Features and Benefits
- Low Supply Current: 10μA Maximum (per Amplifier)
- Offset Voltage: 5μV Maximum
- Offset Voltage Drift: 0.02μV/°C Maximum
- Input Bias Current:
- 5pA Typical
- 50pA Maximum, –40°C to 85°C
- 150pA Maximum, –40°C to 125°C
- Integrated EMI Filter (90dB Rejection at 1.8GHz)
- Shutdown Current: 170nA Maximum (per Amplifier)
- 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
- SC70, TSOT23, MS8, DFN10, TSSOP14 and QFN16 Packages
The LTC2066/LTC2067/LTC2068 are single, dual, and quad low power, zero-drift, 100kHz amplifiers. The LTC2066/LTC2067/LTC2068 enable high resolution measurement at extremely low power levels.
Typical supply current is 7.5μA per amplifier with a maximum of 10μA. The available shutdown mode has been optimized to minimize power consumption in duty-cycled applications and features low charge loss during powerup, reducing total system power.
The LTC2066/LTC2067/LTC2068’s self-calibrating circuitry results in very low input offset (5μV max) and offset drift (0.02μV/°C). The maximum input bias current is only 35pA and does not exceed 150pA over the full specified temperature range. The extremely low input bias current of the LTC2066/LTC2067/LTC2068 allows the use of high value power-saving resistors in the feedback network.
With its ultralow quiescent current and outstanding precision, the LTC2066/LTC2067/LTC2068 can serve as a signal chain building block in portable, energy harvesting and wireless sensor applications.
The LTC2066 is available in 6-lead SC70 and 5-lead TSOT-23 packages. The LTC2067 is available in 8-lead MSOP and 10-lead DFN packages. The LTC2068 is available in 14-lead TSSOP and 16-lead 3mm × 3mm QFN packages. These devices are fully specified over the –40°C to 85°C and –40°C to 125°C temperature ranges.
- Signal Conditioning in Wireless Mesh Networks
- Portable Instrumentation Systems
- Low-Power Sensor Conditioning
- Gas Detection
- Temperature Measurement
- Medical Instrumentation
- Energy Harvesting Applications
- Low Power Current Sensing
Markets and Technologies
Product Lifecycle Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (1)
Demonstration circuit 2837A is a customizable board showcasing the micropower zero-drift op amp LTC2063 (-A option) or LTC2066 (-B option) with shutdown in an SC70 6-pin package. The board is laid out for most common op amp applications and left mostly unstuffed to maximize flexibility for a wide range of applications.
The DC2837A includes the SC70 package op amp, jumpers, unity gain configuration resistors, input lowpass filters, reverse supply protection, and supply bypass capacitors on a small printed circuit board with turrets and SMA connectors for input, output, power and shutdown. The board may be used in split rail or single supply as desired.The user only needs to furnish external ±2.5V split supplies and an input signal to operate the board. An external shutdown signal can be applied as well to demonstrate the very minimal transient current when starting up the part from shutdown.
Documentation & Resources
R529 Reliability Data9/28/2018108 K
Tools & Simulations
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.