Summary of LTC6268-10 – 4GHz Ultra-Low Bias Current FET Input Op Amp
The LTC6268-10 is a single 4GHz FET input operational amplifier designed for high dynamic range and high-speed transimpedance amplifier applications. It features an ultralow bias current of 0.9pA to 4pA depending on the temperature range, making it ideal for photodiode, photomultiplier tube circuits, and high impedance sensor interfaces. The device offers wideband noise performance with a slew rate of 1000V/μs and is available in dual and unity gain stable variants.
Parts used in the LTC6268-10 Project:
- LTC6268-10 Single Op Amp
- LTC6269-10 Dual Op Amp
- LTC6268 Unity Gain Stable Op Amp
- LTC6269 Unity Gain Stable Dual Op Amp
The LTC6268-10 is a single 4GHz FET input op amp for high dynamic range and high speed transimpedance amplifier (TIA) applications. This new decompensated amplifiers extend the speed and dynamic range capabilities of this ultralow bias current op amp family for applications with a gain of 10 or higher. Input bias current is 0.9pA max over the 40°C to 85°C temperature range and just 4pA max over the entire 40°C to 125°C temperature range.
Wideband voltage and current noise are 4nV/√Hz and 7fA/√Hz, respectively. With 0.45pF input capacitance and 1000V/μs slew rate, the LTC6268-10 is well suited for photodiode and photomultiplier (PMT) circuits, high impedance sensor applications and for driving analog to digital converters (ADCs). The part is also available as a dual op amp (LTC6269-10) and in unity gain stable options (single LTC6268 and dual LTC6269).
For more detail: LTC6268-10 – 4GHz Ultra-Low Bias Current FET Input Op Amp
- What is the primary application of the LTC6268-10?
It is designed for high dynamic range and high speed transimpedance amplifier applications. - How low is the input bias current of this op amp?
The input bias current is 0.9pA max over the 40°C to 85°C range and 4pA max over the entire -40°C to 125°C range. - Does the LTC6268-10 have a high slew rate?
Yes, it has a slew rate of 1000V/μs. - Can this component be used with photodiodes?
Yes, it is well suited for photodiode and photomultiplier circuits. - Is there a dual version of this amplifier available?
Yes, the part is available as a dual op amp called the LTC6269-10. - What are the voltage and current noise levels?
Wideband voltage noise is 4nV/√Hz and current noise is 7fA/√Hz. - What is the input capacitance of the device?
The input capacitance is 0.45pF. - Are there unity gain stable options for this family?
Yes, unity gain stable options include the single LTC6268 and dual LTC6269.
