OPA369/2369

The Industry's Lowest Power Zero-Crossover Operational Amplifier

Featuring a unique single-input-stage architecture, the OPA369 achieves rail-to-rail performance without input crossover. This architecture solves the common design problem of input offset distortion due to the change in common mode voltage that is very prominent in low-voltage, rail-to-rail applications. With features of 1µA quiescent current, SC70 package and operation down to 1.8V, the OPA369 simplifies high-performance designs in battery-powered, portable products. Generally, single supply designers must choose between power budget and AC or DC performance of their signal conditioning amplifiers. The OPA369/2369 combines TI's Zero-Crossover input topology and next generation CMOS process technology to offer precision performance not previously seen in a 1µA single supply amplifier. TI provides customers with a state-of-the-art signal chain solution for portable applications: analog-to-digital converters such as the ADS8326; digital-to-analog converters such as the DAC8560; and precision voltage references such as the REF33xx. The OPA369 is also optimized to work with TI's MSP430 ultra-low-power microcontroller family.

TI Series	Number of Circuits	Slew Rate	Gain Bandwidth Product	Current Supply	Current Output/Channel	Supply Voltage Single/Dual (±)
OPA3690	3-Triple	1800 V/µs	300MHz	16.5mA	190mA	5V ~ 12V ±2.5V ~ 6V
OPA3691	3-Triple	2100 V/µs	90MHz	15.3mA	190mA	5V ~ 12V ±2.5V ~ 6V
OPA2369	2-Dual	0.005 V/µs	12kHz	1µA	10mA	1.8V ~ 5.5V

Features   • Zero Crossover Input:       ° CMRR: 100dB (min)       ° Precision Vos: 750µV (max)   • Good Speed/Power       ° Bandwidth: 12kHz       ° Low Power: 1µA (max) Benefits   • Single supply signal conditioning; linear offset over entire input range maximizes dynamic performance of low power signal conditioning, AND reduces input errors.   • Filtering, data acquisition, and single supply signal processing applications – excellent bandwidth for the power consumption. Target End-Equipments   • Portable Medical Devices       ° Glucose Meters       ° Oxygen Metering       ° Current Sensing   • Portable Instrumentation   • Sensor Signal Conditioning   • Portable Consumer Devices   • Filtering   • Handheld Test Equipment Datasheet OPA369/OPA2369 Application Notes Abstract Shelf-Life Evaluation of Lead-Free Component Finishes