Industry’s Lowest Power Zero-Drift Op Amp Consumes only 1.3μA
14 July 2017The LTC2063 is a zero-drift op amp which draws just 1.3μA typ (2μA max) on a 1.8V supply. This micropower amplifier maintains uncompromised precision: maximum input offset voltage is 5μV at 25°C, maximum drift is 0.06μV/°C from –40°C to 125°C. Maximum input bias current is 15pA at 25°C, and 100pA from –40°C to 125°C.
These high precision input characteristics allow the use of large value feedback network resistors, keeping power consumption low without compromising accuracy, even at elevated temperature.
MILPITAS, CA & NORWOOD, MA – July 10, 2017 – Analog Devices, Inc., which recently acquired Linear Technology Corporation, announces the LTC2063 zero-drift op amp which draws just 1.3μA typ (2μA max) on a 1.8V supply. This micropower amplifier maintains uncompromised precision: maximum input offset voltage is 5μV at 25°C, maximum drift is 0.06μV/°C from –40°C to 125°C. Maximum input bias current is 15pA at 25°C, and 100pA from –40°C to 125°C. These high precision input characteristics allow the use of large value feedback network resistors, keeping power consumption low without compromising accuracy, even at elevated temperature.
Rail-to-rail inputs and outputs simplify single supply use and enhance dynamic range. An integrated EMI filter provides 114dB electromagnetic interference rejection at 1.8GHz. With low 1/f noise inherent to its zero-drift architecture the LTC2063 is well suited for amplifying and conditioning low frequency sensor signals in high temperature industrial and automotive systems as well as portable and wireless sensor network applications.
The LTC2063 is available in SOT-23 and SC70 packages. The SC70 version includes a shutdown mode which reduces current consumption to just 90nA when the amplifier is not in use. This enables ultralow power duty cycled sensor applications. For example, a precision low duty cycle oxygen sensor circuit shown in the data sheet consumes less than 200nA average current.
“The LTC2063 enables a whole new class of precision measurement solutions which can be placed anywhere,” stated Ross Yu, Dust Networks® marketing manager. “Its ultralow power and high precision are a perfect companion for Dust Networks’ SmartMesh® wireless sensor networks, expanding the reach of precision measurements to places previously not practical.”
An example is the DC2369A wireless current sense reference board which uses the LTC2063 and LTP™5901-IPM SmartMesh IP™ module and other micropower components to create an isolated floating current sense measurement platform which operates for years on small batteries.
The LTC2063 operates on supply voltages from 1.7V to 5.25V and is fully specified from –40C to 125C. Pricing starts at $1.50 each in 1,000-piece quantities. For more information, visit www.linear.com/product/LTC2063.
Photo Caption: Micropower Zero-Drift Op Amp Achieves 5µV Max VOS at 2µA Max IS
Summary of Features: LTC2063
- Low Supply Current: 2μA Maximum
- Offset Voltage: 5μV Maximum
- Offset Voltage Drift: 0.02μV/°C Maximum
- Input Bias Current: 3pA Typical, 30pA Maximum –40°C to 85°C, 100pA Maximum –40°C to 125°C
- Integrated EMI Filter (114dB Rejection at 1.8GHz)
- Shutdown Current: 90nA Typical, 170nA Maximum
- Rail-to-Rail Input and Output
- 1.7V to 5.25V Operating Supply Range
- AVOL: 140dB Typical
- Low Charge Power-Up for Duty Cycled Applications
- Specified Temperature Ranges:
- –40°C to 85°C
- –40°C to 125°C
- 6-Lead SC70, 5-Lead TSOT-23 Packages
Pricing shown is for budgetary use only and may differ due to local duties, taxes, fees and exchange rates.
Analog Devices just got more Powerful. On March 10, Analog Devices acquired Linear Technology, creating the premier high-performance analog company. More info at http://lt.linear.com/07c
About Analog Devices
Analog Devices (NASDAQ: ADI) is the leading global high-performance analog technology company dedicated to solving the toughest engineering challenges. We enable our customers to interpret the world around us by intelligently bridging the physical and digital with unmatched technologies that sense, measure, power, connect and interpret. Visit http://www.analog.com
, LT, LTC, LTM, Linear Technology, Dust Networks, SmartMesh and the Linear logo are registered trademarks and LTP and SmartMesh IP are trademarks of Analog Devices, Inc. All other trademarks are the property of their respective owners.
Press Contacts:
North America / Worldwide UK & Nordic
John Hamburger, Director Marketing Alan Timmins
Communications a.timmins@ntlworld.com
jhamburger@linear.com Tel: +44-1-252-629937
Tel: 408-432-1900 ext 2419
Doug Dickinson, Media Relations Manager
ddickinson@linear.com
Tel: 408-432-1900 ext 2233
Background
With the increased adoption of “Smart Factory” and Wireless Sensor Network technologies, sensors are expected to go anywhere and everywhere, operating over wide temperature ranges and consuming very little power. The circuitry surrounding the sensor in such systems needs to be very precise, especially at DC and low frequencies. Zero-drift amplifiers have long been favored as sensor buffers and amplifiers for their low input offset voltage, low offset drift over temperature, and low 1/f voltage noise. In some cases the current consumption of these devices limits system battery life.
Industry’s Lowest Power Zero-Drift Op Amp
The new LTC2063 achieves outstanding zero-drift performance with 5μV max input offset voltage, 0.06μV/°C max drift from -40°C to 125°C, and 4.8μVp-p DC to 10Hz integrated voltage noise. Yet the LTC2063 consumes just 1.3μA current, which is better than 5x lower than the next nearest competitive part.
In addition to being the industry’s lowest power zero-drift op amp at 1.3μA on a 1.8V supply, the LTC2063 has a maximum input bias current of 20pA at 25°C, and 100pA max over the full temperature range. This allows the LTC2063 to directly interface with high impedance sensors, and also enables the use of higher value feedback resistors in the feedback network saving additional system power. While some amplifiers exhibit a large startup current that far exceeds average power consumption, the LTC2063 maintains low current draw even during startup. It is available in tiny SOT-23 and SC70 packages. The 6-lead SC70 version includes a 90nA shutdown capability allowing for further power savings in duty-cycled applications. As an example, the LTC2063 data sheet shows a duty cycled oxygen sensor application which consumes less than 400nW.
With its ultralow quiescent current and outstanding precision, the LTC2063 is well suited for amplifying and conditioning low frequency sensor signals in high temperature industrial and automotive systems as well as medical, portable, energy harvesting and wireless sensor network applications.
Features:
- Low Supply Current: 2μA Maximum
- Offset Voltage: 5μV Maximum
- Offset Voltage Drift: 0.02μV/°C Maximum
- Input Bias Current
- 3pA Typical
- 30pA Maximum, –40°C to 85°C
- 100pA Maximum, –40°C to 125°C
- Integrated EMI Filter (114dB Rejection at 1.8GHz)
- Shutdown Current: 170nA Maximum
- Rail-to-Rail Input and Output
- 1.7V to 5.25V Operating Supply Range
- AVOL: 140dB Typical
- Low-Charge Power-Up for Duty Cycled Applications
- Specified Temperature Ranges:
- –40°C to 85°C
- –40°C to 125°C
- 6-Lead SC70, 5-Lead TSOT-23 Packages
Background
With the increased adoption of “Smart Factory” and Wireless Sensor Network technologies, sensors are expected to go anywhere and everywhere, operating over wide temperature ranges and consuming very little power. The circuitry surrounding the sensor in such systems needs to be very precise, especially at DC and low frequencies. Zero-drift amplifiers have long been favored as sensor buffers and amplifiers for their low input offset voltage, low offset drift over temperature, and low 1/f voltage noise. In some cases the current consumption of these devices limits system battery life.
Industry’s Lowest Power Zero-Drift Op Amp
The new LTC2063 achieves outstanding zero-drift performance with 5μV max input offset voltage, 0.06μV/°C max drift from -40°C to 125°C, and 4.8μVp-p DC to 10Hz integrated voltage noise. Yet the LTC2063 consumes just 1.3μA current, which is better than 5x lower than the next nearest competitive part.
In addition to being the industry’s lowest power zero-drift op amp at 1.3μA on a 1.8V supply, the LTC2063 has a maximum input bias current of 20pA at 25°C, and 100pA max over the full temperature range. This allows the LTC2063 to directly interface with high impedance sensors, and also enables the use of higher value feedback resistors in the feedback network saving additional system power. While some amplifiers exhibit a large startup current that far exceeds average power consumption, the LTC2063 maintains low current draw even during startup. It is available in tiny SOT-23 and SC70 packages. The 6-lead SC70 version includes a 90nA shutdown capability allowing for further power savings in duty-cycled applications. As an example, the LTC2063 data sheet shows a duty cycled oxygen sensor application which consumes less than 400nW.
With its ultralow quiescent current and outstanding precision, the LTC2063 is well suited for amplifying and conditioning low frequency sensor signals in high temperature industrial and automotive systems as well as medical, portable, energy harvesting and wireless sensor network applications.
Features:
- Low Supply Current: 2μA Maximum
- Offset Voltage: 5μV Maximum
- Offset Voltage Drift: 0.02μV/°C Maximum
- Input Bias Current
- 3pA Typical
- 30pA Maximum, –40°C to 85°C
- 100pA Maximum, –40°C to 125°C
- Integrated EMI Filter (114dB Rejection at 1.8GHz)
- Shutdown Current: 170nA Maximum
- Rail-to-Rail Input and Output
- 1.7V to 5.25V Operating Supply Range
- AVOL: 140dB Typical
- Low-Charge Power-Up for Duty Cycled Applications
- Specified Temperature Ranges:
- –40°C to 85°C
- –40°C to 125°C
- 6-Lead SC70, 5-Lead TSOT-23 Packages