LTC6244 is a high performance, low noise, rail-to-rail, CMOS op amp from LTC company. It features a 50MHz gain bandwidth, 40V/µs slew rate, 1pA of input bias current, low input capacitance and rail-to-rail output swing. 0.1Hz to 10Hz noise is just 1.5µVP-P and 1kHz noise is guaranteed to be less than 12nV/√Hz. This excellent AC and noise performance is combined with wide supply range operation, a maximum offset voltage of just 100µV and drift of only 2.5µV/°C, making it suitable for use in many fast signal processing applications, such as photodiode amplifiers. This op amp has an output stage that swings within 35mV of either supply rail to maximize the signal dynamic range in low supply applications. The input common mode range extends to the negative supply. It is fully specified on 3V and 5V, and an HV version guarantees operation on supplies of ±5V. The LTC6244 is available in the 8-pin MSOP, and for compact designs, it is packaged in the tiny dual fine pitch lead free (DFN) package.
The LTC6244 is a dual, unity‑gain stable CMOS operational amplifier offering a 50 MHz gain‑bandwidth product, 40 V/µs slew rate, ultra‑low 1 pA input bias current, and rail‑to‑rail output swing. It features low offset voltage (100 nV max) and low offset drift (2.5 µV/°C) with very low noise (1.5 µV‑p‑p from 0.1 Hz to 10 Hz).
Typical applications include photodiode amplifiers, charge‑coupled device (CCD) amplifiers, low‑noise signal processing, active filters, medical instrumentation, and high‑impedance transducer amplifiers. The device is offered in 8‑lead MSOP and tiny DFN packages, with standard and high‑voltage (HV) versions covering supply ranges from 2.8 V to 6 V (or up to 5.25 V for the HV variant).
| Input Bias Current | 1 pA (typical) |
|---|---|
| Low Offset Voltage | 100 nV max |
| Gain Bandwidth Product | 50 MHz |
| Slew Rate | 40 V/µs |
| Supply Voltage Range | 2.8 V to 6 V (standard), 2.8 V to 5.25 V (HV) |
| Output Swing | Rail‑to‑rail, within 35 mV of each rail |
| Input Capacitance | 2.1 pF |
The LTC6244 has an input bias current of 1 pA typical at 25 °C.
The standard LTC6244 operates from 2.8 V to 6 V, while the HV version operates from 2.8 V to 5.25 V.
The device provides a gain‑bandwidth product of 50 MHz.