Datasheet LTC2063, LTC2064 (Analog Devices)

LTC2063/LTC2064 2µA Supply Current, Low IB, Zero-Drift Operational Amplifiers
FEATURES DESCRIPTION
n
Low Supply Current: 2μA Maximum (per Amplifier)
The LTC®2063/LTC2064 are single and dual low power, n
Offset Voltage: 5μV Maximum
zero-drift, 20kHz amplifiers. The LTC2063/LTC2064 n
Offset Voltage Drift: 0.02μV/°C Maximum
enable high resolution measurement at extremely low n
Input Bias Current:
power levels. n
3pA Typical
Typical supply current is 1.4µA per amplifier with a maxi- n
30pA Maximum, –40°C to 85°C
mum of 2µA. The available shutdown mode has been n
100pA Maximum, –40°C to 125°C
optimized to minimize power consumption in duty-cycled n
Integrated EMI Filter (114dB Rejection at 1.8GHz)
applications and features low charge loss during power- n
Shutdown Current: 170nA Maximum (per Amplifier)
up, reducing total system power. n Rail-to-Rail Input and Output n 1.7V to 5.25V Operating Supply Range The LTC2063/LTC2064’s self-calibrating circuitry results n A in very low input offset (5µV max) and offset drift VOL: 140dB Typical n Low-Charge Power-Up for Duty Cycled Applications (0.02µV/°C). The maximum input bias current is only n Specified Temperature Ranges: 20pA and does not exceed 100pA over the full specified n –40°C to 85°C temperature range. The extremely low input bias current n –40°C to 125°C of the LTC2063/LTC2064 allows the use of high value n SC70, TSOT-23, MS8 and DFN Packages power-saving resistors in the feedback network. With its ultralow quiescent current and outstanding
APPLICATIONS
precision, the LTC2063/LTC2064 can serve as a signal n Signal Conditioning in Wireless Mesh Networks chain building block in portable, energy harvesting and n Portable Instrumentation Systems wireless sensor applications. n Low-Power Sensor Conditioning The LTC2063 is available in 6-lead SC70 and 5-lead n Gas Detection TSOT-23 packages. The LTC2064 is available in 8-lead n Temperature Measurement MSOP and 10-lead DFN packages. These devices are fully n Medical Instrumentation specified over the –40°C to 85°C and –40°C to 125°C n Energy Harvesting Applications temperature ranges. n Low Power Current Sensing All registered trademarks and trademarks are the property of their respective owners.
TYPICAL APPLICATION Micropower Precision Oxygen Sensor Duty Cycle Lowers System Power
10M 0.1% 100k 1.8V 0.1% OXYGEN SENSOR – CHARGE CITY TECHNOLOGY 20nC/DIV 40XV 100k LTC2063 0.1% + V V OUT OUT = 1V IN AIR 1V/DIV 100Ω ISUPPLY = 1.4µA (ENABLED) 0.1% 90nA (SHUTDOWN) V V SHDN SHDN 2V/DIV 2063 TA01b www.citytech.com 40ms/DIV 2063 TA01 Rev A Document Feedback For more information www.analog.com 1 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Applications Information Typical Applications Package Description Revision History Typical Application Related Parts