Datasheet LTC2066, LTC2067 (Analog Devices)

LTC2066/LTC2067 10µA Supply Current, Low IB, Zero-Drift Operational Amplifier
FEATURES DESCRIPTION
n
Low Supply Current: 10μA Maximum (per Amplifier)
The LTC®2066/LTC2067 are single and dual low power, n
Offset Voltage: 5μV Maximum
zero-drift, 100kHz amplifiers. The LTC2066/LTC2067 n
Offset Voltage Drift: 0.02μV/°C Maximum
enable high resolution measurement at extremely low n
Input Bias Current:
power levels. n
5pA Typical
Typical supply current is 7.5µA per amplifier with a maxi- n
50pA Maximum, –40°C to 85°C
mum of 10µA. The available shutdown mode has been n
150pA Maximum, –40°C to 125°C
optimized to minimize power consumption in duty-cycled n
Integrated EMI Filter (90dB 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 LTC2066/LTC2067’s self-calibrating circuitry re- n A sults 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: 35pA and does not exceed 150pA 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 LTC2066/LTC2067 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 LTC2066/LTC2067 can serve as a signal n chain building block in portable, energy harvesting and Signal Conditioning in Wireless Mesh Networks n wireless sensor applications. Portable Instrumentation Systems n Low-Power Sensor Conditioning The LTC2066 is available in 6-lead SC70 and 5-lead TSOT- n Gas Detection 23 packages. The LTC2067 is available in 8-lead MSOP n Temperature Measurement and 10-lead DFN packages. These devices are fully speci- n Medical Instrumentation fied over the –40°C to 85°C and –40°C to 125°C tempera- n Energy Harvesting Applications ture ranges. n Low Power Current Sensing All registered trademarks and trademarks are the property of their respective owners.
TYPICAL APPLICATION Output Voltage vs Sense Current Precision Micropower Low Side Current Sense
2.5 1 10k 1M 0.1% 0.1% (V) VIN 3.3V OUT – 0.1 LOAD TAGE, V 10k* LTC2066 V 0.1% OUT = 10 • ISENSE + 1mV TO 2.5V 0.01 ISENSE 100mΩ 2066 TA01a OUTPUT VOL 100µA TO 250mA 0.1% *RESISTOR CANCELS OUT PARASITIC SEEBECK EFFECT VOLTAGE 0.0010.1 1 10 100 250 ISENSE (mA) 2066 TA01b Rev A Document Feedback For more information www.analog.com 1 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Typical Application Related Parts