Analog Devices Inc. LTC6268 & LTC6269 Op Amps

Analog Devices Inc. LTC6268 and LTC6269 Op Amps are Single and Dual 500MHz FET-input Operational Amplifiers, with extremely low input bias current and low input capacitance. The LTC6268 and LTC6269 also feature low input-referred current noise, low, voltage noise, and low distortion. This makes them ideal for for high speed transimpedance amplifiers, CCD output buffers, high-impedance sensor amplifiers, and for driving SAR ADCs (Successive Approximation Register Analog-to-Digital Converters).

The LTC6268 and LTC6269 Op Amps operate on a 3.1V to 5.25V supply and consume 16.5mA per amplifier. A shutdown feature can be used to lower power consumption when the amplifier is not in use.

The LTC6268 Single Op Amp is available in 8-lead SOIC and 6-lead SOT-23 packages. The SOIC package includes two unconnected pins which can be used to create an input pin guard ring to protect against board leakage currents. The LTC6269 Dual Op Amp is available in 8-lead MSOP with exposed pad and 3mm × 3mm 10-lead DFN packages. Both Op Amps are fully specified over the -40°C to 85°C and the -40°C to 125°C temperature ranges.

Features

Gain Bandwidth Product: 500MHz
-3dB Bandwidth (A = 1): 350MHz
Low Input Bias Current
- ±3fA Typ. Room Temperature
- 4pA Max at 125°C
Current Noise (100kHz): 5.5fA/√Hz
Voltage Noise (1MHz): 4.3nV/√Hz
Extremely Low C_IN 450fF
Rail-to-Rail Output
Slew Rate: 400V/μs
Supply Range: 3.1V to 5.25V
Quiescent Current: 16.5mA
Input Current (SHDN): ±1mA
Output Current (I_OUT): 135mA

Harmonic Distortion (2V_P-P)
- -100dB at 1MHz
- -80dB at 10MHz
Operating Temperature Range
- LTC6268I/LTC6269I: -40°C to +85°C
- LTC6268H/LTC6269H: -40°C to +125°C
Package Options
- LTC6268 (Single)
  - 8-Lead SO-8
  - 6-Lead TSOT-23
- LTC6269 (Dual)
  - 8-Lead MS8
  - 10-Lead DFN
RoHS Compliant