit
● Gain bandwidth: 13MHz
● Rail-to-rail input and output
● Specified temperature range: –40°C to +125°C
● EMI and RFI filtered inputs 2
APPLICATIONS
● Multiparameter patient monitor● Electrocardiogram (ECG)
● Chemistry and gas analyzer
● Optical module
● Analog input module
● Process analytics (pH, gas, concentration, force and humidity)
● Gas detector
● Analog security camera
● Merchant DC/DC
● Pulse oximeter
● Inter-DC interconnect (long-haul, submarine)
● Data acquisition (DAQ) 3.3 V + OPA392 ± 3.3 V ± OPA392 + Precision Current Shunt Monitor VIN ADC Precision Current Source DAC 3
DESCRIPTION
In addition to precision dc accuracy, the ac performance is optimized for low noise and fast-settling transient response.