Datasheet LTC2063, LTC2064, LTC2065 (Analog Devices)

LTC2063/LTC2064/LTC2065 2µA Supply Current, Low IB, Zero-Drift Operational Amplifiers
FEATURES DESCRIPTION
n
Low Supply Current: 2μA Maximum (per Amplifier)
The LTC®2063/LTC2064/LTC2065 are single, dual, n
Offset Voltage: 5μV Maximum
and quad low power, zero-drift, 20kHz amplifiers. The n
Offset Voltage Drift: 0.02μV/°C Maximum
LTC2063/LTC2064/LTC2065 enable high resolution mea- n
Input Bias Current:
surement at extremely low power levels. n
3pA Typical
Typical supply current is 1.4µA per amplifier with a max- n
30pA Maximum, –40°C to 85°C
imum 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 pow- n
Shutdown Current: 170nA Maximum (per Amplifier)
er-up, reducing total system power. n Rail-to-Rail Input and Output n 1.7V to 5.25V Operating Supply Range The LTC2063/LTC2064/LTC2065’s self-calibrating cir- n A cuitry results in very low input offset (5µV max) and offset VOL: 140dB Typical n Low-Charge Power-Up for Duty Cycled Applications drift (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/LTC2065 allows the use of high n SC70, TSOT23, MS8, DFN10, TSSOP14 and value power-saving resistors in the feedback network. QFN16 Packages With its ultralow quiescent current and outstanding pre- cision, the LTC2063/LTC2064/LTC2065 can serve as a
APPLICATIONS
signal chain building block in portable, energy harvest- n Signal Conditioning in Wireless Mesh Networks ing and wireless sensor applications. n Portable Instrumentation Systems The LTC2063 is available in 6-lead SC70 and 5-lead n Low-Power Sensor Conditioning TSOT-23 packages. The LTC2064 is available in 8-lead n Gas Detection MSOP and 10-lead DFN packages. The LTC2065 is avail- n Temperature Measurement able in 14-lead TSSOP and 16-lead 3mm × 3mm QFN n Medical Instrumentation packages. These devices are fully specified over the –40°C n Energy Harvesting Applications to 85°C and –40°C to 125°C 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. C 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